1318 lines
37 KiB
C
1318 lines
37 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2015 MediaTek Inc.
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* Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
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*
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*/
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#include <dt-bindings/phy/phy.h>
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/iopoll.h>
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#include <linux/mfd/syscon.h>
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#include <linux/module.h>
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#include <linux/nvmem-consumer.h>
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#include <linux/of_address.h>
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#include <linux/of_device.h>
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#include <linux/phy/phy.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include "phy-mtk-io.h"
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/* version V1 sub-banks offset base address */
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/* banks shared by multiple phys */
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#define SSUSB_SIFSLV_V1_SPLLC 0x000 /* shared by u3 phys */
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#define SSUSB_SIFSLV_V1_U2FREQ 0x100 /* shared by u2 phys */
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#define SSUSB_SIFSLV_V1_CHIP 0x300 /* shared by u3 phys */
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/* u2 phy bank */
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#define SSUSB_SIFSLV_V1_U2PHY_COM 0x000
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/* u3/pcie/sata phy banks */
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#define SSUSB_SIFSLV_V1_U3PHYD 0x000
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#define SSUSB_SIFSLV_V1_U3PHYA 0x200
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/* version V2/V3 sub-banks offset base address */
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/* V3: U2FREQ is not used anymore, but reserved */
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/* u2 phy banks */
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#define SSUSB_SIFSLV_V2_MISC 0x000
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#define SSUSB_SIFSLV_V2_U2FREQ 0x100
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#define SSUSB_SIFSLV_V2_U2PHY_COM 0x300
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/* u3/pcie/sata phy banks */
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#define SSUSB_SIFSLV_V2_SPLLC 0x000
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#define SSUSB_SIFSLV_V2_CHIP 0x100
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#define SSUSB_SIFSLV_V2_U3PHYD 0x200
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#define SSUSB_SIFSLV_V2_U3PHYA 0x400
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#define U3P_MISC_REG1 0x04
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#define MR1_EFUSE_AUTO_LOAD_DIS BIT(6)
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#define U3P_USBPHYACR0 0x000
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#define PA0_RG_U2PLL_FORCE_ON BIT(15)
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#define PA0_USB20_PLL_PREDIV GENMASK(7, 6)
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#define PA0_RG_USB20_INTR_EN BIT(5)
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#define U3P_USBPHYACR1 0x004
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#define PA1_RG_INTR_CAL GENMASK(23, 19)
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#define PA1_RG_VRT_SEL GENMASK(14, 12)
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#define PA1_RG_TERM_SEL GENMASK(10, 8)
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#define U3P_USBPHYACR2 0x008
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#define PA2_RG_U2PLL_BW GENMASK(21, 19)
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#define PA2_RG_SIF_U2PLL_FORCE_EN BIT(18)
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#define U3P_USBPHYACR5 0x014
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#define PA5_RG_U2_HSTX_SRCAL_EN BIT(15)
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#define PA5_RG_U2_HSTX_SRCTRL GENMASK(14, 12)
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#define PA5_RG_U2_HS_100U_U3_EN BIT(11)
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#define U3P_USBPHYACR6 0x018
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#define PA6_RG_U2_PRE_EMP GENMASK(31, 30)
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#define PA6_RG_U2_BC11_SW_EN BIT(23)
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#define PA6_RG_U2_OTG_VBUSCMP_EN BIT(20)
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#define PA6_RG_U2_DISCTH GENMASK(7, 4)
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#define PA6_RG_U2_SQTH GENMASK(3, 0)
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#define U3P_U2PHYACR4 0x020
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#define P2C_RG_USB20_GPIO_CTL BIT(9)
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#define P2C_USB20_GPIO_MODE BIT(8)
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#define P2C_U2_GPIO_CTR_MSK (P2C_RG_USB20_GPIO_CTL | P2C_USB20_GPIO_MODE)
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#define U3P_U2PHYA_RESV 0x030
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#define P2R_RG_U2PLL_FBDIV_26M 0x1bb13b
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#define P2R_RG_U2PLL_FBDIV_48M 0x3c0000
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#define U3P_U2PHYA_RESV1 0x044
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#define P2R_RG_U2PLL_REFCLK_SEL BIT(5)
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#define P2R_RG_U2PLL_FRA_EN BIT(3)
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#define U3D_U2PHYDCR0 0x060
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#define P2C_RG_SIF_U2PLL_FORCE_ON BIT(24)
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#define U3P_U2PHYDTM0 0x068
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#define P2C_FORCE_UART_EN BIT(26)
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#define P2C_FORCE_DATAIN BIT(23)
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#define P2C_FORCE_DM_PULLDOWN BIT(21)
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#define P2C_FORCE_DP_PULLDOWN BIT(20)
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#define P2C_FORCE_XCVRSEL BIT(19)
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#define P2C_FORCE_SUSPENDM BIT(18)
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#define P2C_FORCE_TERMSEL BIT(17)
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#define P2C_RG_DATAIN GENMASK(13, 10)
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#define P2C_RG_DMPULLDOWN BIT(7)
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#define P2C_RG_DPPULLDOWN BIT(6)
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#define P2C_RG_XCVRSEL GENMASK(5, 4)
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#define P2C_RG_SUSPENDM BIT(3)
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#define P2C_RG_TERMSEL BIT(2)
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#define P2C_DTM0_PART_MASK \
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(P2C_FORCE_DATAIN | P2C_FORCE_DM_PULLDOWN | \
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P2C_FORCE_DP_PULLDOWN | P2C_FORCE_XCVRSEL | \
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P2C_FORCE_TERMSEL | P2C_RG_DMPULLDOWN | \
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P2C_RG_DPPULLDOWN | P2C_RG_TERMSEL)
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#define U3P_U2PHYDTM1 0x06C
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#define P2C_RG_UART_EN BIT(16)
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#define P2C_FORCE_IDDIG BIT(9)
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#define P2C_RG_VBUSVALID BIT(5)
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#define P2C_RG_SESSEND BIT(4)
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#define P2C_RG_AVALID BIT(2)
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#define P2C_RG_IDDIG BIT(1)
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#define U3P_U2PHYBC12C 0x080
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#define P2C_RG_CHGDT_EN BIT(0)
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#define U3P_U3_CHIP_GPIO_CTLD 0x0c
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#define P3C_REG_IP_SW_RST BIT(31)
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#define P3C_MCU_BUS_CK_GATE_EN BIT(30)
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#define P3C_FORCE_IP_SW_RST BIT(29)
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#define U3P_U3_CHIP_GPIO_CTLE 0x10
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#define P3C_RG_SWRST_U3_PHYD BIT(25)
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#define P3C_RG_SWRST_U3_PHYD_FORCE_EN BIT(24)
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#define U3P_U3_PHYA_REG0 0x000
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#define P3A_RG_IEXT_INTR GENMASK(15, 10)
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#define P3A_RG_CLKDRV_OFF GENMASK(3, 2)
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#define U3P_U3_PHYA_REG1 0x004
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#define P3A_RG_CLKDRV_AMP GENMASK(31, 29)
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#define U3P_U3_PHYA_REG6 0x018
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#define P3A_RG_TX_EIDLE_CM GENMASK(31, 28)
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#define U3P_U3_PHYA_REG9 0x024
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#define P3A_RG_RX_DAC_MUX GENMASK(5, 1)
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#define U3P_U3_PHYA_DA_REG0 0x100
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#define P3A_RG_XTAL_EXT_PE2H GENMASK(17, 16)
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#define P3A_RG_XTAL_EXT_PE1H GENMASK(13, 12)
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#define P3A_RG_XTAL_EXT_EN_U3 GENMASK(11, 10)
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#define U3P_U3_PHYA_DA_REG4 0x108
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#define P3A_RG_PLL_DIVEN_PE2H GENMASK(21, 19)
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#define P3A_RG_PLL_BC_PE2H GENMASK(7, 6)
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#define U3P_U3_PHYA_DA_REG5 0x10c
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#define P3A_RG_PLL_BR_PE2H GENMASK(29, 28)
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#define P3A_RG_PLL_IC_PE2H GENMASK(15, 12)
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#define U3P_U3_PHYA_DA_REG6 0x110
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#define P3A_RG_PLL_IR_PE2H GENMASK(19, 16)
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#define U3P_U3_PHYA_DA_REG7 0x114
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#define P3A_RG_PLL_BP_PE2H GENMASK(19, 16)
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#define U3P_U3_PHYA_DA_REG20 0x13c
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#define P3A_RG_PLL_DELTA1_PE2H GENMASK(31, 16)
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#define U3P_U3_PHYA_DA_REG25 0x148
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#define P3A_RG_PLL_DELTA_PE2H GENMASK(15, 0)
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#define U3P_U3_PHYD_LFPS1 0x00c
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#define P3D_RG_FWAKE_TH GENMASK(21, 16)
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#define U3P_U3_PHYD_IMPCAL0 0x010
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#define P3D_RG_FORCE_TX_IMPEL BIT(31)
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#define P3D_RG_TX_IMPEL GENMASK(28, 24)
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#define U3P_U3_PHYD_IMPCAL1 0x014
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#define P3D_RG_FORCE_RX_IMPEL BIT(31)
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#define P3D_RG_RX_IMPEL GENMASK(28, 24)
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#define U3P_U3_PHYD_RSV 0x054
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#define P3D_RG_EFUSE_AUTO_LOAD_DIS BIT(12)
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#define U3P_U3_PHYD_CDR1 0x05c
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#define P3D_RG_CDR_BIR_LTD1 GENMASK(28, 24)
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#define P3D_RG_CDR_BIR_LTD0 GENMASK(12, 8)
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#define U3P_U3_PHYD_RXDET1 0x128
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#define P3D_RG_RXDET_STB2_SET GENMASK(17, 9)
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#define U3P_U3_PHYD_RXDET2 0x12c
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#define P3D_RG_RXDET_STB2_SET_P3 GENMASK(8, 0)
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#define U3P_SPLLC_XTALCTL3 0x018
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#define XC3_RG_U3_XTAL_RX_PWD BIT(9)
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#define XC3_RG_U3_FRC_XTAL_RX_PWD BIT(8)
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#define U3P_U2FREQ_FMCR0 0x00
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#define P2F_RG_MONCLK_SEL GENMASK(27, 26)
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#define P2F_RG_FREQDET_EN BIT(24)
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#define P2F_RG_CYCLECNT GENMASK(23, 0)
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#define U3P_U2FREQ_VALUE 0x0c
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#define U3P_U2FREQ_FMMONR1 0x10
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#define P2F_USB_FM_VALID BIT(0)
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#define P2F_RG_FRCK_EN BIT(8)
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#define U3P_REF_CLK 26 /* MHZ */
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#define U3P_SLEW_RATE_COEF 28
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#define U3P_SR_COEF_DIVISOR 1000
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#define U3P_FM_DET_CYCLE_CNT 1024
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/* SATA register setting */
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#define PHYD_CTRL_SIGNAL_MODE4 0x1c
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/* CDR Charge Pump P-path current adjustment */
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#define RG_CDR_BICLTD1_GEN1_MSK GENMASK(23, 20)
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#define RG_CDR_BICLTD0_GEN1_MSK GENMASK(11, 8)
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#define PHYD_DESIGN_OPTION2 0x24
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/* Symbol lock count selection */
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#define RG_LOCK_CNT_SEL_MSK GENMASK(5, 4)
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#define PHYD_DESIGN_OPTION9 0x40
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/* COMWAK GAP width window */
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#define RG_TG_MAX_MSK GENMASK(20, 16)
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/* COMINIT GAP width window */
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#define RG_T2_MAX_MSK GENMASK(13, 8)
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/* COMWAK GAP width window */
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#define RG_TG_MIN_MSK GENMASK(7, 5)
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/* COMINIT GAP width window */
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#define RG_T2_MIN_MSK GENMASK(4, 0)
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#define ANA_RG_CTRL_SIGNAL1 0x4c
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/* TX driver tail current control for 0dB de-empahsis mdoe for Gen1 speed */
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#define RG_IDRV_0DB_GEN1_MSK GENMASK(13, 8)
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#define ANA_RG_CTRL_SIGNAL4 0x58
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#define RG_CDR_BICLTR_GEN1_MSK GENMASK(23, 20)
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/* Loop filter R1 resistance adjustment for Gen1 speed */
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#define RG_CDR_BR_GEN2_MSK GENMASK(10, 8)
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#define ANA_RG_CTRL_SIGNAL6 0x60
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/* I-path capacitance adjustment for Gen1 */
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#define RG_CDR_BC_GEN1_MSK GENMASK(28, 24)
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#define RG_CDR_BIRLTR_GEN1_MSK GENMASK(4, 0)
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#define ANA_EQ_EYE_CTRL_SIGNAL1 0x6c
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/* RX Gen1 LEQ tuning step */
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#define RG_EQ_DLEQ_LFI_GEN1_MSK GENMASK(11, 8)
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#define ANA_EQ_EYE_CTRL_SIGNAL4 0xd8
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#define RG_CDR_BIRLTD0_GEN1_MSK GENMASK(20, 16)
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#define ANA_EQ_EYE_CTRL_SIGNAL5 0xdc
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#define RG_CDR_BIRLTD0_GEN3_MSK GENMASK(4, 0)
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/* PHY switch between pcie/usb3/sgmii/sata */
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#define USB_PHY_SWITCH_CTRL 0x0
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#define RG_PHY_SW_TYPE GENMASK(3, 0)
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#define RG_PHY_SW_PCIE 0x0
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#define RG_PHY_SW_USB3 0x1
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#define RG_PHY_SW_SGMII 0x2
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#define RG_PHY_SW_SATA 0x3
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#define TPHY_CLKS_CNT 2
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enum mtk_phy_version {
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MTK_PHY_V1 = 1,
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MTK_PHY_V2,
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MTK_PHY_V3,
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};
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struct mtk_phy_pdata {
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/* avoid RX sensitivity level degradation only for mt8173 */
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bool avoid_rx_sen_degradation;
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/*
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* workaround only for mt8195, HW fix it for others of V3,
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* u2phy should use integer mode instead of fractional mode of
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* 48M PLL, fix it by switching PLL to 26M from default 48M
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*/
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bool sw_pll_48m_to_26m;
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/*
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* Some SoCs (e.g. mt8195) drop a bit when use auto load efuse,
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* support sw way, also support it for v2/v3 optionally.
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*/
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bool sw_efuse_supported;
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enum mtk_phy_version version;
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};
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struct u2phy_banks {
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void __iomem *misc;
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void __iomem *fmreg;
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void __iomem *com;
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};
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struct u3phy_banks {
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void __iomem *spllc;
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void __iomem *chip;
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void __iomem *phyd; /* include u3phyd_bank2 */
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void __iomem *phya; /* include u3phya_da */
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};
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struct mtk_phy_instance {
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struct phy *phy;
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void __iomem *port_base;
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union {
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struct u2phy_banks u2_banks;
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struct u3phy_banks u3_banks;
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};
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struct clk_bulk_data clks[TPHY_CLKS_CNT];
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u32 index;
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u32 type;
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struct regmap *type_sw;
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u32 type_sw_reg;
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u32 type_sw_index;
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u32 efuse_sw_en;
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u32 efuse_intr;
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u32 efuse_tx_imp;
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u32 efuse_rx_imp;
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int eye_src;
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int eye_vrt;
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int eye_term;
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int intr;
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int discth;
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int pre_emphasis;
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bool bc12_en;
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};
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struct mtk_tphy {
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struct device *dev;
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void __iomem *sif_base; /* only shared sif */
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const struct mtk_phy_pdata *pdata;
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struct mtk_phy_instance **phys;
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int nphys;
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int src_ref_clk; /* MHZ, reference clock for slew rate calibrate */
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int src_coef; /* coefficient for slew rate calibrate */
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};
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static void hs_slew_rate_calibrate(struct mtk_tphy *tphy,
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struct mtk_phy_instance *instance)
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{
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struct u2phy_banks *u2_banks = &instance->u2_banks;
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void __iomem *fmreg = u2_banks->fmreg;
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void __iomem *com = u2_banks->com;
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int calibration_val;
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int fm_out;
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u32 tmp;
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/* HW V3 doesn't support slew rate cal anymore */
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if (tphy->pdata->version == MTK_PHY_V3)
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return;
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/* use force value */
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if (instance->eye_src)
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return;
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/* enable USB ring oscillator */
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mtk_phy_set_bits(com + U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCAL_EN);
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udelay(1);
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/*enable free run clock */
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mtk_phy_set_bits(fmreg + U3P_U2FREQ_FMMONR1, P2F_RG_FRCK_EN);
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/* set cycle count as 1024, and select u2 channel */
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tmp = readl(fmreg + U3P_U2FREQ_FMCR0);
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tmp &= ~(P2F_RG_CYCLECNT | P2F_RG_MONCLK_SEL);
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tmp |= FIELD_PREP(P2F_RG_CYCLECNT, U3P_FM_DET_CYCLE_CNT);
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if (tphy->pdata->version == MTK_PHY_V1)
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tmp |= FIELD_PREP(P2F_RG_MONCLK_SEL, instance->index >> 1);
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writel(tmp, fmreg + U3P_U2FREQ_FMCR0);
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/* enable frequency meter */
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mtk_phy_set_bits(fmreg + U3P_U2FREQ_FMCR0, P2F_RG_FREQDET_EN);
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/* ignore return value */
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readl_poll_timeout(fmreg + U3P_U2FREQ_FMMONR1, tmp,
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(tmp & P2F_USB_FM_VALID), 10, 200);
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fm_out = readl(fmreg + U3P_U2FREQ_VALUE);
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/* disable frequency meter */
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mtk_phy_clear_bits(fmreg + U3P_U2FREQ_FMCR0, P2F_RG_FREQDET_EN);
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/*disable free run clock */
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mtk_phy_clear_bits(fmreg + U3P_U2FREQ_FMMONR1, P2F_RG_FRCK_EN);
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if (fm_out) {
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/* ( 1024 / FM_OUT ) x reference clock frequency x coef */
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tmp = tphy->src_ref_clk * tphy->src_coef;
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tmp = (tmp * U3P_FM_DET_CYCLE_CNT) / fm_out;
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calibration_val = DIV_ROUND_CLOSEST(tmp, U3P_SR_COEF_DIVISOR);
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} else {
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/* if FM detection fail, set default value */
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calibration_val = 4;
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}
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dev_dbg(tphy->dev, "phy:%d, fm_out:%d, calib:%d (clk:%d, coef:%d)\n",
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instance->index, fm_out, calibration_val,
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tphy->src_ref_clk, tphy->src_coef);
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/* set HS slew rate */
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mtk_phy_update_field(com + U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCTRL,
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calibration_val);
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/* disable USB ring oscillator */
|
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mtk_phy_clear_bits(com + U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCAL_EN);
|
|
}
|
|
|
|
static void u3_phy_instance_init(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u3phy_banks *u3_banks = &instance->u3_banks;
|
|
void __iomem *phya = u3_banks->phya;
|
|
void __iomem *phyd = u3_banks->phyd;
|
|
|
|
/* gating PCIe Analog XTAL clock */
|
|
mtk_phy_set_bits(u3_banks->spllc + U3P_SPLLC_XTALCTL3,
|
|
XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD);
|
|
|
|
/* gating XSQ */
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG0, P3A_RG_XTAL_EXT_EN_U3, 2);
|
|
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_REG9, P3A_RG_RX_DAC_MUX, 4);
|
|
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_REG6, P3A_RG_TX_EIDLE_CM, 0xe);
|
|
|
|
mtk_phy_update_bits(u3_banks->phyd + U3P_U3_PHYD_CDR1,
|
|
P3D_RG_CDR_BIR_LTD0 | P3D_RG_CDR_BIR_LTD1,
|
|
FIELD_PREP(P3D_RG_CDR_BIR_LTD0, 0xc) |
|
|
FIELD_PREP(P3D_RG_CDR_BIR_LTD1, 0x3));
|
|
|
|
mtk_phy_update_field(phyd + U3P_U3_PHYD_LFPS1, P3D_RG_FWAKE_TH, 0x34);
|
|
|
|
mtk_phy_update_field(phyd + U3P_U3_PHYD_RXDET1, P3D_RG_RXDET_STB2_SET, 0x10);
|
|
|
|
mtk_phy_update_field(phyd + U3P_U3_PHYD_RXDET2, P3D_RG_RXDET_STB2_SET_P3, 0x10);
|
|
|
|
dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
|
|
}
|
|
|
|
static void u2_phy_pll_26m_set(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
void __iomem *com = u2_banks->com;
|
|
|
|
if (!tphy->pdata->sw_pll_48m_to_26m)
|
|
return;
|
|
|
|
mtk_phy_update_field(com + U3P_USBPHYACR0, PA0_USB20_PLL_PREDIV, 0);
|
|
|
|
mtk_phy_update_field(com + U3P_USBPHYACR2, PA2_RG_U2PLL_BW, 3);
|
|
|
|
writel(P2R_RG_U2PLL_FBDIV_26M, com + U3P_U2PHYA_RESV);
|
|
|
|
mtk_phy_set_bits(com + U3P_U2PHYA_RESV1,
|
|
P2R_RG_U2PLL_FRA_EN | P2R_RG_U2PLL_REFCLK_SEL);
|
|
}
|
|
|
|
static void u2_phy_instance_init(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
void __iomem *com = u2_banks->com;
|
|
u32 index = instance->index;
|
|
|
|
/* switch to USB function, and enable usb pll */
|
|
mtk_phy_clear_bits(com + U3P_U2PHYDTM0, P2C_FORCE_UART_EN | P2C_FORCE_SUSPENDM);
|
|
|
|
mtk_phy_clear_bits(com + U3P_U2PHYDTM0,
|
|
P2C_RG_XCVRSEL | P2C_RG_DATAIN | P2C_DTM0_PART_MASK);
|
|
|
|
mtk_phy_clear_bits(com + U3P_U2PHYDTM1, P2C_RG_UART_EN);
|
|
|
|
mtk_phy_set_bits(com + U3P_USBPHYACR0, PA0_RG_USB20_INTR_EN);
|
|
|
|
/* disable switch 100uA current to SSUSB */
|
|
mtk_phy_clear_bits(com + U3P_USBPHYACR5, PA5_RG_U2_HS_100U_U3_EN);
|
|
|
|
mtk_phy_clear_bits(com + U3P_U2PHYACR4, P2C_U2_GPIO_CTR_MSK);
|
|
|
|
if (tphy->pdata->avoid_rx_sen_degradation) {
|
|
if (!index) {
|
|
mtk_phy_set_bits(com + U3P_USBPHYACR2, PA2_RG_SIF_U2PLL_FORCE_EN);
|
|
|
|
mtk_phy_clear_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
|
|
} else {
|
|
mtk_phy_set_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
|
|
|
|
mtk_phy_set_bits(com + U3P_U2PHYDTM0,
|
|
P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM);
|
|
}
|
|
}
|
|
|
|
/* DP/DM BC1.1 path Disable */
|
|
mtk_phy_clear_bits(com + U3P_USBPHYACR6, PA6_RG_U2_BC11_SW_EN);
|
|
|
|
mtk_phy_update_field(com + U3P_USBPHYACR6, PA6_RG_U2_SQTH, 2);
|
|
|
|
/* Workaround only for mt8195, HW fix it for others (V3) */
|
|
u2_phy_pll_26m_set(tphy, instance);
|
|
|
|
dev_dbg(tphy->dev, "%s(%d)\n", __func__, index);
|
|
}
|
|
|
|
static void u2_phy_instance_power_on(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
void __iomem *com = u2_banks->com;
|
|
u32 index = instance->index;
|
|
|
|
/* OTG Enable */
|
|
mtk_phy_set_bits(com + U3P_USBPHYACR6, PA6_RG_U2_OTG_VBUSCMP_EN);
|
|
|
|
mtk_phy_set_bits(com + U3P_U2PHYDTM1, P2C_RG_VBUSVALID | P2C_RG_AVALID);
|
|
|
|
mtk_phy_clear_bits(com + U3P_U2PHYDTM1, P2C_RG_SESSEND);
|
|
|
|
if (tphy->pdata->avoid_rx_sen_degradation && index) {
|
|
mtk_phy_set_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
|
|
|
|
mtk_phy_set_bits(com + U3P_U2PHYDTM0, P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM);
|
|
}
|
|
dev_dbg(tphy->dev, "%s(%d)\n", __func__, index);
|
|
}
|
|
|
|
static void u2_phy_instance_power_off(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
void __iomem *com = u2_banks->com;
|
|
u32 index = instance->index;
|
|
|
|
/* OTG Disable */
|
|
mtk_phy_clear_bits(com + U3P_USBPHYACR6, PA6_RG_U2_OTG_VBUSCMP_EN);
|
|
|
|
mtk_phy_clear_bits(com + U3P_U2PHYDTM1, P2C_RG_VBUSVALID | P2C_RG_AVALID);
|
|
|
|
mtk_phy_set_bits(com + U3P_U2PHYDTM1, P2C_RG_SESSEND);
|
|
|
|
if (tphy->pdata->avoid_rx_sen_degradation && index) {
|
|
mtk_phy_clear_bits(com + U3P_U2PHYDTM0, P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM);
|
|
|
|
mtk_phy_clear_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
|
|
}
|
|
|
|
dev_dbg(tphy->dev, "%s(%d)\n", __func__, index);
|
|
}
|
|
|
|
static void u2_phy_instance_exit(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
void __iomem *com = u2_banks->com;
|
|
u32 index = instance->index;
|
|
|
|
if (tphy->pdata->avoid_rx_sen_degradation && index) {
|
|
mtk_phy_clear_bits(com + U3D_U2PHYDCR0, P2C_RG_SIF_U2PLL_FORCE_ON);
|
|
|
|
mtk_phy_clear_bits(com + U3P_U2PHYDTM0, P2C_FORCE_SUSPENDM);
|
|
}
|
|
}
|
|
|
|
static void u2_phy_instance_set_mode(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance,
|
|
enum phy_mode mode)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
u32 tmp;
|
|
|
|
tmp = readl(u2_banks->com + U3P_U2PHYDTM1);
|
|
switch (mode) {
|
|
case PHY_MODE_USB_DEVICE:
|
|
tmp |= P2C_FORCE_IDDIG | P2C_RG_IDDIG;
|
|
break;
|
|
case PHY_MODE_USB_HOST:
|
|
tmp |= P2C_FORCE_IDDIG;
|
|
tmp &= ~P2C_RG_IDDIG;
|
|
break;
|
|
case PHY_MODE_USB_OTG:
|
|
tmp &= ~(P2C_FORCE_IDDIG | P2C_RG_IDDIG);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
writel(tmp, u2_banks->com + U3P_U2PHYDTM1);
|
|
}
|
|
|
|
static void pcie_phy_instance_init(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u3phy_banks *u3_banks = &instance->u3_banks;
|
|
void __iomem *phya = u3_banks->phya;
|
|
|
|
if (tphy->pdata->version != MTK_PHY_V1)
|
|
return;
|
|
|
|
mtk_phy_update_bits(phya + U3P_U3_PHYA_DA_REG0,
|
|
P3A_RG_XTAL_EXT_PE1H | P3A_RG_XTAL_EXT_PE2H,
|
|
FIELD_PREP(P3A_RG_XTAL_EXT_PE1H, 0x2) |
|
|
FIELD_PREP(P3A_RG_XTAL_EXT_PE2H, 0x2));
|
|
|
|
/* ref clk drive */
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_REG1, P3A_RG_CLKDRV_AMP, 0x4);
|
|
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_REG0, P3A_RG_CLKDRV_OFF, 0x1);
|
|
|
|
/* SSC delta -5000ppm */
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG20, P3A_RG_PLL_DELTA1_PE2H, 0x3c);
|
|
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG25, P3A_RG_PLL_DELTA_PE2H, 0x36);
|
|
|
|
/* change pll BW 0.6M */
|
|
mtk_phy_update_bits(phya + U3P_U3_PHYA_DA_REG5,
|
|
P3A_RG_PLL_BR_PE2H | P3A_RG_PLL_IC_PE2H,
|
|
FIELD_PREP(P3A_RG_PLL_BR_PE2H, 0x1) |
|
|
FIELD_PREP(P3A_RG_PLL_IC_PE2H, 0x1));
|
|
|
|
mtk_phy_update_bits(phya + U3P_U3_PHYA_DA_REG4,
|
|
P3A_RG_PLL_DIVEN_PE2H | P3A_RG_PLL_BC_PE2H,
|
|
FIELD_PREP(P3A_RG_PLL_BC_PE2H, 0x3));
|
|
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG6, P3A_RG_PLL_IR_PE2H, 0x2);
|
|
|
|
mtk_phy_update_field(phya + U3P_U3_PHYA_DA_REG7, P3A_RG_PLL_BP_PE2H, 0xa);
|
|
|
|
/* Tx Detect Rx Timing: 10us -> 5us */
|
|
mtk_phy_update_field(u3_banks->phyd + U3P_U3_PHYD_RXDET1,
|
|
P3D_RG_RXDET_STB2_SET, 0x10);
|
|
|
|
mtk_phy_update_field(u3_banks->phyd + U3P_U3_PHYD_RXDET2,
|
|
P3D_RG_RXDET_STB2_SET_P3, 0x10);
|
|
|
|
/* wait for PCIe subsys register to active */
|
|
usleep_range(2500, 3000);
|
|
dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
|
|
}
|
|
|
|
static void pcie_phy_instance_power_on(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u3phy_banks *bank = &instance->u3_banks;
|
|
|
|
mtk_phy_clear_bits(bank->chip + U3P_U3_CHIP_GPIO_CTLD,
|
|
P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST);
|
|
|
|
mtk_phy_clear_bits(bank->chip + U3P_U3_CHIP_GPIO_CTLE,
|
|
P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD);
|
|
}
|
|
|
|
static void pcie_phy_instance_power_off(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
|
|
{
|
|
struct u3phy_banks *bank = &instance->u3_banks;
|
|
|
|
mtk_phy_set_bits(bank->chip + U3P_U3_CHIP_GPIO_CTLD,
|
|
P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST);
|
|
|
|
mtk_phy_set_bits(bank->chip + U3P_U3_CHIP_GPIO_CTLE,
|
|
P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD);
|
|
}
|
|
|
|
static void sata_phy_instance_init(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u3phy_banks *u3_banks = &instance->u3_banks;
|
|
void __iomem *phyd = u3_banks->phyd;
|
|
|
|
/* charge current adjustment */
|
|
mtk_phy_update_bits(phyd + ANA_RG_CTRL_SIGNAL6,
|
|
RG_CDR_BIRLTR_GEN1_MSK | RG_CDR_BC_GEN1_MSK,
|
|
FIELD_PREP(RG_CDR_BIRLTR_GEN1_MSK, 0x6) |
|
|
FIELD_PREP(RG_CDR_BC_GEN1_MSK, 0x1a));
|
|
|
|
mtk_phy_update_field(phyd + ANA_EQ_EYE_CTRL_SIGNAL4, RG_CDR_BIRLTD0_GEN1_MSK, 0x18);
|
|
|
|
mtk_phy_update_field(phyd + ANA_EQ_EYE_CTRL_SIGNAL5, RG_CDR_BIRLTD0_GEN3_MSK, 0x06);
|
|
|
|
mtk_phy_update_bits(phyd + ANA_RG_CTRL_SIGNAL4,
|
|
RG_CDR_BICLTR_GEN1_MSK | RG_CDR_BR_GEN2_MSK,
|
|
FIELD_PREP(RG_CDR_BICLTR_GEN1_MSK, 0x0c) |
|
|
FIELD_PREP(RG_CDR_BR_GEN2_MSK, 0x07));
|
|
|
|
mtk_phy_update_bits(phyd + PHYD_CTRL_SIGNAL_MODE4,
|
|
RG_CDR_BICLTD0_GEN1_MSK | RG_CDR_BICLTD1_GEN1_MSK,
|
|
FIELD_PREP(RG_CDR_BICLTD0_GEN1_MSK, 0x08) |
|
|
FIELD_PREP(RG_CDR_BICLTD1_GEN1_MSK, 0x02));
|
|
|
|
mtk_phy_update_field(phyd + PHYD_DESIGN_OPTION2, RG_LOCK_CNT_SEL_MSK, 0x02);
|
|
|
|
mtk_phy_update_bits(phyd + PHYD_DESIGN_OPTION9,
|
|
RG_T2_MIN_MSK | RG_TG_MIN_MSK,
|
|
FIELD_PREP(RG_T2_MIN_MSK, 0x12) |
|
|
FIELD_PREP(RG_TG_MIN_MSK, 0x04));
|
|
|
|
mtk_phy_update_bits(phyd + PHYD_DESIGN_OPTION9,
|
|
RG_T2_MAX_MSK | RG_TG_MAX_MSK,
|
|
FIELD_PREP(RG_T2_MAX_MSK, 0x31) |
|
|
FIELD_PREP(RG_TG_MAX_MSK, 0x0e));
|
|
|
|
mtk_phy_update_field(phyd + ANA_RG_CTRL_SIGNAL1, RG_IDRV_0DB_GEN1_MSK, 0x20);
|
|
|
|
mtk_phy_update_field(phyd + ANA_EQ_EYE_CTRL_SIGNAL1, RG_EQ_DLEQ_LFI_GEN1_MSK, 0x03);
|
|
|
|
dev_dbg(tphy->dev, "%s(%d)\n", __func__, instance->index);
|
|
}
|
|
|
|
static void phy_v1_banks_init(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
struct u3phy_banks *u3_banks = &instance->u3_banks;
|
|
|
|
switch (instance->type) {
|
|
case PHY_TYPE_USB2:
|
|
u2_banks->misc = NULL;
|
|
u2_banks->fmreg = tphy->sif_base + SSUSB_SIFSLV_V1_U2FREQ;
|
|
u2_banks->com = instance->port_base + SSUSB_SIFSLV_V1_U2PHY_COM;
|
|
break;
|
|
case PHY_TYPE_USB3:
|
|
case PHY_TYPE_PCIE:
|
|
u3_banks->spllc = tphy->sif_base + SSUSB_SIFSLV_V1_SPLLC;
|
|
u3_banks->chip = tphy->sif_base + SSUSB_SIFSLV_V1_CHIP;
|
|
u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V1_U3PHYD;
|
|
u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V1_U3PHYA;
|
|
break;
|
|
case PHY_TYPE_SATA:
|
|
u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V1_U3PHYD;
|
|
break;
|
|
default:
|
|
dev_err(tphy->dev, "incompatible PHY type\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void phy_v2_banks_init(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
struct u3phy_banks *u3_banks = &instance->u3_banks;
|
|
|
|
switch (instance->type) {
|
|
case PHY_TYPE_USB2:
|
|
u2_banks->misc = instance->port_base + SSUSB_SIFSLV_V2_MISC;
|
|
u2_banks->fmreg = instance->port_base + SSUSB_SIFSLV_V2_U2FREQ;
|
|
u2_banks->com = instance->port_base + SSUSB_SIFSLV_V2_U2PHY_COM;
|
|
break;
|
|
case PHY_TYPE_USB3:
|
|
case PHY_TYPE_PCIE:
|
|
u3_banks->spllc = instance->port_base + SSUSB_SIFSLV_V2_SPLLC;
|
|
u3_banks->chip = instance->port_base + SSUSB_SIFSLV_V2_CHIP;
|
|
u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V2_U3PHYD;
|
|
u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V2_U3PHYA;
|
|
break;
|
|
default:
|
|
dev_err(tphy->dev, "incompatible PHY type\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void phy_parse_property(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct device *dev = &instance->phy->dev;
|
|
|
|
if (instance->type != PHY_TYPE_USB2)
|
|
return;
|
|
|
|
instance->bc12_en = device_property_read_bool(dev, "mediatek,bc12");
|
|
device_property_read_u32(dev, "mediatek,eye-src",
|
|
&instance->eye_src);
|
|
device_property_read_u32(dev, "mediatek,eye-vrt",
|
|
&instance->eye_vrt);
|
|
device_property_read_u32(dev, "mediatek,eye-term",
|
|
&instance->eye_term);
|
|
device_property_read_u32(dev, "mediatek,intr",
|
|
&instance->intr);
|
|
device_property_read_u32(dev, "mediatek,discth",
|
|
&instance->discth);
|
|
device_property_read_u32(dev, "mediatek,pre-emphasis",
|
|
&instance->pre_emphasis);
|
|
dev_dbg(dev, "bc12:%d, src:%d, vrt:%d, term:%d, intr:%d, disc:%d\n",
|
|
instance->bc12_en, instance->eye_src,
|
|
instance->eye_vrt, instance->eye_term,
|
|
instance->intr, instance->discth);
|
|
dev_dbg(dev, "pre-emp:%d\n", instance->pre_emphasis);
|
|
}
|
|
|
|
static void u2_phy_props_set(struct mtk_tphy *tphy,
|
|
struct mtk_phy_instance *instance)
|
|
{
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
void __iomem *com = u2_banks->com;
|
|
|
|
if (instance->bc12_en) /* BC1.2 path Enable */
|
|
mtk_phy_set_bits(com + U3P_U2PHYBC12C, P2C_RG_CHGDT_EN);
|
|
|
|
if (tphy->pdata->version < MTK_PHY_V3 && instance->eye_src)
|
|
mtk_phy_update_field(com + U3P_USBPHYACR5, PA5_RG_U2_HSTX_SRCTRL,
|
|
instance->eye_src);
|
|
|
|
if (instance->eye_vrt)
|
|
mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_VRT_SEL,
|
|
instance->eye_vrt);
|
|
|
|
if (instance->eye_term)
|
|
mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_TERM_SEL,
|
|
instance->eye_term);
|
|
|
|
if (instance->intr) {
|
|
if (u2_banks->misc)
|
|
mtk_phy_set_bits(u2_banks->misc + U3P_MISC_REG1,
|
|
MR1_EFUSE_AUTO_LOAD_DIS);
|
|
|
|
mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_INTR_CAL,
|
|
instance->intr);
|
|
}
|
|
|
|
if (instance->discth)
|
|
mtk_phy_update_field(com + U3P_USBPHYACR6, PA6_RG_U2_DISCTH,
|
|
instance->discth);
|
|
|
|
if (instance->pre_emphasis)
|
|
mtk_phy_update_field(com + U3P_USBPHYACR6, PA6_RG_U2_PRE_EMP,
|
|
instance->pre_emphasis);
|
|
}
|
|
|
|
/* type switch for usb3/pcie/sgmii/sata */
|
|
static int phy_type_syscon_get(struct mtk_phy_instance *instance,
|
|
struct device_node *dn)
|
|
{
|
|
struct of_phandle_args args;
|
|
int ret;
|
|
|
|
/* type switch function is optional */
|
|
if (!of_property_read_bool(dn, "mediatek,syscon-type"))
|
|
return 0;
|
|
|
|
ret = of_parse_phandle_with_fixed_args(dn, "mediatek,syscon-type",
|
|
2, 0, &args);
|
|
if (ret)
|
|
return ret;
|
|
|
|
instance->type_sw_reg = args.args[0];
|
|
instance->type_sw_index = args.args[1] & 0x3; /* <=3 */
|
|
instance->type_sw = syscon_node_to_regmap(args.np);
|
|
of_node_put(args.np);
|
|
dev_info(&instance->phy->dev, "type_sw - reg %#x, index %d\n",
|
|
instance->type_sw_reg, instance->type_sw_index);
|
|
|
|
return PTR_ERR_OR_ZERO(instance->type_sw);
|
|
}
|
|
|
|
static int phy_type_set(struct mtk_phy_instance *instance)
|
|
{
|
|
int type;
|
|
u32 offset;
|
|
|
|
if (!instance->type_sw)
|
|
return 0;
|
|
|
|
switch (instance->type) {
|
|
case PHY_TYPE_USB3:
|
|
type = RG_PHY_SW_USB3;
|
|
break;
|
|
case PHY_TYPE_PCIE:
|
|
type = RG_PHY_SW_PCIE;
|
|
break;
|
|
case PHY_TYPE_SGMII:
|
|
type = RG_PHY_SW_SGMII;
|
|
break;
|
|
case PHY_TYPE_SATA:
|
|
type = RG_PHY_SW_SATA;
|
|
break;
|
|
case PHY_TYPE_USB2:
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
offset = instance->type_sw_index * BITS_PER_BYTE;
|
|
regmap_update_bits(instance->type_sw, instance->type_sw_reg,
|
|
RG_PHY_SW_TYPE << offset, type << offset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int phy_efuse_get(struct mtk_tphy *tphy, struct mtk_phy_instance *instance)
|
|
{
|
|
struct device *dev = &instance->phy->dev;
|
|
int ret = 0;
|
|
|
|
/* tphy v1 doesn't support sw efuse, skip it */
|
|
if (!tphy->pdata->sw_efuse_supported) {
|
|
instance->efuse_sw_en = 0;
|
|
return 0;
|
|
}
|
|
|
|
/* software efuse is optional */
|
|
instance->efuse_sw_en = device_property_read_bool(dev, "nvmem-cells");
|
|
if (!instance->efuse_sw_en)
|
|
return 0;
|
|
|
|
switch (instance->type) {
|
|
case PHY_TYPE_USB2:
|
|
ret = nvmem_cell_read_variable_le_u32(dev, "intr", &instance->efuse_intr);
|
|
if (ret) {
|
|
dev_err(dev, "fail to get u2 intr efuse, %d\n", ret);
|
|
break;
|
|
}
|
|
|
|
/* no efuse, ignore it */
|
|
if (!instance->efuse_intr) {
|
|
dev_warn(dev, "no u2 intr efuse, but dts enable it\n");
|
|
instance->efuse_sw_en = 0;
|
|
break;
|
|
}
|
|
|
|
dev_dbg(dev, "u2 efuse - intr %x\n", instance->efuse_intr);
|
|
break;
|
|
|
|
case PHY_TYPE_USB3:
|
|
case PHY_TYPE_PCIE:
|
|
ret = nvmem_cell_read_variable_le_u32(dev, "intr", &instance->efuse_intr);
|
|
if (ret) {
|
|
dev_err(dev, "fail to get u3 intr efuse, %d\n", ret);
|
|
break;
|
|
}
|
|
|
|
ret = nvmem_cell_read_variable_le_u32(dev, "rx_imp", &instance->efuse_rx_imp);
|
|
if (ret) {
|
|
dev_err(dev, "fail to get u3 rx_imp efuse, %d\n", ret);
|
|
break;
|
|
}
|
|
|
|
ret = nvmem_cell_read_variable_le_u32(dev, "tx_imp", &instance->efuse_tx_imp);
|
|
if (ret) {
|
|
dev_err(dev, "fail to get u3 tx_imp efuse, %d\n", ret);
|
|
break;
|
|
}
|
|
|
|
/* no efuse, ignore it */
|
|
if (!instance->efuse_intr &&
|
|
!instance->efuse_rx_imp &&
|
|
!instance->efuse_tx_imp) {
|
|
dev_warn(dev, "no u3 intr efuse, but dts enable it\n");
|
|
instance->efuse_sw_en = 0;
|
|
break;
|
|
}
|
|
|
|
dev_dbg(dev, "u3 efuse - intr %x, rx_imp %x, tx_imp %x\n",
|
|
instance->efuse_intr, instance->efuse_rx_imp,instance->efuse_tx_imp);
|
|
break;
|
|
default:
|
|
dev_err(dev, "no sw efuse for type %d\n", instance->type);
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void phy_efuse_set(struct mtk_phy_instance *instance)
|
|
{
|
|
struct device *dev = &instance->phy->dev;
|
|
struct u2phy_banks *u2_banks = &instance->u2_banks;
|
|
struct u3phy_banks *u3_banks = &instance->u3_banks;
|
|
|
|
if (!instance->efuse_sw_en)
|
|
return;
|
|
|
|
switch (instance->type) {
|
|
case PHY_TYPE_USB2:
|
|
mtk_phy_set_bits(u2_banks->misc + U3P_MISC_REG1, MR1_EFUSE_AUTO_LOAD_DIS);
|
|
|
|
mtk_phy_update_field(u2_banks->com + U3P_USBPHYACR1, PA1_RG_INTR_CAL,
|
|
instance->efuse_intr);
|
|
break;
|
|
case PHY_TYPE_USB3:
|
|
case PHY_TYPE_PCIE:
|
|
mtk_phy_set_bits(u3_banks->phyd + U3P_U3_PHYD_RSV, P3D_RG_EFUSE_AUTO_LOAD_DIS);
|
|
|
|
mtk_phy_update_field(u3_banks->phyd + U3P_U3_PHYD_IMPCAL0, P3D_RG_TX_IMPEL,
|
|
instance->efuse_tx_imp);
|
|
mtk_phy_set_bits(u3_banks->phyd + U3P_U3_PHYD_IMPCAL0, P3D_RG_FORCE_TX_IMPEL);
|
|
|
|
mtk_phy_update_field(u3_banks->phyd + U3P_U3_PHYD_IMPCAL1, P3D_RG_RX_IMPEL,
|
|
instance->efuse_rx_imp);
|
|
mtk_phy_set_bits(u3_banks->phyd + U3P_U3_PHYD_IMPCAL1, P3D_RG_FORCE_RX_IMPEL);
|
|
|
|
mtk_phy_update_field(u3_banks->phya + U3P_U3_PHYA_REG0, P3A_RG_IEXT_INTR,
|
|
instance->efuse_intr);
|
|
break;
|
|
default:
|
|
dev_warn(dev, "no sw efuse for type %d\n", instance->type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int mtk_phy_init(struct phy *phy)
|
|
{
|
|
struct mtk_phy_instance *instance = phy_get_drvdata(phy);
|
|
struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
|
|
int ret;
|
|
|
|
ret = clk_bulk_prepare_enable(TPHY_CLKS_CNT, instance->clks);
|
|
if (ret)
|
|
return ret;
|
|
|
|
phy_efuse_set(instance);
|
|
|
|
switch (instance->type) {
|
|
case PHY_TYPE_USB2:
|
|
u2_phy_instance_init(tphy, instance);
|
|
u2_phy_props_set(tphy, instance);
|
|
break;
|
|
case PHY_TYPE_USB3:
|
|
u3_phy_instance_init(tphy, instance);
|
|
break;
|
|
case PHY_TYPE_PCIE:
|
|
pcie_phy_instance_init(tphy, instance);
|
|
break;
|
|
case PHY_TYPE_SATA:
|
|
sata_phy_instance_init(tphy, instance);
|
|
break;
|
|
case PHY_TYPE_SGMII:
|
|
/* nothing to do, only used to set type */
|
|
break;
|
|
default:
|
|
dev_err(tphy->dev, "incompatible PHY type\n");
|
|
clk_bulk_disable_unprepare(TPHY_CLKS_CNT, instance->clks);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_phy_power_on(struct phy *phy)
|
|
{
|
|
struct mtk_phy_instance *instance = phy_get_drvdata(phy);
|
|
struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
|
|
|
|
if (instance->type == PHY_TYPE_USB2) {
|
|
u2_phy_instance_power_on(tphy, instance);
|
|
hs_slew_rate_calibrate(tphy, instance);
|
|
} else if (instance->type == PHY_TYPE_PCIE) {
|
|
pcie_phy_instance_power_on(tphy, instance);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_phy_power_off(struct phy *phy)
|
|
{
|
|
struct mtk_phy_instance *instance = phy_get_drvdata(phy);
|
|
struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
|
|
|
|
if (instance->type == PHY_TYPE_USB2)
|
|
u2_phy_instance_power_off(tphy, instance);
|
|
else if (instance->type == PHY_TYPE_PCIE)
|
|
pcie_phy_instance_power_off(tphy, instance);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_phy_exit(struct phy *phy)
|
|
{
|
|
struct mtk_phy_instance *instance = phy_get_drvdata(phy);
|
|
struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
|
|
|
|
if (instance->type == PHY_TYPE_USB2)
|
|
u2_phy_instance_exit(tphy, instance);
|
|
|
|
clk_bulk_disable_unprepare(TPHY_CLKS_CNT, instance->clks);
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_phy_set_mode(struct phy *phy, enum phy_mode mode, int submode)
|
|
{
|
|
struct mtk_phy_instance *instance = phy_get_drvdata(phy);
|
|
struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
|
|
|
|
if (instance->type == PHY_TYPE_USB2)
|
|
u2_phy_instance_set_mode(tphy, instance, mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct phy *mtk_phy_xlate(struct device *dev,
|
|
struct of_phandle_args *args)
|
|
{
|
|
struct mtk_tphy *tphy = dev_get_drvdata(dev);
|
|
struct mtk_phy_instance *instance = NULL;
|
|
struct device_node *phy_np = args->np;
|
|
int index;
|
|
int ret;
|
|
|
|
if (args->args_count != 1) {
|
|
dev_err(dev, "invalid number of cells in 'phy' property\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
for (index = 0; index < tphy->nphys; index++)
|
|
if (phy_np == tphy->phys[index]->phy->dev.of_node) {
|
|
instance = tphy->phys[index];
|
|
break;
|
|
}
|
|
|
|
if (!instance) {
|
|
dev_err(dev, "failed to find appropriate phy\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
instance->type = args->args[0];
|
|
if (!(instance->type == PHY_TYPE_USB2 ||
|
|
instance->type == PHY_TYPE_USB3 ||
|
|
instance->type == PHY_TYPE_PCIE ||
|
|
instance->type == PHY_TYPE_SATA ||
|
|
instance->type == PHY_TYPE_SGMII)) {
|
|
dev_err(dev, "unsupported device type: %d\n", instance->type);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
switch (tphy->pdata->version) {
|
|
case MTK_PHY_V1:
|
|
phy_v1_banks_init(tphy, instance);
|
|
break;
|
|
case MTK_PHY_V2:
|
|
case MTK_PHY_V3:
|
|
phy_v2_banks_init(tphy, instance);
|
|
break;
|
|
default:
|
|
dev_err(dev, "phy version is not supported\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
ret = phy_efuse_get(tphy, instance);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
phy_parse_property(tphy, instance);
|
|
phy_type_set(instance);
|
|
|
|
return instance->phy;
|
|
}
|
|
|
|
static const struct phy_ops mtk_tphy_ops = {
|
|
.init = mtk_phy_init,
|
|
.exit = mtk_phy_exit,
|
|
.power_on = mtk_phy_power_on,
|
|
.power_off = mtk_phy_power_off,
|
|
.set_mode = mtk_phy_set_mode,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static const struct mtk_phy_pdata tphy_v1_pdata = {
|
|
.avoid_rx_sen_degradation = false,
|
|
.version = MTK_PHY_V1,
|
|
};
|
|
|
|
static const struct mtk_phy_pdata tphy_v2_pdata = {
|
|
.avoid_rx_sen_degradation = false,
|
|
.sw_efuse_supported = true,
|
|
.version = MTK_PHY_V2,
|
|
};
|
|
|
|
static const struct mtk_phy_pdata tphy_v3_pdata = {
|
|
.sw_efuse_supported = true,
|
|
.version = MTK_PHY_V3,
|
|
};
|
|
|
|
static const struct mtk_phy_pdata mt8173_pdata = {
|
|
.avoid_rx_sen_degradation = true,
|
|
.version = MTK_PHY_V1,
|
|
};
|
|
|
|
static const struct mtk_phy_pdata mt8195_pdata = {
|
|
.sw_pll_48m_to_26m = true,
|
|
.sw_efuse_supported = true,
|
|
.version = MTK_PHY_V3,
|
|
};
|
|
|
|
static const struct of_device_id mtk_tphy_id_table[] = {
|
|
{ .compatible = "mediatek,mt2701-u3phy", .data = &tphy_v1_pdata },
|
|
{ .compatible = "mediatek,mt2712-u3phy", .data = &tphy_v2_pdata },
|
|
{ .compatible = "mediatek,mt8173-u3phy", .data = &mt8173_pdata },
|
|
{ .compatible = "mediatek,mt8195-tphy", .data = &mt8195_pdata },
|
|
{ .compatible = "mediatek,generic-tphy-v1", .data = &tphy_v1_pdata },
|
|
{ .compatible = "mediatek,generic-tphy-v2", .data = &tphy_v2_pdata },
|
|
{ .compatible = "mediatek,generic-tphy-v3", .data = &tphy_v3_pdata },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mtk_tphy_id_table);
|
|
|
|
static int mtk_tphy_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *np = dev->of_node;
|
|
struct device_node *child_np;
|
|
struct phy_provider *provider;
|
|
struct resource *sif_res;
|
|
struct mtk_tphy *tphy;
|
|
struct resource res;
|
|
int port, retval;
|
|
|
|
tphy = devm_kzalloc(dev, sizeof(*tphy), GFP_KERNEL);
|
|
if (!tphy)
|
|
return -ENOMEM;
|
|
|
|
tphy->pdata = of_device_get_match_data(dev);
|
|
if (!tphy->pdata)
|
|
return -EINVAL;
|
|
|
|
tphy->nphys = of_get_child_count(np);
|
|
tphy->phys = devm_kcalloc(dev, tphy->nphys,
|
|
sizeof(*tphy->phys), GFP_KERNEL);
|
|
if (!tphy->phys)
|
|
return -ENOMEM;
|
|
|
|
tphy->dev = dev;
|
|
platform_set_drvdata(pdev, tphy);
|
|
|
|
sif_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
/* SATA phy of V1 needn't it if not shared with PCIe or USB */
|
|
if (sif_res && tphy->pdata->version == MTK_PHY_V1) {
|
|
/* get banks shared by multiple phys */
|
|
tphy->sif_base = devm_ioremap_resource(dev, sif_res);
|
|
if (IS_ERR(tphy->sif_base)) {
|
|
dev_err(dev, "failed to remap sif regs\n");
|
|
return PTR_ERR(tphy->sif_base);
|
|
}
|
|
}
|
|
|
|
if (tphy->pdata->version < MTK_PHY_V3) {
|
|
tphy->src_ref_clk = U3P_REF_CLK;
|
|
tphy->src_coef = U3P_SLEW_RATE_COEF;
|
|
/* update parameters of slew rate calibrate if exist */
|
|
device_property_read_u32(dev, "mediatek,src-ref-clk-mhz",
|
|
&tphy->src_ref_clk);
|
|
device_property_read_u32(dev, "mediatek,src-coef",
|
|
&tphy->src_coef);
|
|
}
|
|
|
|
port = 0;
|
|
for_each_child_of_node(np, child_np) {
|
|
struct mtk_phy_instance *instance;
|
|
struct clk_bulk_data *clks;
|
|
struct device *subdev;
|
|
struct phy *phy;
|
|
|
|
instance = devm_kzalloc(dev, sizeof(*instance), GFP_KERNEL);
|
|
if (!instance) {
|
|
retval = -ENOMEM;
|
|
goto put_child;
|
|
}
|
|
|
|
tphy->phys[port] = instance;
|
|
|
|
phy = devm_phy_create(dev, child_np, &mtk_tphy_ops);
|
|
if (IS_ERR(phy)) {
|
|
dev_err(dev, "failed to create phy\n");
|
|
retval = PTR_ERR(phy);
|
|
goto put_child;
|
|
}
|
|
|
|
subdev = &phy->dev;
|
|
retval = of_address_to_resource(child_np, 0, &res);
|
|
if (retval) {
|
|
dev_err(subdev, "failed to get address resource(id-%d)\n",
|
|
port);
|
|
goto put_child;
|
|
}
|
|
|
|
instance->port_base = devm_ioremap_resource(subdev, &res);
|
|
if (IS_ERR(instance->port_base)) {
|
|
retval = PTR_ERR(instance->port_base);
|
|
goto put_child;
|
|
}
|
|
|
|
instance->phy = phy;
|
|
instance->index = port;
|
|
phy_set_drvdata(phy, instance);
|
|
port++;
|
|
|
|
clks = instance->clks;
|
|
clks[0].id = "ref"; /* digital (& analog) clock */
|
|
clks[1].id = "da_ref"; /* analog clock */
|
|
retval = devm_clk_bulk_get_optional(subdev, TPHY_CLKS_CNT, clks);
|
|
if (retval)
|
|
goto put_child;
|
|
|
|
retval = phy_type_syscon_get(instance, child_np);
|
|
if (retval)
|
|
goto put_child;
|
|
}
|
|
|
|
provider = devm_of_phy_provider_register(dev, mtk_phy_xlate);
|
|
|
|
return PTR_ERR_OR_ZERO(provider);
|
|
put_child:
|
|
of_node_put(child_np);
|
|
return retval;
|
|
}
|
|
|
|
static struct platform_driver mtk_tphy_driver = {
|
|
.probe = mtk_tphy_probe,
|
|
.driver = {
|
|
.name = "mtk-tphy",
|
|
.of_match_table = mtk_tphy_id_table,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(mtk_tphy_driver);
|
|
|
|
MODULE_AUTHOR("Chunfeng Yun <chunfeng.yun@mediatek.com>");
|
|
MODULE_DESCRIPTION("MediaTek T-PHY driver");
|
|
MODULE_LICENSE("GPL v2");
|