400 lines
13 KiB
C
400 lines
13 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/clk-provider.h>
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#include <linux/mfd/syscon.h>
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#include <linux/slab.h>
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#include <dt-bindings/clock/at91.h>
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#include "pmc.h"
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static DEFINE_SPINLOCK(mck_lock);
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static const struct clk_master_characteristics mck_characteristics = {
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.output = { .min = 124000000, .max = 166000000 },
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.divisors = { 1, 2, 4, 3 },
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};
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static u8 plla_out[] = { 0 };
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static u16 plla_icpll[] = { 0 };
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static const struct clk_range plla_outputs[] = {
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{ .min = 600000000, .max = 1200000000 },
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};
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static const struct clk_pll_characteristics plla_characteristics = {
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.input = { .min = 12000000, .max = 24000000 },
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.num_output = ARRAY_SIZE(plla_outputs),
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.output = plla_outputs,
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.icpll = plla_icpll,
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.out = plla_out,
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};
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static const struct clk_pcr_layout sama5d2_pcr_layout = {
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.offset = 0x10c,
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.cmd = BIT(12),
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.gckcss_mask = GENMASK(10, 8),
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.pid_mask = GENMASK(6, 0),
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};
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static const struct {
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char *n;
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char *p;
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unsigned long flags;
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u8 id;
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} sama5d2_systemck[] = {
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/*
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* ddrck feeds DDR controller and is enabled by bootloader thus we need
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* to keep it enabled in case there is no Linux consumer for it.
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*/
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{ .n = "ddrck", .p = "masterck_div", .id = 2, .flags = CLK_IS_CRITICAL },
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{ .n = "lcdck", .p = "masterck_div", .id = 3 },
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{ .n = "uhpck", .p = "usbck", .id = 6 },
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{ .n = "udpck", .p = "usbck", .id = 7 },
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{ .n = "pck0", .p = "prog0", .id = 8 },
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{ .n = "pck1", .p = "prog1", .id = 9 },
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{ .n = "pck2", .p = "prog2", .id = 10 },
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{ .n = "iscck", .p = "masterck_div", .id = 18 },
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};
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static const struct {
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char *n;
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u8 id;
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struct clk_range r;
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} sama5d2_periph32ck[] = {
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{ .n = "macb0_clk", .id = 5, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "tdes_clk", .id = 11, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "matrix1_clk", .id = 14, },
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{ .n = "hsmc_clk", .id = 17, },
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{ .n = "pioA_clk", .id = 18, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "flx0_clk", .id = 19, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "flx1_clk", .id = 20, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "flx2_clk", .id = 21, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "flx3_clk", .id = 22, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "flx4_clk", .id = 23, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "uart0_clk", .id = 24, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "uart1_clk", .id = 25, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "uart2_clk", .id = 26, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "uart3_clk", .id = 27, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "uart4_clk", .id = 28, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "twi0_clk", .id = 29, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "twi1_clk", .id = 30, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "spi0_clk", .id = 33, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "spi1_clk", .id = 34, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "tcb0_clk", .id = 35, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "tcb1_clk", .id = 36, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "pwm_clk", .id = 38, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "adc_clk", .id = 40, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "uhphs_clk", .id = 41, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "udphs_clk", .id = 42, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "ssc0_clk", .id = 43, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "ssc1_clk", .id = 44, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "trng_clk", .id = 47, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "pdmic_clk", .id = 48, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "securam_clk", .id = 51, },
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{ .n = "i2s0_clk", .id = 54, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "i2s1_clk", .id = 55, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "can0_clk", .id = 56, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "can1_clk", .id = 57, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "ptc_clk", .id = 58, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "classd_clk", .id = 59, .r = { .min = 0, .max = 83000000 }, },
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};
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static const struct {
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char *n;
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unsigned long flags;
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u8 id;
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} sama5d2_periphck[] = {
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{ .n = "dma0_clk", .id = 6, },
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{ .n = "dma1_clk", .id = 7, },
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{ .n = "aes_clk", .id = 9, },
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{ .n = "aesb_clk", .id = 10, },
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{ .n = "sha_clk", .id = 12, },
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/*
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* mpddr_clk feeds DDR controller and is enabled by bootloader thus we
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* need to keep it enabled in case there is no Linux consumer for it.
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*/
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{ .n = "mpddr_clk", .id = 13, .flags = CLK_IS_CRITICAL },
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{ .n = "matrix0_clk", .id = 15, },
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{ .n = "sdmmc0_hclk", .id = 31, },
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{ .n = "sdmmc1_hclk", .id = 32, },
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{ .n = "lcdc_clk", .id = 45, },
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{ .n = "isc_clk", .id = 46, },
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{ .n = "qspi0_clk", .id = 52, },
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{ .n = "qspi1_clk", .id = 53, },
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};
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static const struct {
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char *n;
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u8 id;
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struct clk_range r;
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int chg_pid;
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} sama5d2_gck[] = {
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{ .n = "flx0_gclk", .id = 19, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "flx1_gclk", .id = 20, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "flx2_gclk", .id = 21, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "flx3_gclk", .id = 22, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "flx4_gclk", .id = 23, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "uart0_gclk", .id = 24, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "uart1_gclk", .id = 25, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "uart2_gclk", .id = 26, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "uart3_gclk", .id = 27, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "uart4_gclk", .id = 28, .chg_pid = INT_MIN, .r = { .min = 0, .max = 27666666 }, },
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{ .n = "sdmmc0_gclk", .id = 31, .chg_pid = INT_MIN, },
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{ .n = "sdmmc1_gclk", .id = 32, .chg_pid = INT_MIN, },
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{ .n = "tcb0_gclk", .id = 35, .chg_pid = INT_MIN, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "tcb1_gclk", .id = 36, .chg_pid = INT_MIN, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "pwm_gclk", .id = 38, .chg_pid = INT_MIN, .r = { .min = 0, .max = 83000000 }, },
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{ .n = "isc_gclk", .id = 46, .chg_pid = INT_MIN, },
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{ .n = "pdmic_gclk", .id = 48, .chg_pid = INT_MIN, },
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{ .n = "i2s0_gclk", .id = 54, .chg_pid = 5, },
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{ .n = "i2s1_gclk", .id = 55, .chg_pid = 5, },
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{ .n = "can0_gclk", .id = 56, .chg_pid = INT_MIN, .r = { .min = 0, .max = 80000000 }, },
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{ .n = "can1_gclk", .id = 57, .chg_pid = INT_MIN, .r = { .min = 0, .max = 80000000 }, },
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{ .n = "classd_gclk", .id = 59, .chg_pid = 5, .r = { .min = 0, .max = 100000000 }, },
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};
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static const struct clk_programmable_layout sama5d2_programmable_layout = {
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.pres_mask = 0xff,
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.pres_shift = 4,
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.css_mask = 0x7,
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.have_slck_mck = 0,
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.is_pres_direct = 1,
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};
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static void __init sama5d2_pmc_setup(struct device_node *np)
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{
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struct clk_range range = CLK_RANGE(0, 0);
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const char *slck_name, *mainxtal_name;
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struct pmc_data *sama5d2_pmc;
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const char *parent_names[6];
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struct regmap *regmap, *regmap_sfr;
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struct clk_hw *hw;
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int i;
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bool bypass;
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i = of_property_match_string(np, "clock-names", "slow_clk");
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if (i < 0)
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return;
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slck_name = of_clk_get_parent_name(np, i);
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i = of_property_match_string(np, "clock-names", "main_xtal");
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if (i < 0)
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return;
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mainxtal_name = of_clk_get_parent_name(np, i);
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regmap = device_node_to_regmap(np);
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if (IS_ERR(regmap))
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return;
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sama5d2_pmc = pmc_data_allocate(PMC_AUDIOPINCK + 1,
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nck(sama5d2_systemck),
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nck(sama5d2_periph32ck),
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nck(sama5d2_gck), 3);
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if (!sama5d2_pmc)
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return;
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hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
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100000000);
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if (IS_ERR(hw))
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goto err_free;
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bypass = of_property_read_bool(np, "atmel,osc-bypass");
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hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
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bypass);
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if (IS_ERR(hw))
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goto err_free;
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parent_names[0] = "main_rc_osc";
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parent_names[1] = "main_osc";
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hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
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if (IS_ERR(hw))
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goto err_free;
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sama5d2_pmc->chws[PMC_MAIN] = hw;
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hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
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&sama5d3_pll_layout, &plla_characteristics);
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if (IS_ERR(hw))
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goto err_free;
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hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
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if (IS_ERR(hw))
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goto err_free;
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sama5d2_pmc->chws[PMC_PLLACK] = hw;
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hw = at91_clk_register_audio_pll_frac(regmap, "audiopll_fracck",
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"mainck");
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if (IS_ERR(hw))
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goto err_free;
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hw = at91_clk_register_audio_pll_pad(regmap, "audiopll_padck",
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"audiopll_fracck");
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if (IS_ERR(hw))
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goto err_free;
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sama5d2_pmc->chws[PMC_AUDIOPINCK] = hw;
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hw = at91_clk_register_audio_pll_pmc(regmap, "audiopll_pmcck",
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"audiopll_fracck");
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if (IS_ERR(hw))
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goto err_free;
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sama5d2_pmc->chws[PMC_AUDIOPLLCK] = hw;
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regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
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if (IS_ERR(regmap_sfr))
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regmap_sfr = NULL;
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hw = at91_clk_register_utmi(regmap, regmap_sfr, "utmick", "mainck");
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if (IS_ERR(hw))
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goto err_free;
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sama5d2_pmc->chws[PMC_UTMI] = hw;
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parent_names[0] = slck_name;
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parent_names[1] = "mainck";
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parent_names[2] = "plladivck";
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parent_names[3] = "utmick";
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hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
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parent_names,
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&at91sam9x5_master_layout,
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&mck_characteristics, &mck_lock);
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if (IS_ERR(hw))
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goto err_free;
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hw = at91_clk_register_master_div(regmap, "masterck_div",
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"masterck_pres",
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&at91sam9x5_master_layout,
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&mck_characteristics, &mck_lock,
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CLK_SET_RATE_GATE, 0);
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if (IS_ERR(hw))
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goto err_free;
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sama5d2_pmc->chws[PMC_MCK] = hw;
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hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck_div");
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if (IS_ERR(hw))
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goto err_free;
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sama5d2_pmc->chws[PMC_MCK2] = hw;
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parent_names[0] = "plladivck";
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parent_names[1] = "utmick";
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hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
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if (IS_ERR(hw))
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goto err_free;
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|
|
||
|
|
parent_names[0] = slck_name;
|
||
|
|
parent_names[1] = "mainck";
|
||
|
|
parent_names[2] = "plladivck";
|
||
|
|
parent_names[3] = "utmick";
|
||
|
|
parent_names[4] = "masterck_div";
|
||
|
|
parent_names[5] = "audiopll_pmcck";
|
||
|
|
for (i = 0; i < 3; i++) {
|
||
|
|
char name[6];
|
||
|
|
|
||
|
|
snprintf(name, sizeof(name), "prog%d", i);
|
||
|
|
|
||
|
|
hw = at91_clk_register_programmable(regmap, name,
|
||
|
|
parent_names, 6, i,
|
||
|
|
&sama5d2_programmable_layout,
|
||
|
|
NULL);
|
||
|
|
if (IS_ERR(hw))
|
||
|
|
goto err_free;
|
||
|
|
|
||
|
|
sama5d2_pmc->pchws[i] = hw;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(sama5d2_systemck); i++) {
|
||
|
|
hw = at91_clk_register_system(regmap, sama5d2_systemck[i].n,
|
||
|
|
sama5d2_systemck[i].p,
|
||
|
|
sama5d2_systemck[i].id,
|
||
|
|
sama5d2_systemck[i].flags);
|
||
|
|
if (IS_ERR(hw))
|
||
|
|
goto err_free;
|
||
|
|
|
||
|
|
sama5d2_pmc->shws[sama5d2_systemck[i].id] = hw;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(sama5d2_periphck); i++) {
|
||
|
|
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
|
||
|
|
&sama5d2_pcr_layout,
|
||
|
|
sama5d2_periphck[i].n,
|
||
|
|
"masterck_div",
|
||
|
|
sama5d2_periphck[i].id,
|
||
|
|
&range, INT_MIN,
|
||
|
|
sama5d2_periphck[i].flags);
|
||
|
|
if (IS_ERR(hw))
|
||
|
|
goto err_free;
|
||
|
|
|
||
|
|
sama5d2_pmc->phws[sama5d2_periphck[i].id] = hw;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(sama5d2_periph32ck); i++) {
|
||
|
|
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
|
||
|
|
&sama5d2_pcr_layout,
|
||
|
|
sama5d2_periph32ck[i].n,
|
||
|
|
"h32mxck",
|
||
|
|
sama5d2_periph32ck[i].id,
|
||
|
|
&sama5d2_periph32ck[i].r,
|
||
|
|
INT_MIN, 0);
|
||
|
|
if (IS_ERR(hw))
|
||
|
|
goto err_free;
|
||
|
|
|
||
|
|
sama5d2_pmc->phws[sama5d2_periph32ck[i].id] = hw;
|
||
|
|
}
|
||
|
|
|
||
|
|
parent_names[0] = slck_name;
|
||
|
|
parent_names[1] = "mainck";
|
||
|
|
parent_names[2] = "plladivck";
|
||
|
|
parent_names[3] = "utmick";
|
||
|
|
parent_names[4] = "masterck_div";
|
||
|
|
parent_names[5] = "audiopll_pmcck";
|
||
|
|
for (i = 0; i < ARRAY_SIZE(sama5d2_gck); i++) {
|
||
|
|
hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
|
||
|
|
&sama5d2_pcr_layout,
|
||
|
|
sama5d2_gck[i].n,
|
||
|
|
parent_names, NULL, 6,
|
||
|
|
sama5d2_gck[i].id,
|
||
|
|
&sama5d2_gck[i].r,
|
||
|
|
sama5d2_gck[i].chg_pid);
|
||
|
|
if (IS_ERR(hw))
|
||
|
|
goto err_free;
|
||
|
|
|
||
|
|
sama5d2_pmc->ghws[sama5d2_gck[i].id] = hw;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (regmap_sfr) {
|
||
|
|
parent_names[0] = "i2s0_clk";
|
||
|
|
parent_names[1] = "i2s0_gclk";
|
||
|
|
hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s0_muxclk",
|
||
|
|
parent_names, 2, 0);
|
||
|
|
if (IS_ERR(hw))
|
||
|
|
goto err_free;
|
||
|
|
|
||
|
|
sama5d2_pmc->chws[PMC_I2S0_MUX] = hw;
|
||
|
|
|
||
|
|
parent_names[0] = "i2s1_clk";
|
||
|
|
parent_names[1] = "i2s1_gclk";
|
||
|
|
hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s1_muxclk",
|
||
|
|
parent_names, 2, 1);
|
||
|
|
if (IS_ERR(hw))
|
||
|
|
goto err_free;
|
||
|
|
|
||
|
|
sama5d2_pmc->chws[PMC_I2S1_MUX] = hw;
|
||
|
|
}
|
||
|
|
|
||
|
|
of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sama5d2_pmc);
|
||
|
|
|
||
|
|
return;
|
||
|
|
|
||
|
|
err_free:
|
||
|
|
kfree(sama5d2_pmc);
|
||
|
|
}
|
||
|
|
|
||
|
|
CLK_OF_DECLARE(sama5d2_pmc, "atmel,sama5d2-pmc", sama5d2_pmc_setup);
|