279 lines
6.1 KiB
C
279 lines
6.1 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Marvell Orion SoC clocks
|
||
|
|
*
|
||
|
|
* Copyright (C) 2014 Thomas Petazzoni
|
||
|
|
*
|
||
|
|
* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/clk-provider.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
#include "common.h"
|
||
|
|
|
||
|
|
static const struct coreclk_ratio orion_coreclk_ratios[] __initconst = {
|
||
|
|
{ .id = 0, .name = "ddrclk", }
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Orion 5181
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define SAR_MV88F5181_TCLK_FREQ 8
|
||
|
|
#define SAR_MV88F5181_TCLK_FREQ_MASK 0x3
|
||
|
|
|
||
|
|
static u32 __init mv88f5181_get_tclk_freq(void __iomem *sar)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F5181_TCLK_FREQ) &
|
||
|
|
SAR_MV88F5181_TCLK_FREQ_MASK;
|
||
|
|
if (opt == 0)
|
||
|
|
return 133333333;
|
||
|
|
else if (opt == 1)
|
||
|
|
return 150000000;
|
||
|
|
else if (opt == 2)
|
||
|
|
return 166666667;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define SAR_MV88F5181_CPU_FREQ 4
|
||
|
|
#define SAR_MV88F5181_CPU_FREQ_MASK 0xf
|
||
|
|
|
||
|
|
static u32 __init mv88f5181_get_cpu_freq(void __iomem *sar)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F5181_CPU_FREQ) &
|
||
|
|
SAR_MV88F5181_CPU_FREQ_MASK;
|
||
|
|
if (opt == 0)
|
||
|
|
return 333333333;
|
||
|
|
else if (opt == 1 || opt == 2)
|
||
|
|
return 400000000;
|
||
|
|
else if (opt == 3)
|
||
|
|
return 500000000;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __init mv88f5181_get_clk_ratio(void __iomem *sar, int id,
|
||
|
|
int *mult, int *div)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F5181_CPU_FREQ) &
|
||
|
|
SAR_MV88F5181_CPU_FREQ_MASK;
|
||
|
|
if (opt == 0 || opt == 1) {
|
||
|
|
*mult = 1;
|
||
|
|
*div = 2;
|
||
|
|
} else if (opt == 2 || opt == 3) {
|
||
|
|
*mult = 1;
|
||
|
|
*div = 3;
|
||
|
|
} else {
|
||
|
|
*mult = 0;
|
||
|
|
*div = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct coreclk_soc_desc mv88f5181_coreclks = {
|
||
|
|
.get_tclk_freq = mv88f5181_get_tclk_freq,
|
||
|
|
.get_cpu_freq = mv88f5181_get_cpu_freq,
|
||
|
|
.get_clk_ratio = mv88f5181_get_clk_ratio,
|
||
|
|
.ratios = orion_coreclk_ratios,
|
||
|
|
.num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
|
||
|
|
};
|
||
|
|
|
||
|
|
static void __init mv88f5181_clk_init(struct device_node *np)
|
||
|
|
{
|
||
|
|
return mvebu_coreclk_setup(np, &mv88f5181_coreclks);
|
||
|
|
}
|
||
|
|
|
||
|
|
CLK_OF_DECLARE(mv88f5181_clk, "marvell,mv88f5181-core-clock", mv88f5181_clk_init);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Orion 5182
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define SAR_MV88F5182_TCLK_FREQ 8
|
||
|
|
#define SAR_MV88F5182_TCLK_FREQ_MASK 0x3
|
||
|
|
|
||
|
|
static u32 __init mv88f5182_get_tclk_freq(void __iomem *sar)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F5182_TCLK_FREQ) &
|
||
|
|
SAR_MV88F5182_TCLK_FREQ_MASK;
|
||
|
|
if (opt == 1)
|
||
|
|
return 150000000;
|
||
|
|
else if (opt == 2)
|
||
|
|
return 166666667;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define SAR_MV88F5182_CPU_FREQ 4
|
||
|
|
#define SAR_MV88F5182_CPU_FREQ_MASK 0xf
|
||
|
|
|
||
|
|
static u32 __init mv88f5182_get_cpu_freq(void __iomem *sar)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F5182_CPU_FREQ) &
|
||
|
|
SAR_MV88F5182_CPU_FREQ_MASK;
|
||
|
|
if (opt == 0)
|
||
|
|
return 333333333;
|
||
|
|
else if (opt == 1 || opt == 2)
|
||
|
|
return 400000000;
|
||
|
|
else if (opt == 3)
|
||
|
|
return 500000000;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __init mv88f5182_get_clk_ratio(void __iomem *sar, int id,
|
||
|
|
int *mult, int *div)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F5182_CPU_FREQ) &
|
||
|
|
SAR_MV88F5182_CPU_FREQ_MASK;
|
||
|
|
if (opt == 0 || opt == 1) {
|
||
|
|
*mult = 1;
|
||
|
|
*div = 2;
|
||
|
|
} else if (opt == 2 || opt == 3) {
|
||
|
|
*mult = 1;
|
||
|
|
*div = 3;
|
||
|
|
} else {
|
||
|
|
*mult = 0;
|
||
|
|
*div = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct coreclk_soc_desc mv88f5182_coreclks = {
|
||
|
|
.get_tclk_freq = mv88f5182_get_tclk_freq,
|
||
|
|
.get_cpu_freq = mv88f5182_get_cpu_freq,
|
||
|
|
.get_clk_ratio = mv88f5182_get_clk_ratio,
|
||
|
|
.ratios = orion_coreclk_ratios,
|
||
|
|
.num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
|
||
|
|
};
|
||
|
|
|
||
|
|
static void __init mv88f5182_clk_init(struct device_node *np)
|
||
|
|
{
|
||
|
|
return mvebu_coreclk_setup(np, &mv88f5182_coreclks);
|
||
|
|
}
|
||
|
|
|
||
|
|
CLK_OF_DECLARE(mv88f5182_clk, "marvell,mv88f5182-core-clock", mv88f5182_clk_init);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Orion 5281
|
||
|
|
*/
|
||
|
|
|
||
|
|
static u32 __init mv88f5281_get_tclk_freq(void __iomem *sar)
|
||
|
|
{
|
||
|
|
/* On 5281, tclk is always 166 Mhz */
|
||
|
|
return 166666667;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define SAR_MV88F5281_CPU_FREQ 4
|
||
|
|
#define SAR_MV88F5281_CPU_FREQ_MASK 0xf
|
||
|
|
|
||
|
|
static u32 __init mv88f5281_get_cpu_freq(void __iomem *sar)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F5281_CPU_FREQ) &
|
||
|
|
SAR_MV88F5281_CPU_FREQ_MASK;
|
||
|
|
if (opt == 1 || opt == 2)
|
||
|
|
return 400000000;
|
||
|
|
else if (opt == 3)
|
||
|
|
return 500000000;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __init mv88f5281_get_clk_ratio(void __iomem *sar, int id,
|
||
|
|
int *mult, int *div)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F5281_CPU_FREQ) &
|
||
|
|
SAR_MV88F5281_CPU_FREQ_MASK;
|
||
|
|
if (opt == 1) {
|
||
|
|
*mult = 1;
|
||
|
|
*div = 2;
|
||
|
|
} else if (opt == 2 || opt == 3) {
|
||
|
|
*mult = 1;
|
||
|
|
*div = 3;
|
||
|
|
} else {
|
||
|
|
*mult = 0;
|
||
|
|
*div = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct coreclk_soc_desc mv88f5281_coreclks = {
|
||
|
|
.get_tclk_freq = mv88f5281_get_tclk_freq,
|
||
|
|
.get_cpu_freq = mv88f5281_get_cpu_freq,
|
||
|
|
.get_clk_ratio = mv88f5281_get_clk_ratio,
|
||
|
|
.ratios = orion_coreclk_ratios,
|
||
|
|
.num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
|
||
|
|
};
|
||
|
|
|
||
|
|
static void __init mv88f5281_clk_init(struct device_node *np)
|
||
|
|
{
|
||
|
|
return mvebu_coreclk_setup(np, &mv88f5281_coreclks);
|
||
|
|
}
|
||
|
|
|
||
|
|
CLK_OF_DECLARE(mv88f5281_clk, "marvell,mv88f5281-core-clock", mv88f5281_clk_init);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Orion 6183
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define SAR_MV88F6183_TCLK_FREQ 9
|
||
|
|
#define SAR_MV88F6183_TCLK_FREQ_MASK 0x1
|
||
|
|
|
||
|
|
static u32 __init mv88f6183_get_tclk_freq(void __iomem *sar)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F6183_TCLK_FREQ) &
|
||
|
|
SAR_MV88F6183_TCLK_FREQ_MASK;
|
||
|
|
if (opt == 0)
|
||
|
|
return 133333333;
|
||
|
|
else if (opt == 1)
|
||
|
|
return 166666667;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define SAR_MV88F6183_CPU_FREQ 1
|
||
|
|
#define SAR_MV88F6183_CPU_FREQ_MASK 0x3f
|
||
|
|
|
||
|
|
static u32 __init mv88f6183_get_cpu_freq(void __iomem *sar)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F6183_CPU_FREQ) &
|
||
|
|
SAR_MV88F6183_CPU_FREQ_MASK;
|
||
|
|
if (opt == 9)
|
||
|
|
return 333333333;
|
||
|
|
else if (opt == 17)
|
||
|
|
return 400000000;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __init mv88f6183_get_clk_ratio(void __iomem *sar, int id,
|
||
|
|
int *mult, int *div)
|
||
|
|
{
|
||
|
|
u32 opt = (readl(sar) >> SAR_MV88F6183_CPU_FREQ) &
|
||
|
|
SAR_MV88F6183_CPU_FREQ_MASK;
|
||
|
|
if (opt == 9 || opt == 17) {
|
||
|
|
*mult = 1;
|
||
|
|
*div = 2;
|
||
|
|
} else {
|
||
|
|
*mult = 0;
|
||
|
|
*div = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct coreclk_soc_desc mv88f6183_coreclks = {
|
||
|
|
.get_tclk_freq = mv88f6183_get_tclk_freq,
|
||
|
|
.get_cpu_freq = mv88f6183_get_cpu_freq,
|
||
|
|
.get_clk_ratio = mv88f6183_get_clk_ratio,
|
||
|
|
.ratios = orion_coreclk_ratios,
|
||
|
|
.num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
static void __init mv88f6183_clk_init(struct device_node *np)
|
||
|
|
{
|
||
|
|
return mvebu_coreclk_setup(np, &mv88f6183_coreclks);
|
||
|
|
}
|
||
|
|
|
||
|
|
CLK_OF_DECLARE(mv88f6183_clk, "marvell,mv88f6183-core-clock", mv88f6183_clk_init);
|