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Commit 594b3cae authored by Arnd Bergmann's avatar Arnd Bergmann
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clk: remove s3c24xx driver 

The s3c24xx platform is gone, so the clk driver can be removed as
well.
Acked-by: default avatarStephen Boyd <sboyd@kernel.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 0b145589
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MAINTAINERS
View file @ 594b3cae
...@@ -18440,7 +18440,6 @@ F: include/dt-bindings/clock/s3c*.h ...@@ -18440,7 +18440,6 @@ F: include/dt-bindings/clock/s3c*.h
F: include/dt-bindings/clock/s5p*.h F: include/dt-bindings/clock/s5p*.h
F: include/dt-bindings/clock/samsung,*.h F: include/dt-bindings/clock/samsung,*.h
F: include/linux/clk/samsung.h F: include/linux/clk/samsung.h
F: include/linux/platform_data/clk-s3c2410.h
SAMSUNG SPI DRIVERS SAMSUNG SPI DRIVERS
M: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> M: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
......
drivers/clk/samsung/Kconfig
View file @ 594b3cae
...@@ -94,38 +94,6 @@ config EXYNOS_CLKOUT ...@@ -94,38 +94,6 @@ config EXYNOS_CLKOUT
status of the certains clocks from SoC, but it could also be tied to status of the certains clocks from SoC, but it could also be tied to
other devices as an input clock. other devices as an input clock.
# For S3C24XX platforms, select following symbols:
config S3C2410_COMMON_CLK
bool "Samsung S3C2410 clock controller support" if COMPILE_TEST
select COMMON_CLK_SAMSUNG
help
Support for the clock controller present on the Samsung
S3C2410/S3C2440/S3C2442 SoCs. Choose Y here only if you build for
this SoC.
config S3C2410_COMMON_DCLK
bool
select COMMON_CLK_SAMSUNG
select REGMAP_MMIO
help
Support for the dclk clock controller present on the Samsung
S3C2410/S3C2412/S3C2440/S3C2443 SoCs. Choose Y here only if you build
for this SoC.
config S3C2412_COMMON_CLK
bool "Samsung S3C2412 clock controller support" if COMPILE_TEST
select COMMON_CLK_SAMSUNG
help
Support for the clock controller present on the Samsung S3C2412 SoCs.
Choose Y here only if you build for this SoC.
config S3C2443_COMMON_CLK
bool "Samsung S3C2443 clock controller support" if COMPILE_TEST
select COMMON_CLK_SAMSUNG
help
Support for the clock controller present on the Samsung
S3C2416/S3C2443 SoCs. Choose Y here only if you build for this SoC.
config TESLA_FSD_COMMON_CLK config TESLA_FSD_COMMON_CLK
bool "Tesla FSD clock controller support" if COMPILE_TEST bool "Tesla FSD clock controller support" if COMPILE_TEST
depends on COMMON_CLK_SAMSUNG depends on COMMON_CLK_SAMSUNG
......
drivers/clk/samsung/Makefile
View file @ 594b3cae
...@@ -21,10 +21,6 @@ obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7.o ...@@ -21,10 +21,6 @@ obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7.o
obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7885.o obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7885.o
obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos850.o obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos850.o
obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynosautov9.o obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynosautov9.o
obj-$(CONFIG_S3C2410_COMMON_CLK)+= clk-s3c2410.o
obj-$(CONFIG_S3C2410_COMMON_DCLK)+= clk-s3c2410-dclk.o
obj-$(CONFIG_S3C2412_COMMON_CLK)+= clk-s3c2412.o
obj-$(CONFIG_S3C2443_COMMON_CLK)+= clk-s3c2443.o
obj-$(CONFIG_S3C64XX_COMMON_CLK) += clk-s3c64xx.o obj-$(CONFIG_S3C64XX_COMMON_CLK) += clk-s3c64xx.o
obj-$(CONFIG_S5PV210_COMMON_CLK) += clk-s5pv210.o clk-s5pv210-audss.o obj-$(CONFIG_S5PV210_COMMON_CLK) += clk-s5pv210.o clk-s5pv210-audss.o
obj-$(CONFIG_TESLA_FSD_COMMON_CLK) += clk-fsd.o obj-$(CONFIG_TESLA_FSD_COMMON_CLK) += clk-fsd.o
drivers/clk/samsung/clk-s3c2410-dclk.c deleted 100644 → 0
View file @ 0b145589
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
*
* Common Clock Framework support for s3c24xx external clock output.
*/
#include <linux/clkdev.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/platform_data/clk-s3c2410.h>
#include <linux/module.h>
#include "clk.h"
#define MUX_DCLK0 0
#define MUX_DCLK1 1
#define DIV_DCLK0 2
#define DIV_DCLK1 3
#define GATE_DCLK0 4
#define GATE_DCLK1 5
#define MUX_CLKOUT0 6
#define MUX_CLKOUT1 7
#define DCLK_MAX_CLKS (MUX_CLKOUT1 + 1)
enum supported_socs {
S3C2410,
S3C2412,
S3C2440,
S3C2443,
};
struct s3c24xx_dclk_drv_data {
const char **clkout0_parent_names;
int clkout0_num_parents;
const char **clkout1_parent_names;
int clkout1_num_parents;
const char **mux_parent_names;
int mux_num_parents;
};
/*
* Clock for output-parent selection in misccr
*/
struct s3c24xx_clkout {
struct clk_hw hw;
u32 mask;
u8 shift;
unsigned int (*modify_misccr)(unsigned int clr, unsigned int chg);
};
#define to_s3c24xx_clkout(_hw) container_of(_hw, struct s3c24xx_clkout, hw)
static u8 s3c24xx_clkout_get_parent(struct clk_hw *hw)
{
struct s3c24xx_clkout *clkout = to_s3c24xx_clkout(hw);
int num_parents = clk_hw_get_num_parents(hw);
u32 val;
val = clkout->modify_misccr(0, 0) >> clkout->shift;
val >>= clkout->shift;
val &= clkout->mask;
if (val >= num_parents)
return -EINVAL;
return val;
}
static int s3c24xx_clkout_set_parent(struct clk_hw *hw, u8 index)
{
struct s3c24xx_clkout *clkout = to_s3c24xx_clkout(hw);
clkout->modify_misccr((clkout->mask << clkout->shift),
(index << clkout->shift));
return 0;
}
static const struct clk_ops s3c24xx_clkout_ops = {
.get_parent = s3c24xx_clkout_get_parent,
.set_parent = s3c24xx_clkout_set_parent,
.determine_rate = __clk_mux_determine_rate,
};
static struct clk_hw *s3c24xx_register_clkout(struct device *dev,
const char *name, const char **parent_names, u8 num_parents,
u8 shift, u32 mask)
{
struct s3c2410_clk_platform_data *pdata = dev_get_platdata(dev);
struct s3c24xx_clkout *clkout;
struct clk_init_data init;
int ret;
if (!pdata)
return ERR_PTR(-EINVAL);
/* allocate the clkout */
clkout = kzalloc(sizeof(*clkout), GFP_KERNEL);
if (!clkout)
return ERR_PTR(-ENOMEM);
init.name = name;
init.ops = &s3c24xx_clkout_ops;
init.flags = 0;
init.parent_names = parent_names;
init.num_parents = num_parents;
clkout->shift = shift;
clkout->mask = mask;
clkout->hw.init = &init;
clkout->modify_misccr = pdata->modify_misccr;
ret = clk_hw_register(dev, &clkout->hw);
if (ret)
return ERR_PTR(ret);
return &clkout->hw;
}
/*
* dclk and clkout init
*/
struct s3c24xx_dclk {
struct device *dev;
void __iomem *base;
struct notifier_block dclk0_div_change_nb;
struct notifier_block dclk1_div_change_nb;
spinlock_t dclk_lock;
unsigned long reg_save;
/* clk_data must be the last entry in the structure */
struct clk_hw_onecell_data clk_data;
};
#define to_s3c24xx_dclk0(x) \
container_of(x, struct s3c24xx_dclk, dclk0_div_change_nb)
#define to_s3c24xx_dclk1(x) \
container_of(x, struct s3c24xx_dclk, dclk1_div_change_nb)
static const char *dclk_s3c2410_p[] = { "pclk", "uclk" };
static const char *clkout0_s3c2410_p[] = { "mpll", "upll", "fclk", "hclk", "pclk",
"gate_dclk0" };
static const char *clkout1_s3c2410_p[] = { "mpll", "upll", "fclk", "hclk", "pclk",
"gate_dclk1" };
static const char *clkout0_s3c2412_p[] = { "mpll", "upll", "rtc_clkout",
"hclk", "pclk", "gate_dclk0" };
static const char *clkout1_s3c2412_p[] = { "xti", "upll", "fclk", "hclk", "pclk",
"gate_dclk1" };
static const char *clkout0_s3c2440_p[] = { "xti", "upll", "fclk", "hclk", "pclk",
"gate_dclk0" };
static const char *clkout1_s3c2440_p[] = { "mpll", "upll", "rtc_clkout",
"hclk", "pclk", "gate_dclk1" };
static const char *dclk_s3c2443_p[] = { "pclk", "epll" };
static const char *clkout0_s3c2443_p[] = { "xti", "epll", "armclk", "hclk", "pclk",
"gate_dclk0" };
static const char *clkout1_s3c2443_p[] = { "dummy", "epll", "rtc_clkout",
"hclk", "pclk", "gate_dclk1" };
#define DCLKCON_DCLK_DIV_MASK 0xf
#define DCLKCON_DCLK0_DIV_SHIFT 4
#define DCLKCON_DCLK0_CMP_SHIFT 8
#define DCLKCON_DCLK1_DIV_SHIFT 20
#define DCLKCON_DCLK1_CMP_SHIFT 24
static void s3c24xx_dclk_update_cmp(struct s3c24xx_dclk *s3c24xx_dclk,
int div_shift, int cmp_shift)
{
unsigned long flags = 0;
u32 dclk_con, div, cmp;
spin_lock_irqsave(&s3c24xx_dclk->dclk_lock, flags);
dclk_con = readl_relaxed(s3c24xx_dclk->base);
div = ((dclk_con >> div_shift) & DCLKCON_DCLK_DIV_MASK) + 1;
cmp = ((div + 1) / 2) - 1;
dclk_con &= ~(DCLKCON_DCLK_DIV_MASK << cmp_shift);
dclk_con |= (cmp << cmp_shift);
writel_relaxed(dclk_con, s3c24xx_dclk->base);
spin_unlock_irqrestore(&s3c24xx_dclk->dclk_lock, flags);
}
static int s3c24xx_dclk0_div_notify(struct notifier_block *nb,
unsigned long event, void *data)
{
struct s3c24xx_dclk *s3c24xx_dclk = to_s3c24xx_dclk0(nb);
if (event == POST_RATE_CHANGE) {
s3c24xx_dclk_update_cmp(s3c24xx_dclk,
DCLKCON_DCLK0_DIV_SHIFT, DCLKCON_DCLK0_CMP_SHIFT);
}
return NOTIFY_DONE;
}
static int s3c24xx_dclk1_div_notify(struct notifier_block *nb,
unsigned long event, void *data)
{
struct s3c24xx_dclk *s3c24xx_dclk = to_s3c24xx_dclk1(nb);
if (event == POST_RATE_CHANGE) {
s3c24xx_dclk_update_cmp(s3c24xx_dclk,
DCLKCON_DCLK1_DIV_SHIFT, DCLKCON_DCLK1_CMP_SHIFT);
}
return NOTIFY_DONE;
}
#ifdef CONFIG_PM_SLEEP
static int s3c24xx_dclk_suspend(struct device *dev)
{
struct s3c24xx_dclk *s3c24xx_dclk = dev_get_drvdata(dev);
s3c24xx_dclk->reg_save = readl_relaxed(s3c24xx_dclk->base);
return 0;
}
static int s3c24xx_dclk_resume(struct device *dev)
{
struct s3c24xx_dclk *s3c24xx_dclk = dev_get_drvdata(dev);
writel_relaxed(s3c24xx_dclk->reg_save, s3c24xx_dclk->base);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(s3c24xx_dclk_pm_ops,
s3c24xx_dclk_suspend, s3c24xx_dclk_resume);
static int s3c24xx_dclk_probe(struct platform_device *pdev)
{
struct s3c24xx_dclk *s3c24xx_dclk;
struct s3c24xx_dclk_drv_data *dclk_variant;
struct clk_hw **clk_table;
int ret, i;
s3c24xx_dclk = devm_kzalloc(&pdev->dev,
struct_size(s3c24xx_dclk, clk_data.hws,
DCLK_MAX_CLKS),
GFP_KERNEL);
if (!s3c24xx_dclk)
return -ENOMEM;
clk_table = s3c24xx_dclk->clk_data.hws;
s3c24xx_dclk->dev = &pdev->dev;
s3c24xx_dclk->clk_data.num = DCLK_MAX_CLKS;
platform_set_drvdata(pdev, s3c24xx_dclk);
spin_lock_init(&s3c24xx_dclk->dclk_lock);
s3c24xx_dclk->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(s3c24xx_dclk->base))
return PTR_ERR(s3c24xx_dclk->base);
dclk_variant = (struct s3c24xx_dclk_drv_data *)
platform_get_device_id(pdev)->driver_data;
clk_table[MUX_DCLK0] = clk_hw_register_mux(&pdev->dev, "mux_dclk0",
dclk_variant->mux_parent_names,
dclk_variant->mux_num_parents, 0,
s3c24xx_dclk->base, 1, 1, 0,
&s3c24xx_dclk->dclk_lock);
clk_table[MUX_DCLK1] = clk_hw_register_mux(&pdev->dev, "mux_dclk1",
dclk_variant->mux_parent_names,
dclk_variant->mux_num_parents, 0,
s3c24xx_dclk->base, 17, 1, 0,
&s3c24xx_dclk->dclk_lock);
clk_table[DIV_DCLK0] = clk_hw_register_divider(&pdev->dev, "div_dclk0",
"mux_dclk0", 0, s3c24xx_dclk->base,
4, 4, 0, &s3c24xx_dclk->dclk_lock);
clk_table[DIV_DCLK1] = clk_hw_register_divider(&pdev->dev, "div_dclk1",
"mux_dclk1", 0, s3c24xx_dclk->base,
20, 4, 0, &s3c24xx_dclk->dclk_lock);
clk_table[GATE_DCLK0] = clk_hw_register_gate(&pdev->dev, "gate_dclk0",
"div_dclk0", CLK_SET_RATE_PARENT,
s3c24xx_dclk->base, 0, 0,
&s3c24xx_dclk->dclk_lock);
clk_table[GATE_DCLK1] = clk_hw_register_gate(&pdev->dev, "gate_dclk1",
"div_dclk1", CLK_SET_RATE_PARENT,
s3c24xx_dclk->base, 16, 0,
&s3c24xx_dclk->dclk_lock);
clk_table[MUX_CLKOUT0] = s3c24xx_register_clkout(&pdev->dev,
"clkout0", dclk_variant->clkout0_parent_names,
dclk_variant->clkout0_num_parents, 4, 7);
clk_table[MUX_CLKOUT1] = s3c24xx_register_clkout(&pdev->dev,
"clkout1", dclk_variant->clkout1_parent_names,
dclk_variant->clkout1_num_parents, 8, 7);
for (i = 0; i < DCLK_MAX_CLKS; i++)
if (IS_ERR(clk_table[i])) {
dev_err(&pdev->dev, "clock %d failed to register\n", i);
ret = PTR_ERR(clk_table[i]);
goto err_clk_register;
}
ret = clk_hw_register_clkdev(clk_table[MUX_DCLK0], "dclk0", NULL);
if (!ret)
ret = clk_hw_register_clkdev(clk_table[MUX_DCLK1], "dclk1",
NULL);
if (!ret)
ret = clk_hw_register_clkdev(clk_table[MUX_CLKOUT0],
"clkout0", NULL);
if (!ret)
ret = clk_hw_register_clkdev(clk_table[MUX_CLKOUT1],
"clkout1", NULL);
if (ret) {
dev_err(&pdev->dev, "failed to register aliases, %d\n", ret);
goto err_clk_register;
}
s3c24xx_dclk->dclk0_div_change_nb.notifier_call =
s3c24xx_dclk0_div_notify;
s3c24xx_dclk->dclk1_div_change_nb.notifier_call =
s3c24xx_dclk1_div_notify;
ret = clk_notifier_register(clk_table[DIV_DCLK0]->clk,
&s3c24xx_dclk->dclk0_div_change_nb);
if (ret)
goto err_clk_register;
ret = clk_notifier_register(clk_table[DIV_DCLK1]->clk,
&s3c24xx_dclk->dclk1_div_change_nb);
if (ret)
goto err_dclk_notify;
return 0;
err_dclk_notify:
clk_notifier_unregister(clk_table[DIV_DCLK0]->clk,
&s3c24xx_dclk->dclk0_div_change_nb);
err_clk_register:
for (i = 0; i < DCLK_MAX_CLKS; i++)
if (clk_table[i] && !IS_ERR(clk_table[i]))
clk_hw_unregister(clk_table[i]);
return ret;
}
static int s3c24xx_dclk_remove(struct platform_device *pdev)
{
struct s3c24xx_dclk *s3c24xx_dclk = platform_get_drvdata(pdev);
struct clk_hw **clk_table = s3c24xx_dclk->clk_data.hws;
int i;
clk_notifier_unregister(clk_table[DIV_DCLK1]->clk,
&s3c24xx_dclk->dclk1_div_change_nb);
clk_notifier_unregister(clk_table[DIV_DCLK0]->clk,
&s3c24xx_dclk->dclk0_div_change_nb);
for (i = 0; i < DCLK_MAX_CLKS; i++)
clk_hw_unregister(clk_table[i]);
return 0;
}
static struct s3c24xx_dclk_drv_data dclk_variants[] = {
[S3C2410] = {
.clkout0_parent_names = clkout0_s3c2410_p,
.clkout0_num_parents = ARRAY_SIZE(clkout0_s3c2410_p),
.clkout1_parent_names = clkout1_s3c2410_p,
.clkout1_num_parents = ARRAY_SIZE(clkout1_s3c2410_p),
.mux_parent_names = dclk_s3c2410_p,
.mux_num_parents = ARRAY_SIZE(dclk_s3c2410_p),
},
[S3C2412] = {
.clkout0_parent_names = clkout0_s3c2412_p,
.clkout0_num_parents = ARRAY_SIZE(clkout0_s3c2412_p),
.clkout1_parent_names = clkout1_s3c2412_p,
.clkout1_num_parents = ARRAY_SIZE(clkout1_s3c2412_p),
.mux_parent_names = dclk_s3c2410_p,
.mux_num_parents = ARRAY_SIZE(dclk_s3c2410_p),
},
[S3C2440] = {
.clkout0_parent_names = clkout0_s3c2440_p,
.clkout0_num_parents = ARRAY_SIZE(clkout0_s3c2440_p),
.clkout1_parent_names = clkout1_s3c2440_p,
.clkout1_num_parents = ARRAY_SIZE(clkout1_s3c2440_p),
.mux_parent_names = dclk_s3c2410_p,
.mux_num_parents = ARRAY_SIZE(dclk_s3c2410_p),
},
[S3C2443] = {
.clkout0_parent_names = clkout0_s3c2443_p,
.clkout0_num_parents = ARRAY_SIZE(clkout0_s3c2443_p),
.clkout1_parent_names = clkout1_s3c2443_p,
.clkout1_num_parents = ARRAY_SIZE(clkout1_s3c2443_p),
.mux_parent_names = dclk_s3c2443_p,
.mux_num_parents = ARRAY_SIZE(dclk_s3c2443_p),
},
};
static const struct platform_device_id s3c24xx_dclk_driver_ids[] = {
{
.name = "s3c2410-dclk",
.driver_data = (kernel_ulong_t)&dclk_variants[S3C2410],
}, {
.name = "s3c2412-dclk",
.driver_data = (kernel_ulong_t)&dclk_variants[S3C2412],
}, {
.name = "s3c2440-dclk",
.driver_data = (kernel_ulong_t)&dclk_variants[S3C2440],
}, {
.name = "s3c2443-dclk",
.driver_data = (kernel_ulong_t)&dclk_variants[S3C2443],
},
{ }
};
MODULE_DEVICE_TABLE(platform, s3c24xx_dclk_driver_ids);
static struct platform_driver s3c24xx_dclk_driver = {
.driver = {
.name = "s3c24xx-dclk",
.pm = &s3c24xx_dclk_pm_ops,
.suppress_bind_attrs = true,
},
.probe = s3c24xx_dclk_probe,
.remove = s3c24xx_dclk_remove,
.id_table = s3c24xx_dclk_driver_ids,
};
module_platform_driver(s3c24xx_dclk_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
MODULE_DESCRIPTION("Driver for the S3C24XX external clock outputs");
drivers/clk/samsung/clk-s3c2410.c deleted 100644 → 0
View file @ 0b145589
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
*
* Common Clock Framework support for S3C2410 and following SoCs.
*/
#include <linux/clk-provider.h>
#include <linux/clk/samsung.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <dt-bindings/clock/s3c2410.h>
#include "clk.h"
#include "clk-pll.h"
#define LOCKTIME 0x00
#define MPLLCON 0x04
#define UPLLCON 0x08
#define CLKCON 0x0c
#define CLKSLOW 0x10
#define CLKDIVN 0x14
#define CAMDIVN 0x18
/* the soc types */
enum supported_socs {
S3C2410,
S3C2440,
S3C2442,
};
/* list of PLLs to be registered */
enum s3c2410_plls {
mpll, upll,
};
static void __iomem *reg_base;
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
*/
static unsigned long s3c2410_clk_regs[] __initdata = {
LOCKTIME,
MPLLCON,
UPLLCON,
CLKCON,
CLKSLOW,
CLKDIVN,
CAMDIVN,
};
PNAME(fclk_p) = { "mpll", "div_slow" };
static struct samsung_mux_clock s3c2410_common_muxes[] __initdata = {
MUX(FCLK, "fclk", fclk_p, CLKSLOW, 4, 1),
};
static struct clk_div_table divslow_d[] = {
{ .val = 0, .div = 1 },
{ .val = 1, .div = 2 },
{ .val = 2, .div = 4 },
{ .val = 3, .div = 6 },
{ .val = 4, .div = 8 },
{ .val = 5, .div = 10 },
{ .val = 6, .div = 12 },
{ .val = 7, .div = 14 },
{ /* sentinel */ },
};
static struct samsung_div_clock s3c2410_common_dividers[] __initdata = {
DIV_T(0, "div_slow", "xti", CLKSLOW, 0, 3, divslow_d),
DIV(PCLK, "pclk", "hclk", CLKDIVN, 0, 1),
};
static struct samsung_gate_clock s3c2410_common_gates[] __initdata = {
GATE(PCLK_SPI, "spi", "pclk", CLKCON, 18, 0, 0),
GATE(PCLK_I2S, "i2s", "pclk", CLKCON, 17, 0, 0),
GATE(PCLK_I2C, "i2c", "pclk", CLKCON, 16, 0, 0),
GATE(PCLK_ADC, "adc", "pclk", CLKCON, 15, 0, 0),
GATE(PCLK_RTC, "rtc", "pclk", CLKCON, 14, 0, 0),
GATE(PCLK_GPIO, "gpio", "pclk", CLKCON, 13, CLK_IGNORE_UNUSED, 0),
GATE(PCLK_UART2, "uart2", "pclk", CLKCON, 12, 0, 0),
GATE(PCLK_UART1, "uart1", "pclk", CLKCON, 11, 0, 0),
GATE(PCLK_UART0, "uart0", "pclk", CLKCON, 10, 0, 0),
GATE(PCLK_SDI, "sdi", "pclk", CLKCON, 9, 0, 0),
GATE(PCLK_PWM, "pwm", "pclk", CLKCON, 8, 0, 0),
GATE(HCLK_USBD, "usb-device", "hclk", CLKCON, 7, 0, 0),
GATE(HCLK_USBH, "usb-host", "hclk", CLKCON, 6, 0, 0),
GATE(HCLK_LCD, "lcd", "hclk", CLKCON, 5, 0, 0),
GATE(HCLK_NAND, "nand", "hclk", CLKCON, 4, 0, 0),
};
/* should be added _after_ the soc-specific clocks are created */
static struct samsung_clock_alias s3c2410_common_aliases[] __initdata = {
ALIAS(PCLK_I2C, "s3c2410-i2c.0", "i2c"),
ALIAS(PCLK_ADC, NULL, "adc"),
ALIAS(PCLK_RTC, NULL, "rtc"),
ALIAS(PCLK_PWM, NULL, "timers"),
ALIAS(HCLK_LCD, NULL, "lcd"),
ALIAS(HCLK_USBD, NULL, "usb-device"),
ALIAS(HCLK_USBH, NULL, "usb-host"),
ALIAS(UCLK, NULL, "usb-bus-host"),
ALIAS(UCLK, NULL, "usb-bus-gadget"),
ALIAS(ARMCLK, NULL, "armclk"),
ALIAS(UCLK, NULL, "uclk"),
ALIAS(HCLK, NULL, "hclk"),
ALIAS(MPLL, NULL, "mpll"),
ALIAS(FCLK, NULL, "fclk"),
ALIAS(PCLK, NULL, "watchdog"),
ALIAS(PCLK_SDI, NULL, "sdi"),
ALIAS(HCLK_NAND, NULL, "nand"),
ALIAS(PCLK_I2S, NULL, "iis"),
ALIAS(PCLK_I2C, NULL, "i2c"),
};
/* S3C2410 specific clocks */
static struct samsung_pll_rate_table pll_s3c2410_12mhz_tbl[] __initdata = {
/* sorted in descending order */
/* 2410A extras */
PLL_S3C2410_MPLL_RATE(12 * MHZ, 270000000, 127, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 268000000, 126, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 266000000, 125, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 226000000, 105, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 210000000, 132, 2, 1),
/* 2410 common */
PLL_S3C2410_MPLL_RATE(12 * MHZ, 202800000, 161, 3, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 192000000, 88, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 186000000, 85, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 180000000, 82, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 170000000, 77, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 158000000, 71, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 152000000, 68, 1, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 147000000, 90, 2, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 135000000, 82, 2, 1),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 124000000, 116, 1, 2),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 118500000, 150, 2, 2),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 113000000, 105, 1, 2),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 101250000, 127, 2, 2),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 90000000, 112, 2, 2),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 84750000, 105, 2, 2),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 79000000, 71, 1, 2),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 67500000, 82, 2, 2),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 56250000, 142, 2, 3),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 48000000, 120, 2, 3),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 50700000, 161, 3, 3),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 45000000, 82, 1, 3),
PLL_S3C2410_MPLL_RATE(12 * MHZ, 33750000, 82, 2, 3),
{ /* sentinel */ },
};
static struct samsung_pll_clock s3c2410_plls[] __initdata = {
[mpll] = PLL(pll_s3c2410_mpll, MPLL, "mpll", "xti",
LOCKTIME, MPLLCON, NULL),
[upll] = PLL(pll_s3c2410_upll, UPLL, "upll", "xti",
LOCKTIME, UPLLCON, NULL),
};
static struct samsung_div_clock s3c2410_dividers[] __initdata = {
DIV(HCLK, "hclk", "mpll", CLKDIVN, 1, 1),
};
static struct samsung_fixed_factor_clock s3c2410_ffactor[] __initdata = {
/*
* armclk is directly supplied by the fclk, without
* switching possibility like on the s3c244x below.
*/
FFACTOR(ARMCLK, "armclk", "fclk", 1, 1, 0),
/* uclk is fed from the unmodified upll */
FFACTOR(UCLK, "uclk", "upll", 1, 1, 0),
};
static struct samsung_clock_alias s3c2410_aliases[] __initdata = {
ALIAS(PCLK_UART0, "s3c2410-uart.0", "uart"),
ALIAS(PCLK_UART1, "s3c2410-uart.1", "uart"),
ALIAS(PCLK_UART2, "s3c2410-uart.2", "uart"),
ALIAS(PCLK_UART0, "s3c2410-uart.0", "clk_uart_baud0"),
ALIAS(PCLK_UART1, "s3c2410-uart.1", "clk_uart_baud0"),
ALIAS(PCLK_UART2, "s3c2410-uart.2", "clk_uart_baud0"),
ALIAS(UCLK, NULL, "clk_uart_baud1"),
};
/* S3C244x specific clocks */
static struct samsung_pll_rate_table pll_s3c244x_12mhz_tbl[] __initdata = {
/* sorted in descending order */
PLL_S3C2440_MPLL_RATE(12 * MHZ, 400000000, 0x5c, 1, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 390000000, 0x7a, 2, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 380000000, 0x57, 1, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 370000000, 0xb1, 4, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 360000000, 0x70, 2, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 350000000, 0xa7, 4, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 340000000, 0x4d, 1, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 330000000, 0x66, 2, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 320000000, 0x98, 4, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 310000000, 0x93, 4, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 300000000, 0x75, 3, 1),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 240000000, 0x70, 1, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 230000000, 0x6b, 1, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 220000000, 0x66, 1, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 210000000, 0x84, 2, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 200000000, 0x5c, 1, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 190000000, 0x57, 1, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 180000000, 0x70, 2, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 170000000, 0x4d, 1, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 160000000, 0x98, 4, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 150000000, 0x75, 3, 2),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 120000000, 0x70, 1, 3),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 110000000, 0x66, 1, 3),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 100000000, 0x5c, 1, 3),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 90000000, 0x70, 2, 3),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 80000000, 0x98, 4, 3),
PLL_S3C2440_MPLL_RATE(12 * MHZ, 75000000, 0x75, 3, 3),
{ /* sentinel */ },
};
static struct samsung_pll_clock s3c244x_common_plls[] __initdata = {
[mpll] = PLL(pll_s3c2440_mpll, MPLL, "mpll", "xti",
LOCKTIME, MPLLCON, NULL),
[upll] = PLL(pll_s3c2410_upll, UPLL, "upll", "xti",
LOCKTIME, UPLLCON, NULL),
};
PNAME(hclk_p) = { "fclk", "div_hclk_2", "div_hclk_4", "div_hclk_3" };
PNAME(armclk_p) = { "fclk", "hclk" };
static struct samsung_mux_clock s3c244x_common_muxes[] __initdata = {
MUX(HCLK, "hclk", hclk_p, CLKDIVN, 1, 2),
MUX(ARMCLK, "armclk", armclk_p, CAMDIVN, 12, 1),
};
static struct samsung_fixed_factor_clock s3c244x_common_ffactor[] __initdata = {
FFACTOR(0, "div_hclk_2", "fclk", 1, 2, 0),
FFACTOR(0, "ff_cam", "div_cam", 2, 1, CLK_SET_RATE_PARENT),
};
static struct clk_div_table div_hclk_4_d[] = {
{ .val = 0, .div = 4 },
{ .val = 1, .div = 8 },
{ /* sentinel */ },
};
static struct clk_div_table div_hclk_3_d[] = {
{ .val = 0, .div = 3 },
{ .val = 1, .div = 6 },
{ /* sentinel */ },
};
static struct samsung_div_clock s3c244x_common_dividers[] __initdata = {
DIV(UCLK, "uclk", "upll", CLKDIVN, 3, 1),
DIV(0, "div_hclk", "fclk", CLKDIVN, 1, 1),
DIV_T(0, "div_hclk_4", "fclk", CAMDIVN, 9, 1, div_hclk_4_d),
DIV_T(0, "div_hclk_3", "fclk", CAMDIVN, 8, 1, div_hclk_3_d),
DIV(0, "div_cam", "upll", CAMDIVN, 0, 3),
};
static struct samsung_gate_clock s3c244x_common_gates[] __initdata = {
GATE(HCLK_CAM, "cam", "hclk", CLKCON, 19, 0, 0),
};
static struct samsung_clock_alias s3c244x_common_aliases[] __initdata = {
ALIAS(PCLK_UART0, "s3c2440-uart.0", "uart"),
ALIAS(PCLK_UART1, "s3c2440-uart.1", "uart"),
ALIAS(PCLK_UART2, "s3c2440-uart.2", "uart"),
ALIAS(PCLK_UART0, "s3c2440-uart.0", "clk_uart_baud2"),
ALIAS(PCLK_UART1, "s3c2440-uart.1", "clk_uart_baud2"),
ALIAS(PCLK_UART2, "s3c2440-uart.2", "clk_uart_baud2"),
ALIAS(HCLK_CAM, NULL, "camif"),
ALIAS(CAMIF, NULL, "camif-upll"),
};
/* S3C2440 specific clocks */
PNAME(s3c2440_camif_p) = { "upll", "ff_cam" };
static struct samsung_mux_clock s3c2440_muxes[] __initdata = {
MUX(CAMIF, "camif", s3c2440_camif_p, CAMDIVN, 4, 1),
};
static struct samsung_gate_clock s3c2440_gates[] __initdata = {
GATE(PCLK_AC97, "ac97", "pclk", CLKCON, 20, 0, 0),
};
/* S3C2442 specific clocks */
static struct samsung_fixed_factor_clock s3c2442_ffactor[] __initdata = {
FFACTOR(0, "upll_3", "upll", 1, 3, 0),
};
PNAME(s3c2442_camif_p) = { "upll", "ff_cam", "upll", "upll_3" };
static struct samsung_mux_clock s3c2442_muxes[] __initdata = {
MUX(CAMIF, "camif", s3c2442_camif_p, CAMDIVN, 4, 2),
};
/*
* fixed rate clocks generated outside the soc
* Only necessary until the devicetree-move is complete
*/
#define XTI 1
static struct samsung_fixed_rate_clock s3c2410_common_frate_clks[] __initdata = {
FRATE(XTI, "xti", NULL, 0, 0),
};
static void __init s3c2410_common_clk_register_fixed_ext(
struct samsung_clk_provider *ctx,
unsigned long xti_f)
{
struct samsung_clock_alias xti_alias = ALIAS(XTI, NULL, "xtal");
s3c2410_common_frate_clks[0].fixed_rate = xti_f;
samsung_clk_register_fixed_rate(ctx, s3c2410_common_frate_clks,
ARRAY_SIZE(s3c2410_common_frate_clks));
samsung_clk_register_alias(ctx, &xti_alias, 1);
}
void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
int current_soc,
void __iomem *base)
{
struct samsung_clk_provider *ctx;
struct clk_hw **hws;
reg_base = base;
if (np) {
reg_base = of_iomap(np, 0);
if (!reg_base)
panic("%s: failed to map registers\n", __func__);
}
ctx = samsung_clk_init(np, reg_base, NR_CLKS);
hws = ctx->clk_data.hws;
/* Register external clocks only in non-dt cases */
if (!np)
s3c2410_common_clk_register_fixed_ext(ctx, xti_f);
if (current_soc == S3C2410) {
if (clk_hw_get_rate(hws[XTI]) == 12 * MHZ) {
s3c2410_plls[mpll].rate_table = pll_s3c2410_12mhz_tbl;
s3c2410_plls[upll].rate_table = pll_s3c2410_12mhz_tbl;
}
/* Register PLLs. */
samsung_clk_register_pll(ctx, s3c2410_plls,
ARRAY_SIZE(s3c2410_plls), reg_base);
} else { /* S3C2440, S3C2442 */
if (clk_hw_get_rate(hws[XTI]) == 12 * MHZ) {
/*
* plls follow different calculation schemes, with the
* upll following the same scheme as the s3c2410 plls
*/
s3c244x_common_plls[mpll].rate_table =
pll_s3c244x_12mhz_tbl;
s3c244x_common_plls[upll].rate_table =
pll_s3c2410_12mhz_tbl;
}
/* Register PLLs. */
samsung_clk_register_pll(ctx, s3c244x_common_plls,
ARRAY_SIZE(s3c244x_common_plls), reg_base);
}
/* Register common internal clocks. */
samsung_clk_register_mux(ctx, s3c2410_common_muxes,
ARRAY_SIZE(s3c2410_common_muxes));
samsung_clk_register_div(ctx, s3c2410_common_dividers,
ARRAY_SIZE(s3c2410_common_dividers));
samsung_clk_register_gate(ctx, s3c2410_common_gates,
ARRAY_SIZE(s3c2410_common_gates));
if (current_soc == S3C2440 || current_soc == S3C2442) {
samsung_clk_register_div(ctx, s3c244x_common_dividers,
ARRAY_SIZE(s3c244x_common_dividers));
samsung_clk_register_gate(ctx, s3c244x_common_gates,
ARRAY_SIZE(s3c244x_common_gates));
samsung_clk_register_mux(ctx, s3c244x_common_muxes,
ARRAY_SIZE(s3c244x_common_muxes));
samsung_clk_register_fixed_factor(ctx, s3c244x_common_ffactor,
ARRAY_SIZE(s3c244x_common_ffactor));
}
/* Register SoC-specific clocks. */
switch (current_soc) {
case S3C2410:
samsung_clk_register_div(ctx, s3c2410_dividers,
ARRAY_SIZE(s3c2410_dividers));
samsung_clk_register_fixed_factor(ctx, s3c2410_ffactor,
ARRAY_SIZE(s3c2410_ffactor));
samsung_clk_register_alias(ctx, s3c2410_aliases,
ARRAY_SIZE(s3c2410_aliases));
break;
case S3C2440:
samsung_clk_register_mux(ctx, s3c2440_muxes,
ARRAY_SIZE(s3c2440_muxes));
samsung_clk_register_gate(ctx, s3c2440_gates,
ARRAY_SIZE(s3c2440_gates));
break;
case S3C2442:
samsung_clk_register_mux(ctx, s3c2442_muxes,
ARRAY_SIZE(s3c2442_muxes));
samsung_clk_register_fixed_factor(ctx, s3c2442_ffactor,
ARRAY_SIZE(s3c2442_ffactor));
break;
}
/*
* Register common aliases at the end, as some of the aliased clocks
* are SoC specific.
*/
samsung_clk_register_alias(ctx, s3c2410_common_aliases,
ARRAY_SIZE(s3c2410_common_aliases));
if (current_soc == S3C2440 || current_soc == S3C2442) {
samsung_clk_register_alias(ctx, s3c244x_common_aliases,
ARRAY_SIZE(s3c244x_common_aliases));
}
samsung_clk_sleep_init(reg_base, s3c2410_clk_regs,
ARRAY_SIZE(s3c2410_clk_regs));
samsung_clk_of_add_provider(np, ctx);
}
static void __init s3c2410_clk_init(struct device_node *np)
{
s3c2410_common_clk_init(np, 0, S3C2410, NULL);
}
CLK_OF_DECLARE(s3c2410_clk, "samsung,s3c2410-clock", s3c2410_clk_init);
static void __init s3c2440_clk_init(struct device_node *np)
{
s3c2410_common_clk_init(np, 0, S3C2440, NULL);
}
CLK_OF_DECLARE(s3c2440_clk, "samsung,s3c2440-clock", s3c2440_clk_init);
static void __init s3c2442_clk_init(struct device_node *np)
{
s3c2410_common_clk_init(np, 0, S3C2442, NULL);
}
CLK_OF_DECLARE(s3c2442_clk, "samsung,s3c2442-clock", s3c2442_clk_init);
drivers/clk/samsung/clk-s3c2412.c deleted 100644 → 0
View file @ 0b145589
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
*
* Common Clock Framework support for S3C2412 and S3C2413.
*/
#include <linux/clk-provider.h>
#include <linux/clk/samsung.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/reboot.h>
#include <dt-bindings/clock/s3c2412.h>
#include "clk.h"
#include "clk-pll.h"
#define LOCKTIME 0x00
#define MPLLCON 0x04
#define UPLLCON 0x08
#define CLKCON 0x0c
#define CLKDIVN 0x14
#define CLKSRC 0x1c
#define SWRST 0x30
static void __iomem *reg_base;
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
*/
static unsigned long s3c2412_clk_regs[] __initdata = {
LOCKTIME,
MPLLCON,
UPLLCON,
CLKCON,
CLKDIVN,
CLKSRC,
};
static struct clk_div_table divxti_d[] = {
{ .val = 0, .div = 1 },
{ .val = 1, .div = 2 },
{ .val = 2, .div = 4 },
{ .val = 3, .div = 6 },
{ .val = 4, .div = 8 },
{ .val = 5, .div = 10 },
{ .val = 6, .div = 12 },
{ .val = 7, .div = 14 },
{ /* sentinel */ },
};
static struct samsung_div_clock s3c2412_dividers[] __initdata = {
DIV_T(0, "div_xti", "xti", CLKSRC, 0, 3, divxti_d),
DIV(0, "div_cam", "mux_cam", CLKDIVN, 16, 4),
DIV(0, "div_i2s", "mux_i2s", CLKDIVN, 12, 4),
DIV(0, "div_uart", "mux_uart", CLKDIVN, 8, 4),
DIV(0, "div_usb", "mux_usb", CLKDIVN, 6, 1),
DIV(0, "div_hclk_half", "hclk", CLKDIVN, 5, 1),
DIV(ARMDIV, "armdiv", "msysclk", CLKDIVN, 3, 1),
DIV(PCLK, "pclk", "hclk", CLKDIVN, 2, 1),
DIV(HCLK, "hclk", "armdiv", CLKDIVN, 0, 2),
};
static struct samsung_fixed_factor_clock s3c2412_ffactor[] __initdata = {
FFACTOR(0, "ff_hclk", "hclk", 2, 1, CLK_SET_RATE_PARENT),
};
/*
* The first two use the OM[4] setting, which is not readable from
* software, so assume it is set to xti.
*/
PNAME(erefclk_p) = { "xti", "xti", "xti", "ext" };
PNAME(urefclk_p) = { "xti", "xti", "xti", "ext" };
PNAME(camclk_p) = { "usysclk", "hclk" };
PNAME(usbclk_p) = { "usysclk", "hclk" };
PNAME(i2sclk_p) = { "erefclk", "mpll" };
PNAME(uartclk_p) = { "erefclk", "mpll" };
PNAME(usysclk_p) = { "urefclk", "upll" };
PNAME(msysclk_p) = { "mdivclk", "mpll" };
PNAME(mdivclk_p) = { "xti", "div_xti" };
PNAME(armclk_p) = { "armdiv", "hclk" };
static struct samsung_mux_clock s3c2412_muxes[] __initdata = {
MUX(0, "erefclk", erefclk_p, CLKSRC, 14, 2),
MUX(0, "urefclk", urefclk_p, CLKSRC, 12, 2),
MUX(0, "mux_cam", camclk_p, CLKSRC, 11, 1),
MUX(0, "mux_usb", usbclk_p, CLKSRC, 10, 1),
MUX(0, "mux_i2s", i2sclk_p, CLKSRC, 9, 1),
MUX(0, "mux_uart", uartclk_p, CLKSRC, 8, 1),
MUX(USYSCLK, "usysclk", usysclk_p, CLKSRC, 5, 1),
MUX(MSYSCLK, "msysclk", msysclk_p, CLKSRC, 4, 1),
MUX(MDIVCLK, "mdivclk", mdivclk_p, CLKSRC, 3, 1),
MUX(ARMCLK, "armclk", armclk_p, CLKDIVN, 4, 1),
};
static struct samsung_pll_clock s3c2412_plls[] __initdata = {
PLL(pll_s3c2440_mpll, MPLL, "mpll", "xti", LOCKTIME, MPLLCON, NULL),
PLL(pll_s3c2410_upll, UPLL, "upll", "urefclk", LOCKTIME, UPLLCON, NULL),
};
static struct samsung_gate_clock s3c2412_gates[] __initdata = {
GATE(PCLK_WDT, "wdt", "pclk", CLKCON, 28, 0, 0),
GATE(PCLK_SPI, "spi", "pclk", CLKCON, 27, 0, 0),
GATE(PCLK_I2S, "i2s", "pclk", CLKCON, 26, 0, 0),
GATE(PCLK_I2C, "i2c", "pclk", CLKCON, 25, 0, 0),
GATE(PCLK_ADC, "adc", "pclk", CLKCON, 24, 0, 0),
GATE(PCLK_RTC, "rtc", "pclk", CLKCON, 23, 0, 0),
GATE(PCLK_GPIO, "gpio", "pclk", CLKCON, 22, CLK_IGNORE_UNUSED, 0),
GATE(PCLK_UART2, "uart2", "pclk", CLKCON, 21, 0, 0),
GATE(PCLK_UART1, "uart1", "pclk", CLKCON, 20, 0, 0),
GATE(PCLK_UART0, "uart0", "pclk", CLKCON, 19, 0, 0),
GATE(PCLK_SDI, "sdi", "pclk", CLKCON, 18, 0, 0),
GATE(PCLK_PWM, "pwm", "pclk", CLKCON, 17, 0, 0),
GATE(PCLK_USBD, "usb-device", "pclk", CLKCON, 16, 0, 0),
GATE(SCLK_CAM, "sclk_cam", "div_cam", CLKCON, 15, 0, 0),
GATE(SCLK_UART, "sclk_uart", "div_uart", CLKCON, 14, 0, 0),
GATE(SCLK_I2S, "sclk_i2s", "div_i2s", CLKCON, 13, 0, 0),
GATE(SCLK_USBH, "sclk_usbh", "div_usb", CLKCON, 12, 0, 0),
GATE(SCLK_USBD, "sclk_usbd", "div_usb", CLKCON, 11, 0, 0),
GATE(HCLK_HALF, "hclk_half", "div_hclk_half", CLKCON, 10, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_X2, "hclkx2", "ff_hclk", CLKCON, 9, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_SDRAM, "sdram", "hclk", CLKCON, 8, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_USBH, "usb-host", "hclk", CLKCON, 6, 0, 0),
GATE(HCLK_LCD, "lcd", "hclk", CLKCON, 5, 0, 0),
GATE(HCLK_NAND, "nand", "hclk", CLKCON, 4, 0, 0),
GATE(HCLK_DMA3, "dma3", "hclk", CLKCON, 3, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA2, "dma2", "hclk", CLKCON, 2, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA1, "dma1", "hclk", CLKCON, 1, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA0, "dma0", "hclk", CLKCON, 0, CLK_IGNORE_UNUSED, 0),
};
static struct samsung_clock_alias s3c2412_aliases[] __initdata = {
ALIAS(PCLK_UART0, "s3c2412-uart.0", "uart"),
ALIAS(PCLK_UART1, "s3c2412-uart.1", "uart"),
ALIAS(PCLK_UART2, "s3c2412-uart.2", "uart"),
ALIAS(PCLK_UART0, "s3c2412-uart.0", "clk_uart_baud2"),
ALIAS(PCLK_UART1, "s3c2412-uart.1", "clk_uart_baud2"),
ALIAS(PCLK_UART2, "s3c2412-uart.2", "clk_uart_baud2"),
ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
ALIAS(PCLK_I2C, "s3c2410-i2c.0", "i2c"),
ALIAS(PCLK_ADC, NULL, "adc"),
ALIAS(PCLK_RTC, NULL, "rtc"),
ALIAS(PCLK_PWM, NULL, "timers"),
ALIAS(HCLK_LCD, NULL, "lcd"),
ALIAS(PCLK_USBD, NULL, "usb-device"),
ALIAS(SCLK_USBD, NULL, "usb-bus-gadget"),
ALIAS(HCLK_USBH, NULL, "usb-host"),
ALIAS(SCLK_USBH, NULL, "usb-bus-host"),
ALIAS(ARMCLK, NULL, "armclk"),
ALIAS(HCLK, NULL, "hclk"),
ALIAS(MPLL, NULL, "mpll"),
ALIAS(MSYSCLK, NULL, "fclk"),
};
static int s3c2412_restart(struct notifier_block *this,
unsigned long mode, void *cmd)
{
/* errata "Watch-dog/Software Reset Problem" specifies that
* this reset must be done with the SYSCLK sourced from
* EXTCLK instead of FOUT to avoid a glitch in the reset
* mechanism.
*
* See the watchdog section of the S3C2412 manual for more
* information on this fix.
*/
__raw_writel(0x00, reg_base + CLKSRC);
__raw_writel(0x533C2412, reg_base + SWRST);
return NOTIFY_DONE;
}
static struct notifier_block s3c2412_restart_handler = {
.notifier_call = s3c2412_restart,
.priority = 129,
};
/*
* fixed rate clocks generated outside the soc
* Only necessary until the devicetree-move is complete
*/
#define XTI 1
static struct samsung_fixed_rate_clock s3c2412_common_frate_clks[] __initdata = {
FRATE(XTI, "xti", NULL, 0, 0),
FRATE(0, "ext", NULL, 0, 0),
};
static void __init s3c2412_common_clk_register_fixed_ext(
struct samsung_clk_provider *ctx,
unsigned long xti_f, unsigned long ext_f)
{
/* xtal alias is necessary for the current cpufreq driver */
struct samsung_clock_alias xti_alias = ALIAS(XTI, NULL, "xtal");
s3c2412_common_frate_clks[0].fixed_rate = xti_f;
s3c2412_common_frate_clks[1].fixed_rate = ext_f;
samsung_clk_register_fixed_rate(ctx, s3c2412_common_frate_clks,
ARRAY_SIZE(s3c2412_common_frate_clks));
samsung_clk_register_alias(ctx, &xti_alias, 1);
}
void __init s3c2412_common_clk_init(struct device_node *np, unsigned long xti_f,
unsigned long ext_f, void __iomem *base)
{
struct samsung_clk_provider *ctx;
int ret;
reg_base = base;
if (np) {
reg_base = of_iomap(np, 0);
if (!reg_base)
panic("%s: failed to map registers\n", __func__);
}
ctx = samsung_clk_init(np, reg_base, NR_CLKS);
/* Register external clocks only in non-dt cases */
if (!np)
s3c2412_common_clk_register_fixed_ext(ctx, xti_f, ext_f);
/* Register PLLs. */
samsung_clk_register_pll(ctx, s3c2412_plls, ARRAY_SIZE(s3c2412_plls),
reg_base);
/* Register common internal clocks. */
samsung_clk_register_mux(ctx, s3c2412_muxes, ARRAY_SIZE(s3c2412_muxes));
samsung_clk_register_div(ctx, s3c2412_dividers,
ARRAY_SIZE(s3c2412_dividers));
samsung_clk_register_gate(ctx, s3c2412_gates,
ARRAY_SIZE(s3c2412_gates));
samsung_clk_register_fixed_factor(ctx, s3c2412_ffactor,
ARRAY_SIZE(s3c2412_ffactor));
samsung_clk_register_alias(ctx, s3c2412_aliases,
ARRAY_SIZE(s3c2412_aliases));
samsung_clk_sleep_init(reg_base, s3c2412_clk_regs,
ARRAY_SIZE(s3c2412_clk_regs));
samsung_clk_of_add_provider(np, ctx);
ret = register_restart_handler(&s3c2412_restart_handler);
if (ret)
pr_warn("cannot register restart handler, %d\n", ret);
}
static void __init s3c2412_clk_init(struct device_node *np)
{
s3c2412_common_clk_init(np, 0, 0, NULL);
}
CLK_OF_DECLARE(s3c2412_clk, "samsung,s3c2412-clock", s3c2412_clk_init);
drivers/clk/samsung/clk-s3c2443.c deleted 100644 → 0
View file @ 0b145589
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
*
* Common Clock Framework support for S3C2443 and following SoCs.
*/
#include <linux/clk-provider.h>
#include <linux/clk/samsung.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/reboot.h>
#include <dt-bindings/clock/s3c2443.h>
#include "clk.h"
#include "clk-pll.h"
/* S3C2416 clock controller register offsets */
#define LOCKCON0 0x00
#define LOCKCON1 0x04
#define MPLLCON 0x10
#define EPLLCON 0x18
#define EPLLCON_K 0x1C
#define CLKSRC 0x20
#define CLKDIV0 0x24
#define CLKDIV1 0x28
#define CLKDIV2 0x2C
#define HCLKCON 0x30
#define PCLKCON 0x34
#define SCLKCON 0x38
#define SWRST 0x44
/* the soc types */
enum supported_socs {
S3C2416,
S3C2443,
S3C2450,
};
static void __iomem *reg_base;
/*
* list of controller registers to be saved and restored during a
* suspend/resume cycle.
*/
static unsigned long s3c2443_clk_regs[] __initdata = {
LOCKCON0,
LOCKCON1,
MPLLCON,
EPLLCON,
EPLLCON_K,
CLKSRC,
CLKDIV0,
CLKDIV1,
CLKDIV2,
PCLKCON,
HCLKCON,
SCLKCON,
};
PNAME(epllref_p) = { "mpllref", "mpllref", "xti", "ext" };
PNAME(esysclk_p) = { "epllref", "epll" };
PNAME(mpllref_p) = { "xti", "mdivclk" };
PNAME(msysclk_p) = { "mpllref", "mpll" };
PNAME(armclk_p) = { "armdiv" , "hclk" };
PNAME(i2s0_p) = { "div_i2s0", "ext_i2s", "epllref", "epllref" };
static struct samsung_mux_clock s3c2443_common_muxes[] __initdata = {
MUX(0, "epllref", epllref_p, CLKSRC, 7, 2),
MUX(ESYSCLK, "esysclk", esysclk_p, CLKSRC, 6, 1),
MUX(0, "mpllref", mpllref_p, CLKSRC, 3, 1),
MUX(MSYSCLK, "msysclk", msysclk_p, CLKSRC, 4, 1),
MUX(ARMCLK, "armclk", armclk_p, CLKDIV0, 13, 1),
MUX(0, "mux_i2s0", i2s0_p, CLKSRC, 14, 2),
};
static struct clk_div_table hclk_d[] = {
{ .val = 0, .div = 1 },
{ .val = 1, .div = 2 },
{ .val = 3, .div = 4 },
{ /* sentinel */ },
};
static struct clk_div_table mdivclk_d[] = {
{ .val = 0, .div = 1 },
{ .val = 1, .div = 3 },
{ .val = 2, .div = 5 },
{ .val = 3, .div = 7 },
{ .val = 4, .div = 9 },
{ .val = 5, .div = 11 },
{ .val = 6, .div = 13 },
{ .val = 7, .div = 15 },
{ /* sentinel */ },
};
static struct samsung_div_clock s3c2443_common_dividers[] __initdata = {
DIV_T(0, "mdivclk", "xti", CLKDIV0, 6, 3, mdivclk_d),
DIV(0, "prediv", "msysclk", CLKDIV0, 4, 2),
DIV_T(HCLK, "hclk", "prediv", CLKDIV0, 0, 2, hclk_d),
DIV(PCLK, "pclk", "hclk", CLKDIV0, 2, 1),
DIV(0, "div_hsspi0_epll", "esysclk", CLKDIV1, 24, 2),
DIV(0, "div_fimd", "esysclk", CLKDIV1, 16, 8),
DIV(0, "div_i2s0", "esysclk", CLKDIV1, 12, 4),
DIV(0, "div_uart", "esysclk", CLKDIV1, 8, 4),
DIV(0, "div_hsmmc1", "esysclk", CLKDIV1, 6, 2),
DIV(0, "div_usbhost", "esysclk", CLKDIV1, 4, 2),
};
static struct samsung_gate_clock s3c2443_common_gates[] __initdata = {
GATE(SCLK_HSMMC_EXT, "sclk_hsmmcext", "ext", SCLKCON, 13, 0, 0),
GATE(SCLK_HSMMC1, "sclk_hsmmc1", "div_hsmmc1", SCLKCON, 12, 0, 0),
GATE(SCLK_FIMD, "sclk_fimd", "div_fimd", SCLKCON, 10, 0, 0),
GATE(SCLK_I2S0, "sclk_i2s0", "mux_i2s0", SCLKCON, 9, 0, 0),
GATE(SCLK_UART, "sclk_uart", "div_uart", SCLKCON, 8, 0, 0),
GATE(SCLK_USBH, "sclk_usbhost", "div_usbhost", SCLKCON, 1, 0, 0),
GATE(HCLK_DRAM, "dram", "hclk", HCLKCON, 19, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_SSMC, "ssmc", "hclk", HCLKCON, 18, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_HSMMC1, "hsmmc1", "hclk", HCLKCON, 16, 0, 0),
GATE(HCLK_USBD, "usb-device", "hclk", HCLKCON, 12, 0, 0),
GATE(HCLK_USBH, "usb-host", "hclk", HCLKCON, 11, 0, 0),
GATE(HCLK_LCD, "lcd", "hclk", HCLKCON, 9, 0, 0),
GATE(HCLK_DMA5, "dma5", "hclk", HCLKCON, 5, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA4, "dma4", "hclk", HCLKCON, 4, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA3, "dma3", "hclk", HCLKCON, 3, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA2, "dma2", "hclk", HCLKCON, 2, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA1, "dma1", "hclk", HCLKCON, 1, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA0, "dma0", "hclk", HCLKCON, 0, CLK_IGNORE_UNUSED, 0),
GATE(PCLK_GPIO, "gpio", "pclk", PCLKCON, 13, CLK_IGNORE_UNUSED, 0),
GATE(PCLK_RTC, "rtc", "pclk", PCLKCON, 12, 0, 0),
GATE(PCLK_WDT, "wdt", "pclk", PCLKCON, 11, 0, 0),
GATE(PCLK_PWM, "pwm", "pclk", PCLKCON, 10, 0, 0),
GATE(PCLK_I2S0, "i2s0", "pclk", PCLKCON, 9, 0, 0),
GATE(PCLK_AC97, "ac97", "pclk", PCLKCON, 8, 0, 0),
GATE(PCLK_ADC, "adc", "pclk", PCLKCON, 7, 0, 0),
GATE(PCLK_SPI0, "spi0", "pclk", PCLKCON, 6, 0, 0),
GATE(PCLK_I2C0, "i2c0", "pclk", PCLKCON, 4, 0, 0),
GATE(PCLK_UART3, "uart3", "pclk", PCLKCON, 3, 0, 0),
GATE(PCLK_UART2, "uart2", "pclk", PCLKCON, 2, 0, 0),
GATE(PCLK_UART1, "uart1", "pclk", PCLKCON, 1, 0, 0),
GATE(PCLK_UART0, "uart0", "pclk", PCLKCON, 0, 0, 0),
};
static struct samsung_clock_alias s3c2443_common_aliases[] __initdata = {
ALIAS(MSYSCLK, NULL, "msysclk"),
ALIAS(ARMCLK, NULL, "armclk"),
ALIAS(MPLL, NULL, "mpll"),
ALIAS(EPLL, NULL, "epll"),
ALIAS(HCLK, NULL, "hclk"),
ALIAS(HCLK_SSMC, NULL, "nand"),
ALIAS(PCLK_UART0, "s3c2440-uart.0", "uart"),
ALIAS(PCLK_UART1, "s3c2440-uart.1", "uart"),
ALIAS(PCLK_UART2, "s3c2440-uart.2", "uart"),
ALIAS(PCLK_UART3, "s3c2440-uart.3", "uart"),
ALIAS(PCLK_UART0, "s3c2440-uart.0", "clk_uart_baud2"),
ALIAS(PCLK_UART1, "s3c2440-uart.1", "clk_uart_baud2"),
ALIAS(PCLK_UART2, "s3c2440-uart.2", "clk_uart_baud2"),
ALIAS(PCLK_UART3, "s3c2440-uart.3", "clk_uart_baud2"),
ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
ALIAS(PCLK_PWM, NULL, "timers"),
ALIAS(PCLK_RTC, NULL, "rtc"),
ALIAS(PCLK_WDT, NULL, "watchdog"),
ALIAS(PCLK_ADC, NULL, "adc"),
ALIAS(PCLK_I2C0, "s3c2410-i2c.0", "i2c"),
ALIAS(HCLK_USBD, NULL, "usb-device"),
ALIAS(HCLK_USBH, NULL, "usb-host"),
ALIAS(SCLK_USBH, NULL, "usb-bus-host"),
ALIAS(PCLK_SPI0, "s3c2443-spi.0", "spi"),
ALIAS(PCLK_SPI0, "s3c2443-spi.0", "spi_busclk0"),
ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"),
ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
ALIAS(PCLK_I2S0, "samsung-i2s.0", "iis"),
ALIAS(SCLK_I2S0, NULL, "i2s-if"),
ALIAS(HCLK_LCD, NULL, "lcd"),
ALIAS(SCLK_FIMD, NULL, "sclk_fimd"),
};
/* S3C2416 specific clocks */
static struct samsung_pll_clock s3c2416_pll_clks[] __initdata = {
PLL(pll_6552_s3c2416, MPLL, "mpll", "mpllref", LOCKCON0, MPLLCON, NULL),
PLL(pll_6553, EPLL, "epll", "epllref", LOCKCON1, EPLLCON, NULL),
};
PNAME(s3c2416_hsmmc0_p) = { "sclk_hsmmc0", "sclk_hsmmcext" };
PNAME(s3c2416_hsmmc1_p) = { "sclk_hsmmc1", "sclk_hsmmcext" };
PNAME(s3c2416_hsspi0_p) = { "hsspi0_epll", "hsspi0_mpll" };
static struct clk_div_table armdiv_s3c2416_d[] = {
{ .val = 0, .div = 1 },
{ .val = 1, .div = 2 },
{ .val = 2, .div = 3 },
{ .val = 3, .div = 4 },
{ .val = 5, .div = 6 },
{ .val = 7, .div = 8 },
{ /* sentinel */ },
};
static struct samsung_div_clock s3c2416_dividers[] __initdata = {
DIV_T(ARMDIV, "armdiv", "msysclk", CLKDIV0, 9, 3, armdiv_s3c2416_d),
DIV(0, "div_hsspi0_mpll", "msysclk", CLKDIV2, 0, 4),
DIV(0, "div_hsmmc0", "esysclk", CLKDIV2, 6, 2),
};
static struct samsung_mux_clock s3c2416_muxes[] __initdata = {
MUX(MUX_HSMMC0, "mux_hsmmc0", s3c2416_hsmmc0_p, CLKSRC, 16, 1),
MUX(MUX_HSMMC1, "mux_hsmmc1", s3c2416_hsmmc1_p, CLKSRC, 17, 1),
MUX(MUX_HSSPI0, "mux_hsspi0", s3c2416_hsspi0_p, CLKSRC, 18, 1),
};
static struct samsung_gate_clock s3c2416_gates[] __initdata = {
GATE(0, "hsspi0_mpll", "div_hsspi0_mpll", SCLKCON, 19, 0, 0),
GATE(0, "hsspi0_epll", "div_hsspi0_epll", SCLKCON, 14, 0, 0),
GATE(0, "sclk_hsmmc0", "div_hsmmc0", SCLKCON, 6, 0, 0),
GATE(HCLK_2D, "2d", "hclk", HCLKCON, 20, 0, 0),
GATE(HCLK_HSMMC0, "hsmmc0", "hclk", HCLKCON, 15, 0, 0),
GATE(HCLK_IROM, "irom", "hclk", HCLKCON, 13, CLK_IGNORE_UNUSED, 0),
GATE(PCLK_PCM, "pcm", "pclk", PCLKCON, 19, 0, 0),
};
static struct samsung_clock_alias s3c2416_aliases[] __initdata = {
ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
ALIAS(MUX_HSMMC0, "s3c-sdhci.0", "mmc_busclk.2"),
ALIAS(MUX_HSMMC1, "s3c-sdhci.1", "mmc_busclk.2"),
ALIAS(MUX_HSSPI0, "s3c2443-spi.0", "spi_busclk2"),
ALIAS(ARMDIV, NULL, "armdiv"),
};
/* S3C2443 specific clocks */
static struct samsung_pll_clock s3c2443_pll_clks[] __initdata = {
PLL(pll_3000, MPLL, "mpll", "mpllref", LOCKCON0, MPLLCON, NULL),
PLL(pll_2126, EPLL, "epll", "epllref", LOCKCON1, EPLLCON, NULL),
};
static struct clk_div_table armdiv_s3c2443_d[] = {
{ .val = 0, .div = 1 },
{ .val = 8, .div = 2 },
{ .val = 2, .div = 3 },
{ .val = 9, .div = 4 },
{ .val = 10, .div = 6 },
{ .val = 11, .div = 8 },
{ .val = 13, .div = 12 },
{ .val = 15, .div = 16 },
{ /* sentinel */ },
};
static struct samsung_div_clock s3c2443_dividers[] __initdata = {
DIV_T(ARMDIV, "armdiv", "msysclk", CLKDIV0, 9, 4, armdiv_s3c2443_d),
DIV(0, "div_cam", "esysclk", CLKDIV1, 26, 4),
};
static struct samsung_gate_clock s3c2443_gates[] __initdata = {
GATE(SCLK_HSSPI0, "sclk_hsspi0", "div_hsspi0_epll", SCLKCON, 14, 0, 0),
GATE(SCLK_CAM, "sclk_cam", "div_cam", SCLKCON, 11, 0, 0),
GATE(HCLK_CFC, "cfc", "hclk", HCLKCON, 17, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_CAM, "cam", "hclk", HCLKCON, 8, 0, 0),
GATE(PCLK_SPI1, "spi1", "pclk", PCLKCON, 15, 0, 0),
GATE(PCLK_SDI, "sdi", "pclk", PCLKCON, 5, 0, 0),
};
static struct samsung_clock_alias s3c2443_aliases[] __initdata = {
ALIAS(SCLK_HSSPI0, "s3c2443-spi.0", "spi_busclk2"),
ALIAS(SCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.2"),
ALIAS(SCLK_CAM, NULL, "camif-upll"),
ALIAS(PCLK_SPI1, "s3c2410-spi.0", "spi"),
ALIAS(PCLK_SDI, NULL, "sdi"),
ALIAS(HCLK_CFC, NULL, "cfc"),
ALIAS(ARMDIV, NULL, "armdiv"),
};
/* S3C2450 specific clocks */
PNAME(s3c2450_cam_p) = { "div_cam", "hclk" };
PNAME(s3c2450_hsspi1_p) = { "hsspi1_epll", "hsspi1_mpll" };
PNAME(i2s1_p) = { "div_i2s1", "ext_i2s", "epllref", "epllref" };
static struct samsung_div_clock s3c2450_dividers[] __initdata = {
DIV(0, "div_cam", "esysclk", CLKDIV1, 26, 4),
DIV(0, "div_hsspi1_epll", "esysclk", CLKDIV2, 24, 2),
DIV(0, "div_hsspi1_mpll", "msysclk", CLKDIV2, 16, 4),
DIV(0, "div_i2s1", "esysclk", CLKDIV2, 12, 4),
};
static struct samsung_mux_clock s3c2450_muxes[] __initdata = {
MUX(0, "mux_cam", s3c2450_cam_p, CLKSRC, 20, 1),
MUX(MUX_HSSPI1, "mux_hsspi1", s3c2450_hsspi1_p, CLKSRC, 19, 1),
MUX(0, "mux_i2s1", i2s1_p, CLKSRC, 12, 2),
};
static struct samsung_gate_clock s3c2450_gates[] __initdata = {
GATE(SCLK_I2S1, "sclk_i2s1", "div_i2s1", SCLKCON, 5, 0, 0),
GATE(HCLK_CFC, "cfc", "hclk", HCLKCON, 17, 0, 0),
GATE(HCLK_CAM, "cam", "hclk", HCLKCON, 8, 0, 0),
GATE(HCLK_DMA7, "dma7", "hclk", HCLKCON, 7, CLK_IGNORE_UNUSED, 0),
GATE(HCLK_DMA6, "dma6", "hclk", HCLKCON, 6, CLK_IGNORE_UNUSED, 0),
GATE(PCLK_I2S1, "i2s1", "pclk", PCLKCON, 17, 0, 0),
GATE(PCLK_I2C1, "i2c1", "pclk", PCLKCON, 16, 0, 0),
GATE(PCLK_SPI1, "spi1", "pclk", PCLKCON, 14, 0, 0),
};
static struct samsung_clock_alias s3c2450_aliases[] __initdata = {
ALIAS(PCLK_SPI1, "s3c2443-spi.1", "spi"),
ALIAS(PCLK_SPI1, "s3c2443-spi.1", "spi_busclk0"),
ALIAS(MUX_HSSPI1, "s3c2443-spi.1", "spi_busclk2"),
ALIAS(PCLK_I2C1, "s3c2410-i2c.1", "i2c"),
};
static int s3c2443_restart(struct notifier_block *this,
unsigned long mode, void *cmd)
{
__raw_writel(0x533c2443, reg_base + SWRST);
return NOTIFY_DONE;
}
static struct notifier_block s3c2443_restart_handler = {
.notifier_call = s3c2443_restart,
.priority = 129,
};
/*
* fixed rate clocks generated outside the soc
* Only necessary until the devicetree-move is complete
*/
static struct samsung_fixed_rate_clock s3c2443_common_frate_clks[] __initdata = {
FRATE(0, "xti", NULL, 0, 0),
FRATE(0, "ext", NULL, 0, 0),
FRATE(0, "ext_i2s", NULL, 0, 0),
FRATE(0, "ext_uart", NULL, 0, 0),
};
static void __init s3c2443_common_clk_register_fixed_ext(
struct samsung_clk_provider *ctx, unsigned long xti_f)
{
s3c2443_common_frate_clks[0].fixed_rate = xti_f;
samsung_clk_register_fixed_rate(ctx, s3c2443_common_frate_clks,
ARRAY_SIZE(s3c2443_common_frate_clks));
}
void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f,
int current_soc,
void __iomem *base)
{
struct samsung_clk_provider *ctx;
int ret;
reg_base = base;
if (np) {
reg_base = of_iomap(np, 0);
if (!reg_base)
panic("%s: failed to map registers\n", __func__);
}
ctx = samsung_clk_init(np, reg_base, NR_CLKS);
/* Register external clocks only in non-dt cases */
if (!np)
s3c2443_common_clk_register_fixed_ext(ctx, xti_f);
/* Register PLLs. */
if (current_soc == S3C2416 || current_soc == S3C2450)
samsung_clk_register_pll(ctx, s3c2416_pll_clks,
ARRAY_SIZE(s3c2416_pll_clks), reg_base);
else
samsung_clk_register_pll(ctx, s3c2443_pll_clks,
ARRAY_SIZE(s3c2443_pll_clks), reg_base);
/* Register common internal clocks. */
samsung_clk_register_mux(ctx, s3c2443_common_muxes,
ARRAY_SIZE(s3c2443_common_muxes));
samsung_clk_register_div(ctx, s3c2443_common_dividers,
ARRAY_SIZE(s3c2443_common_dividers));
samsung_clk_register_gate(ctx, s3c2443_common_gates,
ARRAY_SIZE(s3c2443_common_gates));
samsung_clk_register_alias(ctx, s3c2443_common_aliases,
ARRAY_SIZE(s3c2443_common_aliases));
/* Register SoC-specific clocks. */
switch (current_soc) {
case S3C2450:
samsung_clk_register_div(ctx, s3c2450_dividers,
ARRAY_SIZE(s3c2450_dividers));
samsung_clk_register_mux(ctx, s3c2450_muxes,
ARRAY_SIZE(s3c2450_muxes));
samsung_clk_register_gate(ctx, s3c2450_gates,
ARRAY_SIZE(s3c2450_gates));
samsung_clk_register_alias(ctx, s3c2450_aliases,
ARRAY_SIZE(s3c2450_aliases));
fallthrough; /* as s3c2450 extends the s3c2416 clocks */
case S3C2416:
samsung_clk_register_div(ctx, s3c2416_dividers,
ARRAY_SIZE(s3c2416_dividers));
samsung_clk_register_mux(ctx, s3c2416_muxes,
ARRAY_SIZE(s3c2416_muxes));
samsung_clk_register_gate(ctx, s3c2416_gates,
ARRAY_SIZE(s3c2416_gates));
samsung_clk_register_alias(ctx, s3c2416_aliases,
ARRAY_SIZE(s3c2416_aliases));
break;
case S3C2443:
samsung_clk_register_div(ctx, s3c2443_dividers,
ARRAY_SIZE(s3c2443_dividers));
samsung_clk_register_gate(ctx, s3c2443_gates,
ARRAY_SIZE(s3c2443_gates));
samsung_clk_register_alias(ctx, s3c2443_aliases,
ARRAY_SIZE(s3c2443_aliases));
break;
}
samsung_clk_sleep_init(reg_base, s3c2443_clk_regs,
ARRAY_SIZE(s3c2443_clk_regs));
samsung_clk_of_add_provider(np, ctx);
ret = register_restart_handler(&s3c2443_restart_handler);
if (ret)
pr_warn("cannot register restart handler, %d\n", ret);
}
static void __init s3c2416_clk_init(struct device_node *np)
{
s3c2443_common_clk_init(np, 0, S3C2416, NULL);
}
CLK_OF_DECLARE(s3c2416_clk, "samsung,s3c2416-clock", s3c2416_clk_init);
static void __init s3c2443_clk_init(struct device_node *np)
{
s3c2443_common_clk_init(np, 0, S3C2443, NULL);
}
CLK_OF_DECLARE(s3c2443_clk, "samsung,s3c2443-clock", s3c2443_clk_init);
static void __init s3c2450_clk_init(struct device_node *np)
{
s3c2443_common_clk_init(np, 0, S3C2450, NULL);
}
CLK_OF_DECLARE(s3c2450_clk, "samsung,s3c2450-clock", s3c2450_clk_init);
include/linux/platform_data/clk-s3c2410.h deleted 100644 → 0
View file @ 0b145589
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2020 Krzysztof Kozlowski <krzk@kernel.org>
*/
#ifndef __LINUX_PLATFORM_DATA_CLK_S3C2410_H_
#define __LINUX_PLATFORM_DATA_CLK_S3C2410_H_
/**
* struct s3c2410_clk_platform_data - platform data for S3C2410 clock driver
*
* @modify_misccr: Function to modify the MISCCR and return the new value
*/
struct s3c2410_clk_platform_data {
unsigned int (*modify_misccr)(unsigned int clr, unsigned int chg);
};
#endif /* __LINUX_PLATFORM_DATA_CLK_S3C2410_H_ */
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