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clk: exynos3250: Add cpu clock configuration data and instaniate cpu clock 

This patch add CPU clock configuration data and instantiate the CPU
clock type for Exynos3250 to support Samsung specific cpu-clock type.

Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
This commit is contained in:
Chanwoo Choi 2015-07-24 12:42:40 +09:00 committed by Kukjin Kim
parent d7cc4c8165
commit 7c9422ef55
2 changed files with 31 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/clk/samsung/clk-exynos3250.c
View File

@ -19,6 +19,7 @@
#include <dt-bindings/clock/exynos3250.h>
#include "clk.h"
#include "clk-cpu.h"
#include "clk-pll.h"
#define SRC_LEFTBUS 0x4200
@ -319,8 +320,10 @@ static struct samsung_mux_clock mux_clks[] __initdata = {
MUX(CLK_MOUT_MPLL_USER_C, "mout_mpll_user_c", mout_mpll_user_p,
SRC_CPU, 24, 1),
MUX(CLK_MOUT_HPM, "mout_hpm", mout_hpm_p, SRC_CPU, 20, 1),
MUX(CLK_MOUT_CORE, "mout_core", mout_core_p, SRC_CPU, 16, 1),
MUX(CLK_MOUT_APLL, "mout_apll", mout_apll_p, SRC_CPU, 0, 1),
MUX_F(CLK_MOUT_CORE, "mout_core", mout_core_p, SRC_CPU, 16, 1,
CLK_SET_RATE_PARENT, 0),
MUX_F(CLK_MOUT_APLL, "mout_apll", mout_apll_p, SRC_CPU, 0, 1,
CLK_SET_RATE_PARENT, 0),
};
static struct samsung_div_clock div_clks[] __initdata = {
@ -772,6 +775,26 @@ static struct samsung_cmu_info cmu_info __initdata = {
.nr_clk_regs = ARRAY_SIZE(exynos3250_cmu_clk_regs),
};
#define E3250_CPU_DIV0(apll, pclk_dbg, atb, corem) \
(((apll) << 24) | ((pclk_dbg) << 20) | ((atb) << 16) | \
((corem) << 4))
#define E3250_CPU_DIV1(hpm, copy) \
(((hpm) << 4) | ((copy) << 0))
static const struct exynos_cpuclk_cfg_data e3250_armclk_d[] __initconst = {
{ 1000000, E3250_CPU_DIV0(1, 7, 4, 1), E3250_CPU_DIV1(7, 7), },
{ 900000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
{ 800000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
{ 700000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
{ 600000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
{ 500000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
{ 400000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
{ 300000, E3250_CPU_DIV0(1, 5, 3, 1), E3250_CPU_DIV1(7, 7), },
{ 200000, E3250_CPU_DIV0(1, 3, 3, 1), E3250_CPU_DIV1(7, 7), },
{ 100000, E3250_CPU_DIV0(1, 1, 1, 1), E3250_CPU_DIV1(7, 7), },
{ 0 },
};
static void __init exynos3250_cmu_init(struct device_node *np)
{
struct samsung_clk_provider *ctx;
@ -780,6 +803,11 @@ static void __init exynos3250_cmu_init(struct device_node *np)
if (!ctx)
return;
exynos_register_cpu_clock(ctx, CLK_ARM_CLK, "armclk",
mout_core_p[0], mout_core_p[1], 0x14200,
e3250_armclk_d, ARRAY_SIZE(e3250_armclk_d),
CLK_CPU_HAS_DIV1);
exynos3_core_down_clock(ctx->reg_base);
}
CLK_OF_DECLARE(exynos3250_cmu, "samsung,exynos3250-cmu", exynos3250_cmu_init);

1
include/dt-bindings/clock/exynos3250.h
View File

@ -31,6 +31,7 @@
#define CLK_FOUT_VPLL 4
#define CLK_FOUT_UPLL 5
#define CLK_FOUT_MPLL 6
#define CLK_ARM_CLK 7
/* Muxes */
#define CLK_MOUT_MPLL_USER_L 16