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Date: Thu, 16 Jul 2015 16:46:56 +0900
From: Krzysztof Kozlowski <k.kozlowski@...sung.com>
To: Sylwester Nawrocki <s.nawrocki@...sung.com>
Cc: Chanwoo Choi <cw00.choi@...sung.com>, tomasz.figa@...il.com,
mturquette@...libre.com, sboyd@...eaurora.org, kgene@...nel.org,
Kozik <k.kozlowski@...sung.com>, thomas.ab@...sung.com,
Bartłomiej Żołnierkiewicz
<b.zolnierkie@...sung.com>, kyungmin.park@...sung.com,
linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org
Subject: Re: [PATCH v6 1/3] clk: samsung: exynos3250: Add cpu clock
configuration data and instaniate cpu clock
2015-07-02 9:42 GMT+09:00 Chanwoo Choi <cw00.choi@...sung.com>:
> 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@...sung.com>
> Cc: Tomasz Figa <tomasz.figa@...il.com>
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
> Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> ---
> drivers/clk/samsung/clk-exynos3250.c | 32 ++++++++++++++++++++++++++++++--
> include/dt-bindings/clock/exynos3250.h | 1 +
Sylwester,
I think this patch also waits for your review or ack.
The patchset is rebased on Bartlomiej's series for Exynos5250 cpufreq
so the easiest way would be to take it through samsung-soc tree.
Best regards,
Krzysztof
> 2 files changed, 31 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/clk/samsung/clk-exynos3250.c b/drivers/clk/samsung/clk-exynos3250.c
> index 538de66a759e..378ad5ad3492 100644
> --- a/drivers/clk/samsung/clk-exynos3250.c
> +++ b/drivers/clk/samsung/clk-exynos3250.c
> @@ -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);
> diff --git a/include/dt-bindings/clock/exynos3250.h b/include/dt-bindings/clock/exynos3250.h
> index aab088d30199..63d01c15d2b3 100644
> --- a/include/dt-bindings/clock/exynos3250.h
> +++ b/include/dt-bindings/clock/exynos3250.h
> @@ -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
> --
> 1.8.5.5
>
> --
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