Re: [PATCH v4 2/6] clk: samsung: exynos4x12: add cpu clock configuration data and instantiate cpu clock

[Michael Turquette]

Quoting Bartlomiej Zolnierkiewicz (2015-08-06 06:41:50)
> With the addition of the new Samsung specific cpu-clock type, the
> arm clock can be represented as a cpu-clock type. Add the CPU clock
> configuration data and instantiate the CPU clock type for Exynos4x12.
> 
> Based on the earlier work by Thomas Abraham.
> 
> Cc: Tomasz Figa <tomasz.figa@xxxxxxxxx>
> Cc: Michael Turquette <mturquette@xxxxxxxxxxxx>
> Cc: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
> Reviewed-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
> Acked-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
> Tested-by: Tobias Jakobi <tjakobi@xxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>

Acked-by: Michael Turquette <mturquette@xxxxxxxxxxxx>

> ---
>  drivers/clk/samsung/clk-exynos4.c | 50 +++++++++++++++++++++++++++++++++++++++
>  1 file changed, 50 insertions(+)
> 
> diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
> index 251f48d..7f370d3 100644
> --- a/drivers/clk/samsung/clk-exynos4.c
> +++ b/drivers/clk/samsung/clk-exynos4.c
> @@ -1398,6 +1398,45 @@ static const struct exynos_cpuclk_cfg_data e4210_armclk_d[] __initconst = {
>         {  0 },
>  };
>  
> +static const struct exynos_cpuclk_cfg_data e4212_armclk_d[] __initconst = {
> +       { 1500000, E4210_CPU_DIV0(2, 1, 6, 0, 7, 3), E4210_CPU_DIV1(2, 6), },
> +       { 1400000, E4210_CPU_DIV0(2, 1, 6, 0, 7, 3), E4210_CPU_DIV1(2, 6), },
> +       { 1300000, E4210_CPU_DIV0(2, 1, 5, 0, 7, 3), E4210_CPU_DIV1(2, 5), },
> +       { 1200000, E4210_CPU_DIV0(2, 1, 5, 0, 7, 3), E4210_CPU_DIV1(2, 5), },
> +       { 1100000, E4210_CPU_DIV0(2, 1, 4, 0, 6, 3), E4210_CPU_DIV1(2, 4), },
> +       { 1000000, E4210_CPU_DIV0(1, 1, 4, 0, 5, 2), E4210_CPU_DIV1(2, 4), },
> +       {  900000, E4210_CPU_DIV0(1, 1, 3, 0, 5, 2), E4210_CPU_DIV1(2, 3), },
> +       {  800000, E4210_CPU_DIV0(1, 1, 3, 0, 5, 2), E4210_CPU_DIV1(2, 3), },
> +       {  700000, E4210_CPU_DIV0(1, 1, 3, 0, 4, 2), E4210_CPU_DIV1(2, 3), },
> +       {  600000, E4210_CPU_DIV0(1, 1, 3, 0, 4, 2), E4210_CPU_DIV1(2, 3), },
> +       {  500000, E4210_CPU_DIV0(1, 1, 3, 0, 4, 2), E4210_CPU_DIV1(2, 3), },
> +       {  400000, E4210_CPU_DIV0(1, 1, 3, 0, 4, 2), E4210_CPU_DIV1(2, 3), },
> +       {  300000, E4210_CPU_DIV0(1, 1, 2, 0, 4, 2), E4210_CPU_DIV1(2, 3), },
> +       {  200000, E4210_CPU_DIV0(1, 1, 1, 0, 3, 1), E4210_CPU_DIV1(2, 3), },
> +       {  0 },
> +};
> +
> +#define E4412_CPU_DIV1(cores, hpm, copy)                               \
> +               (((cores) << 8) | ((hpm) << 4) | ((copy) << 0))
> +
> +static const struct exynos_cpuclk_cfg_data e4412_armclk_d[] __initconst = {
> +       { 1500000, E4210_CPU_DIV0(2, 1, 6, 0, 7, 3), E4412_CPU_DIV1(7, 0, 6), },
> +       { 1400000, E4210_CPU_DIV0(2, 1, 6, 0, 7, 3), E4412_CPU_DIV1(6, 0, 6), },
> +       { 1300000, E4210_CPU_DIV0(2, 1, 5, 0, 7, 3), E4412_CPU_DIV1(6, 0, 5), },
> +       { 1200000, E4210_CPU_DIV0(2, 1, 5, 0, 7, 3), E4412_CPU_DIV1(5, 0, 5), },
> +       { 1100000, E4210_CPU_DIV0(2, 1, 4, 0, 6, 3), E4412_CPU_DIV1(5, 0, 4), },
> +       { 1000000, E4210_CPU_DIV0(1, 1, 4, 0, 5, 2), E4412_CPU_DIV1(4, 0, 4), },
> +       {  900000, E4210_CPU_DIV0(1, 1, 3, 0, 5, 2), E4412_CPU_DIV1(4, 0, 3), },
> +       {  800000, E4210_CPU_DIV0(1, 1, 3, 0, 5, 2), E4412_CPU_DIV1(3, 0, 3), },
> +       {  700000, E4210_CPU_DIV0(1, 1, 3, 0, 4, 2), E4412_CPU_DIV1(3, 0, 3), },
> +       {  600000, E4210_CPU_DIV0(1, 1, 3, 0, 4, 2), E4412_CPU_DIV1(2, 0, 3), },
> +       {  500000, E4210_CPU_DIV0(1, 1, 3, 0, 4, 2), E4412_CPU_DIV1(2, 0, 3), },
> +       {  400000, E4210_CPU_DIV0(1, 1, 3, 0, 4, 2), E4412_CPU_DIV1(1, 0, 3), },
> +       {  300000, E4210_CPU_DIV0(1, 1, 2, 0, 4, 2), E4412_CPU_DIV1(1, 0, 3), },
> +       {  200000, E4210_CPU_DIV0(1, 1, 1, 0, 3, 1), E4412_CPU_DIV1(0, 0, 3), },
> +       {  0 },
> +};
> +
>  /* register exynos4 clocks */
>  static void __init exynos4_clk_init(struct device_node *np,
>                                     enum exynos4_soc soc)
> @@ -1491,6 +1530,17 @@ static void __init exynos4_clk_init(struct device_node *np,
>                 samsung_clk_register_fixed_factor(ctx,
>                         exynos4x12_fixed_factor_clks,
>                         ARRAY_SIZE(exynos4x12_fixed_factor_clks));
> +               if (of_machine_is_compatible("samsung,exynos4412")) {
> +                       exynos_register_cpu_clock(ctx, CLK_ARM_CLK, "armclk",
> +                               mout_core_p4x12[0], mout_core_p4x12[1], 0x14200,
> +                               e4412_armclk_d, ARRAY_SIZE(e4412_armclk_d),
> +                               CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1);
> +               } else {
> +                       exynos_register_cpu_clock(ctx, CLK_ARM_CLK, "armclk",
> +                               mout_core_p4x12[0], mout_core_p4x12[1], 0x14200,
> +                               e4212_armclk_d, ARRAY_SIZE(e4212_armclk_d),
> +                               CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1);
> +               }
>         }
>  
>         samsung_clk_register_alias(ctx, exynos4_aliases,
> -- 
> 1.9.1
> 
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