Re: [PATCH v4 4/9] clk: samsung: exynos4: Add divider clock id for memory bus frequency

From: Sylwester Nawrocki
Date: Tue Jan 20 2015 - 09:17:29 EST


On 15/01/15 02:50, Chanwoo Choi wrote:
> This patch adds the divider clock id for Exynos4 memory bus frequency.
> The clock id is used fo DVFS (Dynamic Voltage/Frequency Scaling)
> feature of exynos memory bus frequency.
>
> Cc: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
> Cc: Tomasz Figa <tomasz.figa@xxxxxxxxx>
> Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>

I've queued this patch for the clk tree, please let me know if a topic
branch is needed.

--
Thanks,
Sylwester

> drivers/clk/samsung/clk-exynos4.c | 10 +++++-----
> include/dt-bindings/clock/exynos4.h | 7 ++++++-
> 2 files changed, 11 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/clk/samsung/clk-exynos4.c
b/drivers/clk/samsung/clk-exynos4.c
> index 88e8c6b..51462e8 100644
> --- a/drivers/clk/samsung/clk-exynos4.c
> +++ b/drivers/clk/samsung/clk-exynos4.c
> @@ -703,12 +703,12 @@ static struct samsung_mux_clock exynos4x12_mux_clks[]
__initdata = {
>
> /* list of divider clocks supported in all exynos4 soc's */
> static struct samsung_div_clock exynos4_div_clks[] __initdata = {
> - DIV(0, "div_gdl", "mout_gdl", DIV_LEFTBUS, 0, 3),
> + DIV(CLK_DIV_GDL, "div_gdl", "mout_gdl", DIV_LEFTBUS, 0, 3),
> DIV(0, "div_gpl", "div_gdl", DIV_LEFTBUS, 4, 3),
> DIV(0, "div_clkout_leftbus", "mout_clkout_leftbus",
> CLKOUT_CMU_LEFTBUS, 8, 6),
>
> - DIV(0, "div_gdr", "mout_gdr", DIV_RIGHTBUS, 0, 3),
> + DIV(CLK_DIV_GDR, "div_gdr", "mout_gdr", DIV_RIGHTBUS, 0, 3),
> DIV(0, "div_gpr", "div_gdr", DIV_RIGHTBUS, 4, 3),
> DIV(0, "div_clkout_rightbus", "mout_clkout_rightbus",
> CLKOUT_CMU_RIGHTBUS, 8, 6),
> @@ -781,10 +781,10 @@ static struct samsung_div_clock exynos4_div_clks[]
__initdata = {
> CLK_SET_RATE_PARENT, 0),
> DIV(0, "div_clkout_top", "mout_clkout_top", CLKOUT_CMU_TOP, 8, 6),
>
> - DIV(0, "div_acp", "mout_dmc_bus", DIV_DMC0, 0, 3),
> + DIV(CLK_DIV_ACP, "div_acp", "mout_dmc_bus", DIV_DMC0, 0, 3),
> DIV(0, "div_acp_pclk", "div_acp", DIV_DMC0, 4, 3),
> DIV(0, "div_dphy", "mout_dphy", DIV_DMC0, 8, 3),
> - DIV(0, "div_dmc", "mout_dmc_bus", DIV_DMC0, 12, 3),
> + DIV(CLK_DIV_DMC, "div_dmc", "mout_dmc_bus", DIV_DMC0, 12, 3),
> DIV(0, "div_dmcd", "div_dmc", DIV_DMC0, 16, 3),
> DIV(0, "div_dmcp", "div_dmcd", DIV_DMC0, 20, 3),
> DIV(0, "div_pwi", "mout_pwi", DIV_DMC1, 8, 4),
> @@ -829,7 +829,7 @@ static struct samsung_div_clock exynos4x12_div_clks[]
__initdata = {
> DIV_F(CLK_DIV_MCUISP1, "div_mcuisp1", "div_mcuisp0", E4X12_DIV_ISP1,
> 8, 3, CLK_GET_RATE_NOCACHE, 0),
> DIV(CLK_SCLK_FIMG2D, "sclk_fimg2d", "mout_g2d", DIV_DMC1, 0, 4),
> - DIV(0, "div_c2c", "mout_c2c", DIV_DMC1, 4, 3),
> + DIV(CLK_DIV_C2C, "div_c2c", "mout_c2c", DIV_DMC1, 4, 3),
> DIV(0, "div_c2c_aclk", "div_c2c", DIV_DMC1, 12, 3),
> };
>
> diff --git a/include/dt-bindings/clock/exynos4.h
b/include/dt-bindings/clock/exynos4.h
> index 34fe28c..c4b1676 100644
> --- a/include/dt-bindings/clock/exynos4.h
> +++ b/include/dt-bindings/clock/exynos4.h
> @@ -262,8 +262,13 @@
> #define CLK_DIV_MCUISP1 453 /* Exynos4x12 only */
> #define CLK_DIV_ACLK200 454 /* Exynos4x12 only */
> #define CLK_DIV_ACLK400_MCUISP 455 /* Exynos4x12 only */
> +#define CLK_DIV_ACP 456
> +#define CLK_DIV_DMC 457
> +#define CLK_DIV_C2C 458 /* Exynos4x12 only */
> +#define CLK_DIV_GDL 459
> +#define CLK_DIV_GDR 460
>
> /* must be greater than maximal clock id */
> -#define CLK_NR_CLKS 456
> +#define CLK_NR_CLKS 461
>
> #endif /* _DT_BINDINGS_CLOCK_EXYNOS_4_H */
> -- 1.8.5.5
--
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