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Date: Thu, 15 Oct 2015 10:37:19 +0900
From: Krzysztof Kozlowski <k.kozlowski@...sung.com>
To: Tomeu Vizoso <tomeu.vizoso@...labora.com>,
linux-kernel@...r.kernel.org
Cc: Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
Javier Martinez Canillas <javier@....samsung.com>,
Seung-Woo Kim <sw0312.kim@...sung.com>,
Kukjin Kim <kgene@...nel.org>, Inki Dae <inki.dae@...sung.com>,
Kyungmin Park <kyungmin.park@...sung.com>,
Joonyoung Shim <jy0922.shim@...sung.com>,
devicetree@...r.kernel.org,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...eaurora.org>,
Kumar Gala <galak@...eaurora.org>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
linux-samsung-soc@...r.kernel.org,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Pawel Moll <pawel.moll@....com>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Tomasz Figa <tomasz.figa@...il.com>, linux-clk@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v1 1/2] clk: samsung: exynos5250: Add DISP1 clocks
On 14.10.2015 19:44, Tomeu Vizoso wrote:
> When the DISP1 power domain is powered off, there's two clocks that need
> to be temporarily reparented to OSC, and back to their original parents
> when the domain is powered on again.
>
> We expose these two clocks in the DT bindings so that the DT node of the
> power domain can reference them.
>
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
> ---
>
> drivers/clk/samsung/clk-exynos5250.c | 16 +++++++++++++++-
> include/dt-bindings/clock/exynos5250.h | 4 +++-
> 2 files changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c
> index 55b83c7ef878..918e40fa6aa1 100644
> --- a/drivers/clk/samsung/clk-exynos5250.c
> +++ b/drivers/clk/samsung/clk-exynos5250.c
> @@ -222,9 +222,14 @@ PNAME(mout_mpll_user_p) = { "fin_pll", "mout_mpll" };
> PNAME(mout_bpll_user_p) = { "fin_pll", "mout_bpll" };
> PNAME(mout_aclk166_p) = { "mout_cpll", "mout_mpll_user" };
> PNAME(mout_aclk200_p) = { "mout_mpll_user", "mout_bpll_user" };
> +PNAME(mout_aclk300_p) = { "mout_aclk300_disp1_mid",
> + "mout_aclk300_disp1_mid1" };
> PNAME(mout_aclk400_p) = { "mout_aclk400_g3d_mid", "mout_gpll" };
> PNAME(mout_aclk200_sub_p) = { "fin_pll", "div_aclk200" };
> PNAME(mout_aclk266_sub_p) = { "fin_pll", "div_aclk266" };
> +PNAME(mout_aclk300_sub_p) = { "fin_pll", "div_aclk300" };
> +PNAME(mout_aclk300_disp1_mid_p) = { "mout_mpll_user", "mout_bpll_user" };
There is no need for that, just use existing mout_aclk200_p.
> +PNAME(mout_aclk300_disp1_mid1_p) = { "mout_vpll", "mout_cpll" };
> PNAME(mout_aclk333_sub_p) = { "fin_pll", "div_aclk333" };
> PNAME(mout_aclk400_isp_sub_p) = { "fin_pll", "div_aclk400_isp" };
> PNAME(mout_hdmi_p) = { "div_hdmi_pixel", "sclk_hdmiphy" };
> @@ -303,9 +308,14 @@ static struct samsung_mux_clock exynos5250_mux_clks[] __initdata = {
> */
> MUX(0, "mout_aclk166", mout_aclk166_p, SRC_TOP0, 8, 1),
> MUX(0, "mout_aclk200", mout_aclk200_p, SRC_TOP0, 12, 1),
> + MUX(0, "mout_aclk300_disp1_mid", mout_aclk300_disp1_mid_p, SRC_TOP0,
> + 14, 1),
> + MUX(0, "mout_aclk300", mout_aclk300_p, SRC_TOP0, 15, 1),
> MUX(0, "mout_aclk333", mout_aclk166_p, SRC_TOP0, 16, 1),
> MUX(0, "mout_aclk400_g3d_mid", mout_aclk200_p, SRC_TOP0, 20, 1),
>
> + MUX(0, "mout_aclk300_disp1_mid1", mout_aclk300_disp1_mid1_p, SRC_TOP1,
> + 8, 1),
> MUX(0, "mout_aclk400_isp", mout_aclk200_p, SRC_TOP1, 24, 1),
> MUX(0, "mout_aclk400_g3d", mout_aclk400_p, SRC_TOP1, 28, 1),
>
> @@ -316,7 +326,10 @@ static struct samsung_mux_clock exynos5250_mux_clks[] __initdata = {
> MUX(0, "mout_bpll_user", mout_bpll_user_p, SRC_TOP2, 24, 1),
> MUX(CLK_MOUT_GPLL, "mout_gpll", mout_gpll_p, SRC_TOP2, 28, 1),
>
> - MUX(0, "mout_aclk200_disp1_sub", mout_aclk200_sub_p, SRC_TOP3, 4, 1),
> + MUX(CLK_MOUT_ACLK200_DISP1_SUB, "mout_aclk200_disp1_sub",
> + mout_aclk200_sub_p, SRC_TOP3, 4, 1),
> + MUX(CLK_MOUT_ACLK300_DISP1_SUB, "mout_aclk300_disp1_sub",
> + mout_aclk300_sub_p, SRC_TOP3, 6, 1),
> MUX(0, "mout_aclk266_gscl_sub", mout_aclk266_sub_p, SRC_TOP3, 8, 1),
> MUX(0, "mout_aclk_266_isp_sub", mout_aclk266_sub_p, SRC_TOP3, 16, 1),
> MUX(0, "mout_aclk_400_isp_sub", mout_aclk400_isp_sub_p,
> @@ -392,6 +405,7 @@ static struct samsung_div_clock exynos5250_div_clks[] __initdata = {
> DIV(0, "div_aclk333", "mout_aclk333", DIV_TOP0, 20, 3),
> DIV(0, "div_aclk400_g3d", "mout_aclk400_g3d", DIV_TOP0,
> 24, 3),
> + DIV(0, "div_aclk300", "mout_aclk300", DIV_TOP0, 28, 3),
Maybe use name "div_aclk300_disp"? There is similar clock for GSCALER,
so the div_aclk300 would be too generic.
Best regards,
Krzysztof
>
> DIV(0, "div_aclk400_isp", "mout_aclk400_isp", DIV_TOP1, 20, 3),
> DIV(0, "div_aclk66_pre", "mout_mpll_user", DIV_TOP1, 24, 3),
> diff --git a/include/dt-bindings/clock/exynos5250.h b/include/dt-bindings/clock/exynos5250.h
> index 8183d1c237d9..15508adcdfde 100644
> --- a/include/dt-bindings/clock/exynos5250.h
> +++ b/include/dt-bindings/clock/exynos5250.h
> @@ -173,8 +173,10 @@
> /* mux clocks */
> #define CLK_MOUT_HDMI 1024
> #define CLK_MOUT_GPLL 1025
> +#define CLK_MOUT_ACLK200_DISP1_SUB 1026
> +#define CLK_MOUT_ACLK300_DISP1_SUB 1027
>
> /* must be greater than maximal clock id */
> -#define CLK_NR_CLKS 1026
> +#define CLK_NR_CLKS 1028
>
> #endif /* _DT_BINDINGS_CLOCK_EXYNOS_5250_H */
>
--
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