Re: [PATCH 2/5] clk/exynos5250: add mout_hdmi mux clock for hdmi

[Rahul Sharma <r.sh.open@gmail.com>]

+Mike

On Mon, Jun 10, 2013 at 4:30 PM, Rahul Sharma <rahul.sharma@samsung.com> wrote:
> hdmi driver needs to change the parent of hdmi clock
> frequently between pixel clock and hdmiphy clock. hdmiphy is
> not stable after power on and for a short interval while changing
> the phy configuration. For this duration pixel clock is used to
> clock hdmi.
>
> This patch is exposing the mux for changing parent.
>
> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
> ---
>  Documentation/devicetree/bindings/clock/exynos5250-clock.txt |    8 ++++++++
>  drivers/clk/samsung/clk-exynos5250.c                         |    5 ++++-
>  2 files changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/clock/exynos5250-clock.txt b/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
> index 1a05761..b337147 100644
> --- a/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
> +++ b/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
> @@ -156,6 +156,14 @@ clock which they consume.
>    mixer                        343
>    hdmi                 344
>
> +
> +   [Clock Muxes]
> +
> +  Clock                        ID
> +  ----------------------------
> +  mout_hdmi            1024
> +
> +
>  Example 1: An example of a clock controller node is listed below.
>
>         clock: clock-controller@0x10010000 {
> diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c
> index 5c97e75..587d913 100644
> --- a/drivers/clk/samsung/clk-exynos5250.c
> +++ b/drivers/clk/samsung/clk-exynos5250.c
> @@ -100,6 +100,9 @@ enum exynos5250_clks {
>         tzpc2, tzpc3, tzpc4, tzpc5, tzpc6, tzpc7, tzpc8, tzpc9, hdmi_cec, mct,
>         wdt, rtc, tmu, fimd1, mie1, dsim0, dp, mixer, hdmi,
>
> +       /* mux clocks */
> +       mout_hdmi = 1024,
> +
>         nr_clks,
>  };
>
> @@ -231,7 +234,7 @@ struct samsung_mux_clock exynos5250_mux_clks[] __initdata = {
>         MUX(none, "mout_fimd1", mout_group1_p, SRC_DISP1_0, 0, 4),
>         MUX(none, "mout_mipi1", mout_group1_p, SRC_DISP1_0, 12, 4),
>         MUX(none, "mout_dp", mout_group1_p, SRC_DISP1_0, 16, 4),
> -       MUX(none, "mout_hdmi", mout_hdmi_p, SRC_DISP1_0, 20, 1),
> +       MUX(mout_hdmi, "mout_hdmi", mout_hdmi_p, SRC_DISP1_0, 20, 1),
>         MUX(none, "mout_audio0", mout_audio0_p, SRC_MAU, 0, 4),
>         MUX(none, "mout_mmc0", mout_group1_p, SRC_FSYS, 0, 4),
>         MUX(none, "mout_mmc1", mout_group1_p, SRC_FSYS, 4, 4),
> --
> 1.7.10.4
>
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