| Message ID | 1370862062-16680-3-git-send-email-rahul.sharma@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
+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 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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),
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(-)