clk/exynos5250: add mout_hdmi mux clock for hdmi

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>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

diff --git a/Documentation/devicetree/bindings/clock/exynos5250-clock.txt b/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
index 2d4a7151180b628a19619e9fd12ca3649eb0ba36..76b97c92870cdbbba4955661e6c35e290c19ed03 100644 (file)
--- a/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
+++ b/Documentation/devicetree/bindings/clock/exynos5250-clock.txt
@@ -159,6 +159,14 @@ clock which they consume.
   hdmi                 344
   g2d                  345
 
+
+   [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 e6a4be16272aa7db5487d4ce9ca8bcde25d540ce..397f1ca41b9700070dd863d0b84b5effb86088a8 100644 (file)
--- a/drivers/clk/samsung/clk-exynos5250.c
+++ b/drivers/clk/samsung/clk-exynos5250.c
@@ -102,6 +102,9 @@ enum exynos5250_clks {
        tzpc2, tzpc3, tzpc4, tzpc5, tzpc6, tzpc7, tzpc8, tzpc9, hdmi_cec, mct,
        wdt, rtc, tmu, fimd1, mie1, dsim0, dp, mixer, hdmi, g2d,
 
+       /* mux clocks */
+       mout_hdmi = 1024,
+
        nr_clks,
 };
 
@@ -234,7 +237,7 @@ static 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),