of/documentation: update with clock information for exynos hdmi subsystem

Adding information about clocks to the binding documentation
for exynos mixer and hdmi.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/Documentation/devicetree/bindings/video/exynos_hdmi.txt b/Documentation/devicetree/bindings/video/exynos_hdmi.txt
index 323983b..50decf8 100644 (file)
--- a/Documentation/devicetree/bindings/video/exynos_hdmi.txt
+++ b/Documentation/devicetree/bindings/video/exynos_hdmi.txt
@@ -12,7 +12,19 @@ Required properties:
        a) phandle of the gpio controller node.
        b) pin number within the gpio controller.
        c) optional flags and pull up/down.
-
+- clocks: list of clock IDs from SoC clock driver.
+       a) hdmi: Gate of HDMI IP bus clock.
+       b) sclk_hdmi: Gate of HDMI special clock.
+       c) sclk_pixel: Pixel special clock, one of the two possible inputs of
+               HDMI clock mux.
+       d) sclk_hdmiphy: HDMI PHY clock output, one of two possible inputs of
+               HDMI clock mux.
+       e) mout_hdmi: It is required by the driver to switch between the 2
+               parents i.e. sclk_pixel and sclk_hdmiphy. If hdmiphy is stable
+               after configuration, parent is set to sclk_hdmiphy else
+               sclk_pixel.
+- clock-names: aliases as per driver requirements for above clock IDs:
+       "hdmi", "sclk_hdmi", "sclk_pixel", "sclk_hdmiphy" and "mout_hdmi".
 Example:
 
        hdmi {

diff --git a/Documentation/devicetree/bindings/video/exynos_mixer.txt b/Documentation/devicetree/bindings/video/exynos_mixer.txt
index 3334b0a..7bfde9c 100644 (file)
--- a/Documentation/devicetree/bindings/video/exynos_mixer.txt
+++ b/Documentation/devicetree/bindings/video/exynos_mixer.txt
@@ -10,6 +10,10 @@ Required properties:
 - reg: physical base address of the mixer and length of memory mapped
        region.
 - interrupts: interrupt number to the cpu.
+- clocks: list of clock IDs from SoC clock driver.
+       a) mixer: Gate of Mixer IP bus clock.
+       b) sclk_hdmi: HDMI Special clock, one of the two possible inputs of
+               mixer mux.
 
 Example: