Hi Philipp:
On 2014年12月03日 02:23, Philipp Zabel wrote:
Hi Andy,
Am Dienstag, den 02.12.2014, 15:42 +0800 schrieb Andy Yan:
diff --git a/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt b/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt
new file mode 100644
index 0000000..107c1ca
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/bridge/dw_hdmi.txt
@@ -0,0 +1,40 @@
+DesignWare HDMI bridge bindings
+
+Required properities:
+- compatible: platform specific such as:
+ * "fsl,imx6q-hdmi"
+ * "fsl,imx6dl-hdmi"
+ * "rockchip,rk3288-dw-hdmi"
I think we should add a common compatible value "snps,dw-hdmi-tx" here:
compatible = "fsl,imx6q-hdmi", "snps,dw-hdmi-tx";
How about "snps,dw-hdmi", because the driver is not only about
hdmi tx, but also include hdmi phy.
If we add such compatible value, do we have to implement another
platform driver like dw_hdmi-pltfm.c with the
compatible="snps,dw-hdmi" ,
or just include the compatible value in dw_hdmi-imx.c and
dw_hdmi-rockchip.c?
+- reg: Physical base address and length of the controller's registers.
+- ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
Better make ddc-i2c-bus optional, see the other thread about the ddc i2c
master.
+- interrupts: The HDMI interrupt number
+
+Optional properties
+- reg-io-width: the width of the reg:1,4, default set to 1 if not present
+
+Example:
+ hdmi: hdmi@0120000 {
+ compatible = "fsl,imx6q-hdmi";
+ reg = <0x00120000 0x9000>;
+ interrupts = <0 115 0x04>;
+ gpr = <&gpr>;
+ clocks = <&clks 123>, <&clks 124>;
+ clock-names = "iahb", "isfr";
+ ddc-i2c-bus = <&i2c2>;
+
+ port@0 {
+ reg = <0>;
+
+ hdmi_mux_0: endpoint {
+ remote-endpoint = <&ipu1_di0_hdmi>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ hdmi_mux_1: endpoint {
+ remote-endpoint = <&ipu1_di1_hdmi>;
+ };
+ };
+ };
regards
Philipp
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