Re: [PATCH v2 2/4] dt-bindings: Add a binding for Mediatek MDP
From: Rob Herring <hidden>
Date: 2016-07-26 18:54:42
Also in:
linux-arm-kernel, linux-media, linux-mediatek, lkml
On Fri, Jul 22, 2016 at 04:33:01PM +0800, Minghsiu Tsai wrote:
quoted hunk ↗ jump to hunk
Add a DT binding documentation of MDP for the MT8173 SoC from Mediatek Signed-off-by: Minghsiu Tsai <minghsiu.tsai-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> --- .../devicetree/bindings/media/mediatek-mdp.txt | 96 ++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/mediatek-mdp.txtdiff --git a/Documentation/devicetree/bindings/media/mediatek-mdp.txt b/Documentation/devicetree/bindings/media/mediatek-mdp.txt new file mode 100644 index 0000000..2dad031 --- /dev/null +++ b/Documentation/devicetree/bindings/media/mediatek-mdp.txt@@ -0,0 +1,96 @@ +* Mediatek Media Data Path + +Media Data Path is used for scaling and color space conversion. + +Required properties (all function blocks): +- compatible: "mediatek,<chip>-mdp"
What is this, ...
+ "mediatek,<chip>-mdp-<function>", one of
and this?
+ "mediatek,<chip>-mdp-rdma" - read DMA + "mediatek,<chip>-mdp-rsz" - resizer + "mediatek,<chip>-mdp-wdma" - write DMA + "mediatek,<chip>-mdp-wrot" - write DMA with rotation
List what are valid values of <chip>.
+- reg: Physical base address and length of the function block register space +- clocks: device clocks +- power-domains: a phandle to the power domain. +- mediatek,vpu: the node of video processor unit + +Required properties (DMA function blocks): +- compatible: Should be one of + "mediatek,<chip>-mdp-rdma" + "mediatek,<chip>-mdp-wdma" + "mediatek,<chip>-mdp-wrot" +- iommus: should point to the respective IOMMU block with master port as + argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt + for details. +- mediatek,larb: must contain the local arbiters in the current Socs.
It is still not clear which properties apply to which compatible strings.
+
+Example:
+ mdp_rdma0: rdma@14001000 {
+ compatible = "mediatek,mt8173-mdp-rdma",
+ "mediatek,mt8173-mdp";
+ reg = <0 0x14001000 0 0x1000>;
+ clocks = <&mmsys CLK_MM_MDP_RDMA0>,
+ <&mmsys CLK_MM_MUTEX_32K>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ iommus = <&iommu M4U_PORT_MDP_RDMA0>;
+ mediatek,larb = <&larb0>;
+ mediatek,vpu = <&vpu>;
+ };
+
+ mdp_rdma1: rdma@14002000 {
+ compatible = "mediatek,mt8173-mdp-rdma";
+ reg = <0 0x14002000 0 0x1000>;
+ clocks = <&mmsys CLK_MM_MDP_RDMA1>,
+ <&mmsys CLK_MM_MUTEX_32K>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ iommus = <&iommu M4U_PORT_MDP_RDMA1>;
+ mediatek,larb = <&larb4>;
+ };
+
+ mdp_rsz0: rsz@14003000 {
+ compatible = "mediatek,mt8173-mdp-rsz";
+ reg = <0 0x14003000 0 0x1000>;
+ clocks = <&mmsys CLK_MM_MDP_RSZ0>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ };
+
+ mdp_rsz1: rsz@14004000 {
+ compatible = "mediatek,mt8173-mdp-rsz";
+ reg = <0 0x14004000 0 0x1000>;
+ clocks = <&mmsys CLK_MM_MDP_RSZ1>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ };
+
+ mdp_rsz2: rsz@14005000 {
+ compatible = "mediatek,mt8173-mdp-rsz";
+ reg = <0 0x14005000 0 0x1000>;
+ clocks = <&mmsys CLK_MM_MDP_RSZ2>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ };
+
+ mdp_wdma0: wdma@14006000 {
+ compatible = "mediatek,mt8173-mdp-wdma";
+ reg = <0 0x14006000 0 0x1000>;
+ clocks = <&mmsys CLK_MM_MDP_WDMA>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ iommus = <&iommu M4U_PORT_MDP_WDMA>;
+ mediatek,larb = <&larb0>;
+ };
+
+ mdp_wrot0: wrot@14007000 {
+ compatible = "mediatek,mt8173-mdp-wrot";
+ reg = <0 0x14007000 0 0x1000>;
+ clocks = <&mmsys CLK_MM_MDP_WROT0>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ iommus = <&iommu M4U_PORT_MDP_WROT0>;
+ mediatek,larb = <&larb0>;
+ };
+
+ mdp_wrot1: wrot@14008000 {
+ compatible = "mediatek,mt8173-mdp-wrot";
+ reg = <0 0x14008000 0 0x1000>;
+ clocks = <&mmsys CLK_MM_MDP_WROT1>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ iommus = <&iommu M4U_PORT_MDP_WROT1>;
+ mediatek,larb = <&larb4>;
+ };
--
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