From: robh@kernel.org (Rob Herring)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 2/4] dt-bindings: Add a binding for Mediatek MDP
Date: Tue, 26 Jul 2016 13:54:34 -0500 [thread overview]
Message-ID: <20160726185433.GA14609@rob-hp-laptop> (raw)
In-Reply-To: <1469176383-35210-3-git-send-email-minghsiu.tsai@mediatek.com>
On Fri, Jul 22, 2016 at 04:33:01PM +0800, Minghsiu Tsai wrote:
> Add a DT binding documentation of MDP for the MT8173 SoC
> from Mediatek
>
> Signed-off-by: Minghsiu Tsai <minghsiu.tsai@mediatek.com>
> ---
> .../devicetree/bindings/media/mediatek-mdp.txt | 96 ++++++++++++++++++++
> 1 file changed, 96 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/mediatek-mdp.txt
>
> diff --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 at 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 at 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 at 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 at 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 at 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 at 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 at 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 at 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>;
> + };
> --
> 1.7.9.5
>
next prev parent reply other threads:[~2016-07-26 18:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-22 8:32 [PATCH v2 0/4] Add MT8173 MDP Driver Minghsiu Tsai
2016-07-22 8:33 ` [PATCH v2 1/4] VPU: mediatek: Add mdp support Minghsiu Tsai
2016-07-22 8:33 ` [PATCH v2 2/4] dt-bindings: Add a binding for Mediatek MDP Minghsiu Tsai
2016-07-26 18:54 ` Rob Herring [this message]
2016-07-27 1:44 ` Minghsiu Tsai
2016-07-28 15:55 ` Rob Herring
2016-08-02 5:49 ` Minghsiu Tsai
2016-07-22 8:33 ` [PATCH v2 3/4] media: Add Mediatek MDP Driver Minghsiu Tsai
2016-07-22 8:33 ` [PATCH v2 4/4] arm64: dts: mediatek: Add MDP for MT8173 Minghsiu Tsai
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