From mboxrd@z Thu Jan 1 00:00:00 1970 From: hs.liao@mediatek.com (hs.liao at mediatek.com) Date: Wed, 20 Jan 2016 13:14:38 +0800 Subject: [RFC 1/3] dt-bindings: soc: Add documentation for the MediaTek GCE unit In-Reply-To: <1453266881-16849-1-git-send-email-hs.liao@mediatek.com> References: <1453266881-16849-1-git-send-email-hs.liao@mediatek.com> Message-ID: <1453266881-16849-2-git-send-email-hs.liao@mediatek.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: HS Liao This adds documentation for the MediaTek Global Command Engine (GCE) unit found in MT8173 SoCs. Signed-off-by: HS Liao --- .../devicetree/bindings/soc/mediatek/gce.txt | 33 ++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/gce.txt diff --git a/Documentation/devicetree/bindings/soc/mediatek/gce.txt b/Documentation/devicetree/bindings/soc/mediatek/gce.txt new file mode 100644 index 0000000..878b11e --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/gce.txt @@ -0,0 +1,33 @@ +MediaTek GCE +=============== + +The Global Command Engine (GCE) is used to help read/write registers with +critical time limitation, such as updating display configuration during the +vblank. The GCE can be used to implement the Command Queue (CMDQ) driver. +Currently, the GCE only supports display related hardwares, but we expect +it can be extended to other hardwares for future requirements. + +Required properties: +- compatible: Must be "mediatek,mt8173-gce" +- reg: Address range of the GCE unit +- interrupts: The interrupt signal from the GCE block +- clock: Clocks according to the common clock binding +- clock-names: Must be "gce" to stand for GCE clock + +Example: + + gce: gce at 10212000 { + compatible = "mediatek,mt8173-gce"; + reg = <0 0x10212000 0 0x1000>; + interrupts = ; + clocks = <&infracfg CLK_INFRA_GCE>; + clock-names = "gce"; + }; + + mmsys: clock-controller at 14000000 { + compatible = "mediatek,mt8173-mmsys", "syscon"; + reg = <0 0x14000000 0 0x1000>; + power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; + #clock-cells = <1>; + mediatek,gce = <&gce>; + }; -- 1.7.9.5