Re: [RFC 1/3] dt-bindings: soc: Add documentation for the MediaTek GCE unit
From: Rob Herring <hidden>
Date: 2016-01-20 16:38:33
Also in:
linux-arm-kernel, linux-mediatek, lkml
On Wed, Jan 20, 2016 at 01:14:38PM +0800, hs.liao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org wrote:
quoted hunk ↗ jump to hunk
From: HS Liao <hs.liao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> This adds documentation for the MediaTek Global Command Engine (GCE) unit found in MT8173 SoCs. Signed-off-by: HS Liao <hs.liao-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> --- .../devicetree/bindings/soc/mediatek/gce.txt | 33 ++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/gce.txtdiff --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.
That's a hardware limitation or just s/w is only using it for display? If the latter, that's not really relevant to this binding and should be removed.
+
+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@10212000 {
+ compatible = "mediatek,mt8173-gce";
+ reg = <0 0x10212000 0 0x1000>;
+ interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&infracfg CLK_INFRA_GCE>;
+ clock-names = "gce";
+ };
+
+ mmsys: clock-controller@14000000 {
+ compatible = "mediatek,mt8173-mmsys", "syscon";
+ reg = <0 0x14000000 0 0x1000>;
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+ #clock-cells = <1>;
+ mediatek,gce = <&gce>;Not documented.
+ }; -- 1.7.9.5
-- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html