From b4b7ff4b08e691656c9d77c758fc355833128ac0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 20 Jan 2016 14:01:31 -0300
Subject: Linux-libre 4.4-gnu

---
 .../devicetree/bindings/display/msm/gpu.txt        | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/msm/gpu.txt

(limited to 'Documentation/devicetree/bindings/display/msm/gpu.txt')

diff --git a/Documentation/devicetree/bindings/display/msm/gpu.txt b/Documentation/devicetree/bindings/display/msm/gpu.txt
new file mode 100644
index 000000000..67d0a58db
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/msm/gpu.txt
@@ -0,0 +1,52 @@
+Qualcomm adreno/snapdragon GPU
+
+Required properties:
+- compatible: "qcom,adreno-3xx"
+- reg: Physical base address and length of the controller's registers.
+- interrupts: The interrupt signal from the gpu.
+- clocks: device clocks
+  See ../clocks/clock-bindings.txt for details.
+- clock-names: the following clocks are required:
+  * "core_clk"
+  * "iface_clk"
+  * "mem_iface_clk"
+- qcom,chipid: gpu chip-id.  Note this may become optional for future
+  devices if we can reliably read the chipid from hw
+- qcom,gpu-pwrlevels: list of operating points
+  - compatible: "qcom,gpu-pwrlevels"
+  - for each qcom,gpu-pwrlevel:
+    - qcom,gpu-freq: requested gpu clock speed
+    - NOTE: downstream android driver defines additional parameters to
+      configure memory bandwidth scaling per OPP.
+
+Example:
+
+/ {
+	...
+
+	gpu: qcom,kgsl-3d0@4300000 {
+		compatible = "qcom,adreno-3xx";
+		reg = <0x04300000 0x20000>;
+		reg-names = "kgsl_3d0_reg_memory";
+		interrupts = <GIC_SPI 80 0>;
+		interrupt-names = "kgsl_3d0_irq";
+		clock-names =
+		    "core_clk",
+		    "iface_clk",
+		    "mem_iface_clk";
+		clocks =
+		    <&mmcc GFX3D_CLK>,
+		    <&mmcc GFX3D_AHB_CLK>,
+		    <&mmcc MMSS_IMEM_AHB_CLK>;
+		qcom,chipid = <0x03020100>;
+		qcom,gpu-pwrlevels {
+			compatible = "qcom,gpu-pwrlevels";
+			qcom,gpu-pwrlevel@0 {
+				qcom,gpu-freq = <450000000>;
+			};
+			qcom,gpu-pwrlevel@1 {
+				qcom,gpu-freq = <27000000>;
+			};
+		};
+	};
+};
-- 
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