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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/Documentation/devicetree/bindings/display/msm/gpu.txt
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/Documentation/devicetree/bindings/display/msm/gpu.txt')
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diff --git a/kernel/Documentation/devicetree/bindings/display/msm/gpu.txt b/kernel/Documentation/devicetree/bindings/display/msm/gpu.txt
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+++ b/kernel/Documentation/devicetree/bindings/display/msm/gpu.txt
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+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>;
+ };
+ };
+ };
+};