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authorDave Airlie <airlied@redhat.com>2019-02-20 12:16:30 +1000
committerDave Airlie <airlied@redhat.com>2019-02-20 12:16:37 +1000
commita5f2fafece141ef3509e686cea576366d55cabb6 (patch)
tree453bc6c5d7caf8d647a2cd6ce6d4658ed0a21987 /Documentation/devicetree/bindings
parentMerge branch 'linux-5.1' of git://github.com/skeggsb/linux into drm-next (diff)
parentdrm/msm: Truncate the buffer object name if the copy from user failed (diff)
downloadlinux-dev-a5f2fafece141ef3509e686cea576366d55cabb6.tar.xz
linux-dev-a5f2fafece141ef3509e686cea576366d55cabb6.zip
Merge https://gitlab.freedesktop.org/drm/msm into drm-next
On the display side, cleanups and fixes to enabled modifiers (QCOM_COMPRESSED). And otherwise mostly misc fixes all around. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Rob Clark <robdclark@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGuZ5uBKpf=fHvKpTiD10nychuEY8rnE+HeRz0QMvtY5_A@mail.gmail.com
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r--Documentation/devicetree/bindings/display/msm/gmu.txt59
-rw-r--r--Documentation/devicetree/bindings/display/msm/gpu.txt42
2 files changed, 98 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/display/msm/gmu.txt b/Documentation/devicetree/bindings/display/msm/gmu.txt
new file mode 100644
index 000000000000..3439b38e60f2
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/msm/gmu.txt
@@ -0,0 +1,59 @@
+Qualcomm adreno/snapdragon GMU (Graphics management unit)
+
+The GMU is a programmable power controller for the GPU. the CPU controls the
+GMU which in turn handles power controls for the GPU.
+
+Required properties:
+- compatible: "qcom,adreno-gmu-XYZ.W", "qcom,adreno-gmu"
+ for example: "qcom,adreno-gmu-630.2", "qcom,adreno-gmu"
+ Note that you need to list the less specific "qcom,adreno-gmu"
+ for generic matches and the more specific identifier to identify
+ the specific device.
+- reg: Physical base address and length of the GMU registers.
+- reg-names: Matching names for the register regions
+ * "gmu"
+ * "gmu_pdc"
+ * "gmu_pdc_seg"
+- interrupts: The interrupt signals from the GMU.
+- interrupt-names: Matching names for the interrupts
+ * "hfi"
+ * "gmu"
+- clocks: phandles to the device clocks
+- clock-names: Matching names for the clocks
+ * "gmu"
+ * "cxo"
+ * "axi"
+ * "mnoc"
+- power-domains: should be <&clock_gpucc GPU_CX_GDSC>
+- iommus: phandle to the adreno iommu
+- operating-points-v2: phandle to the OPP operating points
+
+Example:
+
+/ {
+ ...
+
+ gmu: gmu@506a000 {
+ compatible="qcom,adreno-gmu-630.2", "qcom,adreno-gmu";
+
+ reg = <0x506a000 0x30000>,
+ <0xb280000 0x10000>,
+ <0xb480000 0x10000>;
+ reg-names = "gmu", "gmu_pdc", "gmu_pdc_seq";
+
+ interrupts = <GIC_SPI 304 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "hfi", "gmu";
+
+ clocks = <&gpucc GPU_CC_CX_GMU_CLK>,
+ <&gpucc GPU_CC_CXO_CLK>,
+ <&gcc GCC_DDRSS_GPU_AXI_CLK>,
+ <&gcc GCC_GPU_MEMNOC_GFX_CLK>;
+ clock-names = "gmu", "cxo", "axi", "memnoc";
+
+ power-domains = <&gpucc GPU_CX_GDSC>;
+ iommus = <&adreno_smmu 5>;
+
+ operating-points-v2 = <&gmu_opp_table>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/display/msm/gpu.txt b/Documentation/devicetree/bindings/display/msm/gpu.txt
index f8759145ce1a..aad1aef682f7 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.txt
+++ b/Documentation/devicetree/bindings/display/msm/gpu.txt
@@ -10,14 +10,23 @@ Required properties:
If "amd,imageon" is used, there should be no top level msm device.
- reg: Physical base address and length of the controller's registers.
- interrupts: The interrupt signal from the gpu.
-- clocks: device clocks
+- clocks: device clocks (if applicable)
See ../clocks/clock-bindings.txt for details.
-- clock-names: the following clocks are required:
+- clock-names: the following clocks are required by a3xx, a4xx and a5xx
+ cores:
* "core"
* "iface"
* "mem_iface"
+ For GMU attached devices the GPU clocks are not used and are not required. The
+ following devices should not list clocks:
+ - qcom,adreno-630.2
+- iommus: optional phandle to an adreno iommu instance
+- operating-points-v2: optional phandle to the OPP operating points
+- qcom,gmu: For GMU attached devices a phandle to the GMU device that will
+ control the power for the GPU. Applicable targets:
+ - qcom,adreno-630.2
-Example:
+Example 3xx/4xx/a5xx:
/ {
...
@@ -37,3 +46,30 @@ Example:
<&mmcc MMSS_IMEM_AHB_CLK>;
};
};
+
+Example a6xx (with GMU):
+
+/ {
+ ...
+
+ gpu@5000000 {
+ compatible = "qcom,adreno-630.2", "qcom,adreno";
+ #stream-id-cells = <16>;
+
+ reg = <0x5000000 0x40000>, <0x509e000 0x10>;
+ reg-names = "kgsl_3d0_reg_memory", "cx_mem";
+
+ /*
+ * Look ma, no clocks! The GPU clocks and power are
+ * controlled entirely by the GMU
+ */
+
+ interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>;
+
+ iommus = <&adreno_smmu 0>;
+
+ operating-points-v2 = <&gpu_opp_table>;
+
+ qcom,gmu = <&gmu>;
+ };
+};