Thread (1 message) 1 message, 1 author, 2017-08-28
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[PATCH 14/17] ARM: dts: Add missing gpu node and binding for omap4

From: Tony Lindgren <hidden>
Date: 2017-08-28 21:19:15
Also in: linux-omap
Subsystem: drm drivers, drm drivers and misc gpu patches, open firmware and flattened device tree bindings, the rest · Maintainers: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

Possibly related (same subject, not in this thread)

On omap4 we're missing the PowerVR SGX GPU node with it's related
"ti,hwmods" property that the SoC interconnect code needs.

Note that this will only show up as a bug with "doesn't have
mpu register target base" boot errors when the legacy platform
data is removed.

Cc: Tomi Valkeinen <redacted>
Signed-off-by: Tony Lindgren <redacted>
---
 .../devicetree/bindings/gpu/ti-powervr-sgx.txt     | 34 ++++++++++++++++++++++
 arch/arm/boot/dts/omap4.dtsi                       |  7 +++++
 2 files changed, 41 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpu/ti-powervr-sgx.txt
diff --git a/Documentation/devicetree/bindings/gpu/ti-powervr-sgx.txt b/Documentation/devicetree/bindings/gpu/ti-powervr-sgx.txt
new file mode 100644
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpu/ti-powervr-sgx.txt
@@ -0,0 +1,34 @@
+Texas Instruments PowevVR SGX binding
+
+SGX can be used for graphics acceleration on Texas Instruments SoCs.
+
+Note that the SGX binding is currently only used by the SoC interconnect
+code to idle the module on init and no open source driver is available
+for SGX. Please update this documentation if that changes.
+
+Required properties:
+
+compatible: Shall be one of the following:
+	    "ti,omap4-gpu"
+
+reg: Shall contain the device instance IO range
+
+interrupts: Shall contain the device instance interrupt
+
+
+Optional properties:
+
+reg-names: Shall contain the IO range names if multiple IO
+	   ranges are used by the SoC
+
+ti,hwmods: Shall contain the TI interconnect module name if needed
+	   by the SoC
+
+
+Example:
+	gpu: gpu@56000000 {
+		compatible = "ti,omap4-gpu";
+		reg = <0x56000000 0x10000>;
+		interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
+		ti,hwmods = "gpu";
+	};
diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi
@@ -1086,6 +1086,13 @@
 			status = "disabled";
 		};
 
+		gpu: gpu@56000000 {
+			compatible = "ti,omap4-gpu";
+			reg = <0x56000000 0x10000>;
+			interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
+			ti,hwmods = "gpu";
+		};
+
 		dss: dss@58000000 {
 			compatible = "ti,omap4-dss";
 			reg = <0x58000000 0x80>;
-- 
2.14.1
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