[PATCH linux dev-4.13 4/5] ARM: dts: ast2500-evb: Enable the GFX IP

Joel Stanley joel at jms.id.au
Thu Apr 19 14:20:03 AEST 2018


The GFX controller is the internal graphics device used by the SoC
(opposed to the one connected via the PCIe device and used by the host).

This configures it with a framebuffer region and adds it to the command
line so kernel boot messages appear on the display.

Signed-off-by: Joel Stanley <joel at jms.id.au>
---
 arch/arm/boot/dts/aspeed-ast2500-evb.dts | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/aspeed-ast2500-evb.dts b/arch/arm/boot/dts/aspeed-ast2500-evb.dts
index 45efac8f8806..c0a7f51e7eb6 100644
--- a/arch/arm/boot/dts/aspeed-ast2500-evb.dts
+++ b/arch/arm/boot/dts/aspeed-ast2500-evb.dts
@@ -13,12 +13,26 @@
 
 	chosen {
 		stdout-path = &uart5;
-		bootargs = "console=ttyS4,115200 earlyprintk";
+		bootargs = "console=tty0 console=ttyS4,115200 earlyprintk";
 	};
 
 	memory at 80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x20000000>;
 	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		gfx_memory: framebuffer {
+			size = <0x01000000>;
+			alignment = <0x01000000>;
+			compatible = "shared-dma-pool";
+			reusable;
+		};
+	};
 };
 
 &fmc {
@@ -80,3 +94,8 @@
 		reg = <0x4d>;
 	};
 };
+
+&gfx {
+     status = "okay";
+     memory-region = <&gfx_memory>;
+};
-- 
2.17.0



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