Commit 0fe0fbc8 authored May 30, 2021 by Paul Cercueil Committed by Thomas Bogendoerfer Jun 01, 2021

MIPS: ingenic: rs90: Add dedicated VRAM memory region



Add a 1 MiB memory area dedicated to the video driver. This area will be
managed by Linux' CMA, so that the ingenic-drm driver can be sure to
always be able to allocate contiguous buffers.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

parent 5e82cf98

arch/mips/boot/dts/ingenic/rs90.dts

+14 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,18 @@ memory {
		reg = <0x0 0x2000000>;
		};

		reserved-memory {
		#address-cells = <1>;
		#size-cells = <1>;
		ranges;

		vmem: video-memory@1f00000 {
		compatible = "shared-dma-pool";
		reg = <0x1f00000 0x100000>;
		reusable;
		};
		};

		vcc: regulator {
		compatible = "regulator-fixed";

		@@ -300,6 +312,8 @@ &tcu {
		};

		&lcd {
		memory-region = <&vmem>;

		pinctrl-names = "default";
		pinctrl-0 = <&pins_lcd>;
		};