From: André Draszik Date: Fri, 17 Jan 2025 17:09:55 +0000 (+0000) Subject: arm64: dts: exynos: gs101-oriole: configure simple-framebuffer X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=befbb62c61a5f5ef547355f2f726a0926916a12c;p=users%2Fjedix%2Flinux-maple.git arm64: dts: exynos: gs101-oriole: configure simple-framebuffer The bootloader configures the display hardware for a framebuffer at the given address, let's add a simple-framebuffer node here until we get a proper DRM driver. This has several benefits since it's an OLED display: * energy consumption goes down significantly, as it changes from white (as left by bootloader) to black (linux console), and we generally don't run out of battery anymore when plugged into a USB port * less of a burn-in effect I assume * phone stays cooler due to reduced energy consumption by display Signed-off-by: André Draszik Reviewed-by: Peter Griffin Link: https://lore.kernel.org/r/20250117-gs101-simplefb-v4-2-a5b90ca2f917@linaro.org Signed-off-by: Krzysztof Kozlowski --- diff --git a/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts b/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts index e58881c61d53e..d3dd411c9bd0c 100644 --- a/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts +++ b/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts @@ -26,6 +26,16 @@ /* Bootloader expects bootargs specified otherwise it crashes */ bootargs = ""; stdout-path = &serial_0; + + /* Use display framebuffer as setup by bootloader */ + framebuffer0: framebuffer-0 { + compatible = "simple-framebuffer"; + memory-region = <&cont_splash_mem>; + width = <1080>; + height = <2400>; + stride = <(1080 * 4)>; + format = "a8r8g8b8"; + }; }; gpio-keys { @@ -69,6 +79,13 @@ regulator-boot-on; enable-active-high; }; + + reserved-memory { + cont_splash_mem: splash@fac00000 { + reg = <0x0 0xfac00000 (1080 * 2400 * 4)>; + no-map; + }; + }; }; &ext_24_5m {