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| author | André Draszik <andre.draszik@linaro.org> | 2025-01-17 20:09:55 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2025-02-04 11:43:50 +0300 |
| commit | befbb62c61a5f5ef547355f2f726a0926916a12c (patch) | |
| tree | af56ee727a80a4b1c63654501d6d22a8eba6c656 | |
| parent | 2f88cffbfe61a9e257aa6d9cf03e1b9567cfc910 (diff) | |
| download | linux-befbb62c61a5f5ef547355f2f726a0926916a12c.tar.xz | |
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 <andre.draszik@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://lore.kernel.org/r/20250117-gs101-simplefb-v4-2-a5b90ca2f917@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
| -rw-r--r-- | arch/arm64/boot/dts/exynos/google/gs101-oriole.dts | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts b/arch/arm64/boot/dts/exynos/google/gs101-oriole.dts index e58881c61d53..d3dd411c9bd0 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 { |