Re: [RFC/patch 2/2] arm64: boot: dts: qcom: surface duo: add minimal framebuffer

From: Felipe Balbi
Date: Sat Dec 18 2021 - 02:34:35 EST



Hi,

Alexey Minnekhanov <alexeymin@xxxxxxxxxxxxxxxx> writes:
> @@ -472,6 +483,14 @@ &pon_resin {
> linux,code = <KEY_VOLUMEDOWN>;
> };
>
> +&reserved_memory {
> + splash_region: splash_region@9c000000 {
> + /* We expect the bootloader to fill in the size */
> + reg = <0x0 0x9c000000 0x0 0x0>;
>
> 0x2400000 should be here as size, maybe?

bootloader is filling that up, but sure I only used this to get the size
and base address from bootloader. I could just hardcode the values now
that I know them :-)

>
> cont_splash_mem: memory@9c000000 {
> reg = <0x0 0x9c000000 0x0 0x2400000>;
> no-map;
> };
>
> FWIW, example above (with similar simple-framebuffer
> node) worked fine for my sm8150 based device.

Oh okay. So it's likely to be something specific to our bootloader.

--
balbi