On Fri, Jul 2, 2021 at 7:22 PM Stephan Gerhold stephan@gerhold.net wrote:
The U-Boot port for ST-Ericsson Ux500 is currently only used on the "stemmy" board, where U-Boot runs after firmware that already sets up a boot splash screen. This means that the display is already on and we can just continue using it for U-Boot.
Add a simple driver that simplifies this by reading the display configuration (e.g. screen size, bpp) from the hardware registers.
It also checks the configured "source synchronization" - for some displays (usually DSI command mode displays) we need to explicitly trigger a software sync. This is done through the video_sync() callback that triggers the sync and wait for completion.
Cc: Linus Walleij linus.walleij@linaro.org Signed-off-by: Stephan Gerhold stephan@gerhold.net
Reviewed-by: Linus Walleij linus.walleij@linaro.org
Yours, Linus Walleij