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| author | Stephan Gerhold <stephan@gerhold.net> | 2021-07-02 19:21:56 +0200 |
|---|---|---|
| committer | Anatolij Gustschin <agust@denx.de> | 2021-08-01 21:40:51 +0200 |
| commit | 21a151a79d51839ab0a08a7e2ca2ee4c9f79ab1c (patch) | |
| tree | 95d180068281654e1bca9bce1271c402f4873b97 /drivers/video/Kconfig | |
| parent | 5371593aed56ee11cbb6cc6ac8d058fcd9b8f58c (diff) | |
| download | u-boot-21a151a79d51839ab0a08a7e2ca2ee4c9f79ab1c.zip u-boot-21a151a79d51839ab0a08a7e2ca2ee4c9f79ab1c.tar.gz u-boot-21a151a79d51839ab0a08a7e2ca2ee4c9f79ab1c.tar.bz2 | |
video: Add simple driver for ST-Ericsson MCDE with pre-configured display
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>
Diffstat (limited to 'drivers/video/Kconfig')
| -rw-r--r-- | drivers/video/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index b69ffca..e614a04 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -854,6 +854,18 @@ config VIDEO_DT_SIMPLEFB The video output is initialized by U-Boot, and kept by the kernel. +config VIDEO_MCDE_SIMPLE + bool "Simple driver for ST-Ericsson MCDE with preconfigured display" + depends on DM_VIDEO + help + Enables a simple display driver for ST-Ericsson MCDE + (Multichannel Display Engine), which reads the configuration from + the MCDE registers. + + This driver assumes that the display hardware has been initialized + before u-boot starts, and u-boot will simply render to the pre- + allocated frame buffer surface. + config OSD bool "Enable OSD support" depends on DM |