If you want to pass the frame-buffer to the kernel, the video output is initialized by U-Boot, and kept by the kernel. The patch does not turn off the power domains or reset the peripheral if you want to support such feature.
Co-developed-by: Michael Trimarchi michael@amarulasolutions.com Signed-off-by: Michael Trimarchi michael@amarulasolutions.com Signed-off-by: Dario Binacchi dario.binacchi@amarulasolutions.com ---
drivers/video/mxsfb.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c index 45431f0a1047..06b2a2461246 100644 --- a/drivers/video/mxsfb.c +++ b/drivers/video/mxsfb.c @@ -422,7 +422,8 @@ static int mxs_video_remove(struct udevice *dev) if (priv->disp_dev) device_remove(priv->disp_dev, DM_REMOVE_NORMAL);
- mxs_remove_common(priv->reg_base, plat->base); + if (!IS_ENABLED(CONFIG_VIDEO_DT_SIMPLEFB)) + mxs_remove_common(priv->reg_base, plat->base);
return 0; } @@ -445,6 +446,10 @@ U_BOOT_DRIVER(mxs_video) = { .bind = mxs_video_bind, .probe = mxs_video_probe, .remove = mxs_video_remove, +#if !IS_ENABLED(CONFIG_VIDEO_DT_SIMPLEFB) .flags = DM_FLAG_PRE_RELOC | DM_FLAG_OS_PREPARE, +#else + .flags = DM_FLAG_PRE_RELOC | DM_FLAG_OS_PREPARE | DM_FLAG_LEAVE_PD_ON, +#endif .priv_auto = sizeof(struct mxsfb_priv), };