Invoke the generic console emulation with a 32 bits per pixel. The
preferred color depth is 24, so the current value of 16 bpp is too
small. This results in the following error message
vc4-drm gpu: [drm] bpp/depth value of 16/24 not supported
vc4-drm gpu: [drm] No compatible format found
------------[ cut here ]------------
WARNING: CPU: 2 PID: 66 at drivers/gpu/drm/drm_atomic.c:1604 __drm_atomic_helper_set_config+0x2e8/0x314 [drm]
The problem has been present for a long, but has only now surfaced
as commit 37c90d589dc0 ("drm/fb-helper: Fix single-probe color-format
selection") attempts to improve selection of the color format.
See [1] for the initial bug report.
Reported-by: Maíra Canal <mcanal@xxxxxxxxxx>
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Tested-by: Maíra Canal <mcanal@xxxxxxxxxx>
Fixes: 37c90d589dc0 ("drm/fb-helper: Fix single-probe color-format selection")
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Javier Martinez Canillas <javierm@xxxxxxxxxx>
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Maxime Ripard <mripard@xxxxxxxxxx>
Link: https://lore.kernel.org/dri-devel/20230102112927.26565-1-tzimmermann@xxxxxxx/T/#mb09eb6f615f4b0302c78f250b4241ee48d1915f8 # 1
---
drivers/gpu/drm/vc4/vc4_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 0ccaee57fe9a..64423b79982f 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -387,7 +387,7 @@ static int vc4_drm_bind(struct device *dev)
if (ret < 0)
goto unbind_all;
- drm_fbdev_generic_setup(drm, 16);
+ drm_fbdev_generic_setup(drm, 32);
return 0;
--
2.39.0
