Messages in this thread Patch in this message | | | From | Kai-Heng Feng <> | Subject | [PATCH] drm/i915/lspcon: Limits to 8 bpc for RGB/YCbCr444 | Date | Wed, 26 Aug 2020 13:21:15 +0800 |
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LSPCON only supports 8 bpc for RGB/YCbCr444.
Set the correct bpp otherwise it renders blank screen.
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2195 Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> --- drivers/gpu/drm/i915/display/intel_lspcon.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c index b781bf469644..c7a44fcaade8 100644 --- a/drivers/gpu/drm/i915/display/intel_lspcon.c +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c @@ -196,7 +196,8 @@ void lspcon_ycbcr420_config(struct drm_connector *connector, crtc_state->port_clock /= 2; crtc_state->output_format = INTEL_OUTPUT_FORMAT_YCBCR444; crtc_state->lspcon_downsampling = true; - } + } else + crtc_state->pipe_bpp = 24; } static bool lspcon_probe(struct intel_lspcon *lspcon) -- 2.17.1
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