diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4346-drm-amd-display-DP-link-validation-bug-for-YUV422.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4346-drm-amd-display-DP-link-validation-bug-for-YUV422.patch | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4346-drm-amd-display-DP-link-validation-bug-for-YUV422.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4346-drm-amd-display-DP-link-validation-bug-for-YUV422.patch new file mode 100644 index 00000000..1eb13ae4 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4346-drm-amd-display-DP-link-validation-bug-for-YUV422.patch @@ -0,0 +1,78 @@ +From ecce06487bbc9787f429050e7a366b4bf646841e Mon Sep 17 00:00:00 2001 +From: Hersen Wu <hersenxs.wu@amd.com> +Date: Wed, 11 Apr 2018 15:22:10 -0400 +Subject: [PATCH 4346/5725] drm/amd/display: DP link validation bug for YUV422 + +remove limit YUV422 color depth to 24bits which is +workaround for old ASIC + +Signed-off-by: Hersen Wu <hersenxs.wu@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 47 +++++++++++------------- + 1 file changed, 21 insertions(+), 26 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +index 7f0fdf7..cb376cf 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +@@ -1379,34 +1379,29 @@ static uint32_t bandwidth_in_kbps_from_timing( + uint32_t bits_per_channel = 0; + uint32_t kbps; + +- if (timing->pixel_encoding == PIXEL_ENCODING_YCBCR422) ++ switch (timing->display_color_depth) { ++ case COLOR_DEPTH_666: ++ bits_per_channel = 6; ++ break; ++ case COLOR_DEPTH_888: ++ bits_per_channel = 8; ++ break; ++ case COLOR_DEPTH_101010: ++ bits_per_channel = 10; ++ break; ++ case COLOR_DEPTH_121212: + bits_per_channel = 12; +- else{ +- +- switch (timing->display_color_depth) { +- +- case COLOR_DEPTH_666: +- bits_per_channel = 6; +- break; +- case COLOR_DEPTH_888: +- bits_per_channel = 8; +- break; +- case COLOR_DEPTH_101010: +- bits_per_channel = 10; +- break; +- case COLOR_DEPTH_121212: +- bits_per_channel = 12; +- break; +- case COLOR_DEPTH_141414: +- bits_per_channel = 14; +- break; +- case COLOR_DEPTH_161616: +- bits_per_channel = 16; +- break; +- default: +- break; +- } ++ break; ++ case COLOR_DEPTH_141414: ++ bits_per_channel = 14; ++ break; ++ case COLOR_DEPTH_161616: ++ bits_per_channel = 16; ++ break; ++ default: ++ break; + } ++ + ASSERT(bits_per_channel != 0); + + kbps = timing->pix_clk_khz; +-- +2.7.4 + |