diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3917-drm-amd-display-Allow-truncation-to-10-bits.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3917-drm-amd-display-Allow-truncation-to-10-bits.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3917-drm-amd-display-Allow-truncation-to-10-bits.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3917-drm-amd-display-Allow-truncation-to-10-bits.patch new file mode 100644 index 00000000..23e25c88 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3917-drm-amd-display-Allow-truncation-to-10-bits.patch @@ -0,0 +1,45 @@ +From e1dcb347cefe3ddf2cafbb95761adcb46b9f96bd Mon Sep 17 00:00:00 2001 +From: Mikita Lipski <mikita.lipski@amd.com> +Date: Wed, 7 Mar 2018 10:49:23 -0500 +Subject: [PATCH 3917/4131] drm/amd/display: Allow truncation to 10 bits + +The truncation isn't being programmed if the truncation +depth is set to 2, it causes an issue with dce11.2 asic +using 6bit eDP panel. It required to truncate 12:10 in order to +perform spatial dither 10:6. + +This change will allow 12:10 truncation to be enabled. + +Signed-off-by: Mikita Lipski <mikita.lipski@amd.com> +Reviewed-by: Jun Lei <Jun.Lei@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dce/dce_opp.c | 5 ++--- + 1 file changed, 2 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c b/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c +index 3931412..f19de13 100644 +--- a/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c ++++ b/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c +@@ -128,8 +128,7 @@ static void set_truncation( + return; + } + /* on other format-to do */ +- if (params->flags.TRUNCATE_ENABLED == 0 || +- params->flags.TRUNCATE_DEPTH == 2) ++ if (params->flags.TRUNCATE_ENABLED == 0) + return; + /*Set truncation depth and Enable truncation*/ + REG_UPDATE_3(FMT_BIT_DEPTH_CONTROL, +@@ -144,7 +143,7 @@ static void set_truncation( + /** + * set_spatial_dither + * 1) set spatial dithering mode: pattern of seed +- * 2) set spatical dithering depth: 0 for 18bpp or 1 for 24bpp ++ * 2) set spatial dithering depth: 0 for 18bpp or 1 for 24bpp + * 3) set random seed + * 4) set random mode + * lfsr is reset every frame or not reset +-- +2.7.4 + |