diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2469-drm-amd-display-disable-dcn20-abm-feature-for-bring-.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2469-drm-amd-display-disable-dcn20-abm-feature-for-bring-.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2469-drm-amd-display-disable-dcn20-abm-feature-for-bring-.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2469-drm-amd-display-disable-dcn20-abm-feature-for-bring-.patch new file mode 100644 index 00000000..771256b9 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2469-drm-amd-display-disable-dcn20-abm-feature-for-bring-.patch @@ -0,0 +1,51 @@ +From 4f834082b678441672665a5d966d623898649583 Mon Sep 17 00:00:00 2001 +From: hersen wu <hersenxs.wu@amd.com> +Date: Thu, 28 Feb 2019 16:35:24 -0500 +Subject: [PATCH 2469/2940] drm/amd/display: disable dcn20 abm feature for + bring up + +[WHY] dcn20 enable usb-c dp ALT mode in dmcu. There is bug +when enable abm feature which cause system crash. dal team +will debug this bug later. + +[HOW] disable dcn abm feature for dcn20. + +Signed-off-by: hersen wu <hersenxs.wu@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 11 +++++++---- + 1 file changed, 7 insertions(+), 4 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +index 980d03046d69..46a02b945a4d 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -779,7 +779,7 @@ static int dm_late_init(void *handle) + unsigned int linear_lut[16]; + int i; + struct dmcu *dmcu = adev->dm.dc->res_pool->dmcu; +- bool ret; ++ bool ret = false; + + for (i = 0; i < 16; i++) + linear_lut[i] = 0xFFFF * i / 15; +@@ -790,10 +790,13 @@ static int dm_late_init(void *handle) + params.backlight_lut_array_size = 16; + params.backlight_lut_array = linear_lut; + +- ret = dmcu_load_iram(dmcu, params); ++ /* todo will enable for navi10 */ ++ if (adev->asic_type <= CHIP_RAVEN) { ++ ret = dmcu_load_iram(dmcu, params); + +- if (!ret) +- return -EINVAL; ++ if (!ret) ++ return -EINVAL; ++ } + + return detect_mst_link_for_all_connectors(adev->ddev); + } +-- +2.17.1 + |