diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4958-drm-amd-display-add-new-dc-debug-structure-to-track-.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4958-drm-amd-display-add-new-dc-debug-structure-to-track-.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4958-drm-amd-display-add-new-dc-debug-structure-to-track-.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4958-drm-amd-display-add-new-dc-debug-structure-to-track-.patch new file mode 100644 index 00000000..730da2c6 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4958-drm-amd-display-add-new-dc-debug-structure-to-track-.patch @@ -0,0 +1,54 @@ +From 4471426bb73511848e746ea72a1bfea5709b57e4 Mon Sep 17 00:00:00 2001 +From: Jun Lei <Jun.Lei@amd.com> +Date: Fri, 22 Jun 2018 16:51:47 -0400 +Subject: [PATCH 4958/5725] drm/amd/display: add new dc debug structure to + track debug data + +[why] +Some DTN tests still failing @ 2% Need to reduce. + +[how] +add instrumentation code to driver so we can get more information from failed runs. + +Signed-off-by: Jun Lei <Jun.Lei@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 3 +++ + drivers/gpu/drm/amd/display/dc/dc.h | 5 +++++ + 2 files changed, 8 insertions(+) + +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 fd73a9c..3bb75b1 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 +@@ -1028,6 +1028,9 @@ enum link_training_result dc_link_dp_perform_link_training( + lt_settings.lane_settings[0].VOLTAGE_SWING, + lt_settings.lane_settings[0].PRE_EMPHASIS); + ++ if (status != LINK_TRAINING_SUCCESS) ++ link->ctx->dc->debug.debug_data.ltFailCount++; ++ + return status; + } + +diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h +index 966e9b9..c106d58 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc.h ++++ b/drivers/gpu/drm/amd/display/dc/dc.h +@@ -260,6 +260,11 @@ struct dc_debug { + bool scl_reset_length10; + bool hdmi20_disable; + ++ struct { ++ uint32_t ltFailCount; ++ uint32_t i2cErrorCount; ++ uint32_t auxErrorCount; ++ } debug_data; + }; + struct dc_state; + struct resource_pool; +-- +2.7.4 + |