diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4999-drm-amd-display-allow-diags-to-skip-initial-link-tra.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4999-drm-amd-display-allow-diags-to-skip-initial-link-tra.patch | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4999-drm-amd-display-allow-diags-to-skip-initial-link-tra.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4999-drm-amd-display-allow-diags-to-skip-initial-link-tra.patch new file mode 100644 index 00000000..c7344913 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4999-drm-amd-display-allow-diags-to-skip-initial-link-tra.patch @@ -0,0 +1,94 @@ +From 5a3bf4ea4dca71cbba53b68925519a2f6f1f79cb Mon Sep 17 00:00:00 2001 +From: Tony Cheng <tony.cheng@amd.com> +Date: Wed, 11 Jul 2018 15:31:24 -0400 +Subject: [PATCH 4999/5725] drm/amd/display: allow diags to skip initial link + training + +[why] +diag specify what the full config and is only concerned about pass/fail at the end + +having inter-op code like verifiying we can actually train at reported link rate +slows down diag test and add complexity we don't need + +[how] +add dc_debug option to skip capability link trianing + +also remove hbr in function name as verify is not specific to hbr + +Signed-off-by: Tony Cheng <tony.cheng@amd.com> +Reviewed-by: Ken Chalmers <ken.chalmers@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.c | 2 +- + drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 7 ++++++- + drivers/gpu/drm/amd/display/dc/dc.h | 1 + + drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h | 2 +- + 4 files changed, 9 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +index a621467..838231e 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +@@ -760,7 +760,7 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason) + */ + + /* deal with non-mst cases */ +- dp_hbr_verify_link_cap(link, &link->reported_link_cap); ++ dp_verify_link_cap(link, &link->reported_link_cap); + } + + /* HDMI-DVI Dongle */ +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 b34a694..bd40831 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 +@@ -1086,7 +1086,7 @@ static struct dc_link_settings get_max_link_cap(struct dc_link *link) + return max_link_cap; + } + +-bool dp_hbr_verify_link_cap( ++bool dp_verify_link_cap( + struct dc_link *link, + struct dc_link_settings *known_limit_link_setting) + { +@@ -1101,6 +1101,11 @@ bool dp_hbr_verify_link_cap( + enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_EXTERNAL; + enum link_training_result status; + ++ if (link->dc->debug.skip_detection_link_training) { ++ link->verified_link_cap = *known_limit_link_setting; ++ return true; ++ } ++ + success = false; + skip_link_training = false; + +diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h +index cddc34f..7503dcf 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc.h ++++ b/drivers/gpu/drm/amd/display/dc/dc.h +@@ -259,6 +259,7 @@ struct dc_debug { + bool avoid_vbios_exec_table; + bool scl_reset_length10; + bool hdmi20_disable; ++ bool skip_detection_link_training; + + struct { + uint32_t ltFailCount; +diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h +index 2f783c6..697b5ee 100644 +--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h ++++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h +@@ -33,7 +33,7 @@ struct dc_link; + struct dc_stream_state; + struct dc_link_settings; + +-bool dp_hbr_verify_link_cap( ++bool dp_verify_link_cap( + struct dc_link *link, + struct dc_link_settings *known_limit_link_setting); + +-- +2.7.4 + |