diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4699-drm-amd-display-check-for-repeater-when-setting-aux_.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4699-drm-amd-display-check-for-repeater-when-setting-aux_.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4699-drm-amd-display-check-for-repeater-when-setting-aux_.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4699-drm-amd-display-check-for-repeater-when-setting-aux_.patch new file mode 100644 index 00000000..911c1ae4 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4699-drm-amd-display-check-for-repeater-when-setting-aux_.patch @@ -0,0 +1,43 @@ +From 7f899298da256db5ad49f3183e4a771eddc75344 Mon Sep 17 00:00:00 2001 +From: abdoulaye berthe <abdoulaye.berthe@amd.com> +Date: Tue, 12 Nov 2019 11:07:24 -0500 +Subject: [PATCH 4699/4736] drm/amd/display: check for repeater when setting + aux_rd_interval. + +[Why] +When training with repeater the aux read interval must be set to +repeater specific aux_red_interval. This value is always 100us for CR. + +[How] +Check for repeater when setting the aux_rd_interval in channel +equalization. +Use the right offset in the aux_rd_interval array + +Signed-off-by: abdoulaye berthe <abdoulaye.berthe@amd.com> +Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com> +Acked-by: George Shen <George.Shen@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 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 015fa0c52746..dfcd6421ee01 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 +@@ -906,10 +906,10 @@ static enum link_training_result perform_channel_equalization_sequence( + /* 3. wait for receiver to lock-on*/ + wait_time_microsec = lt_settings->eq_pattern_time; + +- if (!link->is_lttpr_mode_transparent) ++ if (is_repeater(link, offset)) + wait_time_microsec = + translate_training_aux_read_interval( +- link->dpcd_caps.lttpr_caps.aux_rd_interval[offset]); ++ link->dpcd_caps.lttpr_caps.aux_rd_interval[offset - 1]); + + wait_for_training_aux_rd_interval( + link, +-- +2.17.1 + |