diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4917-drm-amd-display-Patch-for-extend-time-to-panel-power.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4917-drm-amd-display-Patch-for-extend-time-to-panel-power.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4917-drm-amd-display-Patch-for-extend-time-to-panel-power.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4917-drm-amd-display-Patch-for-extend-time-to-panel-power.patch new file mode 100644 index 00000000..97603489 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4917-drm-amd-display-Patch-for-extend-time-to-panel-power.patch @@ -0,0 +1,57 @@ +From d104c169112f1a5d885dc6a8f8a015d058d13f44 Mon Sep 17 00:00:00 2001 +From: Hugo Hu <hugo.hu@amd.com> +Date: Fri, 15 Jun 2018 15:49:55 -0400 +Subject: [PATCH 4917/5725] drm/amd/display: Patch for extend time to panel + poweron. + +[WHY] +In eDP spec, the min duration in LCDVDD on-off-on sequence should be +500ms, some BOE panels need 700ms to pass. +[HOW] +Add patch to wait more time when eDP power on. + +Signed-off-by: Hugo Hu <hugo.hu@amd.com> +Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dc_types.h | 1 + + drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 9 ++++++--- + 2 files changed, 7 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h +index 59bf0d5..58a6ef8 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc_types.h ++++ b/drivers/gpu/drm/amd/display/dc/dc_types.h +@@ -192,6 +192,7 @@ union display_content_support { + + struct dc_panel_patch { + unsigned int dppowerup_delay; ++ unsigned int extra_t12_ms; + }; + + struct dc_edid_caps { +diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +index b0bcc9a..286b6071 100644 +--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c ++++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +@@ -871,10 +871,13 @@ void hwss_edp_power_control( + unsigned long long wait_time_ms = 0; + + /* max 500ms from LCDVDD off to on */ ++ unsigned long long edp_poweroff_time_ms = ++ 500 + link->local_sink->edid_caps.panel_patch.extra_t12_ms; ++ + if (link->link_trace.time_stamp.edp_poweroff == 0) +- wait_time_ms = 500; +- else if (duration_in_ms < 500) +- wait_time_ms = 500 - duration_in_ms; ++ wait_time_ms = edp_poweroff_time_ms; ++ else if (duration_in_ms < edp_poweroff_time_ms) ++ wait_time_ms = edp_poweroff_time_ms - duration_in_ms; + + if (wait_time_ms) { + msleep(wait_time_ms); +-- +2.7.4 + |