diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1706-drm-amd-display-VBIOS-can-t-be-light-up-HDMI-when-re.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1706-drm-amd-display-VBIOS-can-t-be-light-up-HDMI-when-re.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1706-drm-amd-display-VBIOS-can-t-be-light-up-HDMI-when-re.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1706-drm-amd-display-VBIOS-can-t-be-light-up-HDMI-when-re.patch new file mode 100644 index 00000000..90d2fd44 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1706-drm-amd-display-VBIOS-can-t-be-light-up-HDMI-when-re.patch @@ -0,0 +1,49 @@ +From 086cb7520d173618bb738424b7eaf46e90b99594 Mon Sep 17 00:00:00 2001 +From: Paul Hsieh <paul.hsieh@amd.com> +Date: Mon, 18 Mar 2019 18:04:05 +0800 +Subject: [PATCH 1706/2940] drm/amd/display: VBIOS can't be light up HDMI when + restart system + +[Why] +VBIOS will not post pixel rate > 340MHz. +If driver set pixel rate > 340MHz and do restart bottom, VBIOS can't +post HDMI monitor due to monitor is stay in HDMI2.0 state. + +[How] +Program Scrambling_Enable and TMDS_Bit_Clock_Ratio when disable stream. + +Change-Id: I8ec15874e3382a6ae9b6d38915ba05a4df3e5bde +Signed-off-by: Paul Hsieh <paul.hsieh@amd.com> +Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +Acked-by: Harry Wentland <Harry.Wentland@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +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 42bcd27a2dd4..dd6e5f0fdf5e 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +@@ -2666,12 +2666,18 @@ void core_link_enable_stream( + void core_link_disable_stream(struct pipe_ctx *pipe_ctx, int option) + { + struct dc *core_dc = pipe_ctx->stream->ctx->dc; ++ struct dc_stream_state *stream = pipe_ctx->stream; + + core_dc->hwss.blank_stream(pipe_ctx); + + if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) + deallocate_mst_payload(pipe_ctx); + ++ if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) ++ dal_ddc_service_write_scdc_data( ++ stream->link->ddc, 0, ++ stream->timing.flags.LTE_340MCSC_SCRAMBLE); ++ + core_dc->hwss.disable_stream(pipe_ctx, option); + + disable_link(pipe_ctx->stream->link, pipe_ctx->stream->signal); +-- +2.17.1 + |