diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4931-drm-amd-display-add-DalEnableHDMI20-key-support.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4931-drm-amd-display-add-DalEnableHDMI20-key-support.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4931-drm-amd-display-add-DalEnableHDMI20-key-support.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4931-drm-amd-display-add-DalEnableHDMI20-key-support.patch new file mode 100644 index 00000000..bd76d537 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4931-drm-amd-display-add-DalEnableHDMI20-key-support.patch @@ -0,0 +1,82 @@ +From 1bdb1450b953467166e6914ede6e94b52c13ada2 Mon Sep 17 00:00:00 2001 +From: Charlene Liu <charlene.liu@amd.com> +Date: Tue, 26 Jun 2018 18:49:32 -0400 +Subject: [PATCH 4931/5725] drm/amd/display: add DalEnableHDMI20 key support + +[why] +"DalEnableHDMI20" set to 0, disallow HDMI YCbCr420 and pixel clock > 340Mhz +Default is enabled. + +Signed-off-by: Charlene Liu <charlene.liu@amd.com> +Reviewed-by: Jun Lei <Jun.Lei@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.h | 1 + + drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 6 ++++++ + drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c | 6 ++++++ + 3 files changed, 13 insertions(+) + +diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h +index d3c15de..a7c880b 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc.h ++++ b/drivers/gpu/drm/amd/display/dc/dc.h +@@ -252,6 +252,7 @@ struct dc_debug { + bool recovery_enabled; + bool avoid_vbios_exec_table; + bool scl_reset_length10; ++ bool hdmi20_disable; + + }; + struct dc_state; +diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c +index dbe3b26..60e3c6a 100644 +--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c ++++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c +@@ -646,6 +646,9 @@ static bool dce110_link_encoder_validate_hdmi_output( + if (!enc110->base.features.flags.bits.HDMI_6GB_EN && + adjusted_pix_clk_khz >= 300000) + return false; ++ if (enc110->base.ctx->dc->debug.hdmi20_disable && ++ crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) ++ return false; + return true; + } + +@@ -773,6 +776,9 @@ void dce110_link_encoder_construct( + __func__, + result); + } ++ if (enc110->base.ctx->dc->debug.hdmi20_disable) { ++ enc110->base.features.flags.bits.HDMI_6GB_EN = 0; ++ } + } + + bool dce110_link_encoder_validate_output_with_stream( +diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c +index be78ccb..6f67520 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c +@@ -596,6 +596,9 @@ static bool dcn10_link_encoder_validate_hdmi_output( + if (!enc10->base.features.flags.bits.HDMI_6GB_EN && + adjusted_pix_clk_khz >= 300000) + return false; ++ if (enc10->base.ctx->dc->debug.hdmi20_disable && ++ crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) ++ return false; + return true; + } + +@@ -728,6 +731,9 @@ void dcn10_link_encoder_construct( + __func__, + result); + } ++ if (enc10->base.ctx->dc->debug.hdmi20_disable) { ++ enc10->base.features.flags.bits.HDMI_6GB_EN = 0; ++ } + } + + bool dcn10_link_encoder_validate_output_with_stream( +-- +2.7.4 + |