diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4071-drm-amd-display-add-new-active-dongle-to-existent-w-.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4071-drm-amd-display-add-new-active-dongle-to-existent-w-.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4071-drm-amd-display-add-new-active-dongle-to-existent-w-.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4071-drm-amd-display-add-new-active-dongle-to-existent-w-.patch new file mode 100644 index 00000000..e057b890 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4071-drm-amd-display-add-new-active-dongle-to-existent-w-.patch @@ -0,0 +1,49 @@ +From 32b9217a255f210acae66b763e88c6436336c588 Mon Sep 17 00:00:00 2001 +From: Vitaly Prosyak <vitaly.prosyak@amd.com> +Date: Mon, 16 Sep 2019 17:04:33 -0500 +Subject: [PATCH 4071/4256] drm/amd/display: add new active dongle to existent + w/a + +[Why & How] +Dongle 0x00E04C power down all internal circuits including +AUX communication preventing reading DPCD table. +Encoder will skip DP RX power down on disable output +to keep receiver powered all the time. + +Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com> +Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +Acked-by: Vitaly Prosyak <Vitaly.Prosyak@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 1 + + drivers/gpu/drm/amd/display/include/ddc_service_types.h | 2 ++ + 2 files changed, 3 insertions(+) + +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 649ed31ccfe5..aae204141c60 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 +@@ -2721,6 +2721,7 @@ static void dp_wa_power_up_0010FA(struct dc_link *link, uint8_t *dpcd_data, + * keep receiver powered all the time.*/ + case DP_BRANCH_DEVICE_ID_0010FA: + case DP_BRANCH_DEVICE_ID_0080E1: ++ case DP_BRANCH_DEVICE_ID_00E04C: + link->wa_flags.dp_keep_receiver_powered = true; + break; + +diff --git a/drivers/gpu/drm/amd/display/include/ddc_service_types.h b/drivers/gpu/drm/amd/display/include/ddc_service_types.h +index 18961707db23..9ad49da50a17 100644 +--- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h ++++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h +@@ -31,6 +31,8 @@ + #define DP_BRANCH_DEVICE_ID_0022B9 0x0022B9 + #define DP_BRANCH_DEVICE_ID_00001A 0x00001A + #define DP_BRANCH_DEVICE_ID_0080E1 0x0080e1 ++#define DP_BRANCH_DEVICE_ID_90CC24 0x90CC24 ++#define DP_BRANCH_DEVICE_ID_00E04C 0x00E04C + + enum ddc_result { + DDC_RESULT_UNKNOWN = 0, +-- +2.17.1 + |