From: Vitaly Prosyak <[email protected]> [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.
Change-Id: I7401a88be1dc15fd45ab1b4964b79ba3184e7610 Signed-off-by: Vitaly Prosyak <[email protected]> Reviewed-by: Charlene Liu <[email protected]> Acked-by: Bhawanpreet Lakha <[email protected]> Acked-by: Vitaly Prosyak <[email protected]> --- 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 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
