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-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-.patch49
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
+