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Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/0740-drm-amd-display-Clear-water-mark-change-request-bit-.patch')
-rw-r--r--common/recipes-kernel/linux/linux-yocto-4.14.71/0740-drm-amd-display-Clear-water-mark-change-request-bit-.patch41
1 files changed, 41 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/0740-drm-amd-display-Clear-water-mark-change-request-bit-.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/0740-drm-amd-display-Clear-water-mark-change-request-bit-.patch
new file mode 100644
index 00000000..9c69d810
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/0740-drm-amd-display-Clear-water-mark-change-request-bit-.patch
@@ -0,0 +1,41 @@
+From 871c103a9e0262f59018620a79a802385a40779d Mon Sep 17 00:00:00 2001
+From: Yongqiang Sun <yongqiang.sun@amd.com>
+Date: Thu, 3 Aug 2017 15:46:10 -0400
+Subject: [PATCH 0740/4131] drm/amd/display: Clear water mark change request
+ bit before programing.
+
+Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@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/dcn10/dcn10_hw_sequencer.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+index 948aaeb..9165dc8 100644
+--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+@@ -320,6 +320,9 @@ static void program_watermarks(
+ */
+ uint32_t prog_wm_value;
+
++ REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
++ DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0);
++
+ /* Repeat for water mark set A, B, C and D. */
+ /* clock state A */
+ prog_wm_value = convert_and_clamp(watermarks->a.urgent_ns,
+@@ -518,8 +521,7 @@ static void program_watermarks(
+
+ REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
+ DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 1);
+- REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
+- DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0);
++
+ REG_UPDATE(DCHUBBUB_ARB_SAT_LEVEL,
+ DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz);
+ REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND,
+--
+2.7.4
+