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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Bing Guo <bing.guo@amd.com>, Martin Leung <martin.leung@amd.com>,
	Aurabindo Pillai <aurabindo.pillai@amd.com>,
	Alex Deucher <alexander.deucher@amd.com>,
	Sasha Levin <sashal@kernel.org>,
	amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 5.10 19/20] drm/amd/display: Fix Dynamic bpp issue with 8K30 with Navi 1X
Date: Tue, 10 Aug 2021 10:15:37 -0400	[thread overview]
Message-ID: <20210810141538.3117707-19-sashal@kernel.org> (raw)
In-Reply-To: <20210810141538.3117707-1-sashal@kernel.org>

From: Bing Guo <bing.guo@amd.com>

[ Upstream commit 06050a0f01dbac2ca33145ef19a72041206ea983 ]

Why:
In DCN2x, HW doesn't automatically divide MASTER_UPDATE_LOCK_DB_X
by the number of pipes ODM Combined.

How:
Set MASTER_UPDATE_LOCK_DB_X to the value that is adjusted by the
number of pipes ODM Combined.

Reviewed-by: Martin Leung <martin.leung@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Bing Guo <bing.guo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
index d8b18c515d06..e3cfb442a062 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
@@ -357,7 +357,7 @@ void optc2_lock_doublebuffer_enable(struct timing_generator *optc)
 
 	REG_UPDATE_2(OTG_GLOBAL_CONTROL1,
 			MASTER_UPDATE_LOCK_DB_X,
-			h_blank_start - 200 - 1,
+			(h_blank_start - 200 - 1) / optc1->opp_count,
 			MASTER_UPDATE_LOCK_DB_Y,
 			v_blank_start - 1);
 }
-- 
2.30.2


  parent reply	other threads:[~2021-08-10 14:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-10 14:15 [PATCH AUTOSEL 5.10 01/20] dmaengine: xilinx_dma: Fix read-after-free bug when terminating transfers Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 02/20] dmaengine: usb-dmac: Fix PM reference leak in usb_dmac_probe() Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 03/20] spi: spi-mux: Add module info needed for autoloading Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 04/20] net: xfrm: Fix end of loop tests for list_for_each_entry Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 05/20] ARM: dts: am43x-epos-evm: Reduce i2c0 bus speed for tps65218 Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 06/20] dmaengine: of-dma: router_xlate to return -EPROBE_DEFER if controller is not yet available Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 07/20] scsi: pm80xx: Fix TMF task completion race condition Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 08/20] scsi: megaraid_mm: Fix end of loop tests for list_for_each_entry() Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 09/20] scsi: scsi_dh_rdac: Avoid crash during rdac_bus_attach() Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 10/20] scsi: core: Avoid printing an error if target_alloc() returns -ENXIO Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 11/20] scsi: core: Fix capacity set to zero after offlinining device Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 12/20] drm/amdgpu: fix the doorbell missing when in CGPG issue for renoir Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 13/20] qede: fix crash in rmmod qede while automatic debug collection Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 14/20] ARM: dts: nomadik: Fix up interrupt controller node names Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 16/20] Revert "ACPICA: Fix memory leak caused by _CID repair function" Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 17/20] net: usb: pegasus: Check the return value of get_geristers() and friends; Sasha Levin
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 18/20] net: usb: lan78xx: don't modify phy_device state concurrently Sasha Levin
2021-08-10 14:15 ` Sasha Levin [this message]
2021-08-10 14:15 ` [PATCH AUTOSEL 5.10 20/20] drm/amd/display: workaround for hard hang on HPD on native DP Sasha Levin

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