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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>,
	Tomi Valkeinen <tomi.valkeinen@ti.com>,
	Tony Lindgren <tony@atomide.com>, Sasha Levin <sashal@kernel.org>,
	linux-omap@vger.kernel.org, devicetree@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 05/13] ARM: dts: am4372: Set memory bandwidth limit for DISPC
Date: Wed,  9 Oct 2019 13:06:24 -0400	[thread overview]
Message-ID: <20191009170635.536-5-sashal@kernel.org> (raw)
In-Reply-To: <20191009170635.536-1-sashal@kernel.org>

From: Peter Ujfalusi <peter.ujfalusi@ti.com>

[ Upstream commit f90ec6cdf674248dcad85bf9af6e064bf472b841 ]

Set memory bandwidth limit to filter out resolutions above 720p@60Hz to
avoid underflow errors due to the bandwidth needs of higher resolutions.

am43xx can not provide enough bandwidth to DISPC to correctly handle
'high' resolutions.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/am4372.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index c9c9a47446e8e..56224aa5e83ee 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -1117,6 +1117,8 @@
 				ti,hwmods = "dss_dispc";
 				clocks = <&disp_clk>;
 				clock-names = "fck";
+
+				max-memory-bandwidth = <230000000>;
 			};
 
 			rfbi: rfbi@4832a800 {
-- 
2.20.1


  parent reply	other threads:[~2019-10-09 17:25 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09 17:06 [PATCH AUTOSEL 4.9 01/13] scsi: ufs: skip shutdown if hba is not powered Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 02/13] scsi: megaraid: disable device when probe failed after enabled device Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 03/13] scsi: qla2xxx: Fix unbound sleep in fcport delete path Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 04/13] ARM: OMAP2+: Fix missing reset done flag for am3 and am43 Sasha Levin
2019-10-09 17:06 ` Sasha Levin [this message]
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 06/13] MIPS: dts: ar9331: fix interrupt-controller size Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 07/13] kvm: vmx: Limit guest PMCs to those supported on the host Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 08/13] nl80211: fix null pointer dereference Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 09/13] mac80211: fix txq " Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 10/13] mips: Loongson: Fix the link time qualifier of 'serial_exit()' Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 11/13] net: hisilicon: Fix usage of uninitialized variable in function mdio_sc_cfg_reg_write() Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 12/13] namespace: fix namespace.pl script to support relative paths Sasha Levin
2019-10-09 17:06 ` [PATCH AUTOSEL 4.9 13/13] Make filldir[64]() verify the directory entry filename is valid Sasha Levin

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