* [PATCH AUTOSEL 4.4 05/11] ARM: dts: am4372: Set memory bandwidth limit for DISPC
[not found] <20191009170646.696-1-sashal@kernel.org>
@ 2019-10-09 17:06 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2019-10-09 17:06 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Peter Ujfalusi, Tomi Valkeinen, Tony Lindgren, Sasha Levin,
linux-omap, devicetree
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 3ef1d5a26389c..3bb5254a227a3 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -1002,6 +1002,8 @@
ti,hwmods = "dss_dispc";
clocks = <&disp_clk>;
clock-names = "fck";
+
+ max-memory-bandwidth = <230000000>;
};
rfbi: rfbi@4832a800 {
--
2.20.1
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2019-10-09 17:06 ` [PATCH AUTOSEL 4.4 05/11] ARM: dts: am4372: Set memory bandwidth limit for DISPC Sasha Levin
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