[PATCH AUTOSEL 4.19 11/26] ARM: dts: am4372: Set memory bandwidth limit for DISPC

Sasha Levin
2019-10-09T17:30:52Z

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 d4b7c59eec685..cf1e4f747242f 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -1142,6 +1142,8 @@
ti,hwmods = "dss_dispc";
clocks = <&disp_clk>;
clock-names = "fck";
+
+ max-memory-bandwidth = <230000000>;
};

rfbi: rfbi@4832a800 {
--
2.20.1