ARM: dts: am4372: Set memory bandwidth limit for DISPC

[ 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>

diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index c9c9a47446e8e665e2821b1a397da051639da406..56224aa5e83eeb6286ba812d3633328531d55f8d 100644 (file)
--- 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 {