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

Message ID 20190930085450.15874-1-tomi.valkeinen@ti.com
State New
Headers show
Series
  • ARM: dts: am4372: Set memory bandwidth limit for DISPC
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Commit Message

Tomi Valkeinen Sept. 30, 2019, 8:54 a.m.
From: Peter Ujfalusi <peter.ujfalusi@ti.com>

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>
---
 arch/arm/boot/dts/am4372.dtsi | 2 ++
 1 file changed, 2 insertions(+)

Patch

diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index 848e2a8884e2..14bbc438055f 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -337,6 +337,8 @@ 
 				ti,hwmods = "dss_dispc";
 				clocks = <&disp_clk>;
 				clock-names = "fck";
+
+				max-memory-bandwidth = <230000000>;
 			};
 
 			rfbi: rfbi@4832a800 {