[PATCH] ARM: dts: am4372: Set memory bandwidth limit for DISPC

[PATCH] ARM: dts: am4372: Set memory bandwidth limit for DISPC

[Tomi Valkeinen]

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(+)

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 {
-- 
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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[PATCH] ARM: dts: am4372: Set memory bandwidth limit for DISPC

[Tomi Valkeinen]

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(+)

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 {
-- 
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki


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Re: [PATCH] ARM: dts: am4372: Set memory bandwidth limit for DISPC

[Tony Lindgren]

* Tomi Valkeinen <tomi.valkeinen@ti.com> [190930 01:55]:
> 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.

Applying into fixes thanks.

Tony

Re: [PATCH] ARM: dts: am4372: Set memory bandwidth limit for DISPC

[Tony Lindgren]

* Tomi Valkeinen <tomi.valkeinen@ti.com> [190930 01:55]:
> 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.

Applying into fixes thanks.

Tony

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