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[v4,2/2] ARM: dts: da850: specify the maximum pixel clock rate for tilcdc

Message ID 1481030026-7329-3-git-send-email-bgolaszewski@baylibre.com (mailing list archive)
State New, archived
Headers show

Commit Message

Bartosz Golaszewski Dec. 6, 2016, 1:13 p.m. UTC 
At maximum CPU frequency of 300 MHz the maximum pixel clock frequency
is 37.5 MHz[1]. We must filter out any mode for which the calculated
pixel clock rate would exceed this value.

Specify the max-pixelclock property for the display node for
da850-lcdk.

[1] http://processors.wiki.ti.com/index.php/OMAP-L1x/C674x/AM1x_LCD_Controller_(LCDC)_Throughput_and_Optimization_Techniques

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 arch/arm/boot/dts/da850.dtsi | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index ffc6e1a..da86d80 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -452,6 +452,7 @@ 
 			compatible = "ti,da850-tilcdc";
 			reg = <0x213000 0x1000>;
 			interrupts = <52>;
+			max-pixelclock = <37500>;
 			status = "disabled";
 		};
 	};