ARM: dts: da850: specify the maximum pixel clock rate for tilcdc

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://www.ti.com/lit/ds/symlink/am1808.pdf
(SPRS653E, revised March 2014, table 6-110)

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
[nsekhar@ti.com: commit message update]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index 6b0ef3daf9d4..58b1566ebf8c 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -462,6 +462,7 @@
                         compatible = "ti,da850-tilcdc";
                         reg = <0x213000 0x1000>;
                         interrupts = <52>;
+                        max-pixelclock = <37500>;
                         status = "disabled";
                 };
         };