arm64: dts: allwinner: a64: Add pinmux setting for CSI MCLK on PE1

Some camera modules have the SoC feeding a master clock to the sensor
instead of having a standalone crystal. This clock signal is generated
from the clock control unit and output from the CSI MCLK function of
pin PE1.

Add a pinmux setting for it for camera sensors to reference.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 728f700..8c5b521 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -595,6 +595,12 @@
                                function = "csi";
                        };
 
+                       /omit-if-no-ref/
+                       csi_mclk_pin: csi-mclk-pin {
+                               pins = "PE1";
+                               function = "csi";
+                       };
+
                        i2c0_pins: i2c0-pins {
                                pins = "PH0", "PH1";
                                function = "i2c0";