The I2C GPIO expander (PCA9555) adds 16 GPIOs to the module.
Signed-off-by: Uri Mashiach <[email protected]>
Acked-by: Igor Grinberg <[email protected]>
---
arch/arm/boot/dts/am335x-sbc-t335.dts | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm/boot/dts/am335x-sbc-t335.dts
b/arch/arm/boot/dts/am335x-sbc-t335.dts
index 9e98445..4a5177e 100644
--- a/arch/arm/boot/dts/am335x-sbc-t335.dts
+++ b/arch/arm/boot/dts/am335x-sbc-t335.dts
@@ -14,3 +14,14 @@
model = "CompuLab CM-T335 on SB-T335";
compatible = "compulab,sbc-t335", "compulab,cm-t335", "ti,am33xx";
};
+
+&i2c0 {
+ /* GPIO extender */
+ gpio_ext: pca9555@26 {
+ compatible = "nxp,pca9555";
+ pinctrl-names = "default";
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x26>;
+ };
+};
--
2.5.0
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