From ba7907c79c9cae0c7570a64f98c92da72eaa5dda Mon Sep 17 00:00:00 2001 From: Andreas Dannenberg Date: Tue, 4 Jun 2019 18:08:18 -0500 Subject: [PATCH] arm64: dts: k3-am654-base-board: Add I2C GPIO expander @ 0x38 The AM654 base board has a TCA9554/PCA9554-type GPIO expander on the wkup_i2c0 bus at address 0x38 that is used to detect the presence of daughter cards. Add a respective DTS description of this expander to enable its use. Signed-off-by: Andreas Dannenberg Reviewed-by: Lokesh Vutla --- arch/arm/dts/k3-am654-base-board.dts | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/dts/k3-am654-base-board.dts b/arch/arm/dts/k3-am654-base-board.dts index 248d60e89b..e73b9aa6b1 100644 --- a/arch/arm/dts/k3-am654-base-board.dts +++ b/arch/arm/dts/k3-am654-base-board.dts @@ -76,4 +76,11 @@ pinctrl-names = "default"; pinctrl-0 = <&wkup_i2c0_pins_default>; clock-frequency = <400000>; + + tca9554: gpio@38 { + compatible = "nxp,pca9554"; + reg = <0x38>; + gpio-controller; + #gpio-cells = <2>; + }; }; -- 2.25.1