LM
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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 <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Andreas Dannenberg 2019-06-04 18:08:18 -05:00 committed by Tom Rini
parent 7b6aed5136
commit ba7907c79c
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/arm/dts/k3-am654-base-board.dts
View File

@ -76,4 +76,11 @@
pinctrl-names = "default"; pinctrl-names = "default";
pinctrl-0 = <&wkup_i2c0_pins_default>; pinctrl-0 = <&wkup_i2c0_pins_default>;
clock-frequency = <400000>; clock-frequency = <400000>;
tca9554: gpio@38 {
compatible = "nxp,pca9554";
reg = <0x38>;
gpio-controller;
#gpio-cells = <2>;
};
}; };