[PATCH v3 18/22] arm64: dts: mediatek: mt7988a-bpi-r4: Add PCA9545 I2C Mux

Frank Wunderlich
2024-12-17T09:13:06Z

Bananapi R4 uses an i2c multiplexer for SFP slots, rtc and eeprom.
Add its node to the right i2c controller.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
changes:
v3:
- move reg after compatible
- change commit title
---
.../dts/mediatek/mt7988a-bananapi-bpi-r4.dts | 41 +++++++++++++++++++
1 file changed, 41 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
index 3d165f7b29dc..0dc1fd9265c6 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
@@ -2,6 +2,8 @@

/dts-v1/;

+#include <dt-bindings/gpio/gpio.h>
+
#include "mt7988a.dtsi"

/ {
@@ -70,6 +72,45 @@ &i2c2 {
pinctrl-names = "default";
pinctrl-0 = <&i2c2_1_pins>;
status = "okay";
+
+ pca9545: i2c-mux@70 {
+ compatible = "nxp,pca9545";
+ reg = <0x70>;
+ reset-gpios = <&pio 5 GPIO_ACTIVE_LOW>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ pcf8563: rtc@51 {
+ compatible = "nxp,pcf8563";
+ reg = <0x51>;
+ #clock-cells = <0>;
+ };
+
+ eeprom@57 {
+ compatible = "atmel,24c02";
+ reg = <0x57>;
+ size = <256>;
+ };
+
+ };
+
+ i2c_sfp1: i2c@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+ };
+
+ i2c_sfp2: i2c@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <2>;
+ };
+ };
};

&pio {
--
2.43.0