From: Ricky CX Wu <ricky.cx.wu.wiwynn@xxxxxxxxx>
Add I2C mux for Management Board to separate the I2C bus 35 for
updating CPLD firmware and I2C bus 34 for the other devices.
Signed-off-by: Ricky CX Wu <ricky.cx.wu.wiwynn@xxxxxxxxx>
Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@xxxxxxxxxx>
---
.../aspeed/aspeed-bmc-facebook-yosemite4.dts | 80 ++++++++++++++++---
1 file changed, 69 insertions(+), 11 deletions(-)
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
index 98477792aa00..234ce7019fca 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
@@ -17,6 +17,9 @@ aliases {
serial6 = &uart7;
serial7 = &uart8;
serial8 = &uart9;
+
+ i2c34 = &imux34;
+ i2c35 = &imux35;
};
chosen {
@@ -348,22 +351,77 @@ eeprom@54 {
};
&i2c12 {
+ #address-cells = <1>;
+ #size-cells = <0>;
status = "okay";
bus-frequency = <400000>;
- temperature-sensor@48 {
- compatible = "ti,tmp75";
- reg = <0x48>;
- };
+ i2c-mux@70 {
+ compatible = "nxp,pca9544";
+ reg = <0x70>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ i2c-mux-idle-disconnect;
- eeprom@50 {
- compatible = "atmel,24c128";
- reg = <0x50>;
- };
+ imux34: i2c@0 {
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ temperature-sensor@48 {
+ compatible = "ti,tmp75";
+ reg = <0x48>;
+ };
+
+ eeprom@50 {
+ compatible = "atmel,24c128";
+ reg = <0x50>;
+ };
+
+ eeprom@54 {
+ compatible = "atmel,24c64";
+ reg = <0x54>;
+ };
+
+ rtc@6f {
+ compatible = "nuvoton,nct3018y";
+ reg = <0x6f>;
+ };
+
+ gpio@20 {
+ compatible = "nxp,pca9506";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ gpio@21 {
+ compatible = "nxp,pca9506";
+ reg = <0x21>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ gpio@22 {
+ compatible = "nxp,pca9506";
+ reg = <0x22>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ gpio@23 {
+ compatible = "nxp,pca9506";
+ reg = <0x23>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+ };
- rtc@6f {
- compatible = "nuvoton,nct3018y";
- reg = <0x6f>;
+ imux35: i2c@1 {
+ reg = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
};
};
--
2.25.1
