Define the I2C alias ports for the riser cards.
Besides that, it also adds the i2c muxes to switch to the i2c alias
ports.
Signed-off-by: Chanh Nguyen <chanh@xxxxxxxxxxxxxxxxxxxxxx>
---
.../aspeed/aspeed-bmc-ampere-mtmitchell.dts | 52 +++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
index 1679911e4fd8..0703b77e438b 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
@@ -29,6 +29,18 @@ aliases {
i2c30 = &ocpslot_0;
i2c31 = &ocpslot_1;
+ /*
+ * i2c bus 32-33 assigned to Riser slot 0-1
+ */
+ i2c32 = &i2c_riser0;
+ i2c33 = &i2c_riser1;
+
+ /*
+ * i2c bus 38-39 assigned to FRU on Riser slot 0-1
+ */
+ i2c38 = &i2c_riser0_chn_0;
+ i2c39 = &i2c_riser1_chn_0;
+
/*
* I2C NVMe alias port
*/
@@ -551,6 +563,46 @@ ocpslot_1_temp: temperature-sensor@1f {
reg = <0x1f>;
};
};
+
+ i2c_riser0: i2c@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x2>;
+
+ i2c-mux@72 {
+ compatible = "nxp,pca9546";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x72>;
+ i2c-mux-idle-disconnect;
+
+ i2c_riser0_chn_0: i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x0>;
+ };
+ };
+ };
+
+ i2c_riser1: i2c@3 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x3>;
+
+ i2c-mux@72 {
+ compatible = "nxp,pca9546";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x72>;
+ i2c-mux-idle-disconnect;
+
+ i2c_riser1_chn_0: i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x0>;
+ };
+ };
+ };
};
};
--
2.43.0
