diff options
Diffstat (limited to 'arch/arm/boot/dts/overlays/i2c-mux-overlay.dts')
-rw-r--r-- | arch/arm/boot/dts/overlays/i2c-mux-overlay.dts | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/overlays/i2c-mux-overlay.dts b/arch/arm/boot/dts/overlays/i2c-mux-overlay.dts new file mode 100644 index 000000000000..112aed91ecb2 --- /dev/null +++ b/arch/arm/boot/dts/overlays/i2c-mux-overlay.dts @@ -0,0 +1,139 @@ +// Umbrella I2C Mux overlay + +/dts-v1/; +/plugin/; + +/{ + compatible = "brcm,bcm2835"; + + fragment@0 { + target = <&i2c_arm>; + __dormant__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + pca9542: mux@70 { + compatible = "nxp,pca9542"; + reg = <0x70>; + #address-cells = <1>; + #size-cells = <0>; + + i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + }; + i2c@1 { + #address-cells = <1>; + #size-cells = <0>; + reg = <1>; + }; + }; + }; + }; + + fragment@1 { + target = <&i2c_arm>; + __dormant__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + pca9545: mux@70 { + compatible = "nxp,pca9545"; + reg = <0x70>; + #address-cells = <1>; + #size-cells = <0>; + + i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + }; + i2c@1 { + #address-cells = <1>; + #size-cells = <0>; + reg = <1>; + }; + i2c@2 { + #address-cells = <1>; + #size-cells = <0>; + reg = <2>; + }; + i2c@3 { + #address-cells = <1>; + #size-cells = <0>; + reg = <3>; + }; + }; + }; + }; + + fragment@2 { + target = <&i2c_arm>; + __dormant__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + pca9548: mux@70 { + compatible = "nxp,pca9548"; + reg = <0x70>; + #address-cells = <1>; + #size-cells = <0>; + + i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + }; + i2c@1 { + #address-cells = <1>; + #size-cells = <0>; + reg = <1>; + }; + i2c@2 { + #address-cells = <1>; + #size-cells = <0>; + reg = <2>; + }; + i2c@3 { + #address-cells = <1>; + #size-cells = <0>; + reg = <3>; + }; + i2c@4 { + #address-cells = <1>; + #size-cells = <0>; + reg = <4>; + }; + i2c@5 { + #address-cells = <1>; + #size-cells = <0>; + reg = <5>; + }; + i2c@6 { + #address-cells = <1>; + #size-cells = <0>; + reg = <6>; + }; + i2c@7 { + #address-cells = <1>; + #size-cells = <0>; + reg = <7>; + }; + }; + }; + }; + + __overrides__ { + pca9542 = <0>, "+0"; + pca9545 = <0>, "+1"; + pca9548 = <0>, "+2"; + + addr = <&pca9542>,"reg:0", + <&pca9545>,"reg:0", + <&pca9548>,"reg:0"; + }; +}; |