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rpi-6.18: overlays: pcf857x: Add support for pca857x, pca967x and max732x #7257

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Merged
pelwell merged 1 commit into from
Feb 23, 2026
Merged

rpi-6.18: overlays: pcf857x: Add support for pca857x, pca967x and max732x #7257

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9 changes: 9 additions & 0 deletions arch/arm/boot/dts/overlays/README
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Original file line number Diff line number Diff line change
Expand Up @@ -3860,10 +3860,19 @@ Params: addr I2C address of expander. Default
depends on model selected.
i2c-bus Supports all the standard I2C bus selection
parameters - see "dtoverlay -h i2c-bus"
max7328 Select the Maxim MAX7328 (8 bit)
max7329 Select the Maxim MAX7329 (8 bit)
pcf8574 Select the NXP PCF8574 (8 bit)
pcf8574a Select the NXP PCF8574A (8 bit)
pcf8575 Select the NXP PCF8575 (16 bit)
pca8574 Select the NXP PCA8574 (8 bit)
pca8575 Select the NXP PCA8575 (16 bit)
pca9670 Select the NXP PCA9670 (8 bit)
pca9671 Select the NXP PCA9671 (16 bit)
pca9672 Select the NXP PCA9672 (8 bit)
pca9673 Select the NXP PCA9673 (16 bit)
pca9674 Select the NXP PCA9674 (8 bit)
pca9675 Select the NXP PCA9675 (16 bit)


Name: pcie-32bit-dma
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9 changes: 9 additions & 0 deletions arch/arm/boot/dts/overlays/pcf857x-overlay.dts
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Expand Up @@ -25,10 +25,19 @@
};

__overrides__ {
max7328 = <&pcf857x>,"compatible=maxim,max7328", <&pcf857x>,"reg:0=0x20";
max7329 = <&pcf857x>,"compatible=maxim,max7329", <&pcf857x>,"reg:0=0x38";
pcf8574 = <&pcf857x>,"compatible=nxp,pcf8574", <&pcf857x>,"reg:0=0x20";
pcf8574a = <&pcf857x>,"compatible=nxp,pcf8574a", <&pcf857x>,"reg:0=0x38";
pcf8575 = <&pcf857x>,"compatible=nxp,pcf8575", <&pcf857x>,"reg:0=0x20";
pca8574 = <&pcf857x>,"compatible=nxp,pca8574", <&pcf857x>,"reg:0=0x20";
pca8575 = <&pcf857x>,"compatible=nxp,pca8575", <&pcf857x>,"reg:0=0x20";
pca9670 = <&pcf857x>,"compatible=nxp,pca9670", <&pcf857x>,"reg:0=0x20";
pca9671 = <&pcf857x>,"compatible=nxp,pca9671", <&pcf857x>,"reg:0=0x20";
pca9672 = <&pcf857x>,"compatible=nxp,pca9672", <&pcf857x>,"reg:0=0x20";
pca9673 = <&pcf857x>,"compatible=nxp,pca9673", <&pcf857x>,"reg:0=0x28";
pca9674 = <&pcf857x>,"compatible=nxp,pca9674", <&pcf857x>,"reg:0=0x20";
pca9675 = <&pcf857x>,"compatible=nxp,pca9675", <&pcf857x>,"reg:0=0x20";
addr = <&pcf857x>,"reg:0";
};
};