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drivers: gpio: PCF857x: Modify PCF8574 driver

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Modify existing PCF8574 driver as PCF857x for:
PCF8574 - 8 channel I/O expander
PCF8575 - 16 channel I/O expander

Signed-off-by: Amrith Venkat Kesavamoorthi <amrith@mr-beam.org>
This commit is contained in:
Amrith Venkat Kesavamoorthi 2023-01-23 12:29:37 +01:00 • committed by Fabio Baltieri
commit 879e3a42b0
9 changed files with 176 additions and 121 deletions
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11
tests/drivers/build_all/gpio/app.overlay
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@ -68,8 +68,17 @@
interrupt-gpios = <&test_gpio 0 0>;
};
test_i2c_pcf8575: pcf8575@21 {
compatible = "nxp,pcf857x";
reg = <0x21>;
gpio-controller;
#gpio-cells = <2>;
ngpios = <16>;
int-gpios = <&test_gpio 0 0>;
};
test_i2c_pcf8574: pcf8574@27 {
compatible = "nxp,pcf8574";
compatible = "nxp,pcf857x";
reg = <0x27>;
gpio-controller;
#gpio-cells = <2>;