From: Tóth János <gomba007@xxxxxxxxx> Add support for the PCF8574T 8-bit I2C I/O expander. The driver is tested with: + tools/lsgpio + tools/gpio-hammer + some LEDs [1] https://www.nxp.com/docs/en/data-sheet/PCF8574_PCF8574A.pdf Signed-off-by: Tóth János <gomba007@xxxxxxxxx> --- drivers/gpio/Kconfig | 2 +- drivers/gpio/gpio-pcf857x.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 98b4d1633b25..d7cdc3cc1b00 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1193,7 +1193,7 @@ config GPIO_PCF857X Most of these parts are from NXP, though TI is a second source for some of them. Compatible models include: - 8 bits: pcf8574, pcf8574a, pca8574, pca8574a, + 8 bits: pcf8574, pcf8574a, pcf8574t, pca8574, pca8574a, pca9670, pca9672, pca9674, pca9674a, max7328, max7329 diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c index 7c57eaeb0afe..2464c527a4e8 100644 --- a/drivers/gpio/gpio-pcf857x.c +++ b/drivers/gpio/gpio-pcf857x.c @@ -20,6 +20,7 @@ static const struct i2c_device_id pcf857x_id[] = { { "pcf8574", 8 }, { "pcf8574a", 8 }, + { "pcf8574t", 8 }, { "pca8574", 8 }, { "pca9670", 8 }, { "pca9672", 8 }, @@ -38,6 +39,7 @@ MODULE_DEVICE_TABLE(i2c, pcf857x_id); static const struct of_device_id pcf857x_of_table[] = { { .compatible = "nxp,pcf8574", (void *)8 }, { .compatible = "nxp,pcf8574a", (void *)8 }, + { .compatible = "nxp,pcf8574t", (void *)8 }, { .compatible = "nxp,pca8574", (void *)8 }, { .compatible = "nxp,pca9670", (void *)8 }, { .compatible = "nxp,pca9672", (void *)8 }, -- 2.34.1
