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drivers: gpio: add NXP pcal9722 gpio driver #91728

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drivers: gpio: add NXP pcal9722 gpio driver #91728

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1cfbc34
dts: bindings: gpio: add dts binding for NXP PCAL9722 SPI GPIO expander
singular0770 Jun 16, 2025
47178a6
drivers: gpio: add pcal9722 SPI GPIO expander driver
singular0770 Jun 16, 2025
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1 change: 1 addition & 0 deletions drivers/gpio/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,7 @@ zephyr_library_sources_ifdef(CONFIG_GPIO_PCA6416 gpio_pca6416.c)
zephyr_library_sources_ifdef(CONFIG_GPIO_PCA953X gpio_pca953x.c)
zephyr_library_sources_ifdef(CONFIG_GPIO_PCA95XX gpio_pca95xx.c)
zephyr_library_sources_ifdef(CONFIG_GPIO_PCAL64XXA gpio_pcal64xxa.c)
zephyr_library_sources_ifdef(CONFIG_GPIO_PCAL9722 gpio_pcal9722.c)
zephyr_library_sources_ifdef(CONFIG_GPIO_PCA_SERIES gpio_pca_series.c)
zephyr_library_sources_ifdef(CONFIG_GPIO_PCF857X gpio_pcf857x.c)
zephyr_library_sources_ifdef(CONFIG_GPIO_PSOC6 gpio_psoc6.c)
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1 change: 1 addition & 0 deletions drivers/gpio/Kconfig
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Expand Up @@ -165,6 +165,7 @@ source "drivers/gpio/Kconfig.pca953x"
source "drivers/gpio/Kconfig.pca95xx"
source "drivers/gpio/Kconfig.pca_series"
source "drivers/gpio/Kconfig.pcal64xxa"
source "drivers/gpio/Kconfig.pcal9722"
source "drivers/gpio/Kconfig.pcf857x"
source "drivers/gpio/Kconfig.psoc6"
source "drivers/gpio/Kconfig.rcar"
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22 changes: 22 additions & 0 deletions drivers/gpio/Kconfig.pcal9722
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@@ -0,0 +1,22 @@
# PCAL9722 GPIO configuration options

# Copyright 2025 Michael Estes
# SPDX-License-Identifier: Apache-2.0

menuconfig GPIO_PCAL9722
bool "PCAL9722 SPI GPIO chip"
default y
depends on DT_HAS_NXP_PCAL9722_ENABLED
depends on SPI
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maybe select SPI instead, although I don't think best practice has been agreed upon.

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I would have liked to have done this, but select SPI causes a dependency loop right now seemingly due to some boards where SPI depends on GPIO or vice versa.

help
Enable driver for PCAL9722 SPI GPIO chip.

if GPIO_PCAL9722

config GPIO_PCAL9722_INIT_PRIORITY
int "Init priority"
default 70
help
PCAL9722 Device driver initialization priority.

endif # GPIO_PCAL9722
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