Some SoCs, such as i.MX93, don't have all 32 pins available per port. Allow optional generic 'ngpios' property to be specified from the device tree and default to VF610_GPIO_PER_PORT (32) if the property does not exist. Signed-off-by: Hector Palacios <hector.palacios@xxxxxxxx> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx> --- drivers/gpio/gpio-vf610.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c index 07e5e6323e86..4abdf75e9a0a 100644 --- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -276,6 +276,7 @@ static int vf610_gpio_probe(struct platform_device *pdev) struct vf610_gpio_port *port; struct gpio_chip *gc; struct gpio_irq_chip *girq; + u32 ngpios; int i; int ret; bool dual_base; @@ -353,7 +354,11 @@ static int vf610_gpio_probe(struct platform_device *pdev) gc = &port->gc; gc->parent = dev; gc->label = dev_name(dev); - gc->ngpio = VF610_GPIO_PER_PORT; + ret = device_property_read_u32(dev, "ngpios", &ngpios); + if (ret || ngpios > VF610_GPIO_PER_PORT) + gc->ngpio = VF610_GPIO_PER_PORT; + else + gc->ngpio = (u16)ngpios; gc->base = -1; gc->request = gpiochip_generic_request;
