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@digi.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
---
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;