[PATCH v1 2/6] gpio: dwapb: Read GPIO base from snps,gpio-base property

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

For backward compatibility with some legacy devices, introduce
a new property snps,gpio-base to read GPIO base. Don't advertise
to discourage users from utilizing it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/gpio/gpio-dwapb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index a7ca72086511..e3d7589434eb 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -599,7 +599,8 @@ static struct dwapb_platform_data *dwapb_gpio_get_pdata(struct device *dev)
 			pp->ngpio = 32;
 		}
 
-		pp->gpio_base	= -1;
+		if (fwnode_property_read_u32(fwnode, "snps,gpio-base", &pp->gpio_base))
+			pp->gpio_base = -1;
 
 		/*
 		 * Only port A can provide interrupts in all configurations of
-- 
2.27.0.rc2