diff options
Diffstat (limited to 'drivers/gpio/rk_gpio.c')
| -rw-r--r-- | drivers/gpio/rk_gpio.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/gpio/rk_gpio.c b/drivers/gpio/rk_gpio.c index 68f30157a9a..f7ad4d68b45 100644 --- a/drivers/gpio/rk_gpio.c +++ b/drivers/gpio/rk_gpio.c @@ -142,6 +142,7 @@ static int rockchip_gpio_probe(struct udevice *dev) { struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev); struct rockchip_gpio_priv *priv = dev_get_priv(dev); + struct ofnode_phandle_args args; char *end; int ret; @@ -150,9 +151,22 @@ static int rockchip_gpio_probe(struct udevice *dev) if (ret) return ret; - uc_priv->gpio_count = ROCKCHIP_GPIOS_PER_BANK; - end = strrchr(dev->name, '@'); - priv->bank = trailing_strtoln(dev->name, end); + /* + * If "gpio-ranges" is present in the devicetree use it to parse + * the GPIO bank ID, otherwise use the legacy method. + */ + ret = ofnode_parse_phandle_with_args(dev_ofnode(dev), + "gpio-ranges", NULL, 3, + 0, &args); + if (!ret || ret != -ENOENT) { + uc_priv->gpio_count = args.args[2]; + priv->bank = args.args[1] / args.args[2]; + } else { + uc_priv->gpio_count = ROCKCHIP_GPIOS_PER_BANK; + end = strrchr(dev->name, '@'); + priv->bank = trailing_strtoln(dev->name, end); + } + priv->name[0] = 'A' + priv->bank; uc_priv->bank_name = priv->name; |