U-Boot pinctrl driver expects a reg property explicitly unlike linux. To align the DT of U-boot with the Linux, reg property is also arrvied from child GPIO bank nodes when configured under the pinctrl node.
Signed-off-by: Manikandan Muralidharan manikandan.m@microchip.com --- drivers/pinctrl/pinctrl-at91.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index 2b871143fc0..64f960478fc 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -510,17 +510,30 @@ static int at91_pinctrl_probe(struct udevice *dev) { struct at91_pinctrl_priv *priv = dev_get_priv(dev); fdt_addr_t addr_base; + struct udevice *gpio_node; int index;
- for (index = 0; index < MAX_GPIO_BANKS; index++) { - addr_base = devfdt_get_addr_index(dev, index); - if (addr_base == FDT_ADDR_T_NONE) - break; + if (list_empty(&dev->child_head)) { + for (index = 0; index < MAX_GPIO_BANKS; index++) { + addr_base = devfdt_get_addr_index(dev, index); + if (addr_base == FDT_ADDR_T_NONE) + break;
- priv->reg_base[index] = (struct at91_port *)addr_base; + priv->reg_base[index] = (struct at91_port *)addr_base; + } + } else { + index = 0; + list_for_each_entry(gpio_node, &dev->child_head, sibling_node) { + addr_base = dev_read_addr(gpio_node); + if (addr_base == FDT_ADDR_T_NONE) + break; + + priv->reg_base[index] = (struct at91_port *)addr_base; + index++; + } }
- priv->nbanks = index; + priv->nbanks = index < MAX_GPIO_BANKS ? index : MAX_GPIO_BANKS;
return 0; }