From f41738d0f101fc07c79aea6093650ab2ed4bf8c4 Mon Sep 17 00:00:00 2001 From: Jonas Karlman Date: Sat, 17 Feb 2024 00:22:35 +0000 Subject: [PATCH] gpio: rockchip: Use gpio alias id as gpio bank id The U-Boot driver try to base the gpio bank id on the gpio-ranges prop and fall back to base the bank id on the node name. However, the linux driver try to base the bank id on the gpio alias id and fall back on node order. This can cause issues when SoC DT is synced from linux and gpioX@ nodes has been renamed to gpio@ and gpio-ranges or a SoC specific alias has not been assigned. Try to use the gpio alias id as first fallback when a gpio-ranges prop is missing to ease sync of updated SoC DT. Keep the current fallback on node name as a third fallback to not affect any existing unsynced DT. Signed-off-by: Jonas Karlman Reviewed-by: Quentin Schulz Reviewed-by: Kever Yang --- drivers/gpio/rk_gpio.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/rk_gpio.c b/drivers/gpio/rk_gpio.c index c5e096bb1a..2e901ac5c7 100644 --- a/drivers/gpio/rk_gpio.c +++ b/drivers/gpio/rk_gpio.c @@ -200,8 +200,11 @@ static int rockchip_gpio_probe(struct udevice *dev) priv->bank = args.args[1] / ROCKCHIP_GPIOS_PER_BANK; } else { uc_priv->gpio_count = ROCKCHIP_GPIOS_PER_BANK; - end = strrchr(dev->name, '@'); - priv->bank = trailing_strtoln(dev->name, end); + ret = dev_read_alias_seq(dev, &priv->bank); + if (ret) { + end = strrchr(dev->name, '@'); + priv->bank = trailing_strtoln(dev->name, end); + } } priv->name[0] = 'A' + priv->bank; -- 2.39.5