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gpio: stm32f7: Fix gpio bank hole management

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In case "gpio-ranges" property is not present in device tree,
use default value for gpio_count and gpio_range.
This fixes an issue on stm32 F7 and H7 boards where "pinmux status -a"
command didn't return any pin status due to the fact that both stm32 F7
and H7 board DT doesn't use the gpio-ranges property.

Fixes: dbf928dd2634a6("gpio: stm32f7: Add gpio bank holes management")

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrice Chotard 2019-01-04 10:55:05 +01:00 committed by Tom Rini
parent 17be909a1b
commit 39a8f0be2d
1 changed files with 5 additions and 0 deletions
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5
drivers/gpio/stm32f7_gpio.c
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@ -171,6 +171,11 @@ static int gpio_stm32_probe(struct udevice *dev)
ret = dev_read_phandle_with_args(dev, "gpio-ranges",
NULL, 3, i, &args);
if (ret == -ENOENT) {
uc_priv->gpio_count = STM32_GPIOS_PER_BANK;
priv->gpio_range = GENMASK(STM32_GPIOS_PER_BANK - 1, 0);
}
while (ret != -ENOENT) {
priv->gpio_range |= GENMASK(args.args[2] + args.args[0] - 1,
args.args[0]);