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gpio: tegra_gpio: implement rfree operation

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Releasing a GPIO on Tegra necessitates changing its configuration to SFIO
to activate its special function. Without this reconfiguration, the special
function will be unavailable.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
This commit is contained in:
Svyatoslav Ryhel
2025-04-11 08:49:12 +03:00
parent 48db49b097
commit a87b564018
1 changed files with 11 additions and 0 deletions
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11
drivers/gpio/tegra_gpio.c
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@@ -248,6 +248,16 @@ static int tegra_gpio_xlate(struct udevice *dev, struct gpio_desc *desc,
return 0;
}
static int tegra_gpio_rfree(struct udevice *dev, unsigned int offset)
{
struct tegra_port_info *state = dev_get_priv(dev);
/* Set the pin as a SFIO */
set_config(state->base_gpio + offset, CFG_SFIO);
return 0;
}
static const struct dm_gpio_ops gpio_tegra_ops = {
.direction_input = tegra_gpio_direction_input,
.direction_output = tegra_gpio_direction_output,
@@ -255,6 +265,7 @@ static const struct dm_gpio_ops gpio_tegra_ops = {
.set_value = tegra_gpio_set_value,
.get_function = tegra_gpio_get_function,
.xlate = tegra_gpio_xlate,
.rfree = tegra_gpio_rfree,
};
/*