From: Svyatoslav Ryhel <clamor95(a)gmail.com>
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(a)gmail.com>
---
drivers/gpio/tegra_gpio.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpio/tegra_gpio.c b/drivers/gpio/tegra_gpio.c
index b83df351e74..3d1e18854f2 100644
--- a/drivers/gpio/tegra_gpio.c
+++ b/drivers/gpio/tegra_gpio.c
@@ -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,
};
/*
--
2.49.0
