Enabling spidev on the jetson nano is hanging when flashing

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
59

Hi All
J4.2.1 have regression for this feature.
Please apply below patch to try.

diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index e1010440f32d..09dd6e4a8698 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -217,6 +217,11 @@ static void tegra_gpio_enable(struct tegra_gpio_info *tgi, int gpio)
        tegra_gpio_mask_write(tgi, GPIO_MSK_CNF(tgi, gpio), gpio, 1);
 }
 
+static void tegra_gpio_disable(struct tegra_gpio_info *tgi, int gpio)
+{
+       tegra_gpio_mask_write(tgi, GPIO_MSK_CNF(tgi, gpio), gpio, 0);
+}
+
 static int tegra_gpio_request(struct gpio_chip *chip, unsigned offset)
 {
        tegra_gpio_save_gpio_state(offset);
@@ -225,8 +230,12 @@ static int tegra_gpio_request(struct gpio_chip *chip, unsigned offset)
 
 static void tegra_gpio_free(struct gpio_chip *chip, unsigned offset)
 {
+       struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
+
        pinctrl_free_gpio(chip->base + offset);
        tegra_gpio_restore_gpio_state(offset);
+       tegra_gpio_disable(tgi, offset);
+
 }
 
 static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
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