diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/dsa/qca8k.c | 15 | ||||
| -rw-r--r-- | drivers/net/dsa/qca8k.h | 2 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c index c4fa400efdcc..27709f866c23 100644 --- a/drivers/net/dsa/qca8k.c +++ b/drivers/net/dsa/qca8k.c @@ -14,6 +14,7 @@ #include <linux/of_platform.h> #include <linux/if_bridge.h> #include <linux/mdio.h> +#include <linux/gpio.h> #include <linux/etherdevice.h> #include "qca8k.h" @@ -1046,6 +1047,20 @@ qca8k_sw_probe(struct mdio_device *mdiodev) priv->bus = mdiodev->bus; priv->dev = &mdiodev->dev; + priv->reset_gpio = devm_gpiod_get_optional(priv->dev, "reset", + GPIOD_ASIS); + if (IS_ERR(priv->reset_gpio)) + return PTR_ERR(priv->reset_gpio); + + if (priv->reset_gpio) { + gpiod_set_value_cansleep(priv->reset_gpio, 1); + /* The active low duration must be greater than 10 ms + * and checkpatch.pl wants 20 ms. + */ + msleep(20); + gpiod_set_value_cansleep(priv->reset_gpio, 0); + } + /* read the switches ID register */ id = qca8k_read(priv, QCA8K_REG_MASK_CTRL); id >>= QCA8K_MASK_CTRL_ID_S; diff --git a/drivers/net/dsa/qca8k.h b/drivers/net/dsa/qca8k.h index 91557433ce2f..42d6ea24eb14 100644 --- a/drivers/net/dsa/qca8k.h +++ b/drivers/net/dsa/qca8k.h @@ -10,6 +10,7 @@ #include <linux/delay.h> #include <linux/regmap.h> +#include <linux/gpio.h> #define QCA8K_NUM_PORTS 7 @@ -174,6 +175,7 @@ struct qca8k_priv { struct mutex reg_mutex; struct device *dev; struct dsa_switch_ops ops; + struct gpio_desc *reset_gpio; }; struct qca8k_mib_desc { |