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path: root/drivers/net/dsa/qca8k.c
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Diffstat (limited to 'drivers/net/dsa/qca8k.c')
-rw-r--r--drivers/net/dsa/qca8k.c15
1 files changed, 15 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;