#define LAN9303_INT_EN 0x17
# define LAN9303_INT_EN_PHY_INT2_EN BIT(27)
# define LAN9303_INT_EN_PHY_INT1_EN BIT(26)
+#define LAN9303_BYTE_ORDER 0x19
#define LAN9303_HW_CFG 0x1D
# define LAN9303_HW_CFG_READY BIT(27)
# define LAN9303_HW_CFG_AMDX_EN_PORT2 BIT(26)
if (ret) {
dev_err(chip->dev, "failed to read chip revision register: %d\n",
ret);
- if (!chip->reset_gpio) {
- dev_dbg(chip->dev,
- "hint: maybe failed due to missing reset GPIO\n");
- }
return ret;
}
int lan9303_probe(struct lan9303 *chip, struct device_node *np)
{
int ret;
+ u32 reg;
mutex_init(&chip->indirect_mutex);
mutex_init(&chip->alr_mutex);
lan9303_handle_reset(chip);
+ /* First read to the device. This is a Dummy read to ensure MDIO */
+ /* access is in 32-bit sync. */
+ ret = lan9303_read(chip->regmap, LAN9303_BYTE_ORDER, ®);
+ if (ret) {
+ dev_err(chip->dev, "failed to access the device: %d\n",
+ ret);
+ if (!chip->reset_gpio) {
+ dev_dbg(chip->dev,
+ "hint: maybe failed due to missing reset GPIO\n");
+ }
+ return ret;
+ }
+
ret = lan9303_check_device(chip);
if (ret)
return ret;