diff options
Diffstat (limited to 'drivers/net/phy/mdio-mscc-miim.c')
| -rw-r--r-- | drivers/net/phy/mdio-mscc-miim.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/net/phy/mdio-mscc-miim.c b/drivers/net/phy/mdio-mscc-miim.c index 42119f661452..aed9afa1e8f1 100644 --- a/drivers/net/phy/mdio-mscc-miim.c +++ b/drivers/net/phy/mdio-mscc-miim.c @@ -16,6 +16,7 @@ #include <linux/of_mdio.h> #define MSCC_MIIM_REG_STATUS 0x0 +#define MSCC_MIIM_STATUS_STAT_PENDING BIT(2) #define MSCC_MIIM_STATUS_STAT_BUSY BIT(3) #define MSCC_MIIM_REG_CMD 0x8 #define MSCC_MIIM_CMD_OPR_WRITE BIT(1) @@ -47,13 +48,23 @@ static int mscc_miim_wait_ready(struct mii_bus *bus) !(val & MSCC_MIIM_STATUS_STAT_BUSY), 50, 10000); } +static int mscc_miim_wait_pending(struct mii_bus *bus) +{ + struct mscc_miim_dev *miim = bus->priv; + u32 val; + + return readl_poll_timeout(miim->regs + MSCC_MIIM_REG_STATUS, val, + !(val & MSCC_MIIM_STATUS_STAT_PENDING), + 50, 10000); +} + static int mscc_miim_read(struct mii_bus *bus, int mii_id, int regnum) { struct mscc_miim_dev *miim = bus->priv; u32 val; int ret; - ret = mscc_miim_wait_ready(bus); + ret = mscc_miim_wait_pending(bus); if (ret) goto out; @@ -82,7 +93,7 @@ static int mscc_miim_write(struct mii_bus *bus, int mii_id, struct mscc_miim_dev *miim = bus->priv; int ret; - ret = mscc_miim_wait_ready(bus); + ret = mscc_miim_wait_pending(bus); if (ret < 0) goto out; |