diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/net/phy/m88e1512/chip.h | 3 | ||||
| -rw-r--r-- | src/drivers/net/phy/m88e1512/m88e1512.c | 19 | ||||
| -rw-r--r-- | src/drivers/net/phy/m88e1512/m88e1512.h | 6 |
3 files changed, 28 insertions, 0 deletions
diff --git a/src/drivers/net/phy/m88e1512/chip.h b/src/drivers/net/phy/m88e1512/chip.h index 915001a7a1..f1e313ba97 100644 --- a/src/drivers/net/phy/m88e1512/chip.h +++ b/src/drivers/net/phy/m88e1512/chip.h @@ -11,4 +11,7 @@ struct drivers_net_phy_m88e1512_config { /* 1x, 2x,...8x is the number of times the PHY attempts to establish Gigabit link before the PHY downshifts to the next highest speed. */ unsigned char downshift_cnt; + bool force_mos; /* Force PMOS/NMOS manually */ + unsigned char pmos_val; /* Set PMOS calibration value */ + unsigned char nmos_val; /* Set NMOS calibration value */ }; diff --git a/src/drivers/net/phy/m88e1512/m88e1512.c b/src/drivers/net/phy/m88e1512/m88e1512.c index 5ce9b40c55..2e8994c748 100644 --- a/src/drivers/net/phy/m88e1512/m88e1512.c +++ b/src/drivers/net/phy/m88e1512/m88e1512.c @@ -67,6 +67,25 @@ static void m88e1512_init(struct device *dev) mdio_write(dev, LED_TIMER_CTRL_REG, reg); } + /* Set RGMII output impedance manually. */ + if (config->force_mos) { + printk(BIOS_DEBUG, "%s: Set RGMII driver strength manually for %s.\n", + dev_path(dev->bus->dev), dev->chip_ops->name); + + /* Select page 2 to access RGMII output impedance calibration override + register. */ + switch_page(dev, 2); + + reg = mdio_read(dev, OUT_IMP_CAL_OVERRIDE_REG); + /* Set first only NMOS/PMOS values. */ + clrsetbits16(®, MOS_VALUE_MASK, PMOS_VALUE(config->pmos_val) | + NMOS_VALUE(config->nmos_val)); + mdio_write(dev, OUT_IMP_CAL_OVERRIDE_REG, reg); + /* Activate the new setting. */ + setbits16(®, FORCE_MOS); + mdio_write(dev, OUT_IMP_CAL_OVERRIDE_REG, reg); + } + /* Switch back to page 0. */ switch_page(dev, 0); } diff --git a/src/drivers/net/phy/m88e1512/m88e1512.h b/src/drivers/net/phy/m88e1512/m88e1512.h index 449cc57531..3310c8b994 100644 --- a/src/drivers/net/phy/m88e1512/m88e1512.h +++ b/src/drivers/net/phy/m88e1512/m88e1512.h @@ -13,6 +13,12 @@ #define DOWNSHIFT_CNT_MAX 8 #define DOWNSHIFT_CNT(cnt) ((cnt - 1) << 12) #define DOWNSHIFT_EN (1 << 11) +/* Page 2 registers */ +#define OUT_IMP_CAL_OVERRIDE_REG 0x18 +#define MOS_VALUE_MASK 0x0F4F +#define PMOS_VALUE(pmos) (pmos << 8) +#define FORCE_MOS (1 << 6) +#define NMOS_VALUE(nmos) (nmos << 0) /* Page 3 registers */ #define LED_FUNC_CTRL_REG 0x10 #define LED_FUNC_CTRL_MASK 0x0FFF |