Implement the calibration callback to allow turning on the Clock-Data Recovery
module clamping when necessary.
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
drivers/phy/broadcom/phy-brcm-sata.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/phy/broadcom/phy-brcm-sata.c b/drivers/phy/broadcom/phy-brcm-sata.c
index 3f953db70288..8000ce312d95 100644
--- a/drivers/phy/broadcom/phy-brcm-sata.c
+++ b/drivers/phy/broadcom/phy-brcm-sata.c
@@ -150,6 +150,9 @@ enum sata_phy_regs {
TXPMD_TX_FREQ_CTRL_CONTROL2_FMIN_MASK = 0x3ff,
TXPMD_TX_FREQ_CTRL_CONTROL3 = 0x84,
TXPMD_TX_FREQ_CTRL_CONTROL3_FMAX_MASK = 0x3ff,
+
+ RXPMD_REG_BANK = 0x1c0,
+ RXPMD_RX_FREQ_MON_CONTROL1 = 0x87,
};
enum sata_phy_ctrl_regs {
@@ -505,8 +508,37 @@ static int brcm_sata_phy_init(struct phy *phy)
return rc;
}
+static void brcm_stb_sata_calibrate(struct brcm_sata_port *port)
+{
+ void __iomem *base = brcm_sata_pcb_base(port);
+ struct brcm_sata_phy *priv = port->phy_priv;
+ u32 tmp = BIT(8);
+
+ brcm_sata_phy_wr(base, RXPMD_REG_BANK, RXPMD_RX_FREQ_MON_CONTROL1,
+ ~tmp, tmp);
+}
+
+static int brcm_sata_phy_calibrate(struct phy *phy)
+{
+ struct brcm_sata_port *port = phy_get_drvdata(phy);
+ int rc = -EOPNOTSUPP;
+
+ switch (port->phy_priv->version) {
+ case BRCM_SATA_PHY_STB_28NM:
+ case BRCM_SATA_PHY_STB_40NM:
+ brcm_stb_sata_calibrate(port);
+ rc = 0;
+ break;
+ default:
+ break;
+ };
+
+ return rc;
+}
+
static const struct phy_ops phy_ops = {
.init = brcm_sata_phy_init,
+ .calibrate = brcm_sata_phy_calibrate,
.owner = THIS_MODULE,
};
--
2.7.4
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