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phy: marvell: phy-mvebu-cp110-comphy: implement RXAUI support

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Marvell's cp110 phy supports RXAUI on lanes 2, 3, 4, and 5 when
connected to port zero. When used in this mode, lanes operate in pairs
of two (2 and 3, 4 and 5).

Signed-off-by: Matt Pelland <mpelland@starry.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Matt Pelland 2019-08-01 15:50:58 -04:00 committed by Kishon Vijay Abraham I
parent 0c79cf1f48
commit f2a857aa2a
1 changed files with 120 additions and 11 deletions
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131
drivers/phy/marvell/phy-mvebu-cp110-comphy.c
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@ -24,6 +24,7 @@
#define MVEBU_COMPHY_SERDES_CFG0_PU_RX BIT(11)
#define MVEBU_COMPHY_SERDES_CFG0_PU_TX BIT(12)
#define MVEBU_COMPHY_SERDES_CFG0_HALF_BUS BIT(14)
#define MVEBU_COMPHY_SERDES_CFG0_RXAUI_MODE BIT(15)
#define MVEBU_COMPHY_SERDES_CFG1(n) (0x4 + (n) * 0x1000)
#define MVEBU_COMPHY_SERDES_CFG1_RESET BIT(3)
#define MVEBU_COMPHY_SERDES_CFG1_RX_INIT BIT(4)
@ -113,6 +114,9 @@
#define MVEBU_COMPHY_SELECTOR_PHY(n) ((n) * 0x4)
#define MVEBU_COMPHY_PIPE_SELECTOR 0x1144
#define MVEBU_COMPHY_PIPE_SELECTOR_PIPE(n) ((n) * 0x4)
#define MVEBU_COMPHY_SD1_CTRL1 0x1148
#define MVEBU_COMPHY_SD1_CTRL1_RXAUI1_EN BIT(26)
#define MVEBU_COMPHY_SD1_CTRL1_RXAUI0_EN BIT(27)
#define MVEBU_COMPHY_LANES 6
#define MVEBU_COMPHY_PORTS 3
@ -216,7 +220,7 @@ static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
/* lane 2 */
ETH_CONF(2, 0, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
ETH_CONF(2, 0, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_HS_SGMII),
ETH_CONF(2, 0, PHY_INTERFACE_MODE_RXAUI, -1, COMPHY_FW_MODE_RXAUI),
ETH_CONF(2, 0, PHY_INTERFACE_MODE_RXAUI, 0x1, COMPHY_FW_MODE_RXAUI),
ETH_CONF(2, 0, PHY_INTERFACE_MODE_10GKR, 0x1, COMPHY_FW_MODE_XFI),
GEN_CONF(2, 0, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
GEN_CONF(2, 0, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
@ -225,14 +229,14 @@ static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
GEN_CONF(3, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
ETH_CONF(3, 1, PHY_INTERFACE_MODE_SGMII, 0x2, COMPHY_FW_MODE_SGMII),
ETH_CONF(3, 1, PHY_INTERFACE_MODE_2500BASEX, 0x2, COMPHY_FW_MODE_HS_SGMII),
ETH_CONF(3, 1, PHY_INTERFACE_MODE_RXAUI, -1, COMPHY_FW_MODE_RXAUI),
ETH_CONF(3, 1, PHY_INTERFACE_MODE_RXAUI, 0x1, COMPHY_FW_MODE_RXAUI),
GEN_CONF(3, 1, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
GEN_CONF(3, 1, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
/* lane 4 */
ETH_CONF(4, 0, PHY_INTERFACE_MODE_SGMII, 0x2, COMPHY_FW_MODE_SGMII),
ETH_CONF(4, 0, PHY_INTERFACE_MODE_2500BASEX, 0x2, COMPHY_FW_MODE_HS_SGMII),
ETH_CONF(4, 0, PHY_INTERFACE_MODE_10GKR, 0x2, COMPHY_FW_MODE_XFI),
ETH_CONF(4, 0, PHY_INTERFACE_MODE_RXAUI, -1, COMPHY_FW_MODE_RXAUI),
ETH_CONF(4, 0, PHY_INTERFACE_MODE_RXAUI, 0x2, COMPHY_FW_MODE_RXAUI),
GEN_CONF(4, 0, PHY_MODE_USB_DEVICE_SS, COMPHY_FW_MODE_USB3D),
GEN_CONF(4, 1, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
GEN_CONF(4, 1, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
@ -240,7 +244,7 @@ static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
ETH_CONF(4, 1, PHY_INTERFACE_MODE_2500BASEX, -1, COMPHY_FW_MODE_HS_SGMII),
ETH_CONF(4, 1, PHY_INTERFACE_MODE_10GKR, -1, COMPHY_FW_MODE_XFI),
/* lane 5 */
ETH_CONF(5, 1, PHY_INTERFACE_MODE_RXAUI, -1, COMPHY_FW_MODE_RXAUI),
ETH_CONF(5, 1, PHY_INTERFACE_MODE_RXAUI, 0x2, COMPHY_FW_MODE_RXAUI),
GEN_CONF(5, 1, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
ETH_CONF(5, 2, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
ETH_CONF(5, 2, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_HS_SGMII),
@ -317,7 +321,7 @@ static inline int mvebu_comphy_get_fw_mode(int lane, int port,
return mvebu_comphy_get_mode(true, lane, port, mode, submode);
}
static void mvebu_comphy_ethernet_init_reset(struct mvebu_comphy_lane *lane)
static int mvebu_comphy_ethernet_init_reset(struct mvebu_comphy_lane *lane)
{
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
@ -334,20 +338,61 @@ static void mvebu_comphy_ethernet_init_reset(struct mvebu_comphy_lane *lane)
MVEBU_COMPHY_SERDES_CFG0_PU_TX |
MVEBU_COMPHY_SERDES_CFG0_HALF_BUS |
MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0xf) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0xf));
if (lane->submode == PHY_INTERFACE_MODE_10GKR)
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0xf) |
MVEBU_COMPHY_SERDES_CFG0_RXAUI_MODE);
switch (lane->submode) {
case PHY_INTERFACE_MODE_10GKR:
val |= MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0xe) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0xe);
else if (lane->submode == PHY_INTERFACE_MODE_2500BASEX)
break;
case PHY_INTERFACE_MODE_RXAUI:
val |= MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0xb) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0xb) |
MVEBU_COMPHY_SERDES_CFG0_RXAUI_MODE;
break;
case PHY_INTERFACE_MODE_2500BASEX:
val |= MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0x8) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0x8) |
MVEBU_COMPHY_SERDES_CFG0_HALF_BUS;
else if (lane->submode == PHY_INTERFACE_MODE_SGMII)
break;
case PHY_INTERFACE_MODE_SGMII:
val |= MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0x6) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0x6) |
MVEBU_COMPHY_SERDES_CFG0_HALF_BUS;
break;
default:
dev_err(priv->dev,
"unsupported comphy submode (%d) on lane %d\n",
lane->submode,
lane->id);
return -ENOTSUPP;
}
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG0(lane->id));
if (lane->submode == PHY_INTERFACE_MODE_RXAUI) {
regmap_read(priv->regmap, MVEBU_COMPHY_SD1_CTRL1, &val);
switch (lane->id) {
case 2:
case 3:
val |= MVEBU_COMPHY_SD1_CTRL1_RXAUI0_EN;
break;
case 4:
case 5:
val |= MVEBU_COMPHY_SD1_CTRL1_RXAUI1_EN;
break;
default:
dev_err(priv->dev,
"RXAUI is not supported on comphy lane %d\n",
lane->id);
return -EINVAL;
}
regmap_write(priv->regmap, MVEBU_COMPHY_SD1_CTRL1, val);
}
/* reset */
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
val &= ~(MVEBU_COMPHY_SERDES_CFG1_RESET |
@ -388,6 +433,8 @@ static void mvebu_comphy_ethernet_init_reset(struct mvebu_comphy_lane *lane)
val &= ~MVEBU_COMPHY_LOOPBACK_DBUS_WIDTH(0x7);
val |= MVEBU_COMPHY_LOOPBACK_DBUS_WIDTH(0x1);
writel(val, priv->base + MVEBU_COMPHY_LOOPBACK(lane->id));
return 0;
}
static int mvebu_comphy_init_plls(struct mvebu_comphy_lane *lane)
@ -436,8 +483,11 @@ static int mvebu_comphy_set_mode_sgmii(struct phy *phy)
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
int err;
mvebu_comphy_ethernet_init_reset(lane);
err = mvebu_comphy_ethernet_init_reset(lane);
if (err)
return err;
val = readl(priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val &= ~MVEBU_COMPHY_RX_CTRL1_CLK8T_EN;
@ -461,13 +511,69 @@ static int mvebu_comphy_set_mode_sgmii(struct phy *phy)
return mvebu_comphy_init_plls(lane);
}
static int mvebu_comphy_set_mode_rxaui(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
int err;
err = mvebu_comphy_ethernet_init_reset(lane);
if (err)
return err;
val = readl(priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val |= MVEBU_COMPHY_RX_CTRL1_RXCLK2X_SEL |
MVEBU_COMPHY_RX_CTRL1_CLK8T_EN;
writel(val, priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val = readl(priv->base + MVEBU_COMPHY_DLT_CTRL(lane->id));
val |= MVEBU_COMPHY_DLT_CTRL_DLT_FLOOP_EN;
writel(val, priv->base + MVEBU_COMPHY_DLT_CTRL(lane->id));
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG2(lane->id));
val |= MVEBU_COMPHY_SERDES_CFG2_DFE_EN;
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG2(lane->id));
val = readl(priv->base + MVEBU_COMPHY_DFE_RES(lane->id));
val |= MVEBU_COMPHY_DFE_RES_FORCE_GEN_TBL;
writel(val, priv->base + MVEBU_COMPHY_DFE_RES(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S0(lane->id));
val &= ~MVEBU_COMPHY_GEN1_S0_TX_EMPH(0xf);
val |= MVEBU_COMPHY_GEN1_S0_TX_EMPH(0xd);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S0(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S1(lane->id));
val &= ~(MVEBU_COMPHY_GEN1_S1_RX_MUL_PI(0x7) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_PF(0x7));
val |= MVEBU_COMPHY_GEN1_S1_RX_MUL_PI(0x1) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_PF(0x1) |
MVEBU_COMPHY_GEN1_S1_RX_DFE_EN;
writel(val, priv->base + MVEBU_COMPHY_GEN1_S1(lane->id));
val = readl(priv->base + MVEBU_COMPHY_COEF(lane->id));
val &= ~(MVEBU_COMPHY_COEF_DFE_EN | MVEBU_COMPHY_COEF_DFE_CTRL);
writel(val, priv->base + MVEBU_COMPHY_COEF(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S4(lane->id));
val &= ~MVEBU_COMPHY_GEN1_S4_DFE_RES(0x3);
val |= MVEBU_COMPHY_GEN1_S4_DFE_RES(0x1);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S4(lane->id));
return mvebu_comphy_init_plls(lane);
}
static int mvebu_comphy_set_mode_10gkr(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
int err;
mvebu_comphy_ethernet_init_reset(lane);
err = mvebu_comphy_ethernet_init_reset(lane);
if (err)
return err;
val = readl(priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val |= MVEBU_COMPHY_RX_CTRL1_RXCLK2X_SEL |
@ -626,6 +732,9 @@ static int mvebu_comphy_power_on_legacy(struct phy *phy)
case PHY_INTERFACE_MODE_2500BASEX:
ret = mvebu_comphy_set_mode_sgmii(phy);
break;
case PHY_INTERFACE_MODE_RXAUI:
ret = mvebu_comphy_set_mode_rxaui(phy);
break;
case PHY_INTERFACE_MODE_10GKR:
ret = mvebu_comphy_set_mode_10gkr(phy);
break;