net: phy: motorcomm: Add driver for Motorcomm YT8821 2.5G ethernet phy

Add a driver for the motorcomm YT8821 2.5G ethernet phy which works in
2500base-x mode.

Verify the driver on BPI-R3(with MediaTek MT7986(Filogic 830) SoC) evb.

Signed-off-by: Frank Sae <Frank.Sae@motor-comm.com>
This commit is contained in:
Frank Sae
2024-09-12 05:02:25 -07:00
committed by Tom Rini
parent a1211a5f6b
commit 95adf607d3

View File

@@ -12,6 +12,7 @@
#define PHY_ID_YT8511 0x0000010a
#define PHY_ID_YT8531 0x4f51e91b
#define PHY_ID_YT8821 0x4f51ea19
#define PHY_ID_MASK GENMASK(31, 0)
/* Extended Register's Address Offset Register */
@@ -106,6 +107,8 @@
#define YTPHY_SPEED_10M ((0x0 << 14))
#define YTPHY_SPEED_100M ((0x1 << 14))
#define YTPHY_SPEED_1000M ((0x2 << 14))
#define YTPHY_SPEED_10G ((0x3 << 14))
#define YTPHY_SPEED_2500M ((0x0 << 14) | BIT(9))
#define YT8531_EXTREG_SLEEP_CONTROL1_REG 0x27
#define YT8531_ESC1R_SLEEP_SW BIT(15)
@@ -133,6 +136,91 @@
#define TX_CLK_100_INVERTED BIT(4)
#define TX_CLK_1000_INVERTED BIT(5)
#define YT8821_SDS_EXT_CSR_CTRL_REG 0x23
#define YT8821_SDS_EXT_CSR_VCO_LDO_EN BIT(15)
#define YT8821_SDS_EXT_CSR_VCO_BIAS_LPF_EN BIT(8)
#define YT8821_UTP_EXT_PI_CTRL_REG 0x56
#define YT8821_UTP_EXT_PI_RST_N_FIFO BIT(5)
#define YT8821_UTP_EXT_PI_TX_CLK_SEL_AFE BIT(4)
#define YT8821_UTP_EXT_PI_RX_CLK_3_SEL_AFE BIT(3)
#define YT8821_UTP_EXT_PI_RX_CLK_2_SEL_AFE BIT(2)
#define YT8821_UTP_EXT_PI_RX_CLK_1_SEL_AFE BIT(1)
#define YT8821_UTP_EXT_PI_RX_CLK_0_SEL_AFE BIT(0)
#define YT8821_UTP_EXT_VCT_CFG6_CTRL_REG 0x97
#define YT8821_UTP_EXT_FECHO_AMP_TH_HUGE GENMASK(15, 8)
#define YT8821_UTP_EXT_ECHO_CTRL_REG 0x336
#define YT8821_UTP_EXT_TRACE_LNG_GAIN_THR_1000 GENMASK(14, 8)
#define YT8821_UTP_EXT_GAIN_CTRL_REG 0x340
#define YT8821_UTP_EXT_TRACE_MED_GAIN_THR_1000 GENMASK(6, 0)
#define YT8821_UTP_EXT_RPDN_CTRL_REG 0x34E
#define YT8821_UTP_EXT_RPDN_BP_FFE_LNG_2500 BIT(15)
#define YT8821_UTP_EXT_RPDN_BP_FFE_SHT_2500 BIT(7)
#define YT8821_UTP_EXT_RPDN_IPR_SHT_2500 GENMASK(6, 0)
#define YT8821_UTP_EXT_TH_20DB_2500_CTRL_REG 0x36A
#define YT8821_UTP_EXT_TH_20DB_2500 GENMASK(15, 0)
#define YT8821_UTP_EXT_TRACE_CTRL_REG 0x372
#define YT8821_UTP_EXT_TRACE_LNG_GAIN_THE_2500 GENMASK(14, 8)
#define YT8821_UTP_EXT_TRACE_MED_GAIN_THE_2500 GENMASK(6, 0)
#define YT8821_UTP_EXT_ALPHA_IPR_CTRL_REG 0x374
#define YT8821_UTP_EXT_ALPHA_SHT_2500 GENMASK(14, 8)
#define YT8821_UTP_EXT_IPR_LNG_2500 GENMASK(6, 0)
#define YT8821_UTP_EXT_PLL_CTRL_REG 0x450
#define YT8821_UTP_EXT_PLL_SPARE_CFG GENMASK(7, 0)
#define YT8821_UTP_EXT_DAC_IMID_CH_2_3_CTRL_REG 0x466
#define YT8821_UTP_EXT_DAC_IMID_CH_3_10_ORG GENMASK(14, 8)
#define YT8821_UTP_EXT_DAC_IMID_CH_2_10_ORG GENMASK(6, 0)
#define YT8821_UTP_EXT_DAC_IMID_CH_0_1_CTRL_REG 0x467
#define YT8821_UTP_EXT_DAC_IMID_CH_1_10_ORG GENMASK(14, 8)
#define YT8821_UTP_EXT_DAC_IMID_CH_0_10_ORG GENMASK(6, 0)
#define YT8821_UTP_EXT_DAC_IMSB_CH_2_3_CTRL_REG 0x468
#define YT8821_UTP_EXT_DAC_IMSB_CH_3_10_ORG GENMASK(14, 8)
#define YT8821_UTP_EXT_DAC_IMSB_CH_2_10_ORG GENMASK(6, 0)
#define YT8821_UTP_EXT_DAC_IMSB_CH_0_1_CTRL_REG 0x469
#define YT8821_UTP_EXT_DAC_IMSB_CH_1_10_ORG GENMASK(14, 8)
#define YT8821_UTP_EXT_DAC_IMSB_CH_0_10_ORG GENMASK(6, 0)
#define YT8821_UTP_EXT_MU_COARSE_FR_CTRL_REG 0x4B3
#define YT8821_UTP_EXT_MU_COARSE_FR_F_FFE GENMASK(14, 12)
#define YT8821_UTP_EXT_MU_COARSE_FR_F_FBE GENMASK(10, 8)
#define YT8821_UTP_EXT_MU_FINE_FR_CTRL_REG 0x4B5
#define YT8821_UTP_EXT_MU_FINE_FR_F_FFE GENMASK(14, 12)
#define YT8821_UTP_EXT_MU_FINE_FR_F_FBE GENMASK(10, 8)
#define YT8821_UTP_EXT_VGA_LPF1_CAP_CTRL_REG 0x4D2
#define YT8821_UTP_EXT_VGA_LPF1_CAP_OTHER GENMASK(7, 4)
#define YT8821_UTP_EXT_VGA_LPF1_CAP_2500 GENMASK(3, 0)
#define YT8821_UTP_EXT_VGA_LPF2_CAP_CTRL_REG 0x4D3
#define YT8821_UTP_EXT_VGA_LPF2_CAP_OTHER GENMASK(7, 4)
#define YT8821_UTP_EXT_VGA_LPF2_CAP_2500 GENMASK(3, 0)
#define YT8821_UTP_EXT_TXGE_NFR_FR_THP_CTRL_REG 0x660
#define YT8821_UTP_EXT_NFR_TX_ABILITY BIT(3)
#define YT8821_CHIP_MODE_FORCE_BX2500 1
/* chip config register */
#define YTPHY_CCR_MODE_SEL_MASK GENMASK(2, 0)
#define YTPHY_REG_SPACE_SELECT_REG 0xA000
#define YTPHY_RSSR_SPACE_MASK BIT(1)
#define YTPHY_RSSR_FIBER_SPACE (0x1 << 1)
#define YTPHY_RSSR_UTP_SPACE (0x0 << 1)
struct ytphy_plat_priv {
u32 rx_delay_ps;
u32 tx_delay_ps;
@@ -634,6 +722,398 @@ static int yt8531_probe(struct phy_device *phydev)
return 0;
}
static int ytphy_save_page(struct phy_device *phydev)
{
int old_page;
old_page = ytphy_read_ext(phydev, YTPHY_REG_SPACE_SELECT_REG);
if (old_page < 0)
return old_page;
if ((old_page & YTPHY_RSSR_SPACE_MASK) == YTPHY_RSSR_FIBER_SPACE)
return YTPHY_RSSR_FIBER_SPACE;
return YTPHY_RSSR_UTP_SPACE;
};
static int ytphy_restore_page(struct phy_device *phydev, int page,
int ret)
{
int mask = YTPHY_RSSR_SPACE_MASK;
int set;
int r;
if ((page & YTPHY_RSSR_SPACE_MASK) == YTPHY_RSSR_FIBER_SPACE)
set = YTPHY_RSSR_FIBER_SPACE;
else
set = YTPHY_RSSR_UTP_SPACE;
r = ytphy_modify_ext(phydev, YTPHY_REG_SPACE_SELECT_REG, mask,
set);
if (ret >= 0 && r < 0)
ret = r;
return ret;
};
static int ytphy_write_ext(struct phy_device *phydev, u16 regnum,
u16 val)
{
int ret;
ret = phy_write(phydev, MDIO_DEVAD_NONE,
YTPHY_PAGE_SELECT, regnum);
if (ret < 0)
return ret;
return phy_write(phydev, MDIO_DEVAD_NONE, YTPHY_PAGE_DATA, val);
}
static int yt8821_probe(struct phy_device *phydev)
{
phydev->advertising = PHY_GBIT_FEATURES |
SUPPORTED_2500baseX_Full |
SUPPORTED_Pause |
SUPPORTED_Asym_Pause;
phydev->supported = phydev->advertising;
return 0;
}
static int yt8821_serdes_init(struct phy_device *phydev)
{
int old_page;
u16 mask;
u16 set;
int ret;
old_page = ytphy_save_page(phydev);
if (old_page < 0)
return old_page;
ret = ytphy_modify_ext(phydev, YTPHY_REG_SPACE_SELECT_REG,
YTPHY_RSSR_SPACE_MASK,
YTPHY_RSSR_FIBER_SPACE);
if (ret < 0)
goto err_restore_page;
ret = phy_modify(phydev, MDIO_DEVAD_NONE, MII_BMCR,
BMCR_ANENABLE, 0);
if (ret < 0)
goto err_restore_page;
mask = YT8821_SDS_EXT_CSR_VCO_LDO_EN |
YT8821_SDS_EXT_CSR_VCO_BIAS_LPF_EN;
set = YT8821_SDS_EXT_CSR_VCO_LDO_EN;
ret = ytphy_modify_ext(phydev, YT8821_SDS_EXT_CSR_CTRL_REG, mask,
set);
err_restore_page:
return ytphy_restore_page(phydev, old_page, ret);
}
static int yt8821_utp_init(struct phy_device *phydev)
{
int old_page;
u16 mask;
u16 save;
u16 set;
int ret;
old_page = ytphy_save_page(phydev);
if (old_page < 0)
return old_page;
ret = ytphy_modify_ext(phydev, YTPHY_REG_SPACE_SELECT_REG,
YTPHY_RSSR_SPACE_MASK,
YTPHY_RSSR_UTP_SPACE);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_RPDN_BP_FFE_LNG_2500 |
YT8821_UTP_EXT_RPDN_BP_FFE_SHT_2500 |
YT8821_UTP_EXT_RPDN_IPR_SHT_2500;
set = YT8821_UTP_EXT_RPDN_BP_FFE_LNG_2500 |
YT8821_UTP_EXT_RPDN_BP_FFE_SHT_2500;
ret = ytphy_modify_ext(phydev, YT8821_UTP_EXT_RPDN_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_VGA_LPF1_CAP_OTHER |
YT8821_UTP_EXT_VGA_LPF1_CAP_2500;
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_VGA_LPF1_CAP_CTRL_REG,
mask, 0);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_VGA_LPF2_CAP_OTHER |
YT8821_UTP_EXT_VGA_LPF2_CAP_2500;
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_VGA_LPF2_CAP_CTRL_REG,
mask, 0);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_TRACE_LNG_GAIN_THE_2500 |
YT8821_UTP_EXT_TRACE_MED_GAIN_THE_2500;
set = FIELD_PREP(YT8821_UTP_EXT_TRACE_LNG_GAIN_THE_2500, 0x5a) |
FIELD_PREP(YT8821_UTP_EXT_TRACE_MED_GAIN_THE_2500, 0x3c);
ret = ytphy_modify_ext(phydev, YT8821_UTP_EXT_TRACE_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_IPR_LNG_2500;
set = FIELD_PREP(YT8821_UTP_EXT_IPR_LNG_2500, 0x6c);
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_ALPHA_IPR_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_TRACE_LNG_GAIN_THR_1000;
set = FIELD_PREP(YT8821_UTP_EXT_TRACE_LNG_GAIN_THR_1000, 0x2a);
ret = ytphy_modify_ext(phydev, YT8821_UTP_EXT_ECHO_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_TRACE_MED_GAIN_THR_1000;
set = FIELD_PREP(YT8821_UTP_EXT_TRACE_MED_GAIN_THR_1000, 0x22);
ret = ytphy_modify_ext(phydev, YT8821_UTP_EXT_GAIN_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_TH_20DB_2500;
set = FIELD_PREP(YT8821_UTP_EXT_TH_20DB_2500, 0x8000);
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_TH_20DB_2500_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_MU_COARSE_FR_F_FFE |
YT8821_UTP_EXT_MU_COARSE_FR_F_FBE;
set = FIELD_PREP(YT8821_UTP_EXT_MU_COARSE_FR_F_FFE, 0x7) |
FIELD_PREP(YT8821_UTP_EXT_MU_COARSE_FR_F_FBE, 0x7);
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_MU_COARSE_FR_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_MU_FINE_FR_F_FFE |
YT8821_UTP_EXT_MU_FINE_FR_F_FBE;
set = FIELD_PREP(YT8821_UTP_EXT_MU_FINE_FR_F_FFE, 0x2) |
FIELD_PREP(YT8821_UTP_EXT_MU_FINE_FR_F_FBE, 0x2);
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_MU_FINE_FR_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
/* save YT8821_UTP_EXT_PI_CTRL_REG's val for use later */
ret = ytphy_read_ext(phydev, YT8821_UTP_EXT_PI_CTRL_REG);
if (ret < 0)
goto err_restore_page;
save = ret;
mask = YT8821_UTP_EXT_PI_TX_CLK_SEL_AFE |
YT8821_UTP_EXT_PI_RX_CLK_3_SEL_AFE |
YT8821_UTP_EXT_PI_RX_CLK_2_SEL_AFE |
YT8821_UTP_EXT_PI_RX_CLK_1_SEL_AFE |
YT8821_UTP_EXT_PI_RX_CLK_0_SEL_AFE;
ret = ytphy_modify_ext(phydev, YT8821_UTP_EXT_PI_CTRL_REG,
mask, 0);
if (ret < 0)
goto err_restore_page;
/* restore YT8821_UTP_EXT_PI_CTRL_REG's val */
ret = ytphy_write_ext(phydev, YT8821_UTP_EXT_PI_CTRL_REG, save);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_FECHO_AMP_TH_HUGE;
set = FIELD_PREP(YT8821_UTP_EXT_FECHO_AMP_TH_HUGE, 0x38);
ret = ytphy_modify_ext(phydev, YT8821_UTP_EXT_VCT_CFG6_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_NFR_TX_ABILITY;
set = YT8821_UTP_EXT_NFR_TX_ABILITY;
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_TXGE_NFR_FR_THP_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_PLL_SPARE_CFG;
set = FIELD_PREP(YT8821_UTP_EXT_PLL_SPARE_CFG, 0xe9);
ret = ytphy_modify_ext(phydev, YT8821_UTP_EXT_PLL_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_DAC_IMID_CH_3_10_ORG |
YT8821_UTP_EXT_DAC_IMID_CH_2_10_ORG;
set = FIELD_PREP(YT8821_UTP_EXT_DAC_IMID_CH_3_10_ORG, 0x64) |
FIELD_PREP(YT8821_UTP_EXT_DAC_IMID_CH_2_10_ORG, 0x64);
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_DAC_IMID_CH_2_3_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_DAC_IMID_CH_1_10_ORG |
YT8821_UTP_EXT_DAC_IMID_CH_0_10_ORG;
set = FIELD_PREP(YT8821_UTP_EXT_DAC_IMID_CH_1_10_ORG, 0x64) |
FIELD_PREP(YT8821_UTP_EXT_DAC_IMID_CH_0_10_ORG, 0x64);
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_DAC_IMID_CH_0_1_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_DAC_IMSB_CH_3_10_ORG |
YT8821_UTP_EXT_DAC_IMSB_CH_2_10_ORG;
set = FIELD_PREP(YT8821_UTP_EXT_DAC_IMSB_CH_3_10_ORG, 0x64) |
FIELD_PREP(YT8821_UTP_EXT_DAC_IMSB_CH_2_10_ORG, 0x64);
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_DAC_IMSB_CH_2_3_CTRL_REG,
mask, set);
if (ret < 0)
goto err_restore_page;
mask = YT8821_UTP_EXT_DAC_IMSB_CH_1_10_ORG |
YT8821_UTP_EXT_DAC_IMSB_CH_0_10_ORG;
set = FIELD_PREP(YT8821_UTP_EXT_DAC_IMSB_CH_1_10_ORG, 0x64) |
FIELD_PREP(YT8821_UTP_EXT_DAC_IMSB_CH_0_10_ORG, 0x64);
ret = ytphy_modify_ext(phydev,
YT8821_UTP_EXT_DAC_IMSB_CH_0_1_CTRL_REG,
mask, set);
err_restore_page:
return ytphy_restore_page(phydev, old_page, ret);
}
static int yt8821_auto_sleep_config(struct phy_device *phydev,
bool enable)
{
int old_page;
int ret;
old_page = ytphy_save_page(phydev);
if (old_page < 0)
return old_page;
ret = ytphy_modify_ext(phydev, YTPHY_REG_SPACE_SELECT_REG,
YTPHY_RSSR_SPACE_MASK,
YTPHY_RSSR_UTP_SPACE);
if (ret < 0)
goto err_restore_page;
ret = ytphy_modify_ext(phydev,
YT8531_EXTREG_SLEEP_CONTROL1_REG,
YT8531_ESC1R_SLEEP_SW,
enable ? 1 : 0);
err_restore_page:
return ytphy_restore_page(phydev, old_page, ret);
}
static int yt8821_soft_reset(struct phy_device *phydev)
{
return ytphy_modify_ext(phydev, YT8531_CHIP_CONFIG_REG,
YT8531_CCR_SW_RST, 0);
}
static int yt8821_config(struct phy_device *phydev)
{
u8 mode = YT8821_CHIP_MODE_FORCE_BX2500;
int ret;
u16 set;
set = FIELD_PREP(YTPHY_CCR_MODE_SEL_MASK, mode);
ret = ytphy_modify_ext(phydev,
YT8531_CHIP_CONFIG_REG,
YTPHY_CCR_MODE_SEL_MASK,
set);
if (ret < 0)
return ret;
ret = yt8821_serdes_init(phydev);
if (ret < 0)
return ret;
ret = yt8821_utp_init(phydev);
if (ret < 0)
return ret;
ret = yt8821_auto_sleep_config(phydev, false);
if (ret < 0)
return ret;
return yt8821_soft_reset(phydev);
}
static void yt8821_parse_status(struct phy_device *phydev, int val)
{
int speed_mode;
int speed;
speed_mode = val & YTPHY_SPEED_MASK;
switch (speed_mode) {
case YTPHY_SPEED_2500M:
speed = SPEED_2500;
break;
case YTPHY_SPEED_1000M:
speed = SPEED_1000;
break;
case YTPHY_SPEED_100M:
speed = SPEED_100;
break;
case YTPHY_SPEED_10M:
speed = SPEED_10;
break;
}
phydev->speed = speed;
phydev->duplex = FIELD_GET(YTPHY_DUPLEX_MASK, val);
}
static int yt8821_startup(struct phy_device *phydev)
{
u16 val;
int ret;
ret = ytphy_modify_ext(phydev, YTPHY_REG_SPACE_SELECT_REG,
YTPHY_RSSR_SPACE_MASK,
YTPHY_RSSR_UTP_SPACE);
if (ret)
return ret;
ret = genphy_update_link(phydev);
if (ret)
return ret;
ret = phy_read(phydev, MDIO_DEVAD_NONE,
YTPHY_SPECIFIC_STATUS_REG);
if (ret < 0)
return ret;
val = ret;
if (phydev->link)
yt8821_parse_status(phydev, val);
return 0;
}
U_BOOT_PHY_DRIVER(motorcomm8511) = {
.name = "YT8511 Gigabit Ethernet",
.uid = PHY_ID_YT8511,
@@ -654,3 +1134,14 @@ U_BOOT_PHY_DRIVER(motorcomm8531) = {
.startup = &yt8531_startup,
.shutdown = &genphy_shutdown,
};
U_BOOT_PHY_DRIVER(motorcomm8821) = {
.name = "YT8821 2.5G Ethernet",
.uid = PHY_ID_YT8821,
.mask = PHY_ID_MASK,
.mmds = (MDIO_MMD_PMAPMD | MDIO_MMD_PCS | MDIO_MMD_AN),
.probe = &yt8821_probe,
.config = &yt8821_config,
.startup = &yt8821_startup,
.shutdown = &genphy_shutdown,
};