[PATCH v2 11/13] phy: cadence-torrent: Add single link USB register sequences

From: Swapnil Jakhade
Date: Thu Aug 27 2020 - 12:18:07 EST

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Add support for single link USB configuration.

Signed-off-by: Swapnil Jakhade <sjakhade@xxxxxxxxxxx>
---
drivers/phy/cadence/phy-cadence-torrent.c | 260 +++++++++++++++++++++-
1 file changed, 259 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index 5bc9bbddcc9c..a444184acca3 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -29,7 +29,7 @@
#define DEFAULT_MAX_BIT_RATE 8100 /* in Mbps */

#define NUM_SSC_MODE 3
-#define NUM_PHY_TYPE 5
+#define NUM_PHY_TYPE 6

#define POLL_TIMEOUT_US 5000
#define PLL_LOCK_TIMEOUT 100000
@@ -82,6 +82,8 @@
#define CMN_PLLSM0_PLLLOCK_TMR 0x002CU
#define CMN_PLLSM1_PLLPRE_TMR 0x0032U
#define CMN_PLLSM1_PLLLOCK_TMR 0x0034U
+#define CMN_CDIAG_CDB_PWRI_OVRD 0x0041U
+#define CMN_CDIAG_XCVRC_PWRI_OVRD 0x0047U
#define CMN_BGCAL_INIT_TMR 0x0064U
#define CMN_BGCAL_ITER_TMR 0x0065U
#define CMN_IBCAL_INIT_TMR 0x0074U
@@ -159,13 +161,16 @@
/* PMA TX Lane registers */
#define TX_TXCC_CTRL 0x0040U
#define TX_TXCC_CPOST_MULT_00 0x004CU
+#define TX_TXCC_CPOST_MULT_01 0x004DU
#define TX_TXCC_MGNFS_MULT_000 0x0050U
#define DRV_DIAG_TX_DRV 0x00C6U
#define XCVR_DIAG_PLLDRC_CTRL 0x00E5U
#define XCVR_DIAG_HSCLK_SEL 0x00E6U
#define XCVR_DIAG_HSCLK_DIV 0x00E7U
#define XCVR_DIAG_BIDI_CTRL 0x00EAU
+#define XCVR_DIAG_PSC_OVRD 0x00EBU
#define TX_PSC_A0 0x0100U
+#define TX_PSC_A1 0x0101U
#define TX_PSC_A2 0x0102U
#define TX_PSC_A3 0x0103U
#define TX_RCVDET_ST_TMR 0x0123U
@@ -174,27 +179,37 @@

/* PMA RX Lane registers */
#define RX_PSC_A0 0x0000U
+#define RX_PSC_A1 0x0001U
#define RX_PSC_A2 0x0002U
#define RX_PSC_A3 0x0003U
#define RX_PSC_CAL 0x0006U
#define RX_CDRLF_CNFG 0x0080U
+#define RX_CDRLF_CNFG3 0x0082U
+#define RX_SIGDET_HL_FILT_TMR 0x0090U
#define RX_REE_GCSM1_CTRL 0x0108U
#define RX_REE_GCSM1_EQENM_PH1 0x0109U
#define RX_REE_GCSM1_EQENM_PH2 0x010AU
#define RX_REE_GCSM2_CTRL 0x0110U
#define RX_REE_PERGCSM_CTRL 0x0118U
+#define RX_REE_ATTEN_THR 0x0149U
#define RX_REE_TAP1_CLIP 0x0171U
#define RX_REE_TAP2TON_CLIP 0x0172U
+#define RX_REE_SMGM_CTRL1 0x0177U
+#define RX_REE_SMGM_CTRL2 0x0178U
#define RX_DIAG_DFE_CTRL 0x01E0U
#define RX_DIAG_DFE_AMP_TUNE_2 0x01E2U
#define RX_DIAG_DFE_AMP_TUNE_3 0x01E3U
#define RX_DIAG_NQST_CTRL 0x01E5U
+#define RX_DIAG_SIGDET_TUNE 0x01E8U
#define RX_DIAG_PI_RATE 0x01F4U
#define RX_DIAG_PI_CAP 0x01F5U
#define RX_DIAG_ACYA 0x01FFU

/* PHY PCS common registers */
#define PHY_PLL_CFG 0x000EU
+#define PHY_PIPE_USB3_GEN2_PRE_CFG0 0x0020U
+#define PHY_PIPE_USB3_GEN2_POST_CFG0 0x0022U
+#define PHY_PIPE_USB3_GEN2_POST_CFG1 0x0023U

/* PHY PMA common registers */
#define PHY_PMA_CMN_CTRL1 0x0000U
@@ -222,6 +237,7 @@ enum cdns_torrent_phy_type {
TYPE_PCIE,
TYPE_SGMII,
TYPE_QSGMII,
+ TYPE_USB,
};

enum cdns_torrent_ssc_mode {
@@ -327,6 +343,8 @@ struct cdns_torrent_data {
[NUM_SSC_MODE];
struct cdns_torrent_vals *xcvr_diag_vals[NUM_PHY_TYPE][NUM_PHY_TYPE]
[NUM_SSC_MODE];
+ struct cdns_torrent_vals *pcs_cmn_vals[NUM_PHY_TYPE][NUM_PHY_TYPE]
+ [NUM_SSC_MODE];
struct cdns_torrent_vals *cmn_vals[NUM_PHY_TYPE][NUM_PHY_TYPE]
[NUM_SSC_MODE];
struct cdns_torrent_vals *tx_ln_vals[NUM_PHY_TYPE][NUM_PHY_TYPE]
@@ -1813,6 +1831,7 @@ static int cdns_torrent_phy_init(struct phy *phy)
struct cdns_torrent_inst *inst = phy_get_drvdata(phy);
enum cdns_torrent_phy_type phy_type = inst->phy_type;
enum cdns_torrent_ssc_mode ssc = inst->ssc_mode;
+ struct cdns_torrent_vals *pcs_cmn_vals;
struct cdns_reg_pairs *reg_pairs;
struct regmap *regmap;
u32 num_regs;
@@ -1861,6 +1880,17 @@ static int cdns_torrent_phy_init(struct phy *phy)
}
}

+ /* PHY PCS common registers configurations */
+ pcs_cmn_vals = init_data->pcs_cmn_vals[phy_type][TYPE_NONE][ssc];
+ if (pcs_cmn_vals) {
+ reg_pairs = pcs_cmn_vals->reg_pairs;
+ num_regs = pcs_cmn_vals->num_regs;
+ regmap = cdns_phy->regmap_phy_pcs_common_cdb;
+ for (i = 0; i < num_regs; i++)
+ regmap_write(regmap, reg_pairs[i].off,
+ reg_pairs[i].val);
+ }
+
/* PMA common registers configurations */
cmn_vals = init_data->cmn_vals[phy_type][TYPE_NONE][ssc];
if (cmn_vals) {
@@ -2153,6 +2183,9 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
case PHY_TYPE_QSGMII:
cdns_phy->phys[node].phy_type = TYPE_QSGMII;
break;
+ case PHY_TYPE_USB3:
+ cdns_phy->phys[node].phy_type = TYPE_USB;
+ break;
default:
dev_err(dev, "Unsupported protocol\n");
ret = -EINVAL;
@@ -2301,6 +2334,143 @@ static int cdns_torrent_phy_remove(struct platform_device *pdev)
return 0;
}

+/* Single USB link configuration */
+static struct cdns_reg_pairs sl_usb_link_cmn_regs[] = {
+ {0x0000, PHY_PLL_CFG},
+ {0x8600, CMN_PDIAG_PLL0_CLK_SEL_M0}
+};
+
+static struct cdns_reg_pairs sl_usb_xcvr_diag_ln_regs[] = {
+ {0x0000, XCVR_DIAG_HSCLK_SEL},
+ {0x0001, XCVR_DIAG_HSCLK_DIV},
+ {0x0041, XCVR_DIAG_PLLDRC_CTRL}
+};
+
+static struct cdns_torrent_vals sl_usb_link_cmn_vals = {
+ .reg_pairs = sl_usb_link_cmn_regs,
+ .num_regs = ARRAY_SIZE(sl_usb_link_cmn_regs),
+};
+
+static struct cdns_torrent_vals sl_usb_xcvr_diag_ln_vals = {
+ .reg_pairs = sl_usb_xcvr_diag_ln_regs,
+ .num_regs = ARRAY_SIZE(sl_usb_xcvr_diag_ln_regs),
+};
+
+/* USB PHY PCS common configuration */
+static struct cdns_reg_pairs usb_phy_pcs_cmn_regs[] = {
+ {0x0A0A, PHY_PIPE_USB3_GEN2_PRE_CFG0},
+ {0x1000, PHY_PIPE_USB3_GEN2_POST_CFG0},
+ {0x0010, PHY_PIPE_USB3_GEN2_POST_CFG1}
+};
+
+static struct cdns_torrent_vals usb_phy_pcs_cmn_vals = {
+ .reg_pairs = usb_phy_pcs_cmn_regs,
+ .num_regs = ARRAY_SIZE(usb_phy_pcs_cmn_regs),
+};
+
+/* USB 100 MHz Ref clk, no SSC */
+static struct cdns_reg_pairs usb_100_no_ssc_cmn_regs[] = {
+ {0x0003, CMN_PLL0_VCOCAL_TCTRL},
+ {0x0003, CMN_PLL1_VCOCAL_TCTRL},
+ {0x8200, CMN_CDIAG_CDB_PWRI_OVRD},
+ {0x8200, CMN_CDIAG_XCVRC_PWRI_OVRD}
+};
+
+static struct cdns_reg_pairs usb_100_no_ssc_tx_ln_regs[] = {
+ {0x02FF, TX_PSC_A0},
+ {0x06AF, TX_PSC_A1},
+ {0x06AE, TX_PSC_A2},
+ {0x06AE, TX_PSC_A3},
+ {0x2A82, TX_TXCC_CTRL},
+ {0x0014, TX_TXCC_CPOST_MULT_01},
+ {0x0003, XCVR_DIAG_PSC_OVRD}
+};
+
+static struct cdns_reg_pairs usb_100_no_ssc_rx_ln_regs[] = {
+ {0x0D1D, RX_PSC_A0},
+ {0x0D1D, RX_PSC_A1},
+ {0x0D00, RX_PSC_A2},
+ {0x0500, RX_PSC_A3},
+ {0x0013, RX_SIGDET_HL_FILT_TMR},
+ {0x0000, RX_REE_GCSM1_CTRL},
+ {0x0C02, RX_REE_ATTEN_THR},
+ {0x0330, RX_REE_SMGM_CTRL1},
+ {0x0300, RX_REE_SMGM_CTRL2},
+ {0x0019, RX_REE_TAP1_CLIP},
+ {0x0019, RX_REE_TAP2TON_CLIP},
+ {0x1004, RX_DIAG_SIGDET_TUNE},
+ {0x00F9, RX_DIAG_NQST_CTRL},
+ {0x0C01, RX_DIAG_DFE_AMP_TUNE_2},
+ {0x0002, RX_DIAG_DFE_AMP_TUNE_3},
+ {0x0000, RX_DIAG_PI_CAP},
+ {0x0031, RX_DIAG_PI_RATE},
+ {0x0001, RX_DIAG_ACYA},
+ {0x018C, RX_CDRLF_CNFG},
+ {0x0003, RX_CDRLF_CNFG3}
+};
+
+static struct cdns_torrent_vals usb_100_no_ssc_cmn_vals = {
+ .reg_pairs = usb_100_no_ssc_cmn_regs,
+ .num_regs = ARRAY_SIZE(usb_100_no_ssc_cmn_regs),
+};
+
+static struct cdns_torrent_vals usb_100_no_ssc_tx_ln_vals = {
+ .reg_pairs = usb_100_no_ssc_tx_ln_regs,
+ .num_regs = ARRAY_SIZE(usb_100_no_ssc_tx_ln_regs),
+};
+
+static struct cdns_torrent_vals usb_100_no_ssc_rx_ln_vals = {
+ .reg_pairs = usb_100_no_ssc_rx_ln_regs,
+ .num_regs = ARRAY_SIZE(usb_100_no_ssc_rx_ln_regs),
+};
+
+/* Single link USB, 100 MHz Ref clk, internal SSC */
+static struct cdns_reg_pairs sl_usb_100_int_ssc_cmn_regs[] = {
+ {0x0004, CMN_PLL0_DSM_DIAG_M0},
+ {0x0004, CMN_PLL1_DSM_DIAG_M0},
+ {0x0509, CMN_PDIAG_PLL0_CP_PADJ_M0},
+ {0x0509, CMN_PDIAG_PLL1_CP_PADJ_M0},
+ {0x0F00, CMN_PDIAG_PLL0_CP_IADJ_M0},
+ {0x0F00, CMN_PDIAG_PLL1_CP_IADJ_M0},
+ {0x0F08, CMN_PDIAG_PLL0_FILT_PADJ_M0},
+ {0x0F08, CMN_PDIAG_PLL1_FILT_PADJ_M0},
+ {0x0064, CMN_PLL0_INTDIV_M0},
+ {0x0064, CMN_PLL1_INTDIV_M0},
+ {0x0002, CMN_PLL0_FRACDIVH_M0},
+ {0x0002, CMN_PLL1_FRACDIVH_M0},
+ {0x0044, CMN_PLL0_HIGH_THR_M0},
+ {0x0044, CMN_PLL1_HIGH_THR_M0},
+ {0x0002, CMN_PDIAG_PLL0_CTRL_M0},
+ {0x0002, CMN_PDIAG_PLL1_CTRL_M0},
+ {0x0001, CMN_PLL0_SS_CTRL1_M0},
+ {0x0001, CMN_PLL1_SS_CTRL1_M0},
+ {0x011B, CMN_PLL0_SS_CTRL2_M0},
+ {0x011B, CMN_PLL1_SS_CTRL2_M0},
+ {0x006E, CMN_PLL0_SS_CTRL3_M0},
+ {0x006E, CMN_PLL1_SS_CTRL3_M0},
+ {0x000E, CMN_PLL0_SS_CTRL4_M0},
+ {0x000E, CMN_PLL1_SS_CTRL4_M0},
+ {0x0C5E, CMN_PLL0_VCOCAL_REFTIM_START},
+ {0x0C5E, CMN_PLL1_VCOCAL_REFTIM_START},
+ {0x0C56, CMN_PLL0_VCOCAL_PLLCNT_START},
+ {0x0C56, CMN_PLL1_VCOCAL_PLLCNT_START},
+ {0x0003, CMN_PLL0_VCOCAL_TCTRL},
+ {0x0003, CMN_PLL1_VCOCAL_TCTRL},
+ {0x00C7, CMN_PLL0_LOCK_REFCNT_START},
+ {0x00C7, CMN_PLL1_LOCK_REFCNT_START},
+ {0x00C7, CMN_PLL0_LOCK_PLLCNT_START},
+ {0x00C7, CMN_PLL1_LOCK_PLLCNT_START},
+ {0x0005, CMN_PLL0_LOCK_PLLCNT_THR},
+ {0x0005, CMN_PLL1_LOCK_PLLCNT_THR},
+ {0x8200, CMN_CDIAG_CDB_PWRI_OVRD},
+ {0x8200, CMN_CDIAG_XCVRC_PWRI_OVRD}
+};
+
+static struct cdns_torrent_vals sl_usb_100_int_ssc_cmn_vals = {
+ .reg_pairs = sl_usb_100_int_ssc_cmn_regs,
+ .num_regs = ARRAY_SIZE(sl_usb_100_int_ssc_cmn_regs),
+};
+
/* PCIe and SGMII/QSGMII Unique SSC link configuration */
static struct cdns_reg_pairs pcie_sgmii_link_cmn_regs[] = {
{0x0003, PHY_PLL_CFG},
@@ -2749,6 +2919,13 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[INTERNAL_SSC] = &pcie_sgmii_link_cmn_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_usb_link_cmn_vals,
+ [EXTERNAL_SSC] = &sl_usb_link_cmn_vals,
+ [INTERNAL_SSC] = &sl_usb_link_cmn_vals,
+ },
+ },
},
.xcvr_diag_vals = {
[TYPE_PCIE] = {
@@ -2788,6 +2965,22 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[INTERNAL_SSC] = &sgmii_pcie_xcvr_diag_ln_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_usb_xcvr_diag_ln_vals,
+ [EXTERNAL_SSC] = &sl_usb_xcvr_diag_ln_vals,
+ [INTERNAL_SSC] = &sl_usb_xcvr_diag_ln_vals,
+ },
+ },
+ },
+ .pcs_cmn_vals = {
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &usb_phy_pcs_cmn_vals,
+ [EXTERNAL_SSC] = &usb_phy_pcs_cmn_vals,
+ [INTERNAL_SSC] = &usb_phy_pcs_cmn_vals,
+ },
+ },
},
.cmn_vals = {
[TYPE_PCIE] = {
@@ -2827,6 +3020,13 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[INTERNAL_SSC] = &qsgmii_100_int_ssc_cmn_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &usb_100_no_ssc_cmn_vals,
+ [EXTERNAL_SSC] = &usb_100_no_ssc_cmn_vals,
+ [INTERNAL_SSC] = &sl_usb_100_int_ssc_cmn_vals,
+ },
+ },
},
.tx_ln_vals = {
[TYPE_PCIE] = {
@@ -2866,6 +3066,13 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[INTERNAL_SSC] = &qsgmii_100_no_ssc_tx_ln_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &usb_100_no_ssc_tx_ln_vals,
+ [EXTERNAL_SSC] = &usb_100_no_ssc_tx_ln_vals,
+ [INTERNAL_SSC] = &usb_100_no_ssc_tx_ln_vals,
+ },
+ },
},
.rx_ln_vals = {
[TYPE_PCIE] = {
@@ -2905,6 +3112,13 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[INTERNAL_SSC] = &qsgmii_100_no_ssc_rx_ln_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &usb_100_no_ssc_rx_ln_vals,
+ [EXTERNAL_SSC] = &usb_100_no_ssc_rx_ln_vals,
+ [INTERNAL_SSC] = &usb_100_no_ssc_rx_ln_vals,
+ },
+ },
},
};

@@ -2949,6 +3163,13 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[INTERNAL_SSC] = &pcie_sgmii_link_cmn_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_usb_link_cmn_vals,
+ [EXTERNAL_SSC] = &sl_usb_link_cmn_vals,
+ [INTERNAL_SSC] = &sl_usb_link_cmn_vals,
+ },
+ },
},
.xcvr_diag_vals = {
[TYPE_PCIE] = {
@@ -2988,6 +3209,22 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[INTERNAL_SSC] = &sgmii_pcie_xcvr_diag_ln_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_usb_xcvr_diag_ln_vals,
+ [EXTERNAL_SSC] = &sl_usb_xcvr_diag_ln_vals,
+ [INTERNAL_SSC] = &sl_usb_xcvr_diag_ln_vals,
+ },
+ },
+ },
+ .pcs_cmn_vals = {
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &usb_phy_pcs_cmn_vals,
+ [EXTERNAL_SSC] = &usb_phy_pcs_cmn_vals,
+ [INTERNAL_SSC] = &usb_phy_pcs_cmn_vals,
+ },
+ },
},
.cmn_vals = {
[TYPE_PCIE] = {
@@ -3027,6 +3264,13 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[INTERNAL_SSC] = &qsgmii_100_int_ssc_cmn_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &usb_100_no_ssc_cmn_vals,
+ [EXTERNAL_SSC] = &usb_100_no_ssc_cmn_vals,
+ [INTERNAL_SSC] = &sl_usb_100_int_ssc_cmn_vals,
+ },
+ },
},
.tx_ln_vals = {
[TYPE_PCIE] = {
@@ -3066,6 +3310,13 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[INTERNAL_SSC] = &qsgmii_100_no_ssc_tx_ln_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &usb_100_no_ssc_tx_ln_vals,
+ [EXTERNAL_SSC] = &usb_100_no_ssc_tx_ln_vals,
+ [INTERNAL_SSC] = &usb_100_no_ssc_tx_ln_vals,
+ },
+ },
},
.rx_ln_vals = {
[TYPE_PCIE] = {
@@ -3105,6 +3356,13 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[INTERNAL_SSC] = &qsgmii_100_no_ssc_rx_ln_vals,
},
},
+ [TYPE_USB] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &usb_100_no_ssc_rx_ln_vals,
+ [EXTERNAL_SSC] = &usb_100_no_ssc_rx_ln_vals,
+ [INTERNAL_SSC] = &usb_100_no_ssc_rx_ln_vals,
+ },
+ },
},
};

--
2.26.1

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