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Add support for dual reference clock multilink configurations. Add register sequences for PCIe(100MHz) + USXGMII(156.25MHz) multilink configuration. PCIe uses PLL0 and USXGMII uses PLL1. Signed-off-by: Swapnil Jakhade Reviewed-by: Roger Quadros --- drivers/phy/cadence/phy-cadence-torrent.c | 209 +++++++++++++++++++++- 1 file changed, 200 insertions(+), 9 deletions(-) diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c index a75c96385c57..d22ffc97bce9 100644 --- a/drivers/phy/cadence/phy-cadence-torrent.c +++ b/drivers/phy/cadence/phy-cadence-torrent.c @@ -355,7 +355,9 @@ struct cdns_torrent_phy { struct reset_control *apb_rst; struct device *dev; struct clk *clk; + struct clk *clk1; enum cdns_torrent_ref_clk ref_clk_rate; + enum cdns_torrent_ref_clk ref_clk1_rate; struct cdns_torrent_inst phys[MAX_NUM_LANES]; int nsubnodes; const struct cdns_torrent_data *init_data; @@ -2460,9 +2462,11 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy) { const struct cdns_torrent_data *init_data = cdns_phy->init_data; struct cdns_torrent_vals *cmn_vals, *tx_ln_vals, *rx_ln_vals; + enum cdns_torrent_ref_clk ref_clk1 = cdns_phy->ref_clk1_rate; enum cdns_torrent_ref_clk ref_clk = cdns_phy->ref_clk_rate; struct cdns_torrent_vals *link_cmn_vals, *xcvr_diag_vals; enum cdns_torrent_phy_type phy_t1, phy_t2; + struct cdns_torrent_vals *phy_pma_cmn_vals; struct cdns_torrent_vals *pcs_cmn_vals; int i, j, node, mlane, num_lanes, ret; struct cdns_reg_pairs *reg_pairs; @@ -2489,6 +2493,7 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy) * Get the array values as [phy_t2][phy_t1][ssc]. */ swap(phy_t1, phy_t2); + swap(ref_clk, ref_clk1); } mlane = cdns_phy->phys[node].mlane; @@ -2552,9 +2557,22 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy) reg_pairs[i].val); } + /* PHY PMA common registers configurations */ + phy_pma_cmn_vals = cdns_torrent_get_tbl_vals(&init_data->phy_pma_cmn_vals_tbl, + CLK_ANY, CLK_ANY, + phy_t1, phy_t2, ANY_SSC); + if (phy_pma_cmn_vals) { + reg_pairs = phy_pma_cmn_vals->reg_pairs; + num_regs = phy_pma_cmn_vals->num_regs; + regmap = cdns_phy->regmap_phy_pma_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 = cdns_torrent_get_tbl_vals(&init_data->cmn_vals_tbl, - ref_clk, ref_clk, + ref_clk, ref_clk1, phy_t1, phy_t2, ssc); if (cmn_vals) { reg_pairs = cmn_vals->reg_pairs; @@ -2567,7 +2585,7 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy) /* PMA TX lane registers configurations */ tx_ln_vals = cdns_torrent_get_tbl_vals(&init_data->tx_ln_vals_tbl, - ref_clk, ref_clk, + ref_clk, ref_clk1, phy_t1, phy_t2, ssc); if (tx_ln_vals) { reg_pairs = tx_ln_vals->reg_pairs; @@ -2582,7 +2600,7 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy) /* PMA RX lane registers configurations */ rx_ln_vals = cdns_torrent_get_tbl_vals(&init_data->rx_ln_vals_tbl, - ref_clk, ref_clk, + ref_clk, ref_clk1, phy_t1, phy_t2, ssc); if (rx_ln_vals) { reg_pairs = rx_ln_vals->reg_pairs; @@ -2684,9 +2702,11 @@ static int cdns_torrent_reset(struct cdns_torrent_phy *cdns_phy) static int cdns_torrent_clk(struct cdns_torrent_phy *cdns_phy) { struct device *dev = cdns_phy->dev; + unsigned long ref_clk1_rate; unsigned long ref_clk_rate; int ret; + /* refclk: Input reference clock for PLL0 */ cdns_phy->clk = devm_clk_get(dev, "refclk"); if (IS_ERR(cdns_phy->clk)) { dev_err(dev, "phy ref clock not found\n"); @@ -2695,15 +2715,15 @@ static int cdns_torrent_clk(struct cdns_torrent_phy *cdns_phy) ret = clk_prepare_enable(cdns_phy->clk); if (ret) { - dev_err(cdns_phy->dev, "Failed to prepare ref clock\n"); + dev_err(cdns_phy->dev, "Failed to prepare ref clock: %d\n", ret); return ret; } ref_clk_rate = clk_get_rate(cdns_phy->clk); if (!ref_clk_rate) { dev_err(cdns_phy->dev, "Failed to get ref clock rate\n"); - clk_disable_unprepare(cdns_phy->clk); - return -EINVAL; + ret = -EINVAL; + goto disable_clk; } switch (ref_clk_rate) { @@ -2720,12 +2740,62 @@ static int cdns_torrent_clk(struct cdns_torrent_phy *cdns_phy) cdns_phy->ref_clk_rate = CLK_156_25_MHZ; break; default: - dev_err(cdns_phy->dev, "Invalid Ref Clock Rate\n"); - clk_disable_unprepare(cdns_phy->clk); - return -EINVAL; + dev_err(cdns_phy->dev, "Invalid ref clock rate\n"); + ret = -EINVAL; + goto disable_clk; + } + + /* refclk1: Input reference clock for PLL1 */ + cdns_phy->clk1 = devm_clk_get_optional(dev, "pll1_refclk"); + if (IS_ERR(cdns_phy->clk1)) { + dev_err(dev, "phy PLL1 ref clock not found\n"); + ret = PTR_ERR(cdns_phy->clk1); + goto disable_clk; + } + + if (cdns_phy->clk1) { + ret = clk_prepare_enable(cdns_phy->clk1); + if (ret) { + dev_err(cdns_phy->dev, "Failed to prepare PLL1 ref clock: %d\n", ret); + goto disable_clk; + } + + ref_clk1_rate = clk_get_rate(cdns_phy->clk1); + if (!ref_clk1_rate) { + dev_err(cdns_phy->dev, "Failed to get PLL1 ref clock rate\n"); + ret = -EINVAL; + goto disable_clk1; + } + + switch (ref_clk1_rate) { + case REF_CLK_19_2MHZ: + cdns_phy->ref_clk1_rate = CLK_19_2_MHZ; + break; + case REF_CLK_25MHZ: + cdns_phy->ref_clk1_rate = CLK_25_MHZ; + break; + case REF_CLK_100MHZ: + cdns_phy->ref_clk1_rate = CLK_100_MHZ; + break; + case REF_CLK_156_25MHZ: + cdns_phy->ref_clk1_rate = CLK_156_25_MHZ; + break; + default: + dev_err(cdns_phy->dev, "Invalid PLL1 ref clock rate\n"); + ret = -EINVAL; + goto disable_clk1; + } + } else { + cdns_phy->ref_clk1_rate = cdns_phy->ref_clk_rate; } return 0; + +disable_clk1: + clk_disable_unprepare(cdns_phy->clk1); +disable_clk: + clk_disable_unprepare(cdns_phy->clk); + return ret; } static int cdns_torrent_phy_probe(struct platform_device *pdev) @@ -2980,6 +3050,7 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev) reset_control_put(cdns_phy->phys[i].lnk_rst); of_node_put(child); reset_control_assert(cdns_phy->apb_rst); + clk_disable_unprepare(cdns_phy->clk1); clk_disable_unprepare(cdns_phy->clk); clk_cleanup: cdns_torrent_clk_cleanup(cdns_phy); @@ -2998,6 +3069,7 @@ static void cdns_torrent_phy_remove(struct platform_device *pdev) reset_control_put(cdns_phy->phys[i].lnk_rst); } + clk_disable_unprepare(cdns_phy->clk1); clk_disable_unprepare(cdns_phy->clk); cdns_torrent_clk_cleanup(cdns_phy); } @@ -3034,6 +3106,100 @@ static struct cdns_torrent_vals dp_usb_xcvr_diag_ln_vals = { .num_regs = ARRAY_SIZE(dp_usb_xcvr_diag_ln_regs), }; +/* PCIe and USXGMII link configuration */ +static struct cdns_reg_pairs pcie_usxgmii_link_cmn_regs[] = { + {0x0003, PHY_PLL_CFG}, + {0x0601, CMN_PDIAG_PLL0_CLK_SEL_M0}, + {0x0400, CMN_PDIAG_PLL0_CLK_SEL_M1}, + {0x0400, CMN_PDIAG_PLL1_CLK_SEL_M0} +}; + +static struct cdns_reg_pairs pcie_usxgmii_xcvr_diag_ln_regs[] = { + {0x0000, XCVR_DIAG_HSCLK_SEL}, + {0x0001, XCVR_DIAG_HSCLK_DIV}, + {0x0012, XCVR_DIAG_PLLDRC_CTRL} +}; + +static struct cdns_reg_pairs usxgmii_pcie_xcvr_diag_ln_regs[] = { + {0x0011, XCVR_DIAG_HSCLK_SEL}, + {0x0001, XCVR_DIAG_HSCLK_DIV}, + {0x0089, XCVR_DIAG_PLLDRC_CTRL} +}; + +static struct cdns_torrent_vals pcie_usxgmii_link_cmn_vals = { + .reg_pairs = pcie_usxgmii_link_cmn_regs, + .num_regs = ARRAY_SIZE(pcie_usxgmii_link_cmn_regs), +}; + +static struct cdns_torrent_vals pcie_usxgmii_xcvr_diag_ln_vals = { + .reg_pairs = pcie_usxgmii_xcvr_diag_ln_regs, + .num_regs = ARRAY_SIZE(pcie_usxgmii_xcvr_diag_ln_regs), +}; + +static struct cdns_torrent_vals usxgmii_pcie_xcvr_diag_ln_vals = { + .reg_pairs = usxgmii_pcie_xcvr_diag_ln_regs, + .num_regs = ARRAY_SIZE(usxgmii_pcie_xcvr_diag_ln_regs), +}; + +/* + * Multilink USXGMII, using PLL1, 156.25 MHz Ref clk, no SSC + */ +static struct cdns_reg_pairs ml_usxgmii_pll1_156_25_no_ssc_cmn_regs[] = { + {0x0028, CMN_PDIAG_PLL1_CP_PADJ_M0}, + {0x0014, CMN_PLL1_DSM_FBH_OVRD_M0}, + {0x0005, CMN_PLL1_DSM_FBL_OVRD_M0}, + {0x061B, CMN_PLL1_VCOCAL_INIT_TMR}, + {0x0019, CMN_PLL1_VCOCAL_ITER_TMR}, + {0x1354, CMN_PLL1_VCOCAL_REFTIM_START}, + {0x1354, CMN_PLL1_VCOCAL_PLLCNT_START}, + {0x0003, CMN_PLL1_VCOCAL_TCTRL}, + {0x0138, CMN_PLL1_LOCK_REFCNT_START}, + {0x0138, CMN_PLL1_LOCK_PLLCNT_START}, + {0x007F, CMN_TXPUCAL_TUNE}, + {0x007F, CMN_TXPDCAL_TUNE} +}; + +static struct cdns_reg_pairs ml_usxgmii_156_25_no_ssc_tx_ln_regs[] = { + {0x00F3, TX_PSC_A0}, + {0x04A2, TX_PSC_A2}, + {0x04A2, TX_PSC_A3 }, + {0x0000, TX_TXCC_CPOST_MULT_00}, + {0x0000, XCVR_DIAG_PSC_OVRD} +}; + +static struct cdns_reg_pairs ml_usxgmii_156_25_no_ssc_rx_ln_regs[] = { + {0x091D, RX_PSC_A0}, + {0x0900, RX_PSC_A2}, + {0x0100, RX_PSC_A3}, + {0x0030, RX_REE_SMGM_CTRL1}, + {0x03C7, RX_REE_GCSM1_EQENM_PH1}, + {0x01C7, RX_REE_GCSM1_EQENM_PH2}, + {0x0000, RX_DIAG_DFE_CTRL}, + {0x0019, RX_REE_TAP1_CLIP}, + {0x0019, RX_REE_TAP2TON_CLIP}, + {0x00B9, RX_DIAG_NQST_CTRL}, + {0x0C21, RX_DIAG_DFE_AMP_TUNE_2}, + {0x0002, RX_DIAG_DFE_AMP_TUNE_3}, + {0x0033, RX_DIAG_PI_RATE}, + {0x0001, RX_DIAG_ACYA}, + {0x018C, RX_CDRLF_CNFG} +}; + +static struct cdns_torrent_vals ml_usxgmii_pll1_156_25_no_ssc_cmn_vals = { + .reg_pairs = ml_usxgmii_pll1_156_25_no_ssc_cmn_regs, + .num_regs = ARRAY_SIZE(ml_usxgmii_pll1_156_25_no_ssc_cmn_regs), +}; + +static struct cdns_torrent_vals ml_usxgmii_156_25_no_ssc_tx_ln_vals = { + .reg_pairs = ml_usxgmii_156_25_no_ssc_tx_ln_regs, + .num_regs = ARRAY_SIZE(ml_usxgmii_156_25_no_ssc_tx_ln_regs), +}; + +static struct cdns_torrent_vals ml_usxgmii_156_25_no_ssc_rx_ln_vals = { + .reg_pairs = ml_usxgmii_156_25_no_ssc_rx_ln_regs, + .num_regs = ARRAY_SIZE(ml_usxgmii_156_25_no_ssc_rx_ln_regs), +}; + /* TI USXGMII configuration: Enable cmn_refclk_rcv_out_en */ static struct cdns_reg_pairs ti_usxgmii_phy_pma_cmn_regs[] = { {0x0040, PHY_PMA_CMN_CTRL1}, @@ -4166,6 +4332,7 @@ static struct cdns_torrent_vals_entry link_cmn_vals_entries[] = { {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_QSGMII), &pcie_sgmii_link_cmn_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_USB), &pcie_usb_link_cmn_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_DP), &pcie_dp_link_cmn_vals}, + {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_USXGMII), &pcie_usxgmii_link_cmn_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_SGMII, TYPE_NONE), &sl_sgmii_link_cmn_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_SGMII, TYPE_PCIE), &pcie_sgmii_link_cmn_vals}, @@ -4182,6 +4349,7 @@ static struct cdns_torrent_vals_entry link_cmn_vals_entries[] = { {CDNS_TORRENT_KEY_ANYCLK(TYPE_USB, TYPE_DP), &usb_dp_link_cmn_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_USXGMII, TYPE_NONE), &sl_usxgmii_link_cmn_vals}, + {CDNS_TORRENT_KEY_ANYCLK(TYPE_USXGMII, TYPE_PCIE), &pcie_usxgmii_link_cmn_vals}, }; static struct cdns_torrent_vals_entry xcvr_diag_vals_entries[] = { @@ -4194,6 +4362,7 @@ static struct cdns_torrent_vals_entry xcvr_diag_vals_entries[] = { {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_QSGMII), &pcie_sgmii_xcvr_diag_ln_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_USB), &pcie_usb_xcvr_diag_ln_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_DP), &pcie_dp_xcvr_diag_ln_vals}, + {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_USXGMII), &pcie_usxgmii_xcvr_diag_ln_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_SGMII, TYPE_NONE), &sl_sgmii_xcvr_diag_ln_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_SGMII, TYPE_PCIE), &sgmii_pcie_xcvr_diag_ln_vals}, @@ -4210,6 +4379,7 @@ static struct cdns_torrent_vals_entry xcvr_diag_vals_entries[] = { {CDNS_TORRENT_KEY_ANYCLK(TYPE_USB, TYPE_DP), &usb_dp_xcvr_diag_ln_vals}, {CDNS_TORRENT_KEY_ANYCLK(TYPE_USXGMII, TYPE_NONE), &sl_usxgmii_xcvr_diag_ln_vals}, + {CDNS_TORRENT_KEY_ANYCLK(TYPE_USXGMII, TYPE_PCIE), &usxgmii_pcie_xcvr_diag_ln_vals}, }; static struct cdns_torrent_vals_entry pcs_cmn_vals_entries[] = { @@ -4285,6 +4455,11 @@ static struct cdns_torrent_vals_entry cmn_vals_entries[] = { {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_USB, TYPE_DP, NO_SSC), &usb_100_no_ssc_cmn_vals}, {CDNS_TORRENT_KEY(CLK_156_25_MHZ, CLK_156_25_MHZ, TYPE_USXGMII, TYPE_NONE, NO_SSC), &sl_usxgmii_156_25_no_ssc_cmn_vals}, + + /* Dual refclk */ + {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_156_25_MHZ, TYPE_PCIE, TYPE_USXGMII, NO_SSC), NULL}, + + {CDNS_TORRENT_KEY(CLK_156_25_MHZ, CLK_100_MHZ, TYPE_USXGMII, TYPE_PCIE, NO_SSC), &ml_usxgmii_pll1_156_25_no_ssc_cmn_vals}, }; static struct cdns_torrent_vals_entry cdns_tx_ln_vals_entries[] = { @@ -4352,6 +4527,11 @@ static struct cdns_torrent_vals_entry cdns_tx_ln_vals_entries[] = { {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_USB, TYPE_DP, NO_SSC), &usb_100_no_ssc_tx_ln_vals}, {CDNS_TORRENT_KEY(CLK_156_25_MHZ, CLK_156_25_MHZ, TYPE_USXGMII, TYPE_NONE, NO_SSC), &usxgmii_156_25_no_ssc_tx_ln_vals}, + + /* Dual refclk */ + {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_156_25_MHZ, TYPE_PCIE, TYPE_USXGMII, NO_SSC), NULL}, + + {CDNS_TORRENT_KEY(CLK_156_25_MHZ, CLK_100_MHZ, TYPE_USXGMII, TYPE_PCIE, NO_SSC), &ml_usxgmii_156_25_no_ssc_tx_ln_vals}, }; static struct cdns_torrent_vals_entry cdns_rx_ln_vals_entries[] = { @@ -4419,6 +4599,11 @@ static struct cdns_torrent_vals_entry cdns_rx_ln_vals_entries[] = { {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_USB, TYPE_DP, NO_SSC), &usb_100_no_ssc_rx_ln_vals}, {CDNS_TORRENT_KEY(CLK_156_25_MHZ, CLK_156_25_MHZ, TYPE_USXGMII, TYPE_NONE, NO_SSC), &usxgmii_156_25_no_ssc_rx_ln_vals}, + + /* Dual refclk */ + {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_156_25_MHZ, TYPE_PCIE, TYPE_USXGMII, NO_SSC), &pcie_100_no_ssc_rx_ln_vals}, + + {CDNS_TORRENT_KEY(CLK_156_25_MHZ, CLK_100_MHZ, TYPE_USXGMII, TYPE_PCIE, NO_SSC), &ml_usxgmii_156_25_no_ssc_rx_ln_vals}, }; static const struct cdns_torrent_data cdns_map_torrent = { @@ -4452,6 +4637,7 @@ static const struct cdns_torrent_data cdns_map_torrent = { static struct cdns_torrent_vals_entry j721e_phy_pma_cmn_vals_entries[] = { {CDNS_TORRENT_KEY_ANYCLK(TYPE_USXGMII, TYPE_NONE), &ti_usxgmii_phy_pma_cmn_vals}, + {CDNS_TORRENT_KEY_ANYCLK(TYPE_USXGMII, TYPE_PCIE), &ti_usxgmii_phy_pma_cmn_vals}, }; static struct cdns_torrent_vals_entry ti_tx_ln_vals_entries[] = { @@ -4519,6 +4705,11 @@ static struct cdns_torrent_vals_entry ti_tx_ln_vals_entries[] = { {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_USB, TYPE_DP, NO_SSC), &usb_100_no_ssc_tx_ln_vals}, {CDNS_TORRENT_KEY(CLK_156_25_MHZ, CLK_156_25_MHZ, TYPE_USXGMII, TYPE_NONE, NO_SSC), &usxgmii_156_25_no_ssc_tx_ln_vals}, + + /* Dual refclk */ + {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_156_25_MHZ, TYPE_PCIE, TYPE_USXGMII, NO_SSC), NULL}, + + {CDNS_TORRENT_KEY(CLK_156_25_MHZ, CLK_100_MHZ, TYPE_USXGMII, TYPE_PCIE, NO_SSC), &ml_usxgmii_156_25_no_ssc_tx_ln_vals}, }; static const struct cdns_torrent_data ti_j721e_map_torrent = {