[PATCH v3 6/9] phy: cadence-torrent: Add PHY configuration for DP with 100MHz ref clock

From: Swapnil Jakhade
Date: Wed Jul 28 2021 - 10:55:49 EST

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Add PHY configuration registers for single link DP with 100MHz reference
clock and NO_SSC.

Signed-off-by: Swapnil Jakhade <sjakhade@xxxxxxxxxxx>
---
drivers/phy/cadence/phy-cadence-torrent.c | 162 ++++++++++++++++++++++
1 file changed, 162 insertions(+)

diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index a6331927d775..69466481af26 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -103,6 +103,7 @@
#define CMN_PLL0_FRACDIVH_M0 0x0092U
#define CMN_PLL0_HIGH_THR_M0 0x0093U
#define CMN_PLL0_DSM_DIAG_M0 0x0094U
+#define CMN_PLL0_DSM_FBH_OVRD_M0 0x0095U
#define CMN_PLL0_SS_CTRL1_M0 0x0098U
#define CMN_PLL0_SS_CTRL2_M0 0x0099U
#define CMN_PLL0_SS_CTRL3_M0 0x009AU
@@ -816,6 +817,89 @@ void cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(struct cdns_torrent_phy *cdns_phy,
cdns_torrent_phy_write(regmap, CMN_PLL1_LOCK_PLLCNT_START, 0x00C7);
}

+static
+void cdns_torrent_dp_pma_cmn_vco_cfg_100mhz(struct cdns_torrent_phy *cdns_phy,
+ u32 rate, bool ssc)
+{
+ struct regmap *regmap = cdns_phy->regmap_common_cdb;
+
+ /* Assumes 100 MHz refclock */
+ switch (rate) {
+ /* Setting VCO for 10.8GHz */
+ case 2700:
+ case 5400:
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0028);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_FBH_OVRD_M0, 0x0022);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_FBH_OVRD_M0, 0x0022);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_FBL_OVRD_M0, 0x000C);
+ break;
+ /* Setting VCO for 9.72GHz */
+ case 1620:
+ case 2430:
+ case 3240:
+ cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0061);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0061);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVL_M0, 0x3333);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVL_M0, 0x3333);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x0042);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x0042);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ break;
+ /* Setting VCO for 8.64GHz */
+ case 2160:
+ case 4320:
+ cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0056);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0056);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVL_M0, 0x6666);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVL_M0, 0x6666);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x003A);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x003A);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ break;
+ /* Setting VCO for 8.1GHz */
+ case 8100:
+ cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0051);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0051);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x0036);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x0036);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ break;
+ }
+}
+
/*
* Enable or disable PLL for selected lanes.
*/
@@ -1056,6 +1140,10 @@ static int cdns_torrent_dp_configure_rate(struct cdns_torrent_phy *cdns_phy,
else if (cdns_phy->ref_clk_rate == CLK_25_MHZ)
/* PMA common configuration 25MHz */
cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(cdns_phy, dp->link_rate, dp->ssc);
+ else if (cdns_phy->ref_clk_rate == CLK_100_MHZ)
+ /* PMA common configuration 100MHz */
+ cdns_torrent_dp_pma_cmn_vco_cfg_100mhz(cdns_phy, dp->link_rate, dp->ssc);
+
cdns_torrent_dp_pma_cmn_rate(cdns_phy, dp->link_rate, dp->lanes);

/* Enable the cmn_pll0_en. */
@@ -1395,6 +1483,7 @@ static int cdns_torrent_dp_init(struct phy *phy)
switch (cdns_phy->ref_clk_rate) {
case CLK_19_2_MHZ:
case CLK_25_MHZ:
+ case CLK_100_MHZ:
/* Valid Ref Clock Rate */
break;
default:
@@ -1431,6 +1520,11 @@ static int cdns_torrent_dp_init(struct phy *phy)
cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(cdns_phy,
cdns_phy->max_bit_rate,
false);
+ else if (cdns_phy->ref_clk_rate == CLK_100_MHZ)
+ cdns_torrent_dp_pma_cmn_vco_cfg_100mhz(cdns_phy,
+ cdns_phy->max_bit_rate,
+ false);
+
cdns_torrent_dp_pma_cmn_rate(cdns_phy, cdns_phy->max_bit_rate,
inst->num_lanes);

@@ -2511,6 +2605,44 @@ static struct cdns_torrent_vals sl_dp_25_no_ssc_rx_ln_vals = {
.num_regs = ARRAY_SIZE(sl_dp_25_no_ssc_rx_ln_regs),
};

+/* Single DP, 100 MHz Ref clk, no SSC */
+static struct cdns_reg_pairs sl_dp_100_no_ssc_cmn_regs[] = {
+ {0x0003, CMN_PLL0_VCOCAL_TCTRL},
+ {0x0003, CMN_PLL1_VCOCAL_TCTRL}
+};
+
+static struct cdns_reg_pairs sl_dp_100_no_ssc_tx_ln_regs[] = {
+ {0x00FB, TX_PSC_A0},
+ {0x04AA, TX_PSC_A2},
+ {0x04AA, TX_PSC_A3},
+ {0x000F, XCVR_DIAG_BIDI_CTRL}
+};
+
+static struct cdns_reg_pairs sl_dp_100_no_ssc_rx_ln_regs[] = {
+ {0x0000, RX_PSC_A0},
+ {0x0000, RX_PSC_A2},
+ {0x0000, RX_PSC_A3},
+ {0x0000, RX_PSC_CAL},
+ {0x0000, RX_REE_GCSM1_CTRL},
+ {0x0000, RX_REE_GCSM2_CTRL},
+ {0x0000, RX_REE_PERGCSM_CTRL}
+};
+
+static struct cdns_torrent_vals sl_dp_100_no_ssc_cmn_vals = {
+ .reg_pairs = sl_dp_100_no_ssc_cmn_regs,
+ .num_regs = ARRAY_SIZE(sl_dp_100_no_ssc_cmn_regs),
+};
+
+static struct cdns_torrent_vals sl_dp_100_no_ssc_tx_ln_vals = {
+ .reg_pairs = sl_dp_100_no_ssc_tx_ln_regs,
+ .num_regs = ARRAY_SIZE(sl_dp_100_no_ssc_tx_ln_regs),
+};
+
+static struct cdns_torrent_vals sl_dp_100_no_ssc_rx_ln_vals = {
+ .reg_pairs = sl_dp_100_no_ssc_rx_ln_regs,
+ .num_regs = ARRAY_SIZE(sl_dp_100_no_ssc_rx_ln_regs),
+};
+
/* USB and SGMII/QSGMII link configuration */
static struct cdns_reg_pairs usb_sgmii_link_cmn_regs[] = {
{0x0002, PHY_PLL_CFG},
@@ -3450,6 +3582,11 @@ static const struct cdns_torrent_data cdns_map_torrent = {
},
},
[CLK_100_MHZ] = {
+ [TYPE_DP] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_dp_100_no_ssc_cmn_vals,
+ },
+ },
[TYPE_PCIE] = {
[TYPE_NONE] = {
[NO_SSC] = NULL,
@@ -3542,6 +3679,11 @@ static const struct cdns_torrent_data cdns_map_torrent = {
},
},
[CLK_100_MHZ] = {
+ [TYPE_DP] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_dp_100_no_ssc_tx_ln_vals,
+ },
+ },
[TYPE_PCIE] = {
[TYPE_NONE] = {
[NO_SSC] = NULL,
@@ -3634,6 +3776,11 @@ static const struct cdns_torrent_data cdns_map_torrent = {
},
},
[CLK_100_MHZ] = {
+ [TYPE_DP] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_dp_100_no_ssc_rx_ln_vals,
+ },
+ },
[TYPE_PCIE] = {
[TYPE_NONE] = {
[NO_SSC] = &pcie_100_no_ssc_rx_ln_vals,
@@ -3917,6 +4064,11 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
},
},
[CLK_100_MHZ] = {
+ [TYPE_DP] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_dp_100_no_ssc_cmn_vals,
+ },
+ },
[TYPE_PCIE] = {
[TYPE_NONE] = {
[NO_SSC] = NULL,
@@ -4009,6 +4161,11 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
},
},
[CLK_100_MHZ] = {
+ [TYPE_DP] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_dp_100_no_ssc_tx_ln_vals,
+ },
+ },
[TYPE_PCIE] = {
[TYPE_NONE] = {
[NO_SSC] = NULL,
@@ -4101,6 +4258,11 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
},
},
[CLK_100_MHZ] = {
+ [TYPE_DP] = {
+ [TYPE_NONE] = {
+ [NO_SSC] = &sl_dp_100_no_ssc_rx_ln_vals,
+ },
+ },
[TYPE_PCIE] = {
[TYPE_NONE] = {
[NO_SSC] = &pcie_100_no_ssc_rx_ln_vals,
--
2.26.1

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