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Commit ede775a8 authored by Swapnil Jakhade's avatar Swapnil Jakhade Committed by Vinod Koul
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phy: cadence-torrent: Add PCIe + DP multilink configuration for 100MHz refclk 

Add multilink DP configuration support for 100MHz reference clock rate.
This is the only clock rate supported currently for multilink PHY
configurations. Also, add PCIe + DP multiprotocol multilink register
configuration sequences for 100MHz refclk with no SSC.
Signed-off-by: default avatarSwapnil Jakhade <sjakhade@cadence.com>
Link: https://lore.kernel.org/r/20230418173157.25607-4-sjakhade@cadence.comSigned-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent c756cc16
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Showing with 227 additions and 57 deletions
drivers/phy/cadence/phy-cadence-torrent.c
View file @ ede775a8
......@@ -904,74 +904,90 @@ void cdns_torrent_dp_pma_cmn_vco_cfg_100mhz(struct cdns_torrent_phy *cdns_phy,
/* Setting VCO for 10.8GHz */
case 2700:
case 5400:
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0028);
if (cdns_phy->dp_pll & DP_PLL0)
cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_FBH_OVRD_M0, 0x0022);
if (cdns_phy->dp_pll & DP_PLL1) {
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0028);
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:
if (cdns_phy->dp_pll & DP_PLL0) {
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);
}
if (cdns_phy->dp_pll & DP_PLL1) {
cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0061);
cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVL_M0, 0x3333);
cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x0042);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
}
break;
/* Setting VCO for 8.64GHz */
case 2160:
case 4320:
if (cdns_phy->dp_pll & DP_PLL0) {
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);
}
if (cdns_phy->dp_pll & DP_PLL1) {
cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0056);
cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVL_M0, 0x6666);
cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x003A);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
}
break;
/* Setting VCO for 8.1GHz */
case 8100:
if (cdns_phy->dp_pll & DP_PLL0) {
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);
}
if (cdns_phy->dp_pll & DP_PLL1) {
cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0051);
cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x0036);
cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
}
break;
}
}
......@@ -1708,6 +1724,20 @@ static int cdns_torrent_dp_init(struct phy *phy)
return cdns_torrent_dp_start(cdns_phy, inst, phy);
}
static int cdns_torrent_dp_multilink_init(struct cdns_torrent_phy *cdns_phy,
struct cdns_torrent_inst *inst,
struct phy *phy)
{
if (cdns_phy->ref_clk_rate != CLK_100_MHZ) {
dev_err(cdns_phy->dev, "Unsupported Ref Clock Rate\n");
return -EINVAL;
}
cdns_torrent_dp_common_init(cdns_phy, inst);
return cdns_torrent_dp_start(cdns_phy, inst, phy);
}
static int cdns_torrent_derived_refclk_enable(struct clk_hw *hw)
{
struct cdns_torrent_derived_refclk *derived_refclk = to_cdns_torrent_derived_refclk(hw);
......@@ -2219,8 +2249,11 @@ static int cdns_torrent_phy_init(struct phy *phy)
u32 num_regs;
int i, j;
if (cdns_phy->nsubnodes > 1)
if (cdns_phy->nsubnodes > 1) {
if (phy_type == TYPE_DP)
return cdns_torrent_dp_multilink_init(cdns_phy, inst, phy);
return 0;
}
/**
* Spread spectrum generation is not required or supported
......@@ -2462,6 +2495,12 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy)
}
}
if (phy_t1 == TYPE_DP) {
ret = cdns_torrent_dp_get_pll(cdns_phy, phy_t2);
if (ret)
return ret;
}
reset_control_deassert(cdns_phy->phys[node].lnk_rst);
}
......@@ -2857,6 +2896,77 @@ static void cdns_torrent_phy_remove(struct platform_device *pdev)
cdns_torrent_clk_cleanup(cdns_phy);
}
/* PCIe and DP link configuration */
static struct cdns_reg_pairs pcie_dp_link_cmn_regs[] = {
{0x0003, PHY_PLL_CFG},
{0x0601, CMN_PDIAG_PLL0_CLK_SEL_M0},
{0x0400, CMN_PDIAG_PLL0_CLK_SEL_M1}
};
static struct cdns_reg_pairs pcie_dp_xcvr_diag_ln_regs[] = {
{0x0000, XCVR_DIAG_HSCLK_SEL},
{0x0001, XCVR_DIAG_HSCLK_DIV},
{0x0012, XCVR_DIAG_PLLDRC_CTRL}
};
static struct cdns_reg_pairs dp_pcie_xcvr_diag_ln_regs[] = {
{0x0001, XCVR_DIAG_HSCLK_SEL},
{0x0009, XCVR_DIAG_PLLDRC_CTRL}
};
static struct cdns_torrent_vals pcie_dp_link_cmn_vals = {
.reg_pairs = pcie_dp_link_cmn_regs,
.num_regs = ARRAY_SIZE(pcie_dp_link_cmn_regs),
};
static struct cdns_torrent_vals pcie_dp_xcvr_diag_ln_vals = {
.reg_pairs = pcie_dp_xcvr_diag_ln_regs,
.num_regs = ARRAY_SIZE(pcie_dp_xcvr_diag_ln_regs),
};
static struct cdns_torrent_vals dp_pcie_xcvr_diag_ln_vals = {
.reg_pairs = dp_pcie_xcvr_diag_ln_regs,
.num_regs = ARRAY_SIZE(dp_pcie_xcvr_diag_ln_regs),
};
/* DP Multilink, 100 MHz Ref clk, no SSC */
static struct cdns_reg_pairs dp_100_no_ssc_cmn_regs[] = {
{0x007F, CMN_TXPUCAL_TUNE},
{0x007F, CMN_TXPDCAL_TUNE}
};
static struct cdns_reg_pairs 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 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 dp_100_no_ssc_cmn_vals = {
.reg_pairs = dp_100_no_ssc_cmn_regs,
.num_regs = ARRAY_SIZE(dp_100_no_ssc_cmn_regs),
};
static struct cdns_torrent_vals dp_100_no_ssc_tx_ln_vals = {
.reg_pairs = dp_100_no_ssc_tx_ln_regs,
.num_regs = ARRAY_SIZE(dp_100_no_ssc_tx_ln_regs),
};
static struct cdns_torrent_vals dp_100_no_ssc_rx_ln_vals = {
.reg_pairs = dp_100_no_ssc_rx_ln_regs,
.num_regs = ARRAY_SIZE(dp_100_no_ssc_rx_ln_regs),
};
/* Single DisplayPort(DP) link configuration */
static struct cdns_reg_pairs sl_dp_link_cmn_regs[] = {
{0x0000, PHY_PLL_CFG},
......@@ -3799,6 +3909,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_link_cmn_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &pcie_dp_link_cmn_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -3821,6 +3934,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[EXTERNAL_SSC] = &pcie_usb_link_cmn_vals,
[INTERNAL_SSC] = &pcie_usb_link_cmn_vals,
},
[TYPE_DP] = {
[NO_SSC] = &pcie_dp_link_cmn_vals,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -3880,6 +3996,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_xcvr_diag_ln_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &dp_pcie_xcvr_diag_ln_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -3902,6 +4021,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[EXTERNAL_SSC] = &pcie_usb_xcvr_diag_ln_vals,
[INTERNAL_SSC] = &pcie_usb_xcvr_diag_ln_vals,
},
[TYPE_DP] = {
[NO_SSC] = &pcie_dp_xcvr_diag_ln_vals,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -4000,6 +4122,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_100_no_ssc_cmn_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &dp_100_no_ssc_cmn_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -4022,6 +4147,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[EXTERNAL_SSC] = &pcie_100_no_ssc_cmn_vals,
[INTERNAL_SSC] = &pcie_100_int_ssc_cmn_vals,
},
[TYPE_DP] = {
[NO_SSC] = NULL,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -4097,6 +4225,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_100_no_ssc_tx_ln_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &dp_100_no_ssc_tx_ln_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -4119,6 +4250,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[EXTERNAL_SSC] = NULL,
[INTERNAL_SSC] = NULL,
},
[TYPE_DP] = {
[NO_SSC] = NULL,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -4194,6 +4328,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_100_no_ssc_rx_ln_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &dp_100_no_ssc_rx_ln_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -4216,6 +4353,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
[EXTERNAL_SSC] = &pcie_100_no_ssc_rx_ln_vals,
[INTERNAL_SSC] = &pcie_100_no_ssc_rx_ln_vals,
},
[TYPE_DP] = {
[NO_SSC] = &pcie_100_no_ssc_rx_ln_vals,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -4281,6 +4421,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_link_cmn_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &pcie_dp_link_cmn_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -4303,6 +4446,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[EXTERNAL_SSC] = &pcie_usb_link_cmn_vals,
[INTERNAL_SSC] = &pcie_usb_link_cmn_vals,
},
[TYPE_DP] = {
[NO_SSC] = &pcie_dp_link_cmn_vals,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -4362,6 +4508,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_xcvr_diag_ln_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &dp_pcie_xcvr_diag_ln_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -4384,6 +4533,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[EXTERNAL_SSC] = &pcie_usb_xcvr_diag_ln_vals,
[INTERNAL_SSC] = &pcie_usb_xcvr_diag_ln_vals,
},
[TYPE_DP] = {
[NO_SSC] = &pcie_dp_xcvr_diag_ln_vals,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -4482,6 +4634,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_100_no_ssc_cmn_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &dp_100_no_ssc_cmn_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -4504,6 +4659,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[EXTERNAL_SSC] = &pcie_100_no_ssc_cmn_vals,
[INTERNAL_SSC] = &pcie_100_int_ssc_cmn_vals,
},
[TYPE_DP] = {
[NO_SSC] = NULL,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -4579,6 +4737,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_100_no_ssc_tx_ln_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &dp_100_no_ssc_tx_ln_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -4601,6 +4762,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[EXTERNAL_SSC] = NULL,
[INTERNAL_SSC] = NULL,
},
[TYPE_DP] = {
[NO_SSC] = NULL,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......@@ -4676,6 +4840,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[TYPE_NONE] = {
[NO_SSC] = &sl_dp_100_no_ssc_rx_ln_vals,
},
[TYPE_PCIE] = {
[NO_SSC] = &dp_100_no_ssc_rx_ln_vals,
},
},
[TYPE_PCIE] = {
[TYPE_NONE] = {
......@@ -4698,6 +4865,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
[EXTERNAL_SSC] = &pcie_100_no_ssc_rx_ln_vals,
[INTERNAL_SSC] = &pcie_100_no_ssc_rx_ln_vals,
},
[TYPE_DP] = {
[NO_SSC] = &pcie_100_no_ssc_rx_ln_vals,
},
},
[TYPE_SGMII] = {
[TYPE_NONE] = {
......
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