diff mbox series

[1/2] phy: cadence-torrent: Add single link USXGMII configuration for 156.25MHz refclk

Message ID 20230530143853.26571-2-sjakhade@cadence.com
State Accepted
Commit 81e4c826b35672838e2cb9ef693855998913fde4
Headers show
Series PHY: Add support for single link USXGMII in Cadence Torrent PHY driver | expand

Commit Message

Swapnil Kashinath Jakhade May 30, 2023, 2:38 p.m. UTC 
Add register sequences for single link USXGMII configuration supporting
156.25MHz reference clock frequency.

Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
---
 drivers/phy/cadence/phy-cadence-torrent.c | 233 +++++++++++++++++++++-
 1 file changed, 228 insertions(+), 5 deletions(-)

Comments

Roger Quadros May 31, 2023, 9:29 a.m. UTC | #1 
On 30/05/2023 17:38, Swapnil Jakhade wrote:
> Add register sequences for single link USXGMII configuration supporting
> 156.25MHz reference clock frequency.
> 
> Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>

Reviewed-by: Roger Quadros <rogerq@kernel.org>
diff mbox series

Patch

diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index 3b0e4daa9de9..d4be3f098040 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -27,13 +27,14 @@ 
 #define REF_CLK_19_2MHZ		19200000
 #define REF_CLK_25MHZ		25000000
 #define REF_CLK_100MHZ		100000000
+#define REF_CLK_156_25MHZ	156250000
 
 #define MAX_NUM_LANES		4
 #define DEFAULT_MAX_BIT_RATE	8100 /* in Mbps */
 
 #define NUM_SSC_MODE		3
-#define NUM_REF_CLK		3
-#define NUM_PHY_TYPE		6
+#define NUM_REF_CLK		4
+#define NUM_PHY_TYPE		7
 
 #define POLL_TIMEOUT_US		5000
 #define PLL_LOCK_TIMEOUT	100000
@@ -106,6 +107,7 @@ 
 #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_DSM_FBL_OVRD_M0	0x0096U
 #define CMN_PLL0_SS_CTRL1_M0		0x0098U
 #define CMN_PLL0_SS_CTRL2_M0            0x0099U
 #define CMN_PLL0_SS_CTRL3_M0            0x009AU
@@ -196,6 +198,10 @@ 
 #define RX_PSC_A2			0x0002U
 #define RX_PSC_A3			0x0003U
 #define RX_PSC_CAL			0x0006U
+#define RX_SDCAL0_INIT_TMR		0x0044U
+#define RX_SDCAL0_ITER_TMR		0x0045U
+#define RX_SDCAL1_INIT_TMR		0x004CU
+#define RX_SDCAL1_ITER_TMR		0x004DU
 #define RX_CDRLF_CNFG			0x0080U
 #define RX_CDRLF_CNFG3			0x0082U
 #define RX_SIGDET_HL_FILT_TMR		0x0090U
@@ -294,12 +300,14 @@  enum cdns_torrent_phy_type {
 	TYPE_SGMII,
 	TYPE_QSGMII,
 	TYPE_USB,
+	TYPE_USXGMII,
 };
 
 enum cdns_torrent_ref_clk {
 	CLK_19_2_MHZ,
 	CLK_25_MHZ,
-	CLK_100_MHZ
+	CLK_100_MHZ,
+	CLK_156_25_MHZ
 };
 
 enum cdns_torrent_ssc_mode {
@@ -403,6 +411,8 @@  struct cdns_torrent_data {
 						[NUM_SSC_MODE];
 	struct cdns_torrent_vals *pcs_cmn_vals[NUM_PHY_TYPE][NUM_PHY_TYPE]
 					      [NUM_SSC_MODE];
+	struct cdns_torrent_vals *phy_pma_cmn_vals[NUM_PHY_TYPE][NUM_PHY_TYPE]
+						  [NUM_SSC_MODE];
 	struct cdns_torrent_vals *cmn_vals[NUM_REF_CLK][NUM_PHY_TYPE]
 					  [NUM_PHY_TYPE][NUM_SSC_MODE];
 	struct cdns_torrent_vals *tx_ln_vals[NUM_REF_CLK][NUM_PHY_TYPE]
@@ -644,6 +654,8 @@  static const char *cdns_torrent_get_phy_type(enum cdns_torrent_phy_type phy_type
 		return "QSGMII";
 	case TYPE_USB:
 		return "USB";
+	case TYPE_USXGMII:
+		return "USXGMII";
 	default:
 		return "None";
 	}
@@ -2243,6 +2255,7 @@  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 *phy_pma_cmn_vals;
 	struct cdns_torrent_vals *pcs_cmn_vals;
 	struct cdns_reg_pairs *reg_pairs;
 	struct regmap *regmap;
@@ -2257,9 +2270,9 @@  static int cdns_torrent_phy_init(struct phy *phy)
 
 	/**
 	 * Spread spectrum generation is not required or supported
-	 * for SGMII/QSGMII
+	 * for SGMII/QSGMII/USXGMII
 	 */
-	if (phy_type == TYPE_SGMII || phy_type == TYPE_QSGMII)
+	if (phy_type == TYPE_SGMII || phy_type == TYPE_QSGMII || phy_type == TYPE_USXGMII)
 		ssc = NO_SSC;
 
 	/* PHY configuration specific registers for single link */
@@ -2303,6 +2316,17 @@  static int cdns_torrent_phy_init(struct phy *phy)
 				     reg_pairs[i].val);
 	}
 
+	/* PHY PMA common registers configurations */
+	phy_pma_cmn_vals = init_data->phy_pma_cmn_vals[phy_type][TYPE_NONE][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 = init_data->cmn_vals[ref_clk][phy_type][TYPE_NONE][ssc];
 	if (cmn_vals) {
@@ -2616,6 +2640,9 @@  static int cdns_torrent_clk(struct cdns_torrent_phy *cdns_phy)
 	case REF_CLK_100MHZ:
 		cdns_phy->ref_clk_rate = CLK_100_MHZ;
 		break;
+	case REF_CLK_156_25MHZ:
+		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);
@@ -2735,6 +2762,9 @@  static int cdns_torrent_phy_probe(struct platform_device *pdev)
 		case PHY_TYPE_USB3:
 			cdns_phy->phys[node].phy_type = TYPE_USB;
 			break;
+		case PHY_TYPE_USXGMII:
+			cdns_phy->phys[node].phy_type = TYPE_USXGMII;
+			break;
 		default:
 			dev_err(dev, "Unsupported protocol\n");
 			ret = -EINVAL;
@@ -2928,6 +2958,123 @@  static struct cdns_torrent_vals dp_usb_xcvr_diag_ln_vals = {
 	.num_regs = ARRAY_SIZE(dp_usb_xcvr_diag_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},
+};
+
+static struct cdns_torrent_vals ti_usxgmii_phy_pma_cmn_vals = {
+	.reg_pairs = ti_usxgmii_phy_pma_cmn_regs,
+	.num_regs = ARRAY_SIZE(ti_usxgmii_phy_pma_cmn_regs),
+};
+
+/* Single USXGMII link configuration */
+static struct cdns_reg_pairs sl_usxgmii_link_cmn_regs[] = {
+	{0x0000, PHY_PLL_CFG},
+	{0x0400, CMN_PDIAG_PLL0_CLK_SEL_M0}
+};
+
+static struct cdns_reg_pairs sl_usxgmii_xcvr_diag_ln_regs[] = {
+	{0x0000, XCVR_DIAG_HSCLK_SEL},
+	{0x0001, XCVR_DIAG_HSCLK_DIV},
+	{0x0001, XCVR_DIAG_PLLDRC_CTRL}
+};
+
+static struct cdns_torrent_vals sl_usxgmii_link_cmn_vals = {
+	.reg_pairs = sl_usxgmii_link_cmn_regs,
+	.num_regs = ARRAY_SIZE(sl_usxgmii_link_cmn_regs),
+};
+
+static struct cdns_torrent_vals sl_usxgmii_xcvr_diag_ln_vals = {
+	.reg_pairs = sl_usxgmii_xcvr_diag_ln_regs,
+	.num_regs = ARRAY_SIZE(sl_usxgmii_xcvr_diag_ln_regs),
+};
+
+/* Single link USXGMII, 156.25 MHz Ref clk, no SSC */
+static struct cdns_reg_pairs sl_usxgmii_156_25_no_ssc_cmn_regs[] = {
+	{0x0014, CMN_SSM_BIAS_TMR},
+	{0x0028, CMN_PLLSM0_PLLPRE_TMR},
+	{0x00A4, CMN_PLLSM0_PLLLOCK_TMR},
+	{0x0028, CMN_PLLSM1_PLLPRE_TMR},
+	{0x00A4, CMN_PLLSM1_PLLLOCK_TMR},
+	{0x0062, CMN_BGCAL_INIT_TMR},
+	{0x0062, CMN_BGCAL_ITER_TMR},
+	{0x0014, CMN_IBCAL_INIT_TMR},
+	{0x0018, CMN_TXPUCAL_INIT_TMR},
+	{0x0005, CMN_TXPUCAL_ITER_TMR},
+	{0x0018, CMN_TXPDCAL_INIT_TMR},
+	{0x0005, CMN_TXPDCAL_ITER_TMR},
+	{0x024A, CMN_RXCAL_INIT_TMR},
+	{0x0005, CMN_RXCAL_ITER_TMR},
+	{0x000B, CMN_SD_CAL_REFTIM_START},
+	{0x0132, CMN_SD_CAL_PLLCNT_START},
+	{0x0028, CMN_PDIAG_PLL1_CP_PADJ_M0},
+	{0x0014, CMN_PLL0_DSM_FBH_OVRD_M0},
+	{0x0014, CMN_PLL1_DSM_FBH_OVRD_M0},
+	{0x0005, CMN_PLL0_DSM_FBL_OVRD_M0},
+	{0x0005, CMN_PLL1_DSM_FBL_OVRD_M0},
+	{0x061B, CMN_PLL0_VCOCAL_INIT_TMR},
+	{0x061B, CMN_PLL1_VCOCAL_INIT_TMR},
+	{0x0019, CMN_PLL0_VCOCAL_ITER_TMR},
+	{0x0019, CMN_PLL1_VCOCAL_ITER_TMR},
+	{0x1354, CMN_PLL0_VCOCAL_REFTIM_START},
+	{0x1354, CMN_PLL1_VCOCAL_REFTIM_START},
+	{0x1354, CMN_PLL0_VCOCAL_PLLCNT_START},
+	{0x1354, CMN_PLL1_VCOCAL_PLLCNT_START},
+	{0x0003, CMN_PLL0_VCOCAL_TCTRL},
+	{0x0003, CMN_PLL1_VCOCAL_TCTRL},
+	{0x0138, CMN_PLL0_LOCK_REFCNT_START},
+	{0x0138, CMN_PLL1_LOCK_REFCNT_START},
+	{0x0138, CMN_PLL0_LOCK_PLLCNT_START},
+	{0x0138, CMN_PLL1_LOCK_PLLCNT_START}
+};
+
+static struct cdns_reg_pairs usxgmii_156_25_no_ssc_tx_ln_regs[] = {
+	{0x07A2, TX_RCVDET_ST_TMR},
+	{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 usxgmii_156_25_no_ssc_rx_ln_regs[] = {
+	{0x0014, RX_SDCAL0_INIT_TMR},
+	{0x0062, RX_SDCAL0_ITER_TMR},
+	{0x0014, RX_SDCAL1_INIT_TMR},
+	{0x0062, RX_SDCAL1_ITER_TMR},
+	{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 sl_usxgmii_156_25_no_ssc_cmn_vals = {
+	.reg_pairs = sl_usxgmii_156_25_no_ssc_cmn_regs,
+	.num_regs = ARRAY_SIZE(sl_usxgmii_156_25_no_ssc_cmn_regs),
+};
+
+static struct cdns_torrent_vals usxgmii_156_25_no_ssc_tx_ln_vals = {
+	.reg_pairs = usxgmii_156_25_no_ssc_tx_ln_regs,
+	.num_regs = ARRAY_SIZE(usxgmii_156_25_no_ssc_tx_ln_regs),
+};
+
+static struct cdns_torrent_vals usxgmii_156_25_no_ssc_rx_ln_vals = {
+	.reg_pairs = usxgmii_156_25_no_ssc_rx_ln_regs,
+	.num_regs = ARRAY_SIZE(usxgmii_156_25_no_ssc_rx_ln_regs),
+};
+
 /* PCIe and DP link configuration */
 static struct cdns_reg_pairs pcie_dp_link_cmn_regs[] = {
 	{0x0003, PHY_PLL_CFG},
@@ -4028,6 +4175,11 @@  static const struct cdns_torrent_data cdns_map_torrent = {
 				[NO_SSC] = &usb_dp_link_cmn_vals,
 			},
 		},
+		[TYPE_USXGMII] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = &sl_usxgmii_link_cmn_vals,
+			},
+		},
 	},
 	.xcvr_diag_vals = {
 		[TYPE_DP] = {
@@ -4121,6 +4273,11 @@  static const struct cdns_torrent_data cdns_map_torrent = {
 				[NO_SSC] = &usb_dp_xcvr_diag_ln_vals,
 			},
 		},
+		[TYPE_USXGMII] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = &sl_usxgmii_xcvr_diag_ln_vals,
+			},
+		},
 	},
 	.pcs_cmn_vals = {
 		[TYPE_USB] = {
@@ -4149,6 +4306,13 @@  static const struct cdns_torrent_data cdns_map_torrent = {
 			},
 		},
 	},
+	.phy_pma_cmn_vals = {
+		[TYPE_USXGMII] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = NULL,
+			},
+		},
+	},
 	.cmn_vals = {
 		[CLK_19_2_MHZ] = {
 			[TYPE_DP] = {
@@ -4257,6 +4421,13 @@  static const struct cdns_torrent_data cdns_map_torrent = {
 				},
 			},
 		},
+		[CLK_156_25_MHZ] = {
+			[TYPE_USXGMII] = {
+				[TYPE_NONE] = {
+					[NO_SSC] = &sl_usxgmii_156_25_no_ssc_cmn_vals,
+				},
+			},
+		},
 	},
 	.tx_ln_vals = {
 		[CLK_19_2_MHZ] = {
@@ -4366,6 +4537,13 @@  static const struct cdns_torrent_data cdns_map_torrent = {
 				},
 			},
 		},
+		[CLK_156_25_MHZ] = {
+			[TYPE_USXGMII] = {
+				[TYPE_NONE] = {
+					[NO_SSC] = &usxgmii_156_25_no_ssc_tx_ln_vals,
+				},
+			},
+		},
 	},
 	.rx_ln_vals = {
 		[CLK_19_2_MHZ] = {
@@ -4475,6 +4653,13 @@  static const struct cdns_torrent_data cdns_map_torrent = {
 				},
 			},
 		},
+		[CLK_156_25_MHZ] = {
+			[TYPE_USXGMII] = {
+				[TYPE_NONE] = {
+					[NO_SSC] = &usxgmii_156_25_no_ssc_rx_ln_vals,
+				},
+			},
+		},
 	},
 };
 
@@ -4573,6 +4758,11 @@  static const struct cdns_torrent_data ti_j721e_map_torrent = {
 				[NO_SSC] = &usb_dp_link_cmn_vals,
 			},
 		},
+		[TYPE_USXGMII] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = &sl_usxgmii_link_cmn_vals,
+			},
+		},
 	},
 	.xcvr_diag_vals = {
 		[TYPE_DP] = {
@@ -4666,6 +4856,11 @@  static const struct cdns_torrent_data ti_j721e_map_torrent = {
 				[NO_SSC] = &usb_dp_xcvr_diag_ln_vals,
 			},
 		},
+		[TYPE_USXGMII] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = &sl_usxgmii_xcvr_diag_ln_vals,
+			},
+		},
 	},
 	.pcs_cmn_vals = {
 		[TYPE_USB] = {
@@ -4694,6 +4889,13 @@  static const struct cdns_torrent_data ti_j721e_map_torrent = {
 			},
 		},
 	},
+	.phy_pma_cmn_vals = {
+		[TYPE_USXGMII] = {
+			[TYPE_NONE] = {
+				[NO_SSC] = &ti_usxgmii_phy_pma_cmn_vals,
+			},
+		},
+	},
 	.cmn_vals = {
 		[CLK_19_2_MHZ] = {
 			[TYPE_DP] = {
@@ -4802,6 +5004,13 @@  static const struct cdns_torrent_data ti_j721e_map_torrent = {
 				},
 			},
 		},
+		[CLK_156_25_MHZ] = {
+			[TYPE_USXGMII] = {
+				[TYPE_NONE] = {
+					[NO_SSC] = &sl_usxgmii_156_25_no_ssc_cmn_vals,
+				},
+			},
+		},
 	},
 	.tx_ln_vals = {
 		[CLK_19_2_MHZ] = {
@@ -4911,6 +5120,13 @@  static const struct cdns_torrent_data ti_j721e_map_torrent = {
 				},
 			},
 		},
+		[CLK_156_25_MHZ] = {
+			[TYPE_USXGMII] = {
+				[TYPE_NONE] = {
+					[NO_SSC] = &usxgmii_156_25_no_ssc_tx_ln_vals,
+				},
+			},
+		},
 	},
 	.rx_ln_vals = {
 		[CLK_19_2_MHZ] = {
@@ -5020,6 +5236,13 @@  static const struct cdns_torrent_data ti_j721e_map_torrent = {
 				},
 			},
 		},
+		[CLK_156_25_MHZ] = {
+			[TYPE_USXGMII] = {
+				[TYPE_NONE] = {
+					[NO_SSC] = &usxgmii_156_25_no_ssc_rx_ln_vals,
+				},
+			},
+		},
 	},
 };