/* * Copyright (C) 2018-2021 Marvell International Ltd. * * SPDX-License-Identifier: BSD-3-Clause * https://spdx.org/licenses */ #include #include #include #include #include #include #include #include #include "phy-comphy-3700.h" #include "phy-comphy-common.h" /* * COMPHY_INDIRECT_REG points to ahci address space but the ahci region used in * Linux is up to 0x178 so none will access it from Linux in runtime * concurrently. */ #define COMPHY_INDIRECT_REG (MVEBU_REGS_BASE + 0xE0178) /* The USB3_GBE1_PHY range is above USB3 registers used in dts */ #define USB3_GBE1_PHY (MVEBU_REGS_BASE + 0x5C000) #define COMPHY_SD_ADDR (MVEBU_REGS_BASE + 0x1F000) struct sgmii_phy_init_data_fix { uint16_t addr; uint16_t value; }; /* Changes to 40M1G25 mode data required for running 40M3G125 init mode */ static struct sgmii_phy_init_data_fix sgmii_phy_init_fix[] = { {0x005, 0x07CC}, {0x015, 0x0000}, {0x01B, 0x0000}, {0x01D, 0x0000}, {0x01E, 0x0000}, {0x01F, 0x0000}, {0x020, 0x0000}, {0x021, 0x0030}, {0x026, 0x0888}, {0x04D, 0x0152}, {0x04F, 0xA020}, {0x050, 0x07CC}, {0x053, 0xE9CA}, {0x055, 0xBD97}, {0x071, 0x3015}, {0x076, 0x03AA}, {0x07C, 0x0FDF}, {0x0C2, 0x3030}, {0x0C3, 0x8000}, {0x0E2, 0x5550}, {0x0E3, 0x12A4}, {0x0E4, 0x7D00}, {0x0E6, 0x0C83}, {0x101, 0xFCC0}, {0x104, 0x0C10} }; /* 40M1G25 mode init data */ static uint16_t sgmii_phy_init[512] = { /* 0 1 2 3 4 5 6 7 */ /*-----------------------------------------------------------*/ /* 8 9 A B C D E F */ 0x3110, 0xFD83, 0x6430, 0x412F, 0x82C0, 0x06FA, 0x4500, 0x6D26, /* 00 */ 0xAFC0, 0x8000, 0xC000, 0x0000, 0x2000, 0x49CC, 0x0BC9, 0x2A52, /* 08 */ 0x0BD2, 0x0CDE, 0x13D2, 0x0CE8, 0x1149, 0x10E0, 0x0000, 0x0000, /* 10 */ 0x0000, 0x0000, 0x0000, 0x0001, 0x0000, 0x4134, 0x0D2D, 0xFFFF, /* 18 */ 0xFFE0, 0x4030, 0x1016, 0x0030, 0x0000, 0x0800, 0x0866, 0x0000, /* 20 */ 0x0000, 0x0000, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, /* 28 */ 0xFFFF, 0xFFFF, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /* 30 */ 0x0000, 0x0000, 0x000F, 0x6A62, 0x1988, 0x3100, 0x3100, 0x3100, /* 38 */ 0x3100, 0xA708, 0x2430, 0x0830, 0x1030, 0x4610, 0xFF00, 0xFF00, /* 40 */ 0x0060, 0x1000, 0x0400, 0x0040, 0x00F0, 0x0155, 0x1100, 0xA02A, /* 48 */ 0x06FA, 0x0080, 0xB008, 0xE3ED, 0x5002, 0xB592, 0x7A80, 0x0001, /* 50 */ 0x020A, 0x8820, 0x6014, 0x8054, 0xACAA, 0xFC88, 0x2A02, 0x45CF, /* 58 */ 0x000F, 0x1817, 0x2860, 0x064F, 0x0000, 0x0204, 0x1800, 0x6000, /* 60 */ 0x810F, 0x4F23, 0x4000, 0x4498, 0x0850, 0x0000, 0x000E, 0x1002, /* 68 */ 0x9D3A, 0x3009, 0xD066, 0x0491, 0x0001, 0x6AB0, 0x0399, 0x3780, /* 70 */ 0x0040, 0x5AC0, 0x4A80, 0x0000, 0x01DF, 0x0000, 0x0007, 0x0000, /* 78 */ 0x2D54, 0x00A1, 0x4000, 0x0100, 0xA20A, 0x0000, 0x0000, 0x0000, /* 80 */ 0x0000, 0x0000, 0x0000, 0x7400, 0x0E81, 0x1000, 0x1242, 0x0210, /* 88 */ 0x80DF, 0x0F1F, 0x2F3F, 0x4F5F, 0x6F7F, 0x0F1F, 0x2F3F, 0x4F5F, /* 90 */ 0x6F7F, 0x4BAD, 0x0000, 0x0000, 0x0800, 0x0000, 0x2400, 0xB651, /* 98 */ 0xC9E0, 0x4247, 0x0A24, 0x0000, 0xAF19, 0x1004, 0x0000, 0x0000, /* A0 */ 0x0000, 0x0013, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /* A8 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /* B0 */ 0x0000, 0x0000, 0x0000, 0x0060, 0x0000, 0x0000, 0x0000, 0x0000, /* B8 */ 0x0000, 0x0000, 0x3010, 0xFA00, 0x0000, 0x0000, 0x0000, 0x0003, /* C0 */ 0x1618, 0x8200, 0x8000, 0x0400, 0x050F, 0x0000, 0x0000, 0x0000, /* C8 */ 0x4C93, 0x0000, 0x1000, 0x1120, 0x0010, 0x1242, 0x1242, 0x1E00, /* D0 */ 0x0000, 0x0000, 0x0000, 0x00F8, 0x0000, 0x0041, 0x0800, 0x0000, /* D8 */ 0x82A0, 0x572E, 0x2490, 0x14A9, 0x4E00, 0x0000, 0x0803, 0x0541, /* E0 */ 0x0C15, 0x0000, 0x0000, 0x0400, 0x2626, 0x0000, 0x0000, 0x4200, /* E8 */ 0x0000, 0xAA55, 0x1020, 0x0000, 0x0000, 0x5010, 0x0000, 0x0000, /* F0 */ 0x0000, 0x0000, 0x5000, 0x0000, 0x0000, 0x0000, 0x02F2, 0x0000, /* F8 */ 0x101F, 0xFDC0, 0x4000, 0x8010, 0x0110, 0x0006, 0x0000, 0x0000, /*100 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*108 */ 0x04CF, 0x0000, 0x04CF, 0x0000, 0x04CF, 0x0000, 0x04C6, 0x0000, /*110 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*118 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*120 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*128 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*130 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*138 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*140 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*148 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*150 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*158 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*160 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*168 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*170 */ 0x0000, 0x0000, 0x0000, 0x00F0, 0x08A2, 0x3112, 0x0A14, 0x0000, /*178 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*180 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*188 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*190 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*198 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1A0 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1A8 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1B0 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1B8 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1C0 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1C8 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1D0 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1D8 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1E0 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1E8 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*1F0 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 /*1F8 */ }; /* PHY selector configures with corresponding modes */ static int mvebu_a3700_comphy_set_phy_selector(uint8_t comphy_index, uint32_t comphy_mode) { uint32_t reg; int mode = COMPHY_GET_MODE(comphy_mode); reg = mmio_read_32(MVEBU_COMPHY_REG_BASE + COMPHY_SELECTOR_PHY_REG); switch (mode) { case (COMPHY_SATA_MODE): /* SATA must be in Lane2 */ if (comphy_index == COMPHY_LANE2) reg &= ~COMPHY_SELECTOR_USB3_PHY_SEL_BIT; else goto error; break; case (COMPHY_SGMII_MODE): case (COMPHY_2500BASEX_MODE): if (comphy_index == COMPHY_LANE0) reg &= ~COMPHY_SELECTOR_USB3_GBE1_SEL_BIT; else if (comphy_index == COMPHY_LANE1) reg &= ~COMPHY_SELECTOR_PCIE_GBE0_SEL_BIT; else goto error; break; case (COMPHY_USB3H_MODE): case (COMPHY_USB3D_MODE): case (COMPHY_USB3_MODE): if (comphy_index == COMPHY_LANE2) reg |= COMPHY_SELECTOR_USB3_PHY_SEL_BIT; else if (comphy_index == COMPHY_LANE0) reg |= COMPHY_SELECTOR_USB3_GBE1_SEL_BIT; else goto error; break; case (COMPHY_PCIE_MODE): /* PCIE must be in Lane1 */ if (comphy_index == COMPHY_LANE1) reg |= COMPHY_SELECTOR_PCIE_GBE0_SEL_BIT; else goto error; break; default: goto error; } mmio_write_32(MVEBU_COMPHY_REG_BASE + COMPHY_SELECTOR_PHY_REG, reg); return 0; error: ERROR("COMPHY[%d] mode[%d] is invalid\n", comphy_index, mode); return -EINVAL; } /* * This is something like the inverse of the previous function: for given * lane it returns COMPHY_*_MODE. * * It is useful when powering the phy off. * * This function returns COMPHY_USB3_MODE even if the phy was configured * with COMPHY_USB3D_MODE or COMPHY_USB3H_MODE. (The usb3 phy initialization * code does not differentiate between these modes.) * Also it returns COMPHY_SGMII_MODE even if the phy was configures with * COMPHY_2500BASEX_MODE. (The sgmii phy initialization code does differentiate * between these modes, but it is irrelevant when powering the phy off.) */ static int mvebu_a3700_comphy_get_mode(uint8_t comphy_index) { uint32_t reg; reg = mmio_read_32(MVEBU_COMPHY_REG_BASE + COMPHY_SELECTOR_PHY_REG); switch (comphy_index) { case COMPHY_LANE0: if ((reg & COMPHY_SELECTOR_USB3_GBE1_SEL_BIT) != 0) return COMPHY_USB3_MODE; else return COMPHY_SGMII_MODE; case COMPHY_LANE1: if ((reg & COMPHY_SELECTOR_PCIE_GBE0_SEL_BIT) != 0) return COMPHY_PCIE_MODE; else return COMPHY_SGMII_MODE; case COMPHY_LANE2: if ((reg & COMPHY_SELECTOR_USB3_PHY_SEL_BIT) != 0) return COMPHY_USB3_MODE; else return COMPHY_SATA_MODE; } return COMPHY_UNUSED; } /* It is only used for SATA and USB3 on comphy lane2. */ static void comphy_set_indirect(uintptr_t addr, uint32_t offset, uint16_t data, uint16_t mask, bool is_sata) { /* * When Lane 2 PHY is for USB3, access the PHY registers * through indirect Address and Data registers: * INDIR_ACC_PHY_ADDR (RD00E0178h [31:0]), * INDIR_ACC_PHY_DATA (RD00E017Ch [31:0]), * within the SATA Host Controller registers, Lane 2 base register * offset is 0x200 */ if (is_sata) { mmio_write_32(addr + COMPHY_LANE2_INDIR_ADDR_OFFSET, offset); } else { mmio_write_32(addr + COMPHY_LANE2_INDIR_ADDR_OFFSET, offset + USB3PHY_LANE2_REG_BASE_OFFSET); } reg_set(addr + COMPHY_LANE2_INDIR_DATA_OFFSET, data, mask); } /* It is only used for SATA on comphy lane2. */ static void comphy_sata_set_indirect(uintptr_t addr, uint32_t reg_offset, uint16_t data, uint16_t mask) { comphy_set_indirect(addr, reg_offset, data, mask, true); } /* It is only used for USB3 indirect access on comphy lane2. */ static void comphy_usb3_set_indirect(uintptr_t addr, uint32_t reg_offset, uint16_t data, uint16_t mask) { comphy_set_indirect(addr, reg_offset, data, mask, false); } /* It is only used for USB3 direct access not on comphy lane2. */ static void comphy_usb3_set_direct(uintptr_t addr, uint32_t reg_offset, uint16_t data, uint16_t mask) { reg_set16((reg_offset * PHY_SHFT(USB3) + addr), data, mask); } static void comphy_sgmii_phy_init(uintptr_t sd_ip_addr, bool is_1gbps) { const int fix_arr_sz = ARRAY_SIZE(sgmii_phy_init_fix); int addr, fix_idx; uint16_t val; fix_idx = 0; for (addr = 0; addr < 512; addr++) { /* * All PHY register values are defined in full for 3.125Gbps * SERDES speed. The values required for 1.25 Gbps are almost * the same and only few registers should be "fixed" in * comparison to 3.125 Gbps values. These register values are * stored in "sgmii_phy_init_fix" array. */ if (!is_1gbps && sgmii_phy_init_fix[fix_idx].addr == addr) { /* Use new value */ val = sgmii_phy_init_fix[fix_idx].value; if (fix_idx < fix_arr_sz) fix_idx++; } else { val = sgmii_phy_init[addr]; } reg_set16(SGMIIPHY_ADDR(addr, sd_ip_addr), val, 0xFFFF); } } static int mvebu_a3700_comphy_sata_power_on(uint8_t comphy_index, uint32_t comphy_mode) { int ret; uint32_t offset, data = 0, ref_clk; uintptr_t comphy_indir_regs = COMPHY_INDIRECT_REG; int invert = COMPHY_GET_POLARITY_INVERT(comphy_mode); debug_enter(); /* Configure phy selector for SATA */ ret = mvebu_a3700_comphy_set_phy_selector(comphy_index, comphy_mode); if (ret) { return ret; } /* Clear phy isolation mode to make it work in normal mode */ offset = COMPHY_ISOLATION_CTRL + SATAPHY_LANE2_REG_BASE_OFFSET; comphy_sata_set_indirect(comphy_indir_regs, offset, 0, PHY_ISOLATE_MODE); /* 0. Check the Polarity invert bits */ if (invert & COMPHY_POLARITY_TXD_INVERT) data |= TXD_INVERT_BIT; if (invert & COMPHY_POLARITY_RXD_INVERT) data |= RXD_INVERT_BIT; offset = COMPHY_SYNC_PATTERN + SATAPHY_LANE2_REG_BASE_OFFSET; comphy_sata_set_indirect(comphy_indir_regs, offset, data, TXD_INVERT_BIT | RXD_INVERT_BIT); /* 1. Select 40-bit data width width */ offset = COMPHY_DIG_LOOPBACK_EN + SATAPHY_LANE2_REG_BASE_OFFSET; comphy_sata_set_indirect(comphy_indir_regs, offset, DATA_WIDTH_40BIT, SEL_DATA_WIDTH_MASK); /* 2. Select reference clock(25M) and PHY mode (SATA) */ offset = COMPHY_POWER_PLL_CTRL + SATAPHY_LANE2_REG_BASE_OFFSET; if (get_ref_clk() == 40) ref_clk = REF_FREF_SEL_SERDES_40MHZ; else ref_clk = REF_FREF_SEL_SERDES_25MHZ; comphy_sata_set_indirect(comphy_indir_regs, offset, ref_clk | PHY_MODE_SATA, REF_FREF_SEL_MASK | PHY_MODE_MASK); /* 3. Use maximum PLL rate (no power save) */ offset = COMPHY_KVCO_CAL_CTRL + SATAPHY_LANE2_REG_BASE_OFFSET; comphy_sata_set_indirect(comphy_indir_regs, offset, USE_MAX_PLL_RATE_BIT, USE_MAX_PLL_RATE_BIT); /* 4. Reset reserved bit */ comphy_sata_set_indirect(comphy_indir_regs, COMPHY_RESERVED_REG, 0, PHYCTRL_FRM_PIN_BIT); /* 5. Set vendor-specific configuration (It is done in sata driver) */ /* XXX: in U-Boot below sequence was executed in this place, in Linux * not. Now it is done only in U-Boot before this comphy * initialization - tests shows that it works ok, but in case of any * future problem it is left for reference. * reg_set(MVEBU_REGS_BASE + 0xe00a0, 0, 0xffffffff); * reg_set(MVEBU_REGS_BASE + 0xe00a4, BIT(6), BIT(6)); */ /* Wait for > 55 us to allow PLL be enabled */ udelay(PLL_SET_DELAY_US); /* Polling status */ mmio_write_32(comphy_indir_regs + COMPHY_LANE2_INDIR_ADDR_OFFSET, COMPHY_DIG_LOOPBACK_EN + SATAPHY_LANE2_REG_BASE_OFFSET); ret = polling_with_timeout(comphy_indir_regs + COMPHY_LANE2_INDIR_DATA_OFFSET, PLL_READY_TX_BIT, PLL_READY_TX_BIT, COMPHY_PLL_TIMEOUT, REG_32BIT); if (ret) { return -ETIMEDOUT; } debug_exit(); return 0; } static int mvebu_a3700_comphy_sgmii_power_on(uint8_t comphy_index, uint32_t comphy_mode) { int ret; uint32_t mask, data; uintptr_t offset; uintptr_t sd_ip_addr; int mode = COMPHY_GET_MODE(comphy_mode); int invert = COMPHY_GET_POLARITY_INVERT(comphy_mode); debug_enter(); /* Set selector */ ret = mvebu_a3700_comphy_set_phy_selector(comphy_index, comphy_mode); if (ret) { return ret; } /* Serdes IP Base address * COMPHY Lane0 -- USB3/GBE1 * COMPHY Lane1 -- PCIe/GBE0 */ if (comphy_index == COMPHY_LANE0) { /* Get usb3 and gbe */ sd_ip_addr = USB3_GBE1_PHY; } else sd_ip_addr = COMPHY_SD_ADDR; /* * 1. Reset PHY by setting PHY input port PIN_RESET=1. * 2. Set PHY input port PIN_TX_IDLE=1, PIN_PU_IVREF=1 to keep * PHY TXP/TXN output to idle state during PHY initialization * 3. Set PHY input port PIN_PU_PLL=0, PIN_PU_RX=0, PIN_PU_TX=0. */ data = PIN_PU_IVREF_BIT | PIN_TX_IDLE_BIT | PIN_RESET_COMPHY_BIT; mask = data | PIN_RESET_CORE_BIT | PIN_PU_PLL_BIT | PIN_PU_RX_BIT | PIN_PU_TX_BIT; offset = MVEBU_COMPHY_REG_BASE + COMPHY_PHY_CFG1_OFFSET(comphy_index); reg_set(offset, data, mask); /* 4. Release reset to the PHY by setting PIN_RESET=0. */ data = 0; mask = PIN_RESET_COMPHY_BIT; reg_set(offset, data, mask); /* * 5. Set PIN_PHY_GEN_TX[3:0] and PIN_PHY_GEN_RX[3:0] to decide COMPHY * bit rate */ if (mode == COMPHY_SGMII_MODE) { /* SGMII 1G, SerDes speed 1.25G */ data |= SD_SPEED_1_25_G << GEN_RX_SEL_OFFSET; data |= SD_SPEED_1_25_G << GEN_TX_SEL_OFFSET; } else if (mode == COMPHY_2500BASEX_MODE) { /* 2500Base-X, SerDes speed 3.125G */ data |= SD_SPEED_3_125_G << GEN_RX_SEL_OFFSET; data |= SD_SPEED_3_125_G << GEN_TX_SEL_OFFSET; } else { /* Other rates are not supported */ ERROR("unsupported SGMII speed on comphy lane%d\n", comphy_index); return -EINVAL; } mask = GEN_RX_SEL_MASK | GEN_TX_SEL_MASK; reg_set(offset, data, mask); /* * 6. Wait 10mS for bandgap and reference clocks to stabilize; then * start SW programming. */ mdelay(10); /* 7. Program COMPHY register PHY_MODE */ data = PHY_MODE_SGMII; mask = PHY_MODE_MASK; reg_set16(SGMIIPHY_ADDR(COMPHY_POWER_PLL_CTRL, sd_ip_addr), data, mask); /* * 8. Set COMPHY register REFCLK_SEL to select the correct REFCLK * source */ data = 0; mask = PHY_REF_CLK_SEL; reg_set16(SGMIIPHY_ADDR(COMPHY_MISC_CTRL0, sd_ip_addr), data, mask); /* * 9. Set correct reference clock frequency in COMPHY register * REF_FREF_SEL. */ if (get_ref_clk() == 40) data = REF_FREF_SEL_SERDES_50MHZ; else data = REF_FREF_SEL_SERDES_25MHZ; mask = REF_FREF_SEL_MASK; reg_set16(SGMIIPHY_ADDR(COMPHY_POWER_PLL_CTRL, sd_ip_addr), data, mask); /* 10. Program COMPHY register PHY_GEN_MAX[1:0] * This step is mentioned in the flow received from verification team. * However the PHY_GEN_MAX value is only meaningful for other interfaces * (not SGMII). For instance, it selects SATA speed 1.5/3/6 Gbps or PCIe * speed 2.5/5 Gbps */ /* * 11. Program COMPHY register SEL_BITS to set correct parallel data * bus width */ data = DATA_WIDTH_10BIT; mask = SEL_DATA_WIDTH_MASK; reg_set16(SGMIIPHY_ADDR(COMPHY_DIG_LOOPBACK_EN, sd_ip_addr), data, mask); /* * 12. As long as DFE function needs to be enabled in any mode, * COMPHY register DFE_UPDATE_EN[5:0] shall be programmed to 0x3F * for real chip during COMPHY power on. * The step 14 exists (and empty) in the original initialization flow * obtained from the verification team. According to the functional * specification DFE_UPDATE_EN already has the default value 0x3F */ /* * 13. Program COMPHY GEN registers. * These registers should be programmed based on the lab testing result * to achieve optimal performance. Please contact the CEA group to get * the related GEN table during real chip bring-up. We only required to * run though the entire registers programming flow defined by * "comphy_sgmii_phy_init" when the REF clock is 40 MHz. For REF clock * 25 MHz the default values stored in PHY registers are OK. */ debug("Running C-DPI phy init %s mode\n", mode == COMPHY_2500BASEX_MODE ? "2G5" : "1G"); if (get_ref_clk() == 40) comphy_sgmii_phy_init(sd_ip_addr, mode != COMPHY_2500BASEX_MODE); /* * 14. [Simulation Only] should not be used for real chip. * By pass power up calibration by programming EXT_FORCE_CAL_DONE * (R02h[9]) to 1 to shorten COMPHY simulation time. */ /* * 15. [Simulation Only: should not be used for real chip] * Program COMPHY register FAST_DFE_TIMER_EN=1 to shorten RX training * simulation time. */ /* * 16. Check the PHY Polarity invert bit */ data = 0x0; if (invert & COMPHY_POLARITY_TXD_INVERT) data |= TXD_INVERT_BIT; if (invert & COMPHY_POLARITY_RXD_INVERT) data |= RXD_INVERT_BIT; mask = TXD_INVERT_BIT | RXD_INVERT_BIT; reg_set16(SGMIIPHY_ADDR(COMPHY_SYNC_PATTERN, sd_ip_addr), data, mask); /* * 17. Set PHY input ports PIN_PU_PLL, PIN_PU_TX and PIN_PU_RX to 1 to * start PHY power up sequence. All the PHY register programming should * be done before PIN_PU_PLL=1. There should be no register programming * for normal PHY operation from this point. */ reg_set(MVEBU_COMPHY_REG_BASE + COMPHY_PHY_CFG1_OFFSET(comphy_index), PIN_PU_PLL_BIT | PIN_PU_RX_BIT | PIN_PU_TX_BIT, PIN_PU_PLL_BIT | PIN_PU_RX_BIT | PIN_PU_TX_BIT); /* * 18. Wait for PHY power up sequence to finish by checking output ports * PIN_PLL_READY_TX=1 and PIN_PLL_READY_RX=1. */ ret = polling_with_timeout(MVEBU_COMPHY_REG_BASE + COMPHY_PHY_STATUS_OFFSET(comphy_index), PHY_PLL_READY_TX_BIT | PHY_PLL_READY_RX_BIT, PHY_PLL_READY_TX_BIT | PHY_PLL_READY_RX_BIT, COMPHY_PLL_TIMEOUT, REG_32BIT); if (ret) { ERROR("Failed to lock PLL for SGMII PHY %d\n", comphy_index); return -ETIMEDOUT; } /* * 19. Set COMPHY input port PIN_TX_IDLE=0 */ reg_set(MVEBU_COMPHY_REG_BASE + COMPHY_PHY_CFG1_OFFSET(comphy_index), 0x0, PIN_TX_IDLE_BIT); /* * 20. After valid data appear on PIN_RXDATA bus, set PIN_RX_INIT=1. To * start RX initialization. PIN_RX_INIT_DONE will be cleared to 0 by the * PHY After RX initialization is done, PIN_RX_INIT_DONE will be set to * 1 by COMPHY Set PIN_RX_INIT=0 after PIN_RX_INIT_DONE= 1. Please * refer to RX initialization part for details. */ reg_set(MVEBU_COMPHY_REG_BASE + COMPHY_PHY_CFG1_OFFSET(comphy_index), PHY_RX_INIT_BIT, PHY_RX_INIT_BIT); ret = polling_with_timeout(MVEBU_COMPHY_REG_BASE + COMPHY_PHY_STATUS_OFFSET(comphy_index), PHY_PLL_READY_TX_BIT | PHY_PLL_READY_RX_BIT, PHY_PLL_READY_TX_BIT | PHY_PLL_READY_RX_BIT, COMPHY_PLL_TIMEOUT, REG_32BIT); if (ret) { ERROR("Failed to lock PLL for SGMII PHY %d\n", comphy_index); return -ETIMEDOUT; } ret = polling_with_timeout(MVEBU_COMPHY_REG_BASE + COMPHY_PHY_STATUS_OFFSET(comphy_index), PHY_RX_INIT_DONE_BIT, PHY_RX_INIT_DONE_BIT, COMPHY_PLL_TIMEOUT, REG_32BIT); if (ret) { ERROR("Failed to init RX of SGMII PHY %d\n", comphy_index); return -ETIMEDOUT; } debug_exit(); return 0; } static int mvebu_a3700_comphy_sgmii_power_off(uint8_t comphy_index) { uintptr_t offset; uint32_t mask, data; debug_enter(); data = PIN_RESET_CORE_BIT | PIN_RESET_COMPHY_BIT; mask = data; offset = MVEBU_COMPHY_REG_BASE + COMPHY_PHY_CFG1_OFFSET(comphy_index); reg_set(offset, data, mask); debug_exit(); return 0; } static int mvebu_a3700_comphy_usb3_power_on(uint8_t comphy_index, uint32_t comphy_mode) { int ret; uintptr_t reg_base = 0; uintptr_t addr; uint32_t mask, data, cfg, ref_clk; void (*usb3_reg_set)(uintptr_t addr, uint32_t reg_offset, uint16_t data, uint16_t mask); int invert = COMPHY_GET_POLARITY_INVERT(comphy_mode); debug_enter(); /* Set phy seclector */ ret = mvebu_a3700_comphy_set_phy_selector(comphy_index, comphy_mode); if (ret) { return ret; } /* Set usb3 reg access func, Lane2 is indirect access */ if (comphy_index == COMPHY_LANE2) { usb3_reg_set = &comphy_usb3_set_indirect; reg_base = COMPHY_INDIRECT_REG; } else { /* Get the direct access register resource and map */ usb3_reg_set = &comphy_usb3_set_direct; reg_base = USB3_GBE1_PHY; } /* * 0. Set PHY OTG Control(0x5d034), bit 4, Power up OTG module The * register belong to UTMI module, so it is set in UTMI phy driver. */ /* * 1. Set PRD_TXDEEMPH (3.5db de-emph) */ mask = PRD_TXDEEMPH0_MASK | PRD_TXMARGIN_MASK | PRD_TXSWING_MASK | CFG_TX_ALIGN_POS_MASK; usb3_reg_set(reg_base, COMPHY_LANE_CFG0, PRD_TXDEEMPH0_MASK, mask); /* * 2. Set BIT0: enable transmitter in high impedance mode * Set BIT[3:4]: delay 2 clock cycles for HiZ off latency * Set BIT6: Tx detect Rx at HiZ mode * Unset BIT15: set to 0 to set USB3 De-emphasize level to -3.5db * together with bit 0 of COMPHY_LANE_CFG0 register */ mask = PRD_TXDEEMPH1_MASK | TX_DET_RX_MODE | GEN2_TX_DATA_DLY_MASK | TX_ELEC_IDLE_MODE_EN; data = TX_DET_RX_MODE | GEN2_TX_DATA_DLY_DEFT | TX_ELEC_IDLE_MODE_EN; usb3_reg_set(reg_base, COMPHY_LANE_CFG1, data, mask); /* * 3. Set Spread Spectrum Clock Enabled */ usb3_reg_set(reg_base, COMPHY_LANE_CFG4, SPREAD_SPECTRUM_CLK_EN, SPREAD_SPECTRUM_CLK_EN); /* * 4. Set Override Margining Controls From the MAC: * Use margining signals from lane configuration */ usb3_reg_set(reg_base, COMPHY_TEST_MODE_CTRL, MODE_MARGIN_OVERRIDE, REG_16_BIT_MASK); /* * 5. Set Lane-to-Lane Bundle Clock Sampling Period = per PCLK cycles * set Mode Clock Source = PCLK is generated from REFCLK */ usb3_reg_set(reg_base, COMPHY_CLK_SRC_LO, 0x0, (MODE_CLK_SRC | BUNDLE_PERIOD_SEL | BUNDLE_PERIOD_SCALE_MASK | BUNDLE_SAMPLE_CTRL | PLL_READY_DLY_MASK)); /* * 6. Set G2 Spread Spectrum Clock Amplitude at 4K */ usb3_reg_set(reg_base, COMPHY_GEN2_SET2, GS2_TX_SSC_AMP_VALUE_20, GS2_TX_SSC_AMP_MASK); /* * 7. Unset G3 Spread Spectrum Clock Amplitude * set G3 TX and RX Register Master Current Select */ mask = GS2_TX_SSC_AMP_MASK | GS2_VREG_RXTX_MAS_ISET_MASK | GS2_RSVD_6_0_MASK; usb3_reg_set(reg_base, COMPHY_GEN3_SET2, GS2_VREG_RXTX_MAS_ISET_60U, mask); /* * 8. Check crystal jumper setting and program the Power and PLL Control * accordingly Change RX wait */ if (get_ref_clk() == 40) { ref_clk = REF_FREF_SEL_PCIE_USB3_40MHZ; cfg = CFG_PM_RXDLOZ_WAIT_12_UNIT; } else { /* 25 MHz */ ref_clk = REF_FREF_SEL_PCIE_USB3_25MHZ; cfg = CFG_PM_RXDLOZ_WAIT_7_UNIT; } mask = PU_IVREF_BIT | PU_PLL_BIT | PU_RX_BIT | PU_TX_BIT | PU_TX_INTP_BIT | PU_DFE_BIT | PLL_LOCK_BIT | PHY_MODE_MASK | REF_FREF_SEL_MASK; data = PU_IVREF_BIT | PU_PLL_BIT | PU_RX_BIT | PU_TX_BIT | PU_TX_INTP_BIT | PU_DFE_BIT | PHY_MODE_USB3 | ref_clk; usb3_reg_set(reg_base, COMPHY_POWER_PLL_CTRL, data, mask); mask = CFG_PM_OSCCLK_WAIT_MASK | CFG_PM_RXDEN_WAIT_MASK | CFG_PM_RXDLOZ_WAIT_MASK; data = CFG_PM_RXDEN_WAIT_1_UNIT | cfg; usb3_reg_set(reg_base, COMPHY_PWR_MGM_TIM1, data, mask); /* * 9. Enable idle sync */ data = IDLE_SYNC_EN_DEFAULT_VALUE | IDLE_SYNC_EN; usb3_reg_set(reg_base, COMPHY_IDLE_SYNC_EN, data, REG_16_BIT_MASK); /* * 10. Enable the output of 500M clock */ data = MISC_CTRL0_DEFAULT_VALUE | CLK500M_EN; usb3_reg_set(reg_base, COMPHY_MISC_CTRL0, data, REG_16_BIT_MASK); /* * 11. Set 20-bit data width */ usb3_reg_set(reg_base, COMPHY_DIG_LOOPBACK_EN, DATA_WIDTH_20BIT, REG_16_BIT_MASK); /* * 12. Override Speed_PLL value and use MAC PLL */ usb3_reg_set(reg_base, COMPHY_KVCO_CAL_CTRL, (SPEED_PLL_VALUE_16 | USE_MAX_PLL_RATE_BIT), REG_16_BIT_MASK); /* * 13. Check the Polarity invert bit */ data = 0U; if (invert & COMPHY_POLARITY_TXD_INVERT) { data |= TXD_INVERT_BIT; } if (invert & COMPHY_POLARITY_RXD_INVERT) { data |= RXD_INVERT_BIT; } mask = TXD_INVERT_BIT | RXD_INVERT_BIT; usb3_reg_set(reg_base, COMPHY_SYNC_PATTERN, data, mask); /* * 14. Set max speed generation to USB3.0 5Gbps */ usb3_reg_set(reg_base, COMPHY_SYNC_MASK_GEN, PHY_GEN_MAX_USB3_5G, PHY_GEN_MAX_MASK); /* * 15. Set capacitor value for FFE gain peaking to 0xF */ usb3_reg_set(reg_base, COMPHY_GEN2_SET3, GS3_FFE_CAP_SEL_VALUE, GS3_FFE_CAP_SEL_MASK); /* * 16. Release SW reset */ data = MODE_CORE_CLK_FREQ_SEL | MODE_PIPE_WIDTH_32 | MODE_REFDIV_BY_4; usb3_reg_set(reg_base, COMPHY_RST_CLK_CTRL, data, REG_16_BIT_MASK); /* Wait for > 55 us to allow PCLK be enabled */ udelay(PLL_SET_DELAY_US); if (comphy_index == COMPHY_LANE2) { data = COMPHY_LANE_STAT1 + USB3PHY_LANE2_REG_BASE_OFFSET; mmio_write_32(reg_base + COMPHY_LANE2_INDIR_ADDR_OFFSET, data); addr = reg_base + COMPHY_LANE2_INDIR_DATA_OFFSET; ret = polling_with_timeout(addr, TXDCLK_PCLK_EN, TXDCLK_PCLK_EN, COMPHY_PLL_TIMEOUT, REG_32BIT); } else { ret = polling_with_timeout(LANE_STAT1_ADDR(USB3) + reg_base, TXDCLK_PCLK_EN, TXDCLK_PCLK_EN, COMPHY_PLL_TIMEOUT, REG_16BIT); } if (ret) { ERROR("Failed to lock USB3 PLL\n"); return -ETIMEDOUT; } debug_exit(); return 0; } static int mvebu_a3700_comphy_pcie_power_on(uint8_t comphy_index, uint32_t comphy_mode) { int ret; uint32_t ref_clk; uint32_t mask, data; int invert = COMPHY_GET_POLARITY_INVERT(comphy_mode); debug_enter(); /* Configure phy selector for PCIe */ ret = mvebu_a3700_comphy_set_phy_selector(comphy_index, comphy_mode); if (ret) { return ret; } /* 1. Enable max PLL. */ reg_set16(LANE_CFG1_ADDR(PCIE) + COMPHY_SD_ADDR, USE_MAX_PLL_RATE_EN, USE_MAX_PLL_RATE_EN); /* 2. Select 20 bit SERDES interface. */ reg_set16(CLK_SRC_LO_ADDR(PCIE) + COMPHY_SD_ADDR, CFG_SEL_20B, CFG_SEL_20B); /* 3. Force to use reg setting for PCIe mode */ reg_set16(MISC_CTRL1_ADDR(PCIE) + COMPHY_SD_ADDR, SEL_BITS_PCIE_FORCE, SEL_BITS_PCIE_FORCE); /* 4. Change RX wait */ reg_set16(PWR_MGM_TIM1_ADDR(PCIE) + COMPHY_SD_ADDR, CFG_PM_RXDEN_WAIT_1_UNIT | CFG_PM_RXDLOZ_WAIT_12_UNIT, (CFG_PM_OSCCLK_WAIT_MASK | CFG_PM_RXDEN_WAIT_MASK | CFG_PM_RXDLOZ_WAIT_MASK)); /* 5. Enable idle sync */ reg_set16(IDLE_SYNC_EN_ADDR(PCIE) + COMPHY_SD_ADDR, IDLE_SYNC_EN_DEFAULT_VALUE | IDLE_SYNC_EN, REG_16_BIT_MASK); /* 6. Enable the output of 100M/125M/500M clock */ reg_set16(MISC_CTRL0_ADDR(PCIE) + COMPHY_SD_ADDR, MISC_CTRL0_DEFAULT_VALUE | CLK500M_EN | TXDCLK_2X_SEL | CLK100M_125M_EN, REG_16_BIT_MASK); /* * 7. Enable TX, PCIE global register, 0xd0074814, it is done in * PCI-E driver */ /* * 8. Check crystal jumper setting and program the Power and PLL * Control accordingly */ if (get_ref_clk() == 40) ref_clk = REF_FREF_SEL_PCIE_USB3_40MHZ; else ref_clk = REF_FREF_SEL_PCIE_USB3_25MHZ; reg_set16(PWR_PLL_CTRL_ADDR(PCIE) + COMPHY_SD_ADDR, (PU_IVREF_BIT | PU_PLL_BIT | PU_RX_BIT | PU_TX_BIT | PU_TX_INTP_BIT | PU_DFE_BIT | ref_clk | PHY_MODE_PCIE), REG_16_BIT_MASK); /* 9. Override Speed_PLL value and use MAC PLL */ reg_set16(KVCO_CAL_CTRL_ADDR(PCIE) + COMPHY_SD_ADDR, SPEED_PLL_VALUE_16 | USE_MAX_PLL_RATE_BIT, REG_16_BIT_MASK); /* 10. Check the Polarity invert bit */ data = 0U; if (invert & COMPHY_POLARITY_TXD_INVERT) { data |= TXD_INVERT_BIT; } if (invert & COMPHY_POLARITY_RXD_INVERT) { data |= RXD_INVERT_BIT; } mask = TXD_INVERT_BIT | RXD_INVERT_BIT; reg_set16(SYNC_PATTERN_ADDR(PCIE) + COMPHY_SD_ADDR, data, mask); /* 11. Release SW reset */ data = MODE_CORE_CLK_FREQ_SEL | MODE_PIPE_WIDTH_32; mask = data | SOFT_RESET | MODE_REFDIV_MASK; reg_set16(RST_CLK_CTRL_ADDR(PCIE) + COMPHY_SD_ADDR, data, mask); /* Wait for > 55 us to allow PCLK be enabled */ udelay(PLL_SET_DELAY_US); ret = polling_with_timeout(LANE_STAT1_ADDR(PCIE) + COMPHY_SD_ADDR, TXDCLK_PCLK_EN, TXDCLK_PCLK_EN, COMPHY_PLL_TIMEOUT, REG_16BIT); if (ret) { ERROR("Failed to lock PCIE PLL\n"); return -ETIMEDOUT; } debug_exit(); return 0; } int mvebu_3700_comphy_power_on(uint8_t comphy_index, uint32_t comphy_mode) { int mode = COMPHY_GET_MODE(comphy_mode); int ret = 0; debug_enter(); switch (mode) { case(COMPHY_SATA_MODE): ret = mvebu_a3700_comphy_sata_power_on(comphy_index, comphy_mode); break; case(COMPHY_SGMII_MODE): case(COMPHY_2500BASEX_MODE): ret = mvebu_a3700_comphy_sgmii_power_on(comphy_index, comphy_mode); break; case (COMPHY_USB3_MODE): case (COMPHY_USB3H_MODE): ret = mvebu_a3700_comphy_usb3_power_on(comphy_index, comphy_mode); break; case (COMPHY_PCIE_MODE): ret = mvebu_a3700_comphy_pcie_power_on(comphy_index, comphy_mode); break; default: ERROR("comphy%d: unsupported comphy mode\n", comphy_index); ret = -EINVAL; break; } debug_exit(); return ret; } static int mvebu_a3700_comphy_usb3_power_off(void) { /* * Currently the USB3 MAC will control the USB3 PHY to set it to low * state, thus do not need to power off USB3 PHY again. */ debug_enter(); debug_exit(); return 0; } static int mvebu_a3700_comphy_sata_power_off(void) { uintptr_t comphy_indir_regs = COMPHY_INDIRECT_REG; uint32_t offset; debug_enter(); /* Set phy isolation mode */ offset = COMPHY_ISOLATION_CTRL + SATAPHY_LANE2_REG_BASE_OFFSET; comphy_sata_set_indirect(comphy_indir_regs, offset, PHY_ISOLATE_MODE, PHY_ISOLATE_MODE); /* Power off PLL, Tx, Rx */ offset = COMPHY_POWER_PLL_CTRL + SATAPHY_LANE2_REG_BASE_OFFSET; comphy_sata_set_indirect(comphy_indir_regs, offset, 0, PU_PLL_BIT | PU_RX_BIT | PU_TX_BIT); debug_exit(); return 0; } int mvebu_3700_comphy_power_off(uint8_t comphy_index, uint32_t comphy_mode) { int mode = COMPHY_GET_MODE(comphy_mode); int err = 0; debug_enter(); if (!mode) { /* * The user did not specify which mode should be powered off. * In this case we can identify this by reading the phy selector * register. */ mode = mvebu_a3700_comphy_get_mode(comphy_index); } switch (mode) { case(COMPHY_SGMII_MODE): case(COMPHY_2500BASEX_MODE): err = mvebu_a3700_comphy_sgmii_power_off(comphy_index); break; case (COMPHY_USB3_MODE): case (COMPHY_USB3H_MODE): err = mvebu_a3700_comphy_usb3_power_off(); break; case (COMPHY_SATA_MODE): err = mvebu_a3700_comphy_sata_power_off(); break; default: debug("comphy%d: power off is not implemented for mode %d\n", comphy_index, mode); break; } debug_exit(); return err; } static int mvebu_a3700_comphy_sata_is_pll_locked(void) { uint32_t data, addr; uintptr_t comphy_indir_regs = COMPHY_INDIRECT_REG; int ret = 0; debug_enter(); /* Polling status */ mmio_write_32(comphy_indir_regs + COMPHY_LANE2_INDIR_ADDR_OFFSET, COMPHY_DIG_LOOPBACK_EN + SATAPHY_LANE2_REG_BASE_OFFSET); addr = comphy_indir_regs + COMPHY_LANE2_INDIR_DATA_OFFSET; data = polling_with_timeout(addr, PLL_READY_TX_BIT, PLL_READY_TX_BIT, COMPHY_PLL_TIMEOUT, REG_32BIT); if (data != 0) { ERROR("TX PLL is not locked\n"); ret = -ETIMEDOUT; } debug_exit(); return ret; } int mvebu_3700_comphy_is_pll_locked(uint8_t comphy_index, uint32_t comphy_mode) { int mode = COMPHY_GET_MODE(comphy_mode); int ret = 0; debug_enter(); switch (mode) { case(COMPHY_SATA_MODE): ret = mvebu_a3700_comphy_sata_is_pll_locked(); break; default: ERROR("comphy[%d] mode[%d] doesn't support PLL lock check\n", comphy_index, mode); ret = -EINVAL; break; } debug_exit(); return ret; }