833 строки
22 KiB
C
833 строки
22 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Broadcom SATA3 AHCI Controller PHY Driver
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*
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* Copyright (C) 2016 Broadcom
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*/
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/phy/phy.h>
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#include <linux/platform_device.h>
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#define SATA_PCB_BANK_OFFSET 0x23c
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#define SATA_PCB_REG_OFFSET(ofs) ((ofs) * 4)
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#define MAX_PORTS 2
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/* Register offset between PHYs in PCB space */
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#define SATA_PCB_REG_28NM_SPACE_SIZE 0x1000
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/* The older SATA PHY registers duplicated per port registers within the map,
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* rather than having a separate map per port.
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*/
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#define SATA_PCB_REG_40NM_SPACE_SIZE 0x10
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/* Register offset between PHYs in PHY control space */
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#define SATA_PHY_CTRL_REG_28NM_SPACE_SIZE 0x8
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enum brcm_sata_phy_version {
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BRCM_SATA_PHY_STB_16NM,
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BRCM_SATA_PHY_STB_28NM,
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BRCM_SATA_PHY_STB_40NM,
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BRCM_SATA_PHY_IPROC_NS2,
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BRCM_SATA_PHY_IPROC_NSP,
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BRCM_SATA_PHY_IPROC_SR,
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BRCM_SATA_PHY_DSL_28NM,
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};
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enum brcm_sata_phy_rxaeq_mode {
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RXAEQ_MODE_OFF = 0,
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RXAEQ_MODE_AUTO,
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RXAEQ_MODE_MANUAL,
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};
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static enum brcm_sata_phy_rxaeq_mode rxaeq_to_val(const char *m)
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{
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if (!strcmp(m, "auto"))
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return RXAEQ_MODE_AUTO;
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else if (!strcmp(m, "manual"))
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return RXAEQ_MODE_MANUAL;
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else
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return RXAEQ_MODE_OFF;
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}
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struct brcm_sata_port {
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int portnum;
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struct phy *phy;
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struct brcm_sata_phy *phy_priv;
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bool ssc_en;
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enum brcm_sata_phy_rxaeq_mode rxaeq_mode;
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u32 rxaeq_val;
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};
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struct brcm_sata_phy {
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struct device *dev;
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void __iomem *phy_base;
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void __iomem *ctrl_base;
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enum brcm_sata_phy_version version;
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struct brcm_sata_port phys[MAX_PORTS];
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};
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enum sata_phy_regs {
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BLOCK0_REG_BANK = 0x000,
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BLOCK0_XGXSSTATUS = 0x81,
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BLOCK0_XGXSSTATUS_PLL_LOCK = BIT(12),
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BLOCK0_SPARE = 0x8d,
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BLOCK0_SPARE_OOB_CLK_SEL_MASK = 0x3,
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BLOCK0_SPARE_OOB_CLK_SEL_REFBY2 = 0x1,
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PLL_REG_BANK_0 = 0x050,
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PLL_REG_BANK_0_PLLCONTROL_0 = 0x81,
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PLLCONTROL_0_FREQ_DET_RESTART = BIT(13),
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PLLCONTROL_0_FREQ_MONITOR = BIT(12),
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PLLCONTROL_0_SEQ_START = BIT(15),
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PLL_CAP_CHARGE_TIME = 0x83,
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PLL_VCO_CAL_THRESH = 0x84,
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PLL_CAP_CONTROL = 0x85,
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PLL_FREQ_DET_TIME = 0x86,
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PLL_ACTRL2 = 0x8b,
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PLL_ACTRL2_SELDIV_MASK = 0x1f,
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PLL_ACTRL2_SELDIV_SHIFT = 9,
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PLL_ACTRL6 = 0x86,
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PLL1_REG_BANK = 0x060,
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PLL1_ACTRL2 = 0x82,
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PLL1_ACTRL3 = 0x83,
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PLL1_ACTRL4 = 0x84,
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PLL1_ACTRL5 = 0x85,
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PLL1_ACTRL6 = 0x86,
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PLL1_ACTRL7 = 0x87,
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PLL1_ACTRL8 = 0x88,
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TX_REG_BANK = 0x070,
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TX_ACTRL0 = 0x80,
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TX_ACTRL0_TXPOL_FLIP = BIT(6),
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TX_ACTRL5 = 0x85,
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TX_ACTRL5_SSC_EN = BIT(11),
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AEQRX_REG_BANK_0 = 0xd0,
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AEQ_CONTROL1 = 0x81,
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AEQ_CONTROL1_ENABLE = BIT(2),
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AEQ_CONTROL1_FREEZE = BIT(3),
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AEQ_FRC_EQ = 0x83,
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AEQ_FRC_EQ_FORCE = BIT(0),
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AEQ_FRC_EQ_FORCE_VAL = BIT(1),
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AEQ_RFZ_FRC_VAL = BIT(8),
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AEQRX_REG_BANK_1 = 0xe0,
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AEQRX_SLCAL0_CTRL0 = 0x82,
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AEQRX_SLCAL1_CTRL0 = 0x86,
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OOB_REG_BANK = 0x150,
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OOB1_REG_BANK = 0x160,
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OOB_CTRL1 = 0x80,
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OOB_CTRL1_BURST_MAX_MASK = 0xf,
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OOB_CTRL1_BURST_MAX_SHIFT = 12,
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OOB_CTRL1_BURST_MIN_MASK = 0xf,
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OOB_CTRL1_BURST_MIN_SHIFT = 8,
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OOB_CTRL1_WAKE_IDLE_MAX_MASK = 0xf,
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OOB_CTRL1_WAKE_IDLE_MAX_SHIFT = 4,
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OOB_CTRL1_WAKE_IDLE_MIN_MASK = 0xf,
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OOB_CTRL1_WAKE_IDLE_MIN_SHIFT = 0,
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OOB_CTRL2 = 0x81,
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OOB_CTRL2_SEL_ENA_SHIFT = 15,
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OOB_CTRL2_SEL_ENA_RC_SHIFT = 14,
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OOB_CTRL2_RESET_IDLE_MAX_MASK = 0x3f,
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OOB_CTRL2_RESET_IDLE_MAX_SHIFT = 8,
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OOB_CTRL2_BURST_CNT_MASK = 0x3,
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OOB_CTRL2_BURST_CNT_SHIFT = 6,
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OOB_CTRL2_RESET_IDLE_MIN_MASK = 0x3f,
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OOB_CTRL2_RESET_IDLE_MIN_SHIFT = 0,
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TXPMD_REG_BANK = 0x1a0,
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TXPMD_CONTROL1 = 0x81,
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TXPMD_CONTROL1_TX_SSC_EN_FRC = BIT(0),
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TXPMD_CONTROL1_TX_SSC_EN_FRC_VAL = BIT(1),
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TXPMD_TX_FREQ_CTRL_CONTROL1 = 0x82,
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TXPMD_TX_FREQ_CTRL_CONTROL2 = 0x83,
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TXPMD_TX_FREQ_CTRL_CONTROL2_FMIN_MASK = 0x3ff,
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TXPMD_TX_FREQ_CTRL_CONTROL3 = 0x84,
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TXPMD_TX_FREQ_CTRL_CONTROL3_FMAX_MASK = 0x3ff,
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RXPMD_REG_BANK = 0x1c0,
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RXPMD_RX_CDR_CONTROL1 = 0x81,
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RXPMD_RX_PPM_VAL_MASK = 0x1ff,
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RXPMD_RXPMD_EN_FRC = BIT(12),
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RXPMD_RXPMD_EN_FRC_VAL = BIT(13),
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RXPMD_RX_CDR_CDR_PROP_BW = 0x82,
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RXPMD_G_CDR_PROP_BW_MASK = 0x7,
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RXPMD_G1_CDR_PROP_BW_SHIFT = 0,
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RXPMD_G2_CDR_PROP_BW_SHIFT = 3,
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RXPMD_G3_CDR_PROB_BW_SHIFT = 6,
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RXPMD_RX_CDR_CDR_ACQ_INTEG_BW = 0x83,
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RXPMD_G_CDR_ACQ_INT_BW_MASK = 0x7,
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RXPMD_G1_CDR_ACQ_INT_BW_SHIFT = 0,
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RXPMD_G2_CDR_ACQ_INT_BW_SHIFT = 3,
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RXPMD_G3_CDR_ACQ_INT_BW_SHIFT = 6,
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RXPMD_RX_CDR_CDR_LOCK_INTEG_BW = 0x84,
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RXPMD_G_CDR_LOCK_INT_BW_MASK = 0x7,
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RXPMD_G1_CDR_LOCK_INT_BW_SHIFT = 0,
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RXPMD_G2_CDR_LOCK_INT_BW_SHIFT = 3,
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RXPMD_G3_CDR_LOCK_INT_BW_SHIFT = 6,
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RXPMD_RX_FREQ_MON_CONTROL1 = 0x87,
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RXPMD_MON_CORRECT_EN = BIT(8),
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RXPMD_MON_MARGIN_VAL_MASK = 0xff,
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};
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enum sata_phy_ctrl_regs {
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PHY_CTRL_1 = 0x0,
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PHY_CTRL_1_RESET = BIT(0),
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};
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static inline void __iomem *brcm_sata_ctrl_base(struct brcm_sata_port *port)
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{
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struct brcm_sata_phy *priv = port->phy_priv;
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u32 size = 0;
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switch (priv->version) {
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case BRCM_SATA_PHY_IPROC_NS2:
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size = SATA_PHY_CTRL_REG_28NM_SPACE_SIZE;
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break;
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default:
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dev_err(priv->dev, "invalid phy version\n");
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break;
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}
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return priv->ctrl_base + (port->portnum * size);
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}
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static void brcm_sata_phy_wr(struct brcm_sata_port *port, u32 bank,
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u32 ofs, u32 msk, u32 value)
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{
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struct brcm_sata_phy *priv = port->phy_priv;
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void __iomem *pcb_base = priv->phy_base;
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u32 tmp;
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if (priv->version == BRCM_SATA_PHY_STB_40NM)
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bank += (port->portnum * SATA_PCB_REG_40NM_SPACE_SIZE);
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else
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pcb_base += (port->portnum * SATA_PCB_REG_28NM_SPACE_SIZE);
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writel(bank, pcb_base + SATA_PCB_BANK_OFFSET);
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tmp = readl(pcb_base + SATA_PCB_REG_OFFSET(ofs));
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tmp = (tmp & msk) | value;
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writel(tmp, pcb_base + SATA_PCB_REG_OFFSET(ofs));
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}
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static u32 brcm_sata_phy_rd(struct brcm_sata_port *port, u32 bank, u32 ofs)
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{
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struct brcm_sata_phy *priv = port->phy_priv;
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void __iomem *pcb_base = priv->phy_base;
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if (priv->version == BRCM_SATA_PHY_STB_40NM)
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bank += (port->portnum * SATA_PCB_REG_40NM_SPACE_SIZE);
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else
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pcb_base += (port->portnum * SATA_PCB_REG_28NM_SPACE_SIZE);
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writel(bank, pcb_base + SATA_PCB_BANK_OFFSET);
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return readl(pcb_base + SATA_PCB_REG_OFFSET(ofs));
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}
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/* These defaults were characterized by H/W group */
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#define STB_FMIN_VAL_DEFAULT 0x3df
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#define STB_FMAX_VAL_DEFAULT 0x3df
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#define STB_FMAX_VAL_SSC 0x83
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static void brcm_stb_sata_ssc_init(struct brcm_sata_port *port)
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{
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struct brcm_sata_phy *priv = port->phy_priv;
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u32 tmp;
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/* override the TX spread spectrum setting */
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tmp = TXPMD_CONTROL1_TX_SSC_EN_FRC_VAL | TXPMD_CONTROL1_TX_SSC_EN_FRC;
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brcm_sata_phy_wr(port, TXPMD_REG_BANK, TXPMD_CONTROL1, ~tmp, tmp);
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/* set fixed min freq */
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brcm_sata_phy_wr(port, TXPMD_REG_BANK, TXPMD_TX_FREQ_CTRL_CONTROL2,
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~TXPMD_TX_FREQ_CTRL_CONTROL2_FMIN_MASK,
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STB_FMIN_VAL_DEFAULT);
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/* set fixed max freq depending on SSC config */
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if (port->ssc_en) {
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dev_info(priv->dev, "enabling SSC on port%d\n", port->portnum);
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tmp = STB_FMAX_VAL_SSC;
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} else {
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tmp = STB_FMAX_VAL_DEFAULT;
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}
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brcm_sata_phy_wr(port, TXPMD_REG_BANK, TXPMD_TX_FREQ_CTRL_CONTROL3,
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~TXPMD_TX_FREQ_CTRL_CONTROL3_FMAX_MASK, tmp);
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}
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#define AEQ_FRC_EQ_VAL_SHIFT 2
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#define AEQ_FRC_EQ_VAL_MASK 0x3f
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static int brcm_stb_sata_rxaeq_init(struct brcm_sata_port *port)
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{
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u32 tmp = 0, reg = 0;
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switch (port->rxaeq_mode) {
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case RXAEQ_MODE_OFF:
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return 0;
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case RXAEQ_MODE_AUTO:
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reg = AEQ_CONTROL1;
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tmp = AEQ_CONTROL1_ENABLE | AEQ_CONTROL1_FREEZE;
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break;
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case RXAEQ_MODE_MANUAL:
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reg = AEQ_FRC_EQ;
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tmp = AEQ_FRC_EQ_FORCE | AEQ_FRC_EQ_FORCE_VAL;
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if (port->rxaeq_val > AEQ_FRC_EQ_VAL_MASK)
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return -EINVAL;
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tmp |= port->rxaeq_val << AEQ_FRC_EQ_VAL_SHIFT;
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break;
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}
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brcm_sata_phy_wr(port, AEQRX_REG_BANK_0, reg, ~tmp, tmp);
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brcm_sata_phy_wr(port, AEQRX_REG_BANK_1, reg, ~tmp, tmp);
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return 0;
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}
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static int brcm_stb_sata_init(struct brcm_sata_port *port)
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{
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brcm_stb_sata_ssc_init(port);
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return brcm_stb_sata_rxaeq_init(port);
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}
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static int brcm_stb_sata_16nm_ssc_init(struct brcm_sata_port *port)
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{
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u32 tmp, value;
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/* Reduce CP tail current to 1/16th of its default value */
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brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL6, 0, 0x141);
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/* Turn off CP tail current boost */
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brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL8, 0, 0xc006);
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/* Set a specific AEQ equalizer value */
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tmp = AEQ_FRC_EQ_FORCE_VAL | AEQ_FRC_EQ_FORCE;
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brcm_sata_phy_wr(port, AEQRX_REG_BANK_0, AEQ_FRC_EQ,
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~(tmp | AEQ_RFZ_FRC_VAL |
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AEQ_FRC_EQ_VAL_MASK << AEQ_FRC_EQ_VAL_SHIFT),
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tmp | 32 << AEQ_FRC_EQ_VAL_SHIFT);
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/* Set RX PPM val center frequency */
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if (port->ssc_en)
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value = 0x52;
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else
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value = 0;
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brcm_sata_phy_wr(port, RXPMD_REG_BANK, RXPMD_RX_CDR_CONTROL1,
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~RXPMD_RX_PPM_VAL_MASK, value);
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/* Set proportional loop bandwith Gen1/2/3 */
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tmp = RXPMD_G_CDR_PROP_BW_MASK << RXPMD_G1_CDR_PROP_BW_SHIFT |
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RXPMD_G_CDR_PROP_BW_MASK << RXPMD_G2_CDR_PROP_BW_SHIFT |
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RXPMD_G_CDR_PROP_BW_MASK << RXPMD_G3_CDR_PROB_BW_SHIFT;
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if (port->ssc_en)
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value = 2 << RXPMD_G1_CDR_PROP_BW_SHIFT |
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2 << RXPMD_G2_CDR_PROP_BW_SHIFT |
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2 << RXPMD_G3_CDR_PROB_BW_SHIFT;
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else
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value = 1 << RXPMD_G1_CDR_PROP_BW_SHIFT |
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1 << RXPMD_G2_CDR_PROP_BW_SHIFT |
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1 << RXPMD_G3_CDR_PROB_BW_SHIFT;
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brcm_sata_phy_wr(port, RXPMD_REG_BANK, RXPMD_RX_CDR_CDR_PROP_BW, ~tmp,
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value);
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/* Set CDR integral loop acquisition bandwidth for Gen1/2/3 */
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tmp = RXPMD_G_CDR_ACQ_INT_BW_MASK << RXPMD_G1_CDR_ACQ_INT_BW_SHIFT |
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RXPMD_G_CDR_ACQ_INT_BW_MASK << RXPMD_G2_CDR_ACQ_INT_BW_SHIFT |
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RXPMD_G_CDR_ACQ_INT_BW_MASK << RXPMD_G3_CDR_ACQ_INT_BW_SHIFT;
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if (port->ssc_en)
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value = 1 << RXPMD_G1_CDR_ACQ_INT_BW_SHIFT |
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1 << RXPMD_G2_CDR_ACQ_INT_BW_SHIFT |
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1 << RXPMD_G3_CDR_ACQ_INT_BW_SHIFT;
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else
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value = 0;
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brcm_sata_phy_wr(port, RXPMD_REG_BANK, RXPMD_RX_CDR_CDR_ACQ_INTEG_BW,
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~tmp, value);
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/* Set CDR integral loop locking bandwidth to 1 for Gen 1/2/3 */
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tmp = RXPMD_G_CDR_LOCK_INT_BW_MASK << RXPMD_G1_CDR_LOCK_INT_BW_SHIFT |
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RXPMD_G_CDR_LOCK_INT_BW_MASK << RXPMD_G2_CDR_LOCK_INT_BW_SHIFT |
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RXPMD_G_CDR_LOCK_INT_BW_MASK << RXPMD_G3_CDR_LOCK_INT_BW_SHIFT;
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if (port->ssc_en)
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value = 1 << RXPMD_G1_CDR_LOCK_INT_BW_SHIFT |
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1 << RXPMD_G2_CDR_LOCK_INT_BW_SHIFT |
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1 << RXPMD_G3_CDR_LOCK_INT_BW_SHIFT;
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else
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value = 0;
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brcm_sata_phy_wr(port, RXPMD_REG_BANK, RXPMD_RX_CDR_CDR_LOCK_INTEG_BW,
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~tmp, value);
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/* Set no guard band and clamp CDR */
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tmp = RXPMD_MON_CORRECT_EN | RXPMD_MON_MARGIN_VAL_MASK;
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if (port->ssc_en)
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value = 0x51;
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else
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value = 0;
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brcm_sata_phy_wr(port, RXPMD_REG_BANK, RXPMD_RX_FREQ_MON_CONTROL1,
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~tmp, RXPMD_MON_CORRECT_EN | value);
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/* Turn on/off SSC */
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brcm_sata_phy_wr(port, TX_REG_BANK, TX_ACTRL5, ~TX_ACTRL5_SSC_EN,
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port->ssc_en ? TX_ACTRL5_SSC_EN : 0);
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return 0;
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}
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static int brcm_stb_sata_16nm_init(struct brcm_sata_port *port)
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{
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return brcm_stb_sata_16nm_ssc_init(port);
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}
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/* NS2 SATA PLL1 defaults were characterized by H/W group */
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#define NS2_PLL1_ACTRL2_MAGIC 0x1df8
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#define NS2_PLL1_ACTRL3_MAGIC 0x2b00
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#define NS2_PLL1_ACTRL4_MAGIC 0x8824
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static int brcm_ns2_sata_init(struct brcm_sata_port *port)
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{
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int try;
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unsigned int val;
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void __iomem *ctrl_base = brcm_sata_ctrl_base(port);
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struct device *dev = port->phy_priv->dev;
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/* Configure OOB control */
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val = 0x0;
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val |= (0xc << OOB_CTRL1_BURST_MAX_SHIFT);
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val |= (0x4 << OOB_CTRL1_BURST_MIN_SHIFT);
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|
val |= (0x9 << OOB_CTRL1_WAKE_IDLE_MAX_SHIFT);
|
|
val |= (0x3 << OOB_CTRL1_WAKE_IDLE_MIN_SHIFT);
|
|
brcm_sata_phy_wr(port, OOB_REG_BANK, OOB_CTRL1, 0x0, val);
|
|
val = 0x0;
|
|
val |= (0x1b << OOB_CTRL2_RESET_IDLE_MAX_SHIFT);
|
|
val |= (0x2 << OOB_CTRL2_BURST_CNT_SHIFT);
|
|
val |= (0x9 << OOB_CTRL2_RESET_IDLE_MIN_SHIFT);
|
|
brcm_sata_phy_wr(port, OOB_REG_BANK, OOB_CTRL2, 0x0, val);
|
|
|
|
/* Configure PHY PLL register bank 1 */
|
|
val = NS2_PLL1_ACTRL2_MAGIC;
|
|
brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL2, 0x0, val);
|
|
val = NS2_PLL1_ACTRL3_MAGIC;
|
|
brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL3, 0x0, val);
|
|
val = NS2_PLL1_ACTRL4_MAGIC;
|
|
brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL4, 0x0, val);
|
|
|
|
/* Configure PHY BLOCK0 register bank */
|
|
/* Set oob_clk_sel to refclk/2 */
|
|
brcm_sata_phy_wr(port, BLOCK0_REG_BANK, BLOCK0_SPARE,
|
|
~BLOCK0_SPARE_OOB_CLK_SEL_MASK,
|
|
BLOCK0_SPARE_OOB_CLK_SEL_REFBY2);
|
|
|
|
/* Strobe PHY reset using PHY control register */
|
|
writel(PHY_CTRL_1_RESET, ctrl_base + PHY_CTRL_1);
|
|
mdelay(1);
|
|
writel(0x0, ctrl_base + PHY_CTRL_1);
|
|
mdelay(1);
|
|
|
|
/* Wait for PHY PLL lock by polling pll_lock bit */
|
|
try = 50;
|
|
while (try) {
|
|
val = brcm_sata_phy_rd(port, BLOCK0_REG_BANK,
|
|
BLOCK0_XGXSSTATUS);
|
|
if (val & BLOCK0_XGXSSTATUS_PLL_LOCK)
|
|
break;
|
|
msleep(20);
|
|
try--;
|
|
}
|
|
if (!try) {
|
|
/* PLL did not lock; give up */
|
|
dev_err(dev, "port%d PLL did not lock\n", port->portnum);
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
dev_dbg(dev, "port%d initialized\n", port->portnum);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int brcm_nsp_sata_init(struct brcm_sata_port *port)
|
|
{
|
|
struct device *dev = port->phy_priv->dev;
|
|
unsigned int oob_bank;
|
|
unsigned int val, try;
|
|
|
|
/* Configure OOB control */
|
|
if (port->portnum == 0)
|
|
oob_bank = OOB_REG_BANK;
|
|
else if (port->portnum == 1)
|
|
oob_bank = OOB1_REG_BANK;
|
|
else
|
|
return -EINVAL;
|
|
|
|
val = 0x0;
|
|
val |= (0x0f << OOB_CTRL1_BURST_MAX_SHIFT);
|
|
val |= (0x06 << OOB_CTRL1_BURST_MIN_SHIFT);
|
|
val |= (0x0f << OOB_CTRL1_WAKE_IDLE_MAX_SHIFT);
|
|
val |= (0x06 << OOB_CTRL1_WAKE_IDLE_MIN_SHIFT);
|
|
brcm_sata_phy_wr(port, oob_bank, OOB_CTRL1, 0x0, val);
|
|
|
|
val = 0x0;
|
|
val |= (0x2e << OOB_CTRL2_RESET_IDLE_MAX_SHIFT);
|
|
val |= (0x02 << OOB_CTRL2_BURST_CNT_SHIFT);
|
|
val |= (0x16 << OOB_CTRL2_RESET_IDLE_MIN_SHIFT);
|
|
brcm_sata_phy_wr(port, oob_bank, OOB_CTRL2, 0x0, val);
|
|
|
|
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_ACTRL2,
|
|
~(PLL_ACTRL2_SELDIV_MASK << PLL_ACTRL2_SELDIV_SHIFT),
|
|
0x0c << PLL_ACTRL2_SELDIV_SHIFT);
|
|
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_CAP_CONTROL,
|
|
0xff0, 0x4f0);
|
|
|
|
val = PLLCONTROL_0_FREQ_DET_RESTART | PLLCONTROL_0_FREQ_MONITOR;
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_REG_BANK_0_PLLCONTROL_0,
|
|
~val, val);
|
|
val = PLLCONTROL_0_SEQ_START;
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_REG_BANK_0_PLLCONTROL_0,
|
|
~val, 0);
|
|
mdelay(10);
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_REG_BANK_0_PLLCONTROL_0,
|
|
~val, val);
|
|
|
|
/* Wait for pll_seq_done bit */
|
|
try = 50;
|
|
while (--try) {
|
|
val = brcm_sata_phy_rd(port, BLOCK0_REG_BANK,
|
|
BLOCK0_XGXSSTATUS);
|
|
if (val & BLOCK0_XGXSSTATUS_PLL_LOCK)
|
|
break;
|
|
msleep(20);
|
|
}
|
|
if (!try) {
|
|
/* PLL did not lock; give up */
|
|
dev_err(dev, "port%d PLL did not lock\n", port->portnum);
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
dev_dbg(dev, "port%d initialized\n", port->portnum);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* SR PHY PLL0 registers */
|
|
#define SR_PLL0_ACTRL6_MAGIC 0xa
|
|
|
|
/* SR PHY PLL1 registers */
|
|
#define SR_PLL1_ACTRL2_MAGIC 0x32
|
|
#define SR_PLL1_ACTRL3_MAGIC 0x2
|
|
#define SR_PLL1_ACTRL4_MAGIC 0x3e8
|
|
|
|
static int brcm_sr_sata_init(struct brcm_sata_port *port)
|
|
{
|
|
struct device *dev = port->phy_priv->dev;
|
|
unsigned int val, try;
|
|
|
|
/* Configure PHY PLL register bank 1 */
|
|
val = SR_PLL1_ACTRL2_MAGIC;
|
|
brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL2, 0x0, val);
|
|
val = SR_PLL1_ACTRL3_MAGIC;
|
|
brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL3, 0x0, val);
|
|
val = SR_PLL1_ACTRL4_MAGIC;
|
|
brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL4, 0x0, val);
|
|
|
|
/* Configure PHY PLL register bank 0 */
|
|
val = SR_PLL0_ACTRL6_MAGIC;
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_ACTRL6, 0x0, val);
|
|
|
|
/* Wait for PHY PLL lock by polling pll_lock bit */
|
|
try = 50;
|
|
do {
|
|
val = brcm_sata_phy_rd(port, BLOCK0_REG_BANK,
|
|
BLOCK0_XGXSSTATUS);
|
|
if (val & BLOCK0_XGXSSTATUS_PLL_LOCK)
|
|
break;
|
|
msleep(20);
|
|
try--;
|
|
} while (try);
|
|
|
|
if ((val & BLOCK0_XGXSSTATUS_PLL_LOCK) == 0) {
|
|
/* PLL did not lock; give up */
|
|
dev_err(dev, "port%d PLL did not lock\n", port->portnum);
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
/* Invert Tx polarity */
|
|
brcm_sata_phy_wr(port, TX_REG_BANK, TX_ACTRL0,
|
|
~TX_ACTRL0_TXPOL_FLIP, TX_ACTRL0_TXPOL_FLIP);
|
|
|
|
/* Configure OOB control to handle 100MHz reference clock */
|
|
val = ((0xc << OOB_CTRL1_BURST_MAX_SHIFT) |
|
|
(0x4 << OOB_CTRL1_BURST_MIN_SHIFT) |
|
|
(0x8 << OOB_CTRL1_WAKE_IDLE_MAX_SHIFT) |
|
|
(0x3 << OOB_CTRL1_WAKE_IDLE_MIN_SHIFT));
|
|
brcm_sata_phy_wr(port, OOB_REG_BANK, OOB_CTRL1, 0x0, val);
|
|
val = ((0x1b << OOB_CTRL2_RESET_IDLE_MAX_SHIFT) |
|
|
(0x2 << OOB_CTRL2_BURST_CNT_SHIFT) |
|
|
(0x9 << OOB_CTRL2_RESET_IDLE_MIN_SHIFT));
|
|
brcm_sata_phy_wr(port, OOB_REG_BANK, OOB_CTRL2, 0x0, val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int brcm_dsl_sata_init(struct brcm_sata_port *port)
|
|
{
|
|
struct device *dev = port->phy_priv->dev;
|
|
unsigned int try;
|
|
u32 tmp;
|
|
|
|
brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL7, 0, 0x873);
|
|
|
|
brcm_sata_phy_wr(port, PLL1_REG_BANK, PLL1_ACTRL6, 0, 0xc000);
|
|
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_REG_BANK_0_PLLCONTROL_0,
|
|
0, 0x3089);
|
|
usleep_range(1000, 2000);
|
|
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_REG_BANK_0_PLLCONTROL_0,
|
|
0, 0x3088);
|
|
usleep_range(1000, 2000);
|
|
|
|
brcm_sata_phy_wr(port, AEQRX_REG_BANK_1, AEQRX_SLCAL0_CTRL0,
|
|
0, 0x3000);
|
|
|
|
brcm_sata_phy_wr(port, AEQRX_REG_BANK_1, AEQRX_SLCAL1_CTRL0,
|
|
0, 0x3000);
|
|
usleep_range(1000, 2000);
|
|
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_CAP_CHARGE_TIME, 0, 0x32);
|
|
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_VCO_CAL_THRESH, 0, 0xa);
|
|
|
|
brcm_sata_phy_wr(port, PLL_REG_BANK_0, PLL_FREQ_DET_TIME, 0, 0x64);
|
|
usleep_range(1000, 2000);
|
|
|
|
/* Acquire PLL lock */
|
|
try = 50;
|
|
while (try) {
|
|
tmp = brcm_sata_phy_rd(port, BLOCK0_REG_BANK,
|
|
BLOCK0_XGXSSTATUS);
|
|
if (tmp & BLOCK0_XGXSSTATUS_PLL_LOCK)
|
|
break;
|
|
msleep(20);
|
|
try--;
|
|
};
|
|
|
|
if (!try) {
|
|
/* PLL did not lock; give up */
|
|
dev_err(dev, "port%d PLL did not lock\n", port->portnum);
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
dev_dbg(dev, "port%d initialized\n", port->portnum);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int brcm_sata_phy_init(struct phy *phy)
|
|
{
|
|
int rc;
|
|
struct brcm_sata_port *port = phy_get_drvdata(phy);
|
|
|
|
switch (port->phy_priv->version) {
|
|
case BRCM_SATA_PHY_STB_16NM:
|
|
rc = brcm_stb_sata_16nm_init(port);
|
|
break;
|
|
case BRCM_SATA_PHY_STB_28NM:
|
|
case BRCM_SATA_PHY_STB_40NM:
|
|
rc = brcm_stb_sata_init(port);
|
|
break;
|
|
case BRCM_SATA_PHY_IPROC_NS2:
|
|
rc = brcm_ns2_sata_init(port);
|
|
break;
|
|
case BRCM_SATA_PHY_IPROC_NSP:
|
|
rc = brcm_nsp_sata_init(port);
|
|
break;
|
|
case BRCM_SATA_PHY_IPROC_SR:
|
|
rc = brcm_sr_sata_init(port);
|
|
break;
|
|
case BRCM_SATA_PHY_DSL_28NM:
|
|
rc = brcm_dsl_sata_init(port);
|
|
break;
|
|
default:
|
|
rc = -ENODEV;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void brcm_stb_sata_calibrate(struct brcm_sata_port *port)
|
|
{
|
|
u32 tmp = BIT(8);
|
|
|
|
brcm_sata_phy_wr(port, RXPMD_REG_BANK, RXPMD_RX_FREQ_MON_CONTROL1,
|
|
~tmp, tmp);
|
|
}
|
|
|
|
static int brcm_sata_phy_calibrate(struct phy *phy)
|
|
{
|
|
struct brcm_sata_port *port = phy_get_drvdata(phy);
|
|
int rc = -EOPNOTSUPP;
|
|
|
|
switch (port->phy_priv->version) {
|
|
case BRCM_SATA_PHY_STB_28NM:
|
|
case BRCM_SATA_PHY_STB_40NM:
|
|
brcm_stb_sata_calibrate(port);
|
|
rc = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static const struct phy_ops phy_ops = {
|
|
.init = brcm_sata_phy_init,
|
|
.calibrate = brcm_sata_phy_calibrate,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static const struct of_device_id brcm_sata_phy_of_match[] = {
|
|
{ .compatible = "brcm,bcm7216-sata-phy",
|
|
.data = (void *)BRCM_SATA_PHY_STB_16NM },
|
|
{ .compatible = "brcm,bcm7445-sata-phy",
|
|
.data = (void *)BRCM_SATA_PHY_STB_28NM },
|
|
{ .compatible = "brcm,bcm7425-sata-phy",
|
|
.data = (void *)BRCM_SATA_PHY_STB_40NM },
|
|
{ .compatible = "brcm,iproc-ns2-sata-phy",
|
|
.data = (void *)BRCM_SATA_PHY_IPROC_NS2 },
|
|
{ .compatible = "brcm,iproc-nsp-sata-phy",
|
|
.data = (void *)BRCM_SATA_PHY_IPROC_NSP },
|
|
{ .compatible = "brcm,iproc-sr-sata-phy",
|
|
.data = (void *)BRCM_SATA_PHY_IPROC_SR },
|
|
{ .compatible = "brcm,bcm63138-sata-phy",
|
|
.data = (void *)BRCM_SATA_PHY_DSL_28NM },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, brcm_sata_phy_of_match);
|
|
|
|
static int brcm_sata_phy_probe(struct platform_device *pdev)
|
|
{
|
|
const char *rxaeq_mode;
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *dn = dev->of_node, *child;
|
|
const struct of_device_id *of_id;
|
|
struct brcm_sata_phy *priv;
|
|
struct resource *res;
|
|
struct phy_provider *provider;
|
|
int ret, count = 0;
|
|
|
|
if (of_get_child_count(dn) == 0)
|
|
return -ENODEV;
|
|
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
dev_set_drvdata(dev, priv);
|
|
priv->dev = dev;
|
|
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
|
|
priv->phy_base = devm_ioremap_resource(dev, res);
|
|
if (IS_ERR(priv->phy_base))
|
|
return PTR_ERR(priv->phy_base);
|
|
|
|
of_id = of_match_node(brcm_sata_phy_of_match, dn);
|
|
if (of_id)
|
|
priv->version = (enum brcm_sata_phy_version)of_id->data;
|
|
else
|
|
priv->version = BRCM_SATA_PHY_STB_28NM;
|
|
|
|
if (priv->version == BRCM_SATA_PHY_IPROC_NS2) {
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
|
|
"phy-ctrl");
|
|
priv->ctrl_base = devm_ioremap_resource(dev, res);
|
|
if (IS_ERR(priv->ctrl_base))
|
|
return PTR_ERR(priv->ctrl_base);
|
|
}
|
|
|
|
for_each_available_child_of_node(dn, child) {
|
|
unsigned int id;
|
|
struct brcm_sata_port *port;
|
|
|
|
if (of_property_read_u32(child, "reg", &id)) {
|
|
dev_err(dev, "missing reg property in node %pOFn\n",
|
|
child);
|
|
ret = -EINVAL;
|
|
goto put_child;
|
|
}
|
|
|
|
if (id >= MAX_PORTS) {
|
|
dev_err(dev, "invalid reg: %u\n", id);
|
|
ret = -EINVAL;
|
|
goto put_child;
|
|
}
|
|
if (priv->phys[id].phy) {
|
|
dev_err(dev, "already registered port %u\n", id);
|
|
ret = -EINVAL;
|
|
goto put_child;
|
|
}
|
|
|
|
port = &priv->phys[id];
|
|
port->portnum = id;
|
|
port->phy_priv = priv;
|
|
port->phy = devm_phy_create(dev, child, &phy_ops);
|
|
port->rxaeq_mode = RXAEQ_MODE_OFF;
|
|
if (!of_property_read_string(child, "brcm,rxaeq-mode",
|
|
&rxaeq_mode))
|
|
port->rxaeq_mode = rxaeq_to_val(rxaeq_mode);
|
|
if (port->rxaeq_mode == RXAEQ_MODE_MANUAL)
|
|
of_property_read_u32(child, "brcm,rxaeq-value",
|
|
&port->rxaeq_val);
|
|
port->ssc_en = of_property_read_bool(child, "brcm,enable-ssc");
|
|
if (IS_ERR(port->phy)) {
|
|
dev_err(dev, "failed to create PHY\n");
|
|
ret = PTR_ERR(port->phy);
|
|
goto put_child;
|
|
}
|
|
|
|
phy_set_drvdata(port->phy, port);
|
|
count++;
|
|
}
|
|
|
|
provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
|
|
if (IS_ERR(provider)) {
|
|
dev_err(dev, "could not register PHY provider\n");
|
|
return PTR_ERR(provider);
|
|
}
|
|
|
|
dev_info(dev, "registered %d port(s)\n", count);
|
|
|
|
return 0;
|
|
put_child:
|
|
of_node_put(child);
|
|
return ret;
|
|
}
|
|
|
|
static struct platform_driver brcm_sata_phy_driver = {
|
|
.probe = brcm_sata_phy_probe,
|
|
.driver = {
|
|
.of_match_table = brcm_sata_phy_of_match,
|
|
.name = "brcm-sata-phy",
|
|
}
|
|
};
|
|
module_platform_driver(brcm_sata_phy_driver);
|
|
|
|
MODULE_DESCRIPTION("Broadcom SATA PHY driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Marc Carino");
|
|
MODULE_AUTHOR("Brian Norris");
|
|
MODULE_ALIAS("platform:phy-brcm-sata");
|