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path: root/drivers/phy/qualcomm/phy-qcom-qmp.c
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Diffstat (limited to 'drivers/phy/qualcomm/phy-qcom-qmp.c')
-rw-r--r--drivers/phy/qualcomm/phy-qcom-qmp.c222
1 files changed, 201 insertions, 21 deletions
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index 4c470104a0d6..a83332411026 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -156,6 +156,11 @@ static const unsigned int qmp_v3_usb3phy_regs_layout[] = {
[QPHY_PCS_LFPS_RXTERM_IRQ_STATUS] = 0x170,
};
+static const unsigned int sdm845_ufsphy_regs_layout[] = {
+ [QPHY_START_CTRL] = 0x00,
+ [QPHY_PCS_READY_STATUS] = 0x160,
+};
+
static const struct qmp_phy_init_tbl msm8996_pcie_serdes_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x1c),
QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10),
@@ -601,6 +606,83 @@ static const struct qmp_phy_init_tbl qmp_v3_usb3_uniphy_pcs_tbl[] = {
QMP_PHY_INIT_CFG(QPHY_V3_PCS_REFGEN_REQ_CONFIG2, 0x60),
};
+static const struct qmp_phy_init_tbl sdm845_ufsphy_serdes_tbl[] = {
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYS_CLK_CTRL, 0x02),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_BIAS_EN_CLKBUFLR_EN, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_BG_TIMER, 0x0a),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_IVCO, 0x07),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_CMN_CONFIG, 0x06),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYSCLK_EN_SEL, 0xd5),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_RESETSM_CNTRL, 0x20),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_CLK_SELECT, 0x30),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_HSCLK_SEL, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP_EN, 0x01),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_CTRL, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_CORE_CLK_EN, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_MAP, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_SVS_MODE_CLK_SEL, 0x05),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_INITVAL1, 0xff),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_INITVAL2, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_DEC_START_MODE0, 0x82),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_CP_CTRL_MODE0, 0x06),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_RCTRL_MODE0, 0x16),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_CCTRL_MODE0, 0x36),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE0, 0x3f),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE0, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE1_MODE0, 0xda),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE2_MODE0, 0x01),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP1_MODE0, 0xff),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP2_MODE0, 0x0c),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_DEC_START_MODE1, 0x98),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_CP_CTRL_MODE1, 0x06),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_RCTRL_MODE1, 0x16),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_CCTRL_MODE1, 0x36),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE1, 0x3f),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE1, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE1_MODE1, 0xc1),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE2_MODE1, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP1_MODE1, 0x32),
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP2_MODE1, 0x0f),
+
+ /* Rate B */
+ QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_MAP, 0x44),
+};
+
+static const struct qmp_phy_init_tbl sdm845_ufsphy_tx_tbl[] = {
+ QMP_PHY_INIT_CFG(QSERDES_V3_TX_LANE_MODE_1, 0x06),
+ QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_TX, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_RX, 0x07),
+};
+
+static const struct qmp_phy_init_tbl sdm845_ufsphy_rx_tbl[] = {
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_LVL, 0x24),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_CNTRL, 0x0f),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_DEGLITCH_CNTRL, 0x1e),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_INTERFACE_MODE, 0x40),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FASTLOCK_FO_GAIN, 0x0b),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_TERM_BW, 0x5b),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL2, 0x06),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL3, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL4, 0x1b),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SVS_SO_GAIN_HALF, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SVS_SO_GAIN_QUARTER, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SVS_SO_GAIN, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x4b),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_PI_CONTROLS, 0x81),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FASTLOCK_COUNT_LOW, 0x80),
+ QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_MODE_00, 0x59),
+};
+
+static const struct qmp_phy_init_tbl sdm845_ufsphy_pcs_tbl[] = {
+ QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SIGDET_CTRL2, 0x6e),
+ QMP_PHY_INIT_CFG(QPHY_V3_PCS_TX_LARGE_AMP_DRV_LVL, 0x0a),
+ QMP_PHY_INIT_CFG(QPHY_V3_PCS_TX_SMALL_AMP_DRV_LVL, 0x02),
+ QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SYM_RESYNC_CTRL, 0x03),
+ QMP_PHY_INIT_CFG(QPHY_V3_PCS_TX_MID_TERM_CTRL1, 0x43),
+ QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SIGDET_CTRL1, 0x0f),
+ QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_MIN_HIBERN8_TIME, 0x9a),
+ QMP_PHY_INIT_CFG(QPHY_V3_PCS_MULTI_LANE_CTRL1, 0x02),
+};
/* struct qmp_phy_cfg - per-PHY initialization config */
struct qmp_phy_cfg {
@@ -649,9 +731,14 @@ struct qmp_phy_cfg {
/* true, if PHY has a separate DP_COM control block */
bool has_phy_dp_com_ctrl;
+ /* true, if PHY has secondary tx/rx lanes to be configured */
+ bool is_dual_lane_phy;
/* Register offset of secondary tx/rx lanes for USB DP combo PHY */
unsigned int tx_b_lane_offset;
unsigned int rx_b_lane_offset;
+
+ /* true, if PCS block has no separate SW_RESET register */
+ bool no_pcs_sw_reset;
};
/**
@@ -748,6 +835,10 @@ static const char * const qmp_v3_phy_clk_l[] = {
"aux", "cfg_ahb", "ref", "com_aux",
};
+static const char * const sdm845_ufs_phy_clk_l[] = {
+ "ref", "ref_aux",
+};
+
/* list of resets */
static const char * const msm8996_pciephy_reset_l[] = {
"phy", "common", "cfg",
@@ -758,7 +849,7 @@ static const char * const msm8996_usb3phy_reset_l[] = {
};
/* list of regulators */
-static const char * const msm8996_phy_vreg_l[] = {
+static const char * const qmp_phy_vreg_l[] = {
"vdda-phy", "vdda-pll",
};
@@ -778,8 +869,8 @@ static const struct qmp_phy_cfg msm8996_pciephy_cfg = {
.num_clks = ARRAY_SIZE(msm8996_phy_clk_l),
.reset_list = msm8996_pciephy_reset_l,
.num_resets = ARRAY_SIZE(msm8996_pciephy_reset_l),
- .vreg_list = msm8996_phy_vreg_l,
- .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l),
+ .vreg_list = qmp_phy_vreg_l,
+ .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
.regs = pciephy_regs_layout,
.start_ctrl = PCS_START | PLL_READY_GATE_EN,
@@ -809,8 +900,8 @@ static const struct qmp_phy_cfg msm8996_usb3phy_cfg = {
.num_clks = ARRAY_SIZE(msm8996_phy_clk_l),
.reset_list = msm8996_usb3phy_reset_l,
.num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l),
- .vreg_list = msm8996_phy_vreg_l,
- .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l),
+ .vreg_list = qmp_phy_vreg_l,
+ .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
.regs = usb3phy_regs_layout,
.start_ctrl = SERDES_START | PCS_START,
@@ -870,8 +961,8 @@ static const struct qmp_phy_cfg qmp_v3_usb3phy_cfg = {
.num_clks = ARRAY_SIZE(qmp_v3_phy_clk_l),
.reset_list = msm8996_usb3phy_reset_l,
.num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l),
- .vreg_list = msm8996_phy_vreg_l,
- .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l),
+ .vreg_list = qmp_phy_vreg_l,
+ .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
.regs = qmp_v3_usb3phy_regs_layout,
.start_ctrl = SERDES_START | PCS_START,
@@ -883,6 +974,7 @@ static const struct qmp_phy_cfg qmp_v3_usb3phy_cfg = {
.pwrdn_delay_max = POWER_DOWN_DELAY_US_MAX,
.has_phy_dp_com_ctrl = true,
+ .is_dual_lane_phy = true,
.tx_b_lane_offset = 0x400,
.rx_b_lane_offset = 0x400,
};
@@ -903,8 +995,8 @@ static const struct qmp_phy_cfg qmp_v3_usb3_uniphy_cfg = {
.num_clks = ARRAY_SIZE(qmp_v3_phy_clk_l),
.reset_list = msm8996_usb3phy_reset_l,
.num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l),
- .vreg_list = msm8996_phy_vreg_l,
- .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l),
+ .vreg_list = qmp_phy_vreg_l,
+ .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
.regs = qmp_v3_usb3phy_regs_layout,
.start_ctrl = SERDES_START | PCS_START,
@@ -916,6 +1008,35 @@ static const struct qmp_phy_cfg qmp_v3_usb3_uniphy_cfg = {
.pwrdn_delay_max = POWER_DOWN_DELAY_US_MAX,
};
+static const struct qmp_phy_cfg sdm845_ufsphy_cfg = {
+ .type = PHY_TYPE_UFS,
+ .nlanes = 2,
+
+ .serdes_tbl = sdm845_ufsphy_serdes_tbl,
+ .serdes_tbl_num = ARRAY_SIZE(sdm845_ufsphy_serdes_tbl),
+ .tx_tbl = sdm845_ufsphy_tx_tbl,
+ .tx_tbl_num = ARRAY_SIZE(sdm845_ufsphy_tx_tbl),
+ .rx_tbl = sdm845_ufsphy_rx_tbl,
+ .rx_tbl_num = ARRAY_SIZE(sdm845_ufsphy_rx_tbl),
+ .pcs_tbl = sdm845_ufsphy_pcs_tbl,
+ .pcs_tbl_num = ARRAY_SIZE(sdm845_ufsphy_pcs_tbl),
+ .clk_list = sdm845_ufs_phy_clk_l,
+ .num_clks = ARRAY_SIZE(sdm845_ufs_phy_clk_l),
+ .vreg_list = qmp_phy_vreg_l,
+ .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
+ .regs = sdm845_ufsphy_regs_layout,
+
+ .start_ctrl = SERDES_START,
+ .pwrdn_ctrl = SW_PWRDN,
+ .mask_pcs_ready = PCS_READY,
+
+ .is_dual_lane_phy = true,
+ .tx_b_lane_offset = 0x400,
+ .rx_b_lane_offset = 0x400,
+
+ .no_pcs_sw_reset = true,
+};
+
static void qcom_qmp_phy_configure(void __iomem *base,
const unsigned int *regs,
const struct qmp_phy_init_tbl tbl[],
@@ -935,10 +1056,12 @@ static void qcom_qmp_phy_configure(void __iomem *base,
}
}
-static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp)
+static int qcom_qmp_phy_com_init(struct qmp_phy *qphy)
{
+ struct qcom_qmp *qmp = qphy->qmp;
const struct qmp_phy_cfg *cfg = qmp->cfg;
void __iomem *serdes = qmp->serdes;
+ void __iomem *pcs = qphy->pcs;
void __iomem *dp_com = qmp->dp_com;
int ret, i;
@@ -979,10 +1102,6 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp)
goto err_rst;
}
- if (cfg->has_phy_com_ctrl)
- qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
- SW_PWRDN);
-
if (cfg->has_phy_dp_com_ctrl) {
qphy_setbits(dp_com, QPHY_V3_DP_COM_POWER_DOWN_CTRL,
SW_PWRDN);
@@ -1000,6 +1119,12 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp)
SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET);
}
+ if (cfg->has_phy_com_ctrl)
+ qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
+ SW_PWRDN);
+ else
+ qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
+
/* Serdes configuration */
qcom_qmp_phy_configure(serdes, cfg->regs, cfg->serdes_tbl,
cfg->serdes_tbl_num);
@@ -1090,7 +1215,7 @@ static int qcom_qmp_phy_init(struct phy *phy)
dev_vdbg(qmp->dev, "Initializing QMP phy\n");
- ret = qcom_qmp_phy_com_init(qmp);
+ ret = qcom_qmp_phy_com_init(qphy);
if (ret)
return ret;
@@ -1112,22 +1237,31 @@ static int qcom_qmp_phy_init(struct phy *phy)
/* Tx, Rx, and PCS configurations */
qcom_qmp_phy_configure(tx, cfg->regs, cfg->tx_tbl, cfg->tx_tbl_num);
/* Configuration for other LANE for USB-DP combo PHY */
- if (cfg->has_phy_dp_com_ctrl)
+ if (cfg->is_dual_lane_phy)
qcom_qmp_phy_configure(tx + cfg->tx_b_lane_offset, cfg->regs,
cfg->tx_tbl, cfg->tx_tbl_num);
qcom_qmp_phy_configure(rx, cfg->regs, cfg->rx_tbl, cfg->rx_tbl_num);
- if (cfg->has_phy_dp_com_ctrl)
+ if (cfg->is_dual_lane_phy)
qcom_qmp_phy_configure(rx + cfg->rx_b_lane_offset, cfg->regs,
cfg->rx_tbl, cfg->rx_tbl_num);
qcom_qmp_phy_configure(pcs, cfg->regs, cfg->pcs_tbl, cfg->pcs_tbl_num);
/*
+ * UFS PHY requires the deassert of software reset before serdes start.
+ * For UFS PHYs that do not have software reset control bits, defer
+ * starting serdes until the power on callback.
+ */
+ if ((cfg->type == PHY_TYPE_UFS) && cfg->no_pcs_sw_reset)
+ goto out;
+
+ /*
* Pull out PHY from POWER DOWN state.
* This is active low enable signal to power-down PHY.
*/
- qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
+ if(cfg->type == PHY_TYPE_PCIE)
+ qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
if (cfg->has_pwrdn_delay)
usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max);
@@ -1151,6 +1285,7 @@ static int qcom_qmp_phy_init(struct phy *phy)
}
qmp->phy_initialized = true;
+out:
return ret;
err_pcs_ready:
@@ -1173,7 +1308,8 @@ static int qcom_qmp_phy_exit(struct phy *phy)
clk_disable_unprepare(qphy->pipe_clk);
/* PHY reset */
- qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
+ if (!cfg->no_pcs_sw_reset)
+ qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
/* stop SerDes and Phy-Coding-Sublayer */
qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl);
@@ -1191,6 +1327,44 @@ static int qcom_qmp_phy_exit(struct phy *phy)
return 0;
}
+static int qcom_qmp_phy_poweron(struct phy *phy)
+{
+ struct qmp_phy *qphy = phy_get_drvdata(phy);
+ struct qcom_qmp *qmp = qphy->qmp;
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ void __iomem *pcs = qphy->pcs;
+ void __iomem *status;
+ unsigned int mask, val;
+ int ret = 0;
+
+ if (cfg->type != PHY_TYPE_UFS)
+ return 0;
+
+ /*
+ * For UFS PHY that has not software reset control, serdes start
+ * should only happen when UFS driver explicitly calls phy_power_on
+ * after it deasserts software reset.
+ */
+ if (cfg->no_pcs_sw_reset && !qmp->phy_initialized &&
+ (qmp->init_count != 0)) {
+ /* start SerDes and Phy-Coding-Sublayer */
+ qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl);
+
+ status = pcs + cfg->regs[QPHY_PCS_READY_STATUS];
+ mask = cfg->mask_pcs_ready;
+
+ ret = readl_poll_timeout(status, val, !(val & mask), 1,
+ PHY_INIT_COMPLETE_TIMEOUT);
+ if (ret) {
+ dev_err(qmp->dev, "phy initialization timed-out\n");
+ return ret;
+ }
+ qmp->phy_initialized = true;
+ }
+
+ return ret;
+}
+
static int qcom_qmp_phy_set_mode(struct phy *phy, enum phy_mode mode)
{
struct qmp_phy *qphy = phy_get_drvdata(phy);
@@ -1400,7 +1574,7 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
ret = of_property_read_string(np, "clock-output-names", &init.name);
if (ret) {
- dev_err(qmp->dev, "%s: No clock-output-names\n", np->name);
+ dev_err(qmp->dev, "%pOFn: No clock-output-names\n", np);
return ret;
}
@@ -1420,6 +1594,7 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
static const struct phy_ops qcom_qmp_phy_gen_ops = {
.init = qcom_qmp_phy_init,
.exit = qcom_qmp_phy_exit,
+ .power_on = qcom_qmp_phy_poweron,
.set_mode = qcom_qmp_phy_set_mode,
.owner = THIS_MODULE,
};
@@ -1522,6 +1697,9 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = {
}, {
.compatible = "qcom,sdm845-qmp-usb3-uni-phy",
.data = &qmp_v3_usb3_uniphy_cfg,
+ }, {
+ .compatible = "qcom,sdm845-qmp-ufs-phy",
+ .data = &sdm845_ufsphy_cfg,
},
{ },
};
@@ -1586,7 +1764,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
ret = qcom_qmp_phy_vreg_init(dev);
if (ret) {
- dev_err(dev, "failed to get regulator supplies\n");
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "failed to get regulator supplies: %d\n",
+ ret);
return ret;
}