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ANDROID: phy: qcom: qmp: Add SDM845 PCIe QMP PHY support
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qcom_qmp_phy_init() is extended to support the additional register
writes needed in PCS MISC and the appropriate sequences and resources
are defined for the GEN2 PCIe QMP PHY found in SDM845.

Bug: 146449535
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
(cherry picked from commit ea22de53ffeb5c9a8b725b471e8ed4935ac3aaf5
https://git.linaro.org/landing-teams/working/qualcomm/kernel.git
qclt/integration-linux-qcomlt  - An unstable rebased branch)
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: Ia763ff19382898dcbecf538cf001a7402ad7a934
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@andersson @adelva1984
andersson authored and adelva1984 committed Dec 20, 2019
1 parent 10de101 commit fdd437c
Showing 1 changed file with 156 additions and 0 deletions.
156 changes: 156 additions & 0 deletions drivers/phy/qualcomm/phy-qcom-qmp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -160,6 +160,12 @@ static const unsigned int qmp_v3_usb3phy_regs_layout[] = {
[QPHY_PCS_LFPS_RXTERM_IRQ_STATUS] = 0x170,
};

static const unsigned int sdm845_qmp_pciephy_regs_layout[] = {
[QPHY_SW_RESET] = 0x00,
[QPHY_START_CTRL] = 0x08,
[QPHY_PCS_STATUS] = 0x174,
};

static const unsigned int sdm845_ufsphy_regs_layout[] = {
[QPHY_START_CTRL] = 0x00,
[QPHY_PCS_READY_STATUS] = 0x160,
Expand Down Expand Up @@ -475,6 +481,109 @@ static const struct qmp_phy_init_tbl ipq8074_pcie_pcs_tbl[] = {
QMP_PHY_INIT_CFG_L(QPHY_START_CTRL, 0x3),
};

static const struct qmp_phy_init_tbl sdm845_qmp_pcie_serdes_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_V3_COM_BIAS_EN_CLKBUFLR_EN, 0x14),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_CLK_SELECT, 0x30),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_IVCO, 0x007),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_CMN_CONFIG, 0x06),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP_EN, 0x01),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_RESETSM_CNTRL, 0x20),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_MAP, 0x00),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE2_MODE0, 0x01),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE1_MODE0, 0xc9),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_TIMER1, 0xff),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_TIMER2, 0x3f),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SVS_MODE_CLK_SEL, 0x01),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_CORE_CLK_EN, 0x00),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_CORECLK_DIV_MODE0, 0x0a),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_CLK_EP_DIV, 0x19),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_CLK_ENABLE1, 0x90),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_DEC_START_MODE0, 0x82),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START3_MODE0, 0x02),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START2_MODE0, 0xea),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_DIV_FRAC_START1_MODE0, 0xab),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP3_MODE0, 0x00),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP2_MODE0, 0x0d),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_LOCK_CMP1_MODE0, 0x04),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_HSCLK_SEL, 0x00),
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_CMN_MODE, 0x01),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_CLK_SELECT, 0x33),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYS_CLK_CTRL, 0x02),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYSCLK_BUF_ENABLE, 0x06),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYSCLK_EN_SEL, 0x04),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN1_MODE0, 0x00),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_INTEGLOOP_GAIN0_MODE0, 0x3f),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_BG_TIMER, 0x09),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_EN_CENTER, 0x01),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_PER1, 0x40),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_PER2, 0x01),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_ADJ_PER1, 0x02),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_ADJ_PER2, 0x00),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_STEP_SIZE1, 0x7e),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SSC_STEP_SIZE2, 0x15),
};

static const struct qmp_phy_init_tbl sdm845_qmp_pcie_tx_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_V3_TX_RES_CODE_LANE_OFFSET_TX, 0x02),
QMP_PHY_INIT_CFG(QSERDES_V3_TX_RCV_DETECT_LVL_2, 0x12),
QMP_PHY_INIT_CFG(QSERDES_V3_TX_HIGHZ_DRVR_EN, 0x10),
QMP_PHY_INIT_CFG(QSERDES_V3_TX_LANE_MODE_1, 0x06),
};

static const struct qmp_phy_init_tbl sdm845_qmp_pcie_rx_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_CNTRL, 0x03),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_ENABLES, 0x10),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_SIGDET_DEGLITCH_CNTRL, 0x14),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL2, 0x0e),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL3, 0x04),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQU_ADAPTOR_CNTRL4, 0x1a),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x4b),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SO_GAIN, 0x04),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_SO_GAIN_HALF, 0x04),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x71),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_MODE_00, 0x59),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_MODE_01, 0x59),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x80),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_RX_INTERFACE_MODE, 0x40),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_PI_CONTROLS, 0x71),
QMP_PHY_INIT_CFG(QSERDES_V3_RX_UCDR_FASTLOCK_COUNT_LOW, 0x40),
};

static const struct qmp_phy_init_tbl sdm845_qmp_pcie_pcs_tbl[] = {
QMP_PHY_INIT_CFG(QPHY_V3_PCS_ENDPOINT_REFCLK_DRIVE, 0x04),

QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL2, 0x83),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNT_VAL_L, 0x09),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNT_VAL_H_TOL, 0xa2),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_MAN_CODE, 0x40),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL1, 0x02),

QMP_PHY_INIT_CFG(QPHY_V3_PCS_OSC_DTCT_ACTIONS, 0x00),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK, 0x01),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_L1SS_WAKEUP_DLY_TIME_AUXCLK_MSB, 0x00),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_L1SS_WAKEUP_DLY_TIME_AUXCLK_LSB, 0x20),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_LP_WAKEUP_DLY_TIME_AUXCLK_MSB, 0x00),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_LP_WAKEUP_DLY_TIME_AUXCLK, 0x01),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_PLL_LOCK_CHK_DLY_TIME, 0x73),

QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SIGDET_LVL, 0xbb),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_SIGDET_CNTRL, 0x03),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_REFGEN_REQ_CONFIG1, 0x0d),

QMP_PHY_INIT_CFG(QPHY_V3_PCS_POWER_STATE_CONFIG4, 0x00),
};

static const struct qmp_phy_init_tbl sdm845_qmp_pcie_pcs_misc_tbl[] = {
QMP_PHY_INIT_CFG(QPHY_V3_PCS_MISC_OSC_DTCT_CONFIG2, 0x52),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_MISC_OSC_DTCT_MODE2_CONFIG2, 0x10),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_MISC_OSC_DTCT_MODE2_CONFIG4, 0x1a),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_MISC_OSC_DTCT_MODE2_CONFIG5, 0x06),
QMP_PHY_INIT_CFG(QPHY_V3_PCS_MISC_PCIE_INT_AUX_CLK_CONFIG1, 0x00),
};

static const struct qmp_phy_init_tbl qmp_v3_usb3_serdes_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_V3_COM_PLL_IVCO, 0x07),
QMP_PHY_INIT_CFG(QSERDES_V3_COM_SYSCLK_EN_SEL, 0x14),
Expand Down Expand Up @@ -896,6 +1005,8 @@ struct qmp_phy_cfg {
int rx_tbl_num;
const struct qmp_phy_init_tbl *pcs_tbl;
int pcs_tbl_num;
const struct qmp_phy_init_tbl *pcs_misc_tbl;
int pcs_misc_tbl_num;

/* clock ids to be requested */
const char * const *clk_list;
Expand Down Expand Up @@ -1034,6 +1145,10 @@ static const char * const qmp_v3_phy_clk_l[] = {
"aux", "cfg_ahb", "ref", "com_aux",
};

static const char * const sdm845_pciephy_clk_l[] = {
"aux", "cfg_ahb", "ref", "refgen",
};

static const char * const sdm845_ufs_phy_clk_l[] = {
"ref", "ref_aux",
};
Expand All @@ -1047,6 +1162,10 @@ static const char * const msm8996_usb3phy_reset_l[] = {
"phy", "common",
};

static const char * const sdm845_pciephy_reset_l[] = {
"phy",
};

/* list of regulators */
static const char * const qmp_phy_vreg_l[] = {
"vdda-phy", "vdda-pll",
Expand Down Expand Up @@ -1142,6 +1261,36 @@ static const struct qmp_phy_cfg ipq8074_pciephy_cfg = {
.pwrdn_delay_max = 1005, /* us */
};

static const struct qmp_phy_cfg sdm845_qmp_pciephy_cfg = {
.type = PHY_TYPE_PCIE,
.nlanes = 1,

.serdes_tbl = sdm845_qmp_pcie_serdes_tbl,
.serdes_tbl_num = ARRAY_SIZE(sdm845_qmp_pcie_serdes_tbl),
.tx_tbl = sdm845_qmp_pcie_tx_tbl,
.tx_tbl_num = ARRAY_SIZE(sdm845_qmp_pcie_tx_tbl),
.rx_tbl = sdm845_qmp_pcie_rx_tbl,
.rx_tbl_num = ARRAY_SIZE(sdm845_qmp_pcie_rx_tbl),
.pcs_tbl = sdm845_qmp_pcie_pcs_tbl,
.pcs_tbl_num = ARRAY_SIZE(sdm845_qmp_pcie_pcs_tbl),
.pcs_misc_tbl = sdm845_qmp_pcie_pcs_misc_tbl,
.pcs_misc_tbl_num = ARRAY_SIZE(sdm845_qmp_pcie_pcs_misc_tbl),
.clk_list = sdm845_pciephy_clk_l,
.num_clks = ARRAY_SIZE(sdm845_pciephy_clk_l),
.reset_list = sdm845_pciephy_reset_l,
.num_resets = ARRAY_SIZE(sdm845_pciephy_reset_l),
.vreg_list = qmp_phy_vreg_l,
.num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
.regs = sdm845_qmp_pciephy_regs_layout,

.start_ctrl = PCS_START | SERDES_START,
.pwrdn_ctrl = SW_PWRDN | REFCLK_DRV_DSBL,

.has_pwrdn_delay = true,
.pwrdn_delay_min = 995, /* us */
.pwrdn_delay_max = 1005, /* us */
};

static const struct qmp_phy_cfg qmp_v3_usb3phy_cfg = {
.type = PHY_TYPE_USB3,
.nlanes = 1,
Expand Down Expand Up @@ -1447,6 +1596,7 @@ static int qcom_qmp_phy_enable(struct phy *phy)
void __iomem *tx = qphy->tx;
void __iomem *rx = qphy->rx;
void __iomem *pcs = qphy->pcs;
void __iomem *pcs_misc = qphy->pcs_misc;
void __iomem *dp_com = qmp->dp_com;
void __iomem *status;
unsigned int mask, val, ready;
Expand Down Expand Up @@ -1517,6 +1667,9 @@ static int qcom_qmp_phy_enable(struct phy *phy)
if (ret)
goto err_lane_rst;

qcom_qmp_phy_configure(pcs_misc, cfg->regs, cfg->pcs_misc_tbl,
cfg->pcs_misc_tbl_num);

/*
* Pull out PHY from POWER DOWN state.
* This is active low enable signal to power-down PHY.
Expand Down Expand Up @@ -1986,6 +2139,9 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = {
}, {
.compatible = "qcom,ipq8074-qmp-pcie-phy",
.data = &ipq8074_pciephy_cfg,
}, {
.compatible = "qcom,sdm845-qmp-pcie-phy",
.data = &sdm845_qmp_pciephy_cfg,
}, {
.compatible = "qcom,sdm845-qmp-usb3-phy",
.data = &qmp_v3_usb3phy_cfg,
Expand Down

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