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Message-ID: <20230322061449.GB12808@varda-linux.qualcomm.com>
Date: Wed, 22 Mar 2023 11:44:50 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: Konrad Dybcio <konrad.dybcio@...aro.org>
CC: <agross@...nel.org>, <andersson@...nel.org>, <vkoul@...nel.org>,
<kishon@...nel.org>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <gregkh@...uxfoundation.org>,
<mturquette@...libre.com>, <sboyd@...nel.org>,
<quic_wcheng@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
<linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
<linux-clk@...r.kernel.org>,
Praveenkumar I <quic_ipkumar@...cinc.com>
Subject: Re: [PATCH v2 6/8] phy: qcom: qmp: Update IPQ9574 USB Phy
initialization Sequence
On Tue, Mar 21, 2023 at 01:07:02PM +0100, Konrad Dybcio wrote:
>
>
> On 21.03.2023 09:54, Varadarajan Narayanan wrote:
> > Updated USB QMP PHY Init sequence based on HPG for IPQ9574.
> > Reused clock and reset list from existing targets.
> >
> > Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> > Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> >
> > ---
> > Changes in v2:
> > - Removed unused phy register offsets
> > - Moved the clock entries to the correct place
> > - Maintain sorted order
> > ---
> > drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 119 ++++++++++++++++++++++++++++++++
> > 1 file changed, 119 insertions(+)
> >
> > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
> > index a49711c..51894b9 100644
> > --- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
> > +++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
> > @@ -94,6 +94,7 @@ enum qphy_reg_layout {
> > QPHY_PCS_STATUS,
> > QPHY_PCS_AUTONOMOUS_MODE_CTRL,
> > QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR,
> > + QPHY_PCS_LFPS_RXTERM_IRQ_STATUS,
> > QPHY_PCS_POWER_DOWN_CONTROL,
> > /* Keep last to ensure regs_layout arrays are properly initialized */
> > QPHY_LAYOUT_SIZE
> > @@ -139,6 +140,97 @@ static const unsigned int qmp_v5_usb3phy_regs_layout[QPHY_LAYOUT_SIZE] = {
> > [QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR] = QPHY_V5_PCS_USB3_LFPS_RXTERM_IRQ_CLEAR,
> > };
> >
> > +static const unsigned int usb3phy_regs_layout[] = {
> > + [QPHY_SW_RESET] = 0x00,
> > + [QPHY_START_CTRL] = 0x08,
> > + [QPHY_PCS_STATUS] = 0x17c,
> > + [QPHY_PCS_AUTONOMOUS_MODE_CTRL] = 0x0d4,
> > + [QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR] = 0x0d8,
> > + [QPHY_PCS_POWER_DOWN_CONTROL] = 0x04,
> > +};
> > +
> > +static const struct qmp_phy_init_tbl ipq9574_usb3_serdes_tbl[] = {
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x1a),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x08),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x30),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0x0f),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0b),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SVS_MODE_CLK_SEL, 0x01),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x00),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x06),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0x0f),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SYS_CLK_CTRL, 0x06),
> > + /* PLL and Loop filter settings */
> > + QMP_PHY_INIT_CFG(QSERDES_COM_DEC_START_MODE0, 0x68),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START1_MODE0, 0xAB),
> Please be consistent with hex captitalization.
>
> Konrad
Will fix this.
Thanks
Varada
> > + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START2_MODE0, 0xAA),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x02),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_CP_CTRL_MODE0, 0x09),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_RCTRL_MODE0, 0x16),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_CCTRL_MODE0, 0x28),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0xA0),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP1_MODE0, 0xAA),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP2_MODE0, 0x29),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP3_MODE0, 0x00),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_CORE_CLK_EN, 0x00),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_CFG, 0x00),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x00),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_BG_TIMER, 0x0a),
> > + /* SSC settings */
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x01),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x7D),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x01),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER1, 0x00),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER2, 0x00),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0x0A),
> > + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x05),
> > +};
> > +
> > +static const struct qmp_phy_init_tbl ipq9574_usb3_tx_tbl[] = {
> > + QMP_PHY_INIT_CFG(QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN, 0x45),
> > + QMP_PHY_INIT_CFG(QSERDES_TX_RCV_DETECT_LVL_2, 0x12),
> > + QMP_PHY_INIT_CFG(QSERDES_TX_LANE_MODE, 0x06),
> > +};
> > +
> > +static const struct qmp_phy_init_tbl ipq9574_usb3_rx_tbl[] = {
> > + QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN, 0x06),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x02),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x6c),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4c),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0xb8),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x77),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x80),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_CNTRL, 0x03),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x16),
> > + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_ENABLES, 0x0c),
> > +};
> > +
> > +static const struct qmp_phy_init_tbl ipq9574_usb3_pcs_tbl[] = {
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V0, 0x15),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V0, 0x0e),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL2, 0x83),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_FLL_CNTRL1, 0x02),
> > + 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, 0x85),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG1, 0xd1),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG2, 0x1f),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LOCK_DETECT_CONFIG3, 0x47),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_POWER_STATE_CONFIG2, 0x1b),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RXEQTRAINING_WAIT_TIME, 0x75),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RXEQTRAINING_RUN_TIME, 0x13),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_LFPS_TX_ECSTART_EQTLOCK, 0x86),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_PWRUP_RESET_DLY_TIME_AUXCLK, 0x04),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TSYNC_RSYNC_TIME, 0x44),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_L, 0xe7),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_P1U2_H, 0x03),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_U3_L, 0x40),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RCVR_DTCT_DLY_U3_H, 0x00),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SIGDET_LVL, 0x88),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M6DB_V0, 0x17),
> > + QMP_PHY_INIT_CFG(QPHY_V3_PCS_TXDEEMPH_M3P5DB_V0, 0x0f),
> > +};
> > +
> > static const struct qmp_phy_init_tbl ipq8074_usb3_serdes_tbl[] = {
> > QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x1a),
> > QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x08),
> > @@ -1510,6 +1602,10 @@ static inline void qphy_clrbits(void __iomem *base, u32 offset, u32 val)
> > }
> >
> > /* list of clocks required by phy */
> > +static const char * const ipq9574_phy_clk_l[] = {
> > + "aux", "cfg_ahb",
> > +};
> > +
> > static const char * const msm8996_phy_clk_l[] = {
> > "aux", "cfg_ahb", "ref",
> > };
> > @@ -1586,6 +1682,26 @@ static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = {
> > .regs = qmp_v3_usb3phy_regs_layout,
> > };
> >
> > +static const struct qmp_phy_cfg ipq9574_usb3phy_cfg = {
> > + .lanes = 1,
> > +
> > + .serdes_tbl = ipq9574_usb3_serdes_tbl,
> > + .serdes_tbl_num = ARRAY_SIZE(ipq9574_usb3_serdes_tbl),
> > + .tx_tbl = ipq9574_usb3_tx_tbl,
> > + .tx_tbl_num = ARRAY_SIZE(ipq9574_usb3_tx_tbl),
> > + .rx_tbl = ipq9574_usb3_rx_tbl,
> > + .rx_tbl_num = ARRAY_SIZE(ipq9574_usb3_rx_tbl),
> > + .pcs_tbl = ipq9574_usb3_pcs_tbl,
> > + .pcs_tbl_num = ARRAY_SIZE(ipq9574_usb3_pcs_tbl),
> > + .clk_list = ipq9574_phy_clk_l,
> > + .num_clks = ARRAY_SIZE(ipq9574_phy_clk_l),
> > + .reset_list = msm8996_usb3phy_reset_l,
> > + .num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l),
> > + .vreg_list = qmp_phy_vreg_l,
> > + .num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
> > + .regs = usb3phy_regs_layout,
> > +};
> > +
> > static const struct qmp_phy_cfg msm8996_usb3phy_cfg = {
> > .lanes = 1,
> >
> > @@ -2589,6 +2705,9 @@ static const struct of_device_id qmp_usb_of_match_table[] = {
> > .compatible = "qcom,ipq8074-qmp-usb3-phy",
> > .data = &ipq8074_usb3phy_cfg,
> > }, {
> > + .compatible = "qcom,ipq9574-qmp-usb3-phy",
> > + .data = &ipq9574_usb3phy_cfg,
> > + }, {
> > .compatible = "qcom,msm8996-qmp-usb3-phy",
> > .data = &msm8996_usb3phy_cfg,
> > }, {
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