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Date: Fri, 3 Mar 2023 15:06:34 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
Praveenkumar I <ipkumar@...eaurora.org>,
<linux-arm-msm@...r.kernel.org>, <linux-phy@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/8] phy: qcom: qmp: Update IPQ9574 USB Phy initialization
Sequence
On 3/2/2023 9:46 PM, Dmitry Baryshkov wrote:
> On Thu, 2 Mar 2023 at 11:57, Varadarajan Narayanan
> <quic_varada@...cinc.com> 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 <ipkumar@...eaurora.org>
>> Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
>> ---
>> drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 130 ++++++++++++++++++++++++++++++++
>> 1 file changed, 130 insertions(+)
>>
>> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
>> index a49711c..a44c15b 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
>> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
>> @@ -91,9 +91,15 @@ enum qphy_reg_layout {
>> /* PCS registers */
>> QPHY_SW_RESET,
>> QPHY_START_CTRL,
>> + QPHY_FLL_CNTRL1,
>> + QPHY_FLL_CNTRL2,
>> + QPHY_FLL_CNT_VAL_L,
>> + QPHY_FLL_CNT_VAL_H_TOL,
>> + QPHY_FLL_MAN_CODE,
> You don't seem to be using indirect register addressing for these
> registers, so these bits are unused and can be dropped.
>
>> 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 +145,103 @@ 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_FLL_CNTRL1] = 0xc0,
>> + [QPHY_FLL_CNTRL2] = 0xc4,
>> + [QPHY_FLL_CNT_VAL_L] = 0xc8,
>> + [QPHY_FLL_CNT_VAL_H_TOL] = 0xcc,
>> + [QPHY_FLL_MAN_CODE] = 0xd0,
>> + [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_LFPS_RXTERM_IRQ_STATUS] = 0x178,
>> + [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),
>> + 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),
>> @@ -1558,6 +1661,10 @@ static const char * const qmp_phy_vreg_l[] = {
>> "vdda-phy", "vdda-pll",
>> };
>>
>> +static const char * const ipq9574_phy_clk_l[] = {
> Please move clocks to the clocks section.
>
>> + "aux", "cfg_ahb",
>> +};
>> +
>> static const struct qmp_usb_offsets qmp_usb_offsets_v5 = {
>> .serdes = 0,
>> .pcs = 0x0200,
>> @@ -1939,6 +2046,26 @@ static const struct qmp_phy_cfg qcm2290_usb3phy_cfg = {
>> .regs = qmp_v3_usb3phy_regs_layout,
>> };
>>
>> +static const struct qmp_phy_cfg ipq9574_usb3phy_cfg = {
> Please keep the data sorted.
>
>> + .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,
>> +};
> You will get an undefined symbol error here.
>
>> +
>> static void qmp_usb_configure_lane(void __iomem *base,
>> const struct qmp_phy_init_tbl tbl[],
>> int num,
>> @@ -2607,6 +2734,9 @@ static const struct of_device_id qmp_usb_of_match_table[] = {
>> .compatible = "qcom,sc8280xp-qmp-usb3-uni-phy",
>> .data = &sc8280xp_usb3_uniphy_cfg,
>> }, {
>> + .compatible = "qcom,ipq9574-qmp-usb3-phy",
>> + .data = &ipq9574_usb3phy_cfg,
>> + }, {
> Please choose a less random place for your driver data. The match
> table is sorted, please keep it this way.
>
>> .compatible = "qcom,sdm845-qmp-usb3-phy",
>> .data = &qmp_v3_usb3phy_cfg,
>> }, {
>> --
>> 2.7.4
Thanks for the feedback. Will make the corrections and post a revised patch.
Thanks
Varada
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