[PATCH 2/2] phy: qcom-qmp: add IPQ8074 PCIe Gen3 QMP PHY support
Vinod Koul
vkoul at kernel.org
Thu Jun 16 17:05:13 PDT 2022
On 31-05-22, 23:44, Robert Marko wrote:
> IPQ8074 has 2 different single lane PCIe PHY-s, one Gen2 and one Gen3.
> Gen2 one is already supported, so add the support for the Gen3 one.
> It uses the same register layout as IPQ6018.
This needs rebase on split up phy driver.
>
> Signed-off-by: Robert Marko <robimarko at gmail.com>
> ---
> drivers/phy/qualcomm/phy-qcom-qmp.c | 173 +++++++++++++++++++++++++++-
> 1 file changed, 171 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
> index b144ae1f729a..7a12c5a92c48 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
> @@ -824,6 +824,133 @@ 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 ipq8074_pcie_gen3_serdes_tbl[] = {
> + QMP_PHY_INIT_CFG(QSERDES_PLL_BIAS_EN_CLKBUFLR_EN, 0x18),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_BIAS_EN_CTRL_BY_PSM, 0x01),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CLK_SELECT, 0x31),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_PLL_IVCO, 0x0f),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_BG_TRIM, 0x0f),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CMN_CONFIG, 0x06),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_LOCK_CMP_EN, 0x42),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_RESETSM_CNTRL, 0x20),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_SVS_MODE_CLK_SEL, 0x01),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_VCO_TUNE_MAP, 0x04),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_SVS_MODE_CLK_SEL, 0x05),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_VCO_TUNE_TIMER1, 0xff),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_VCO_TUNE_TIMER2, 0x3f),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CORE_CLK_EN, 0x30),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_HSCLK_SEL, 0x21),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_DEC_START_MODE0, 0x82),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_DIV_FRAC_START3_MODE0, 0x03),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_DIV_FRAC_START2_MODE0, 0x355),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_DIV_FRAC_START1_MODE0, 0x35555),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_LOCK_CMP2_MODE0, 0x1a),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_LOCK_CMP1_MODE0, 0x1a0a),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CP_CTRL_MODE0, 0xb),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_PLL_RCTRL_MODE0, 0x16),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_PLL_CCTRL_MODE0, 0x28),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_INTEGLOOP_GAIN1_MODE0, 0x0),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_INTEGLOOP_GAIN0_MODE0, 0x40),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_VCO_TUNE2_MODE0, 0x02),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_VCO_TUNE1_MODE0, 0x24),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_SVS_MODE_CLK_SEL, 0x05),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CORE_CLK_EN, 0x20),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CORECLK_DIV, 0xa),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CLK_SELECT, 0x32),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_SYS_CLK_CTRL, 0x02),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_SYSCLK_BUF_ENABLE, 0x07),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_SYSCLK_EN_SEL, 0x08),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_BG_TIMER, 0xa),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_HSCLK_SEL, 0x1),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_DEC_START_MODE1, 0x68),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_DIV_FRAC_START3_MODE1, 0x2),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_DIV_FRAC_START2_MODE1, 0x2aa),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_DIV_FRAC_START1_MODE1, 0x2aaab),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CLK_ENABLE1, 0x90),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_LOCK_CMP2_MODE1, 0x34),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_LOCK_CMP1_MODE1, 0x3414),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CP_CTRL_MODE1, 0x0b),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_PLL_RCTRL_MODE1, 0x16),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_PLL_CCTRL_MODE1, 0x28),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_INTEGLOOP_GAIN1_MODE1, 0x0),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_INTEGLOOP_GAIN0_MODE1, 0x40),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_VCO_TUNE2_MODE1, 0x03),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_VCO_TUNE1_MODE1, 0xb4),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_SVS_MODE_CLK_SEL, 0x05),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CORE_CLK_EN, 0x0),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CORECLK_DIV_MODE1, 0x08),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CLK_EP_DIV_MODE0, 0x19),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CLK_EP_DIV_MODE1, 0x28),
> + QMP_PHY_INIT_CFG(QSERDES_PLL_CLK_ENABLE1, 0x90),
> +};
> +
> +static const struct qmp_phy_init_tbl ipq8074_pcie_gen3_tx_tbl[] = {
> + QMP_PHY_INIT_CFG(QSERDES_TX0_RES_CODE_LANE_OFFSET_TX, 0x02),
> + QMP_PHY_INIT_CFG(QSERDES_TX0_RCV_DETECT_LVL_2, 0x12),
> + QMP_PHY_INIT_CFG(QSERDES_TX0_HIGHZ_DRVR_EN, 0x10),
> + QMP_PHY_INIT_CFG(QSERDES_TX0_LANE_MODE_1, 0x06),
> +};
> +
> +static const struct qmp_phy_init_tbl ipq8074_pcie_gen3_rx_tbl[] = {
> + QMP_PHY_INIT_CFG(QSERDES_RX0_SIGDET_CNTRL, 0x03),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_SIGDET_ENABLES, 0x1c),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_SIGDET_DEGLITCH_CNTRL, 0x14),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_EQU_ADAPTOR_CNTRL2, 0xe),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_EQU_ADAPTOR_CNTRL3, 0x4),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_EQU_ADAPTOR_CNTRL4, 0x1b),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_DFE_EN_TIMER, 0x04),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_UCDR_SO_SATURATION_AND_ENABLE, 0x7f),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_UCDR_PI_CONTROLS, 0x70),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x73),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_OFFSET_ADAPTOR_CNTRL2, 0x80),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_10_LOW, 0x00),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_10_HIGH, 0x02),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_10_HIGH2, 0xc8),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_10_HIGH3, 0x09),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_10_HIGH4, 0xb1),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_01_LOW, 0x01),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_01_HIGH, 0x02),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_01_HIGH2, 0xc8),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_01_HIGH3, 0x09),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_01_HIGH4, 0xb1),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_00_LOW, 0xf0),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_00_HIGH, 0x2),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_00_HIGH2, 0x2f),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_00_HIGH3, 0xd3),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_MODE_00_HIGH4, 0x40),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_IDAC_TSETTLE_HIGH, 0x00),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_RX_IDAC_TSETTLE_LOW, 0xc0),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_UCDR_FO_GAIN, 0x0c),
> + QMP_PHY_INIT_CFG(QSERDES_RX0_UCDR_SO_GAIN, 0x02),
> +};
> +
> +static const struct qmp_phy_init_tbl ipq8074_pcie_gen3_pcs_tbl[] = {
> + QMP_PHY_INIT_CFG(PCS_COM_FLL_CNTRL2, 0x83),
> + QMP_PHY_INIT_CFG(PCS_COM_FLL_CNT_VAL_L, 0x9),
> + QMP_PHY_INIT_CFG(PCS_COM_FLL_CNT_VAL_H_TOL, 0x42),
> + QMP_PHY_INIT_CFG(PCS_COM_FLL_MAN_CODE, 0x40),
> + QMP_PHY_INIT_CFG(PCS_COM_FLL_CNTRL1, 0x01),
> + QMP_PHY_INIT_CFG(PCS_COM_P2U3_WAKEUP_DLY_TIME_AUXCLK_H, 0x0),
> + QMP_PHY_INIT_CFG(PCS_COM_P2U3_WAKEUP_DLY_TIME_AUXCLK_L, 0x1),
> + QMP_PHY_INIT_CFG(PCS_PCIE_OSC_DTCT_ACTIONS, 0x0),
> + QMP_PHY_INIT_CFG(PCS_PCIE_L1P1_WAKEUP_DLY_TIME_AUXCLK_H, 0x00),
> + QMP_PHY_INIT_CFG(PCS_PCIE_L1P1_WAKEUP_DLY_TIME_AUXCLK_L, 0x01),
> + QMP_PHY_INIT_CFG(PCS_PCIE_L1P2_WAKEUP_DLY_TIME_AUXCLK_H, 0x00),
> + QMP_PHY_INIT_CFG(PCS_PCIE_L1P2_WAKEUP_DLY_TIME_AUXCLK_L, 0x01),
> + QMP_PHY_INIT_CFG(PCS_PCIE_EQ_CONFIG1, 0x11),
> + QMP_PHY_INIT_CFG(PCS_PCIE_EQ_CONFIG2, 0xb),
> + QMP_PHY_INIT_CFG(PCS_PCIE_POWER_STATE_CONFIG4, 0x07),
> + QMP_PHY_INIT_CFG(PCS_PCIE_OSC_DTCT_CONFIG2, 0x52),
> + QMP_PHY_INIT_CFG(PCS_PCIE_OSC_DTCT_MODE2_CONFIG2, 0x50),
> + QMP_PHY_INIT_CFG(PCS_PCIE_OSC_DTCT_MODE2_CONFIG4, 0x1a),
> + QMP_PHY_INIT_CFG(PCS_PCIE_OSC_DTCT_MODE2_CONFIG5, 0x6),
> + QMP_PHY_INIT_CFG(PCS_COM_G12S1_TXDEEMPH_M3P5DB, 0x10),
> + QMP_PHY_INIT_CFG(PCS_PCIE_ENDPOINT_REFCLK_DRIVE, 0xc1),
> + QMP_PHY_INIT_CFG(PCS_COM_RX_DCC_CAL_CONFIG, 0x01),
> + QMP_PHY_INIT_CFG(PCS_COM_RX_SIGDET_LVL, 0xaa),
> + QMP_PHY_INIT_CFG(PCS_COM_REFGEN_REQ_CONFIG1, 0x0d),
> +};
> +
> 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),
> @@ -3493,6 +3620,36 @@ static const struct qmp_phy_cfg ipq8074_pciephy_cfg = {
> .pwrdn_delay_max = 1005, /* us */
> };
>
> +static const struct qmp_phy_cfg ipq8074_pciephy_gen3_cfg = {
> + .type = PHY_TYPE_PCIE,
> + .nlanes = 1,
> +
> + .serdes_tbl = ipq8074_pcie_gen3_serdes_tbl,
> + .serdes_tbl_num = ARRAY_SIZE(ipq8074_pcie_gen3_serdes_tbl),
> + .tx_tbl = ipq8074_pcie_gen3_tx_tbl,
> + .tx_tbl_num = ARRAY_SIZE(ipq8074_pcie_gen3_tx_tbl),
> + .rx_tbl = ipq8074_pcie_gen3_rx_tbl,
> + .rx_tbl_num = ARRAY_SIZE(ipq8074_pcie_gen3_rx_tbl),
> + .pcs_tbl = ipq8074_pcie_gen3_pcs_tbl,
> + .pcs_tbl_num = ARRAY_SIZE(ipq8074_pcie_gen3_pcs_tbl),
> + .clk_list = ipq8074_pciephy_clk_l,
> + .num_clks = ARRAY_SIZE(ipq8074_pciephy_clk_l),
> + .reset_list = ipq8074_pciephy_reset_l,
> + .num_resets = ARRAY_SIZE(ipq8074_pciephy_reset_l),
> + .vreg_list = NULL,
> + .num_vregs = 0,
> + .regs = ipq_pciephy_gen3_regs_layout,
> +
> + .start_ctrl = SERDES_START | PCS_START,
> + .pwrdn_ctrl = SW_PWRDN | REFCLK_DRV_DSBL,
> +
> + .has_phy_com_ctrl = false,
> + .has_lane_rst = false,
> + .has_pwrdn_delay = true,
> + .pwrdn_delay_min = 995, /* us */
> + .pwrdn_delay_max = 1005, /* us */
> +};
> +
> static const struct qmp_phy_cfg ipq6018_pciephy_cfg = {
> .type = PHY_TYPE_PCIE,
> .nlanes = 1,
> @@ -5568,6 +5725,7 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
> {
> struct clk_fixed_rate *fixed;
> struct clk_init_data init = { };
> + u32 rate;
> int ret;
>
> ret = of_property_read_string(np, "clock-output-names", &init.name);
> @@ -5582,8 +5740,16 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
>
> init.ops = &clk_fixed_rate_ops;
>
> - /* controllers using QMP phys use 125MHz pipe clock interface */
> - fixed->fixed_rate = 125000000;
> + /*
> + * Controllers using QMP PHY-s use 125MHz pipe clock interface
> + * unless other frequency is specified in the DTS.
> + */
> + ret = of_property_read_u32(np, "clock-output-rate", &rate);
> + if (ret)
> + fixed->fixed_rate = 125000000;
> + else
> + fixed->fixed_rate = rate;
> +
> fixed->hw.init = &init;
>
> ret = devm_clk_hw_register(qmp->dev, &fixed->hw);
> @@ -5959,6 +6125,9 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = {
> }, {
> .compatible = "qcom,ipq8074-qmp-pcie-phy",
> .data = &ipq8074_pciephy_cfg,
> + }, {
> + .compatible = "qcom,ipq8074-qmp-gen3-pcie-phy",
> + .data = &ipq8074_pciephy_gen3_cfg,
> }, {
> .compatible = "qcom,ipq6018-qmp-pcie-phy",
> .data = &ipq6018_pciephy_cfg,
> --
> 2.36.1
--
~Vinod
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