[PATCH v2 3/6] phy: qcom: qmp-pcie: Add endpoint PHY configuration for QCS8300
From: Krishna Chaitanya Chundru
Date: Mon Oct 19 2026 - 05:32:40 EST
Monaco supports PCIe Endpoint mode on both PCIe controllers. Reuse
the existing SA8775P Endpoint PHY programming for the 16 GT/s x2 PHY and
add a new 16 GT/s x4 Endpoint PHY configuration with the required RX
tuning parameters. The new RX tuning sequence is common to both RC and EP
modes.
This allows both Monaco PCIe controllers to operate reliably in
Endpoint mode.
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxxxxxxxx>
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>
---
drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 105 +++++++++++++++++++++++++++++++
1 file changed, 105 insertions(+)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index da83358c97ea..cf169d7cbd92 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -1231,6 +1231,58 @@ static const struct qmp_phy_init_tbl qcs8300_qmp_gen4x2_pcie_rx_alt_tbl[] = {
QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_TX_ADAPT_POST_THRESH2, 0x1f),
};
+static const struct qmp_phy_init_tbl qcs8300_qmp_gen4x4_pcie_rx_alt_tbl[] = {
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_AUX_DATA_THRESH_BIN_RATE_0_1, 0x3f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_AUX_DATA_THRESH_BIN_RATE_2_3, 0x37),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_DFE_3, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_DFE_CTLE_POST_CAL_OFFSET, 0x38),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_DFE_DAC_ENABLE1, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_GM_CAL, 0x05),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_PHPRE_CTRL, 0x20),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_EQU_ADAPTOR_CNTRL4, 0x0b),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x7c),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_IDAC_SAOFFSET, 0x10),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH1_RATE210, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH1_RATE3, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH2_RATE210, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH2_RATE3, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH3_RATE210, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH3_RATE3, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH4_RATE3, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH5_RATE3, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MARG_COARSE_THRESH6_RATE3, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_Q_PI_INTRINSIC_BIAS_RATE32, 0x09),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE_0_1_B0, 0x9b),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE_0_1_B1, 0xb0),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE_0_1_B2, 0xd2),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE_0_1_B3, 0xf0),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE_0_1_B4, 0x42),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE_0_1_B5, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE_0_1_B6, 0x20),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE2_B0, 0x9b),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE2_B1, 0xb6),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE2_B2, 0xd2),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE2_B3, 0xf0),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE2_B4, 0x43),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE2_B5, 0xdd),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE2_B6, 0x0d),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE3_B0, 0xf3),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE3_B1, 0xf6),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE3_B2, 0xee),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE3_B3, 0xd2),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE3_B4, 0x83),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE3_B5, 0xf9),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_RX_MODE_RATE3_B6, 0x3d),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_TX_ADAPT_POST_THRESH1, 0x00),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_TX_ADAPT_POST_THRESH2, 0x1f),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_UCDR_FO_GAIN_RATE2, 0x0c),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_UCDR_FO_GAIN_RATE3, 0x08),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_UCDR_SO_GAIN_RATE3, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_UCDR_PI_CONTROLS, 0x16),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_VGA_CAL_CNTRL1, 0x04),
+ QMP_PHY_INIT_CFG(QSERDES_V5_20_RX_VGA_CAL_MAN_VAL, 0x08),
+};
+
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),
@@ -4583,6 +4635,56 @@ static const struct qmp_phy_cfg qcs8300_qmp_gen4x2_pciephy_cfg = {
.pcs_misc_num = ARRAY_SIZE(sa8775p_qmp_gen4_pcie_rc_pcs_misc_tbl),
},
+ .tbls_ep = &(const struct qmp_phy_cfg_tbls) {
+ .serdes = sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl,
+ .serdes_num = ARRAY_SIZE(sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl),
+ .pcs_misc = sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl,
+ .pcs_misc_num = ARRAY_SIZE(sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl),
+ .pcs = sa8775p_qmp_gen4x2_pcie_ep_pcs_alt_tbl,
+ .pcs_num = ARRAY_SIZE(sa8775p_qmp_gen4x2_pcie_ep_pcs_alt_tbl),
+ },
+
+ .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 = pciephy_v5_regs_layout,
+
+ .pwrdn_ctrl = SW_PWRDN | REFCLK_DRV_DSBL,
+ .phy_status = PHYSTATUS_4_20,
+};
+
+static const struct qmp_phy_cfg qcs8300_qmp_gen4x4_pciephy_cfg = {
+ .lanes = 4,
+ .offsets = &qmp_pcie_offsets_v5_30,
+
+ .tbls = {
+ .serdes = sa8775p_qmp_gen4x4_pcie_serdes_alt_tbl,
+ .serdes_num = ARRAY_SIZE(sa8775p_qmp_gen4x4_pcie_serdes_alt_tbl),
+ .tx = sa8775p_qmp_gen4_pcie_tx_tbl,
+ .tx_num = ARRAY_SIZE(sa8775p_qmp_gen4_pcie_tx_tbl),
+ .rx = qcs8300_qmp_gen4x4_pcie_rx_alt_tbl,
+ .rx_num = ARRAY_SIZE(qcs8300_qmp_gen4x4_pcie_rx_alt_tbl),
+ .pcs = sa8775p_qmp_gen4_pcie_pcs_alt_tbl,
+ .pcs_num = ARRAY_SIZE(sa8775p_qmp_gen4_pcie_pcs_alt_tbl),
+ .pcs_misc = sa8775p_qmp_gen4_pcie_pcs_misc_tbl,
+ .pcs_misc_num = ARRAY_SIZE(sa8775p_qmp_gen4_pcie_pcs_misc_tbl),
+ },
+
+ .tbls_rc = &(const struct qmp_phy_cfg_tbls) {
+ .serdes = sa8775p_qmp_gen4x4_pcie_rc_serdes_alt_tbl,
+ .serdes_num = ARRAY_SIZE(sa8775p_qmp_gen4x4_pcie_rc_serdes_alt_tbl),
+ .pcs_misc = sa8775p_qmp_gen4_pcie_rc_pcs_misc_tbl,
+ .pcs_misc_num = ARRAY_SIZE(sa8775p_qmp_gen4_pcie_rc_pcs_misc_tbl),
+ },
+
+ .tbls_ep = &(const struct qmp_phy_cfg_tbls) {
+ .serdes = sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl,
+ .serdes_num = ARRAY_SIZE(sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl),
+ .pcs_misc = sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl,
+ .pcs_misc_num = ARRAY_SIZE(sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl),
+ },
+
.reset_list = sdm845_pciephy_reset_l,
.num_resets = ARRAY_SIZE(sdm845_pciephy_reset_l),
.vreg_list = qmp_phy_vreg_l,
@@ -6411,6 +6513,9 @@ static const struct of_device_id qmp_pcie_of_match_table[] = {
}, {
.compatible = "qcom,qcs8300-qmp-gen4x2-pcie-phy",
.data = &qcs8300_qmp_gen4x2_pciephy_cfg,
+ }, {
+ .compatible = "qcom,qcs8300-qmp-gen4x4-pcie-phy",
+ .data = &qcs8300_qmp_gen4x4_pciephy_cfg,
}, {
.compatible = "qcom,sa8775p-qmp-gen4x2-pcie-phy",
.data = &sa8775p_qmp_gen4x2_pciephy_cfg,
--
2.34.1