phy: qcom-qmp: Add SM8450 PCIe0 PHY support

There are two different PCIe PHYs on SM8450, one having one lane (v5)
and another with two lanes (v5.20). This commit adds support for the
first PCIe phy only, support for the second PCIe PHY is coming in next
commits.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211214225846.2043361-4-dmitry.baryshkov@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

2 files changed, 158 insertions, 0 deletions

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index 13a249ec8ab6..e73900ea2728 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -2866,6 +2866,97 @@ static const struct qmp_phy_init_tbl qcm2290_usb3_pcs_tbl[] = {
 	QMP_PHY_INIT_CFG(QPHY_V3_PCS_RX_SIGDET_LVL, 0x88),
 };
 
+static const struct qmp_phy_init_tbl sm8450_qmp_gen3x1_pcie_serdes_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYSCLK_EN_SEL, 0x08),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CLK_SELECT, 0x34),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CORECLK_DIV_MODE1, 0x08),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_IVCO, 0x0f),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP_EN, 0x42),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_VCO_TUNE1_MODE0, 0x24),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_VCO_TUNE2_MODE1, 0x03),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_VCO_TUNE1_MODE1, 0xb4),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_VCO_TUNE_MAP, 0x02),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIN_VCOCAL_HSCLK_SEL, 0x11),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DEC_START_MODE0, 0x82),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START3_MODE0, 0x03),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START2_MODE0, 0x55),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START1_MODE0, 0x55),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE0, 0x1a),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE0, 0x0a),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DEC_START_MODE1, 0x68),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START3_MODE1, 0x02),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START2_MODE1, 0xaa),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START1_MODE1, 0xab),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE1, 0x34),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE1, 0x14),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_HSCLK_SEL, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE0, 0x06),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE0, 0x16),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE0, 0x36),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE1, 0x06),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE1, 0x16),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE1, 0x36),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1e),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0xca),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE2_MODE1, 0x18),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE1_MODE1, 0xa2),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYSCLK_BUF_ENABLE, 0x07),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_EN_CENTER, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_PER1, 0x31),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_PER2, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_STEP_SIZE1_MODE0, 0xde),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_STEP_SIZE2_MODE0, 0x07),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_STEP_SIZE1_MODE1, 0x4c),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_STEP_SIZE2_MODE1, 0x06),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CLK_ENABLE1, 0x90),
+};
+
+static const struct qmp_phy_init_tbl sm8450_qmp_gen3x1_pcie_tx_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_TX_PI_QEC_CTRL, 0x20),
+	QMP_PHY_INIT_CFG(QSERDES_V5_TX_LANE_MODE_1, 0x75),
+	QMP_PHY_INIT_CFG(QSERDES_V5_TX_LANE_MODE_4, 0x3f),
+	QMP_PHY_INIT_CFG(QSERDES_V5_TX_RES_CODE_LANE_OFFSET_TX, 0x16),
+	QMP_PHY_INIT_CFG(QSERDES_V5_TX_RES_CODE_LANE_OFFSET_RX, 0x04),
+};
+
+static const struct qmp_phy_init_tbl sm8450_qmp_gen3x1_pcie_rx_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_LOW, 0x7f),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_HIGH, 0xff),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_HIGH2, 0xbf),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_HIGH3, 0x3f),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_HIGH4, 0xd8),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_LOW, 0xdc),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_HIGH, 0xdc),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_HIGH2, 0x5c),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_HIGH3, 0x34),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_HIGH4, 0xa6),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_10_HIGH3, 0x34),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_10_HIGH4, 0x38),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_VGA_CAL_CNTRL2, 0x07),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_GM_CAL, 0x00),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_UCDR_SB2_THRESH1, 0x08),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_UCDR_SB2_THRESH2, 0x08),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_UCDR_PI_CONTROLS, 0xf0),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_DFE_CTLE_POST_CAL_OFFSET, 0x38),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_TX_ADAPT_POST_THRESH, 0xf0),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL4, 0x07),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_UCDR_FO_GAIN, 0x09),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_UCDR_SO_GAIN, 0x05),
+};
+
+static const struct qmp_phy_init_tbl sm8450_qmp_gen3x1_pcie_pcs_tbl[] = {
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_RX_SIGDET_LVL, 0x77),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_RATE_SLEW_CNTRL1, 0x0b),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_REFGEN_REQ_CONFIG1, 0x05),
+};
+
+static const struct qmp_phy_init_tbl sm8450_qmp_gen3x1_pcie_pcs_misc_tbl[] = {
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_PCIE_OSC_DTCT_ACTIONS, 0x00),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_PCIE_INT_AUX_CLK_CONFIG1, 0x00),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_PCIE_EQ_CONFIG2, 0x0f),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_PCIE_ENDPOINT_REFCLK_DRIVE, 0xc1),
+};
+
 struct qmp_phy;
 
 /* struct qmp_phy_cfg - per-PHY initialization config */
@@ -4116,6 +4207,37 @@ static const struct qmp_phy_cfg sm8450_ufsphy_cfg = {
 	.is_dual_lane_phy	= true,
 };
 
+static const struct qmp_phy_cfg sm8450_qmp_gen3x1_pciephy_cfg = {
+	.type = PHY_TYPE_PCIE,
+	.nlanes = 1,
+
+	.serdes_tbl		= sm8450_qmp_gen3x1_pcie_serdes_tbl,
+	.serdes_tbl_num		= ARRAY_SIZE(sm8450_qmp_gen3x1_pcie_serdes_tbl),
+	.tx_tbl			= sm8450_qmp_gen3x1_pcie_tx_tbl,
+	.tx_tbl_num		= ARRAY_SIZE(sm8450_qmp_gen3x1_pcie_tx_tbl),
+	.rx_tbl			= sm8450_qmp_gen3x1_pcie_rx_tbl,
+	.rx_tbl_num		= ARRAY_SIZE(sm8450_qmp_gen3x1_pcie_rx_tbl),
+	.pcs_tbl		= sm8450_qmp_gen3x1_pcie_pcs_tbl,
+	.pcs_tbl_num		= ARRAY_SIZE(sm8450_qmp_gen3x1_pcie_pcs_tbl),
+	.pcs_misc_tbl		= sm8450_qmp_gen3x1_pcie_pcs_misc_tbl,
+	.pcs_misc_tbl_num	= ARRAY_SIZE(sm8450_qmp_gen3x1_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			= sm8250_pcie_regs_layout,
+
+	.start_ctrl             = SERDES_START | PCS_START,
+	.pwrdn_ctrl		= SW_PWRDN | REFCLK_DRV_DSBL,
+	.phy_status		= PHYSTATUS,
+
+	.has_pwrdn_delay	= true,
+	.pwrdn_delay_min	= 995,		/* us */
+	.pwrdn_delay_max	= 1005,		/* us */
+};
+
 static const struct qmp_phy_cfg qcm2290_usb3phy_cfg = {
 	.type			= PHY_TYPE_USB3,
 	.nlanes			= 1,
@@ -5775,6 +5897,9 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = {
 		.compatible = "qcom,sm8350-qmp-usb3-uni-phy",
 		.data = &sm8350_usb3_uniphy_cfg,
 	}, {
+		.compatible = "qcom,sm8450-qmp-gen3x1-pcie-phy",
+		.data = &sm8450_qmp_gen3x1_pciephy_cfg,
+	}, {
 		.compatible = "qcom,sm8450-qmp-ufs-phy",
 		.data = &sm8450_ufsphy_cfg,
 	}, {
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.h b/drivers/phy/qualcomm/phy-qcom-qmp.h
index 3d123fbe42d2..eeeef8d40876 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.h
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.h
@@ -1070,6 +1070,15 @@
 #define QPHY_V4_20_PCS_LANE1_INSIG_MX_CTRL2		0x828
 
 /* Only for QMP V5 PHY - QSERDES COM registers */
+#define QSERDES_V5_COM_SSC_EN_CENTER			0x010
+#define QSERDES_V5_COM_SSC_PER1				0x01c
+#define QSERDES_V5_COM_SSC_PER2				0x020
+#define QSERDES_V5_COM_SSC_STEP_SIZE1_MODE0		0x024
+#define QSERDES_V5_COM_SSC_STEP_SIZE2_MODE0		0x028
+#define QSERDES_V5_COM_SSC_STEP_SIZE1_MODE1		0x030
+#define QSERDES_V5_COM_SSC_STEP_SIZE2_MODE1		0x034
+#define QSERDES_V5_COM_CLK_ENABLE1			0x048
+#define QSERDES_V5_COM_SYSCLK_BUF_ENABLE		0x050
 #define QSERDES_V5_COM_PLL_IVCO				0x058
 #define QSERDES_V5_COM_CP_CTRL_MODE0			0x074
 #define QSERDES_V5_COM_CP_CTRL_MODE1			0x078
@@ -1085,10 +1094,22 @@
 #define QSERDES_V5_COM_DEC_START_MODE0			0x0bc
 #define QSERDES_V5_COM_LOCK_CMP2_MODE1			0x0b8
 #define QSERDES_V5_COM_DEC_START_MODE1			0x0c4
+#define QSERDES_V5_COM_DIV_FRAC_START1_MODE0		0x0cc
+#define QSERDES_V5_COM_DIV_FRAC_START2_MODE0		0x0d0
+#define QSERDES_V5_COM_DIV_FRAC_START3_MODE0		0x0d4
+#define QSERDES_V5_COM_DIV_FRAC_START1_MODE1		0x0d8
+#define QSERDES_V5_COM_DIV_FRAC_START2_MODE1		0x0dc
+#define QSERDES_V5_COM_DIV_FRAC_START3_MODE1		0x0e0
 #define QSERDES_V5_COM_VCO_TUNE_MAP			0x10c
+#define QSERDES_V5_COM_VCO_TUNE1_MODE0			0x110
+#define QSERDES_V5_COM_VCO_TUNE2_MODE0			0x114
+#define QSERDES_V5_COM_VCO_TUNE1_MODE1			0x118
+#define QSERDES_V5_COM_VCO_TUNE2_MODE1			0x11c
 #define QSERDES_V5_COM_VCO_TUNE_INITVAL2		0x124
+#define QSERDES_V5_COM_CLK_SELECT			0x154
 #define QSERDES_V5_COM_HSCLK_SEL			0x158
 #define QSERDES_V5_COM_HSCLK_HS_SWITCH_SEL		0x15c
+#define QSERDES_V5_COM_CORECLK_DIV_MODE1		0x16c
 #define QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE1_MODE0	0x1ac
 #define QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE2_MODE0	0x1b0
 #define QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE1_MODE1	0x1b4
@@ -1131,6 +1152,7 @@
 #define QSERDES_V5_RX_AC_JTAG_ENABLE			0x068
 #define QSERDES_V5_RX_AC_JTAG_MODE			0x078
 #define QSERDES_V5_RX_RX_TERM_BW			0x080
+#define QSERDES_V5_RX_TX_ADAPT_POST_THRESH		0x0cc
 #define QSERDES_V5_RX_VGA_CAL_CNTRL1			0x0d4
 #define QSERDES_V5_RX_VGA_CAL_CNTRL2			0x0d8
 #define QSERDES_V5_RX_GM_CAL				0x0dc
@@ -1168,6 +1190,17 @@
 #define QSERDES_V5_RX_DCC_CTRL1				0x1a8
 #define QSERDES_V5_RX_VTH_CODE				0x1b0
 
+/* Only for QMP V5 PHY - USB/PCIe PCS registers */
+#define QPHY_V5_PCS_REFGEN_REQ_CONFIG1			0x0dc
+#define QPHY_V5_PCS_RX_SIGDET_LVL			0x188
+#define QPHY_V5_PCS_RATE_SLEW_CNTRL1			0x198
+
+/* Only for QMP V5 PHY - PCS_PCIE registers */
+#define QPHY_V5_PCS_PCIE_ENDPOINT_REFCLK_DRIVE		0x20
+#define QPHY_V5_PCS_PCIE_INT_AUX_CLK_CONFIG1		0x54
+#define QPHY_V5_PCS_PCIE_OSC_DTCT_ACTIONS		0x94
+#define QPHY_V5_PCS_PCIE_EQ_CONFIG2			0xa8
+
 /* Only for QMP V5 PHY - UFS PCS registers */
 #define QPHY_V5_PCS_UFS_TIMER_20US_CORECLK_STEPS_MSB	0x00c
 #define QPHY_V5_PCS_UFS_TIMER_20US_CORECLK_STEPS_LSB	0x010