diff mbox series

[v5,3/5] phy: qcom-qmp-pcie: Support SM8450 PCIe1 PHY in EP mode

Message ID 20220926173435.881688-4-dmitry.baryshkov@linaro.org
State New
Headers show
Series PCI: qcom: Support using the same PHY for both RC and EP | expand

Commit Message

Dmitry Baryshkov Sept. 26, 2022, 5:34 p.m. UTC 
Add support for using PCIe1 (gen4x2) in EP mode on SM8450. The tables to
program are mostly common with the RC mode tables, so only register
difference are split into separate RC and EP tables.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c      | 78 +++++++++++++++----
 .../qualcomm/phy-qcom-qmp-pcs-pcie-v5_20.h    |  1 +
 2 files changed, 64 insertions(+), 15 deletions(-)
diff mbox series

Patch

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index dd7911879b10..b877cd5b4da8 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -1185,15 +1185,29 @@  static const struct qmp_phy_init_tbl sm8450_qmp_gen3x1_pcie_pcs_misc_tbl[] = {
 };
 
 static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_serdes_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIAS_EN_CLKBUFLR_EN, 0x14),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_IVCO, 0x0f),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP_EN, 0x46),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP_CFG, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_VCO_TUNE_MAP, 0x02),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_HSCLK_SEL, 0x12),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_HSCLK_HS_SWITCH_SEL, 0x00),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CORECLK_DIV_MODE0, 0x0a),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CORECLK_DIV_MODE1, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CMN_MISC1, 0x88),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CMN_CONFIG, 0x06),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CMN_MODE, 0x14),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_VCO_DC_LEVEL_CTRL, 0x0f),
+};
+
+static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_rc_serdes_tbl[] = {
 	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, 0x97),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_STEP_SIZE2_MODE1, 0x0c),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIAS_EN_CLKBUFLR_EN, 0x14),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CLK_ENABLE1, 0x90),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_IVCO, 0x0f),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE0, 0x06),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE1, 0x06),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE0, 0x16),
@@ -1201,8 +1215,6 @@  static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_serdes_tbl[] = {
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE0, 0x36),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE1, 0x36),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYSCLK_EN_SEL, 0x08),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP_EN, 0x46),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP_CFG, 0x04),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE0, 0x0a),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE0, 0x1a),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE1, 0x14),
@@ -1215,17 +1227,8 @@  static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_serdes_tbl[] = {
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START1_MODE1, 0x55),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START2_MODE1, 0x55),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DIV_FRAC_START3_MODE1, 0x05),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_VCO_TUNE_MAP, 0x02),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CLK_SELECT, 0x34),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_HSCLK_SEL, 0x12),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_HSCLK_HS_SWITCH_SEL, 0x00),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CORECLK_DIV_MODE0, 0x0a),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CORECLK_DIV_MODE1, 0x04),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CMN_MISC1, 0x88),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CORE_CLK_EN, 0x20),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CMN_CONFIG, 0x06),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CMN_MODE, 0x14),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_VCO_DC_LEVEL_CTRL, 0x0f),
 };
 
 static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_tx_tbl[] = {
@@ -1293,14 +1296,44 @@  static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_pcs_tbl[] = {
 };
 
 static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_pcs_misc_tbl[] = {
-	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_ENDPOINT_REFCLK_DRIVE, 0xc1),
-	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_OSC_DTCT_ACTIONS, 0x00),
 	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_G4_EQ_CONFIG5, 0x02),
 	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_EQ_CONFIG1, 0x16),
 	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_RX_MARGINING_CONFIG3, 0x28),
 	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_G4_PRE_GAIN, 0x2e),
 };
 
+static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_rc_pcs_misc_tbl[] = {
+	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_ENDPOINT_REFCLK_DRIVE, 0xc1),
+	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_OSC_DTCT_ACTIONS, 0x00),
+};
+
+static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_ep_serdes_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BG_TIMER, 0x02),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYS_CLK_CTRL, 0x07),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE0, 0x27),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE1, 0x0a),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE0, 0x17),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE1, 0x19),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE0, 0x00),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE1, 0x03),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYSCLK_EN_SEL, 0x00),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE0, 0xff),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE0, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE1, 0xff),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE1, 0x09),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DEC_START_MODE0, 0x19),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DEC_START_MODE1, 0x28),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN0_MODE0, 0xfb),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN1_MODE0, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN0_MODE1, 0xfb),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN1_MODE1, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CORE_CLK_EN, 0x60),
+};
+
+static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl[] = {
+	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_OSC_DTCT_MODE2_CONFIG5, 0x08),
+};
+
 struct qmp_phy_cfg_tables {
 	const struct qmp_phy_init_tbl *serdes;
 	int serdes_num;
@@ -1836,6 +1869,21 @@  static const struct qmp_phy_cfg sm8450_qmp_gen4x2_pciephy_cfg = {
 		.pcs_misc	= sm8450_qmp_gen4x2_pcie_pcs_misc_tbl,
 		.pcs_misc_num	= ARRAY_SIZE(sm8450_qmp_gen4x2_pcie_pcs_misc_tbl),
 	},
+
+	.tables_rc = &(const struct qmp_phy_cfg_tables) {
+		.serdes		= sm8450_qmp_gen4x2_pcie_rc_serdes_tbl,
+		.serdes_num	= ARRAY_SIZE(sm8450_qmp_gen4x2_pcie_rc_serdes_tbl),
+		.pcs_misc	= sm8450_qmp_gen4x2_pcie_rc_pcs_misc_tbl,
+		.pcs_misc_num	= ARRAY_SIZE(sm8450_qmp_gen4x2_pcie_rc_pcs_misc_tbl),
+	},
+
+	.tables_ep = &(const struct qmp_phy_cfg_tables) {
+		.serdes		= sm8450_qmp_gen4x2_pcie_ep_serdes_tbl,
+		.serdes_num	= ARRAY_SIZE(sm8450_qmp_gen4x2_pcie_ep_serdes_tbl),
+		.pcs_misc	= sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl,
+		.pcs_misc_num	= ARRAY_SIZE(sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl),
+	},
+
 	.clk_list		= sdm845_pciephy_clk_l,
 	.num_clks		= ARRAY_SIZE(sdm845_pciephy_clk_l),
 	.reset_list		= sdm845_pciephy_reset_l,
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v5_20.h b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v5_20.h
index 1eedf50cf9cb..c9fa90b45475 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v5_20.h
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v5_20.h
@@ -8,6 +8,7 @@ 
 
 /* Only for QMP V5_20 PHY - PCIe PCS registers */
 #define QPHY_V5_20_PCS_PCIE_ENDPOINT_REFCLK_DRIVE	0x01c
+#define QPHY_V5_20_PCS_PCIE_OSC_DTCT_MODE2_CONFIG5	0x084
 #define QPHY_V5_20_PCS_PCIE_OSC_DTCT_ACTIONS		0x090
 #define QPHY_V5_20_PCS_PCIE_EQ_CONFIG1			0x0a0
 #define QPHY_V5_20_PCS_PCIE_G4_EQ_CONFIG5		0x108