linux-kernel - [PATCH v3 09/20] phy: qcom-qmp-ufs: Add HS G4 mode support to SM8450 SoC

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Message-Id: <20221123074826.95369-10-manivannan.sadhasivam@linaro.org>
Date:   Wed, 23 Nov 2022 13:18:15 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     martin.petersen@...cle.com, jejb@...ux.ibm.com,
        andersson@...nel.org, vkoul@...nel.org
Cc:     quic_cang@...cinc.com, quic_asutoshd@...cinc.com,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-phy@...ts.infradead.org, linux-scsi@...r.kernel.org,
        dmitry.baryshkov@...aro.org, ahalaney@...hat.com,
        abel.vesa@...aro.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v3 09/20] phy: qcom-qmp-ufs: Add HS G4 mode support to SM8450 SoC

UFS PHY in SM8450 SoC is capable of operating at HS G4 mode. Hence, add the
required register settings using the tables_hs_g4 struct instance.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 .../phy/qualcomm/phy-qcom-qmp-pcs-ufs-v5.h    |  1 +
 drivers/phy/qualcomm/phy-qcom-qmp-ufs.c       | 48 +++++++++++++++++++
 2 files changed, 49 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v5.h b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v5.h
index bcca23493b7e..3aa4232f84a6 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v5.h
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v5.h
@@ -13,6 +13,7 @@
 #define QPHY_V5_PCS_UFS_PLL_CNTL			0x02c
 #define QPHY_V5_PCS_UFS_TX_LARGE_AMP_DRV_LVL		0x030
 #define QPHY_V5_PCS_UFS_TX_SMALL_AMP_DRV_LVL		0x038
+#define QPHY_V5_PCS_UFS_BIST_FIXED_PAT_CTRL		0x060
 #define QPHY_V5_PCS_UFS_TX_HSGEAR_CAPABILITY		0x074
 #define QPHY_V5_PCS_UFS_RX_HSGEAR_CAPABILITY		0x0b4
 #define QPHY_V5_PCS_UFS_DEBUG_BUS_CLKSEL		0x124
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
index d39ee28fb6a3..7a77db3196db 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
@@ -592,6 +592,46 @@ static const struct qmp_phy_init_tbl sm8350_ufsphy_pcs[] = {
 	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_MULTI_LANE_CTRL1, 0x02),
 };
 
+static const struct qmp_phy_init_tbl sm8350_ufsphy_g4_tx[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_TX_LANE_MODE_1, 0xe5),
+};
+
+static const struct qmp_phy_init_tbl sm8350_ufsphy_g4_rx[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_UCDR_PI_CTRL2, 0x81),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_TERM_BW, 0x6f),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL2, 0x00),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4a),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_EQU_ADAPTOR_CNTRL4, 0x0a),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_IDAC_MEASURE_TIME, 0x20),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_IDAC_TSETTLE_LOW, 0x80),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_IDAC_TSETTLE_HIGH, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_LOW, 0xbf),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_HIGH, 0xbf),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_HIGH2, 0x7f),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_HIGH3, 0x7f),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_00_HIGH4, 0x2d),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_LOW, 0x6d),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_HIGH, 0x6d),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_HIGH2, 0xed),
+	QMP_PHY_INIT_CFG(QSERDES_V5_RX_RX_MODE_01_HIGH4, 0x3c),
+};
+
+static const struct qmp_phy_init_tbl sm8350_ufsphy_g4_pcs[] = {
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_BIST_FIXED_PAT_CTRL, 0x0a),
+	/*
+	 * Following registers are not required for HS-G4 mode, but since these
+	 * are already programmed as part of previous init sequence, we'll program
+	 * again with reset values.
+	 */
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_PLL_CNTL, 0x0b),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_TIMER_20US_CORECLK_STEPS_MSB, 0x2d),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_TIMER_20US_CORECLK_STEPS_LSB, 0xb0),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_TX_PWM_GEAR_BAND, 0xff),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_TX_HS_GEAR_BAND, 0x15),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_TX_HSGEAR_CAPABILITY, 0x04),
+	QMP_PHY_INIT_CFG(QPHY_V5_PCS_UFS_RX_HSGEAR_CAPABILITY, 0x04),
+};
+
 struct qmp_phy_cfg_tbls {
 	/* Init sequence for PHY blocks - serdes, tx, rx, pcs */
 	const struct qmp_phy_init_tbl *serdes;
@@ -934,6 +974,14 @@ static const struct qmp_phy_cfg sm8450_ufsphy_cfg = {
 		.serdes		= sm8350_ufsphy_hs_b_serdes,
 		.serdes_num	= ARRAY_SIZE(sm8350_ufsphy_hs_b_serdes),
 	},
+	.tbls_hs_g4 = {
+		.tx		= sm8350_ufsphy_g4_tx,
+		.tx_num		= ARRAY_SIZE(sm8350_ufsphy_g4_tx),
+		.rx		= sm8350_ufsphy_g4_rx,
+		.rx_num		= ARRAY_SIZE(sm8350_ufsphy_g4_rx),
+		.pcs		= sm8350_ufsphy_g4_pcs,
+		.pcs_num	= ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
+	},
 	.clk_list		= sm8450_ufs_phy_clk_l,
 	.num_clks		= ARRAY_SIZE(sm8450_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
-- 
2.25.1