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Date:   Tue, 21 Nov 2023 23:10:41 -0800
From:   Can Guo <quic_cang@...cinc.com>
To:     quic_cang@...cinc.com, bvanassche@....org, mani@...nel.org,
        stanley.chu@...iatek.com, adrian.hunter@...el.com,
        beanhuo@...ron.com, avri.altman@....com, junwoo80.lee@...sung.com,
        martin.petersen@...cle.com
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        linux-arm-msm@...r.kernel.org (open list:ARM/QUALCOMM SUPPORT),
        linux-phy@...ts.infradead.org (open list:GENERIC PHY FRAMEWORK),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 10/11] phy: qualcomm: phy-qcom-qmp-ufs: Add High Speed Gear 5 support for SM8550

On SM8550, two sets of UFS PHY settings are provided, one set is to support
HS-G5, another set is to support HS-G4 and lower gears. The two sets of PHY
settings are programming different values to different registers, mixing
the two sets and/or overwriting one set with another set is definitely not
blessed by UFS PHY designers.

To add HS-G5 support for SM8550, split the two sets of PHY settings into
their dedicated tables, G5 specific settings are put into .tbls_hs_max,
no-G5 settings are put into .tbls_hs_not_max. Only the common parts of the
two sets of PHY settings are left in the .tbls.

In this case, .tbls alone is not a complete set of PHY settings, so either
tbls_hs_max or tbls_hs_not_max should be applied on top of the .tbls to
become a complete set of PHY settings.

Signed-off-by: Can Guo <quic_cang@...cinc.com>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h     |   2 +
 drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h |   2 +
 .../qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h    |   9 ++
 drivers/phy/qualcomm/phy-qcom-qmp-ufs.c            | 102 +++++++++++++++++++--
 4 files changed, 105 insertions(+), 10 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h
index c23d5e4..e563af5 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h
@@ -18,6 +18,7 @@
 #define QPHY_V6_PCS_UFS_BIST_FIXED_PAT_CTRL		0x060
 #define QPHY_V6_PCS_UFS_TX_HSGEAR_CAPABILITY		0x074
 #define QPHY_V6_PCS_UFS_RX_HSGEAR_CAPABILITY		0x0bc
+#define QPHY_V6_PCS_UFS_RX_HS_G5_SYNC_LENGTH_CAPABILITY	0x12c
 #define QPHY_V6_PCS_UFS_DEBUG_BUS_CLKSEL		0x158
 #define QPHY_V6_PCS_UFS_LINECFG_DISABLE			0x17c
 #define QPHY_V6_PCS_UFS_RX_MIN_HIBERN8_TIME		0x184
@@ -27,5 +28,6 @@
 #define QPHY_V6_PCS_UFS_READY_STATUS			0x1a8
 #define QPHY_V6_PCS_UFS_TX_MID_TERM_CTRL1		0x1f4
 #define QPHY_V6_PCS_UFS_MULTI_LANE_CTRL1		0x1fc
+#define QPHY_V6_PCS_UFS_RX_HSG5_SYNC_WAIT_TIME		0x220
 
 #endif
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h
index f420f8f..ef392ce 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h
@@ -56,6 +56,8 @@
 #define QSERDES_V6_COM_SYS_CLK_CTRL				0xe4
 #define QSERDES_V6_COM_SYSCLK_BUF_ENABLE			0xe8
 #define QSERDES_V6_COM_PLL_IVCO					0xf4
+#define QSERDES_V6_COM_CMN_IETRIM				0xfc
+#define QSERDES_V6_COM_CMN_IPTRIM				0x100
 #define QSERDES_V6_COM_SYSCLK_EN_SEL				0x110
 #define QSERDES_V6_COM_RESETSM_CNTRL				0x118
 #define QSERDES_V6_COM_LOCK_CMP_EN				0x120
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h
index 674f158..48f31c8 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h
@@ -15,8 +15,15 @@
 
 #define QSERDES_UFS_V6_RX_UCDR_FASTLOCK_FO_GAIN_RATE2		0x08
 #define QSERDES_UFS_V6_RX_UCDR_FASTLOCK_FO_GAIN_RATE4		0x10
+#define QSERDES_UFS_V6_RX_UCDR_FASTLOCK_SO_GAIN_RATE4		0x24
+#define QSERDES_UFS_V6_RX_UCDR_FASTLOCK_COUNT_HIGH_RATE4	0x54
 #define QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE2			0xd4
+#define QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE4			0xdc
+#define QSERDES_UFS_V6_RX_UCDR_SO_GAIN_RATE4			0xf0
+#define QSERDES_UFS_V6_RX_UCDR_PI_CONTROLS			0xf4
 #define QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL			0x178
+#define QSERDES_UFS_V6_RX_EQ_OFFSET_ADAPTOR_CNTRL1		0x1bc
+#define QSERDES_UFS_V6_RX_OFFSET_ADAPTOR_CNTRL3			0x1c4
 #define QSERDES_UFS_V6_RX_MODE_RATE_0_1_B0			0x208
 #define QSERDES_UFS_V6_RX_MODE_RATE_0_1_B1			0x20c
 #define QSERDES_UFS_V6_RX_MODE_RATE_0_1_B3			0x214
@@ -28,6 +35,8 @@
 #define QSERDES_UFS_V6_RX_MODE_RATE3_B5				0x264
 #define QSERDES_UFS_V6_RX_MODE_RATE3_B8				0x270
 #define QSERDES_UFS_V6_RX_MODE_RATE4_B3				0x280
+#define QSERDES_UFS_V6_RX_MODE_RATE4_B4				0x284
 #define QSERDES_UFS_V6_RX_MODE_RATE4_B6				0x28c
+#define QSERDES_UFS_V6_RX_DLL0_FTUNE_CTRL			0x2f8
 
 #endif
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
index cae27a9..7a382c4 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
@@ -649,15 +649,22 @@ static const struct qmp_phy_init_tbl sm8550_ufsphy_serdes[] = {
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_HSCLK_SEL_1, 0x11),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_HSCLK_HS_SWITCH_SEL_1, 0x00),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP_EN, 0x01),
-	QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_MAP, 0x04),
-	QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_IVCO, 0x0f),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_INITVAL2, 0x00),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_DEC_START_MODE0, 0x41),
-	QMP_PHY_INIT_CFG(QSERDES_V6_COM_CP_CTRL_MODE0, 0x0a),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_RCTRL_MODE0, 0x18),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_CCTRL_MODE0, 0x14),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP1_MODE0, 0x7f),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP2_MODE0, 0x06),
+};
+
+static const struct qmp_phy_init_tbl sm8550_ufsphy_hs_b_serdes[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_MAP, 0x44),
+};
+
+static const struct qmp_phy_init_tbl sm8550_ufsphy_g4_serdes[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_MAP, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_IVCO, 0x0f),
+	QMP_PHY_INIT_CFG(QSERDES_V6_COM_CP_CTRL_MODE0, 0x0a),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_DEC_START_MODE1, 0x4c),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_CP_CTRL_MODE1, 0x0a),
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_RCTRL_MODE1, 0x18),
@@ -666,19 +673,24 @@ static const struct qmp_phy_init_tbl sm8550_ufsphy_serdes[] = {
 	QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP2_MODE1, 0x07),
 };
 
-static const struct qmp_phy_init_tbl sm8550_ufsphy_hs_b_serdes[] = {
-	QMP_PHY_INIT_CFG(QSERDES_V6_COM_VCO_TUNE_MAP, 0x44),
+static const struct qmp_phy_init_tbl sm8550_ufsphy_g5_serdes[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_IVCO, 0x1f),
+	QMP_PHY_INIT_CFG(QSERDES_V6_COM_CMN_IETRIM, 0x1b),
+	QMP_PHY_INIT_CFG(QSERDES_V6_COM_CMN_IPTRIM, 0x1c),
+	QMP_PHY_INIT_CFG(QSERDES_V6_COM_CP_CTRL_MODE0, 0x06),
 };
 
 static const struct qmp_phy_init_tbl sm8550_ufsphy_tx[] = {
 	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_TX_LANE_MODE_1, 0x05),
 	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_TX_RES_CODE_LANE_OFFSET_TX, 0x07),
+};
+
+static const struct qmp_phy_init_tbl sm8550_ufsphy_g4_tx[] = {
 	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_TX_FR_DCC_CTRL, 0x4c),
 };
 
 static const struct qmp_phy_init_tbl sm8550_ufsphy_rx[] = {
 	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE2, 0x0c),
-	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL, 0x0e),
 
 	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE_0_1_B0, 0xc2),
 	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE_0_1_B1, 0xc2),
@@ -694,16 +706,45 @@ static const struct qmp_phy_init_tbl sm8550_ufsphy_rx[] = {
 	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE3_B8, 0x02),
 };
 
+static const struct qmp_phy_init_tbl sm8550_ufsphy_g4_rx[] = {
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL, 0x0e),
+};
+
+static const struct qmp_phy_init_tbl sm8550_ufsphy_g5_rx[] = {
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE4, 0x0c),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_SO_GAIN_RATE4, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x14),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_PI_CONTROLS, 0x07),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_OFFSET_ADAPTOR_CNTRL3, 0x0e),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FASTLOCK_COUNT_HIGH_RATE4, 0x02),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FASTLOCK_FO_GAIN_RATE4, 0x1c),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FASTLOCK_SO_GAIN_RATE4, 0x06),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL, 0x08),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE4_B3, 0xb9),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE4_B4, 0x4f),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_MODE_RATE4_B6, 0xff),
+	QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_DLL0_FTUNE_CTRL, 0x30),
+};
+
 static const struct qmp_phy_init_tbl sm8550_ufsphy_pcs[] = {
 	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_SIGDET_CTRL2, 0x69),
 	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_TX_LARGE_AMP_DRV_LVL, 0x0f),
 	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_TX_MID_TERM_CTRL1, 0x43),
-	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_PLL_CNTL, 0x2b),
 	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_MULTI_LANE_CTRL1, 0x02),
+};
+
+static const struct qmp_phy_init_tbl sm8550_ufsphy_g4_pcs[] = {
+	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_PLL_CNTL, 0x2b),
 	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_TX_HSGEAR_CAPABILITY, 0x04),
 	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_HSGEAR_CAPABILITY, 0x04),
 };
 
+static const struct qmp_phy_init_tbl sm8550_ufsphy_g5_pcs[] = {
+	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_PLL_CNTL, 0x33),
+	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_HS_G5_SYNC_LENGTH_CAPABILITY, 0x4f),
+	QMP_PHY_INIT_CFG(QPHY_V6_PCS_UFS_RX_HSG5_SYNC_WAIT_TIME, 0x9e),
+};
+
 struct qmp_ufs_offsets {
 	u16 serdes;
 	u16 pcs;
@@ -735,6 +776,8 @@ struct qmp_phy_cfg {
 	const struct qmp_phy_cfg_tbls tbls;
 	/* Additional sequence for HS Series B */
 	const struct qmp_phy_cfg_tbls tbls_hs_b;
+	/* Additional sequence for HS Gears which are lower than the maximum supported HS Gear */
+	const struct qmp_phy_cfg_tbls tbls_hs_not_max;
 	/* Additional sequence for maximum supported HS Gear */
 	const struct qmp_phy_cfg_tbls tbls_hs_max;
 
@@ -1155,7 +1198,7 @@ static const struct qmp_phy_cfg sm8550_ufsphy_cfg = {
 	.lanes			= 2,
 
 	.offsets		= &qmp_ufs_offsets_v6,
-	.max_hs_gear		= UFS_HS_G4,
+	.max_hs_gear		= UFS_HS_G5,
 	.tbls = {
 		.serdes		= sm8550_ufsphy_serdes,
 		.serdes_num	= ARRAY_SIZE(sm8550_ufsphy_serdes),
@@ -1170,6 +1213,24 @@ static const struct qmp_phy_cfg sm8550_ufsphy_cfg = {
 		.serdes		= sm8550_ufsphy_hs_b_serdes,
 		.serdes_num	= ARRAY_SIZE(sm8550_ufsphy_hs_b_serdes),
 	},
+	.tbls_hs_not_max = {
+		.serdes		= sm8550_ufsphy_g4_serdes,
+		.serdes_num	= ARRAY_SIZE(sm8550_ufsphy_g4_serdes),
+		.tx		= sm8550_ufsphy_g4_tx,
+		.tx_num		= ARRAY_SIZE(sm8550_ufsphy_g4_tx),
+		.rx		= sm8550_ufsphy_g4_rx,
+		.rx_num		= ARRAY_SIZE(sm8550_ufsphy_g4_rx),
+		.pcs		= sm8550_ufsphy_g4_pcs,
+		.pcs_num	= ARRAY_SIZE(sm8550_ufsphy_g4_pcs),
+	},
+	.tbls_hs_max = {
+		.serdes		= sm8550_ufsphy_g5_serdes,
+		.serdes_num	= ARRAY_SIZE(sm8550_ufsphy_g5_serdes),
+		.rx		= sm8550_ufsphy_g5_rx,
+		.rx_num		= ARRAY_SIZE(sm8550_ufsphy_g5_rx),
+		.pcs		= sm8550_ufsphy_g5_pcs,
+		.pcs_num	= ARRAY_SIZE(sm8550_ufsphy_g5_pcs),
+	},
 	.clk_list		= sdm845_ufs_phy_clk_l,
 	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
@@ -1232,17 +1293,36 @@ static void qmp_ufs_pcs_init(struct qmp_ufs *qmp, const struct qmp_phy_cfg_tbls
 	qmp_ufs_configure(pcs, tbls->pcs, tbls->pcs_num);
 }
 
-static void qmp_ufs_init_registers(struct qmp_ufs *qmp, const struct qmp_phy_cfg *cfg)
+static int qmp_ufs_init_registers(struct qmp_ufs *qmp, const struct qmp_phy_cfg *cfg)
 {
+	if (qmp->submode > cfg->max_hs_gear) {
+		dev_err(qmp->dev, "PHY submode %u exceeds maximum supported gear %u\n",
+			qmp->submode, cfg->max_hs_gear);
+		return -EINVAL;
+	}
+
 	qmp_ufs_serdes_init(qmp, &cfg->tbls);
+	if (qmp->submode == cfg->max_hs_gear)
+		qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_max);
+	else
+		qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_not_max);
+
 	if (qmp->mode == PHY_MODE_UFS_HS_B)
 		qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_b);
+
 	qmp_ufs_lanes_init(qmp, &cfg->tbls);
 	if (qmp->submode == cfg->max_hs_gear)
 		qmp_ufs_lanes_init(qmp, &cfg->tbls_hs_max);
+	else
+		qmp_ufs_lanes_init(qmp, &cfg->tbls_hs_not_max);
+
 	qmp_ufs_pcs_init(qmp, &cfg->tbls);
 	if (qmp->submode == cfg->max_hs_gear)
 		qmp_ufs_pcs_init(qmp, &cfg->tbls_hs_max);
+	else
+		qmp_ufs_pcs_init(qmp, &cfg->tbls_hs_not_max);
+
+	return 0;
 }
 
 static int qmp_ufs_com_init(struct qmp_ufs *qmp)
@@ -1334,7 +1414,9 @@ static int qmp_ufs_power_on(struct phy *phy)
 	unsigned int val;
 	int ret;
 
-	qmp_ufs_init_registers(qmp, cfg);
+	ret = qmp_ufs_init_registers(qmp, cfg);
+	if (ret)
+		return ret;
 
 	ret = reset_control_deassert(qmp->ufs_reset);
 	if (ret)
-- 
2.7.4

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