Re: [PATCH v2 6/7] phy: qualcomm: phy-qcom-qmp-ufs: Add High Speed Gear 5 support for SM8550

From: Dmitry Baryshkov
Date: Wed Nov 08 2023 - 01:56:37 EST

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On Wed, 8 Nov 2023 at 07:49, Manivannan Sadhasivam <mani@xxxxxxxxxx> wrote:
>
> On Tue, Nov 07, 2023 at 03:18:09PM +0200, Dmitry Baryshkov wrote:
> > On Tue, 7 Nov 2023 at 06:47, Can Guo <cang@xxxxxxxxxxxxxxxx> wrote:
> > >
> > > From: Can Guo <quic_cang@xxxxxxxxxxx>
> > >
> > > 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. In order to add HS-G5 support for SM8550, we
> > > need to split the two sets into their dedicated tables, and leave only the
> > > common settings in the .tlbs. To have the PHY programmed with the correct
> > > set of PHY settings, the submode passed to PHY driver must be either HS-G4
> > > or HS-G5.
> > >
>
> You should also mention that this issue is also present in G4 supported targets.
> And a note that it will get fixed later.
>
> > > Signed-off-by: Can Guo <quic_cang@xxxxxxxxxxx>
> > > ---
> > > 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 | 12 +++
> > > drivers/phy/qualcomm/phy-qcom-qmp-ufs.c | 112 ++++++++++++++++++---
> > > 4 files changed, 115 insertions(+), 13 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 15bcb4b..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
> > > @@ -10,10 +10,20 @@
> > > #define QSERDES_UFS_V6_TX_RES_CODE_LANE_RX 0x2c
> > > #define QSERDES_UFS_V6_TX_RES_CODE_LANE_OFFSET_TX 0x30
> > > #define QSERDES_UFS_V6_TX_RES_CODE_LANE_OFFSET_RX 0x34
> > > +#define QSERDES_UFS_V6_TX_LANE_MODE_1 0x7c
> > > +#define QSERDES_UFS_V6_TX_FR_DCC_CTRL 0x108
> > >
> > > #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
> > > @@ -25,6 +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 3927eba..e0a01497 100644
> > > --- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> > > +++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> > > @@ -649,32 +649,51 @@ 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),
> > > - QMP_PHY_INIT_CFG(QSERDES_V6_COM_DEC_START_MODE0, 0x4c),
> > > +};
> > > +
> > > +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_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, 0x99),
> > > - QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP2_MODE0, 0x07),
> >
> > Aside from moving these registers to the HS_G4 table, you are also
> > changing these registers. It makes me think that there was an error in
> > the original programming sequence.
> > If that is correct, could you please split the patch into two pieces:
> > - Fix programming sequence (add proper Fixes tags)
> > - Split G4 and G5 tables.
>
> Ack
>
> >
> > > +
> > > + 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),
> > > + QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_CCTRL_MODE1, 0x14),
> > > + QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP1_MODE1, 0x99),
> > > + QMP_PHY_INIT_CFG(QSERDES_V6_COM_LOCK_CMP2_MODE1, 0x07),
> >
> > I see all the MODE1 registers being only present in G4 and G5 tables.
> > Should they be programmed for the modes lower than G4?
> >
>
> We use G4 table for all the modes <= G4.

Could you please point me how it's handled?
In the patch I see just:

if (qmp->submode == UFS_HS_G4)
qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_g4);
else if (qmp->submode == UFS_HS_G5)
qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_g5);

Which looks like two special cases (HS_G4 and HS_G5) and nothing for
anything else.

>
> > > +};
> > > +
> > > +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_V6_TX_LANE_MODE_1, 0x05),
> > > + 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_FASTLOCK_FO_GAIN_RATE2, 0x0c),
> > > - QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FASTLOCK_FO_GAIN_RATE4, 0x0f),
> > > - QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_VGA_CAL_MAN_VAL, 0x0e),
> > > + QMP_PHY_INIT_CFG(QSERDES_UFS_V6_RX_UCDR_FO_GAIN_RATE2, 0x0c),
> > >
> > > 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),
> > > @@ -690,14 +709,46 @@ 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;
> > > @@ -731,6 +782,8 @@ struct qmp_phy_cfg {
> > > const struct qmp_phy_cfg_tbls tbls_hs_b;
> > > /* Additional sequence for HS G4 */
> > > const struct qmp_phy_cfg_tbls tbls_hs_g4;
> > > + /* Additional sequence for HS G4 */
>
> HS G5
>
> > > + const struct qmp_phy_cfg_tbls tbls_hs_g5;
> > >
> > > /* clock ids to be requested */
> > > const char * const *clk_list;
> > > @@ -1157,6 +1210,28 @@ static const struct qmp_phy_cfg sm8550_ufsphy_cfg = {
> > > .pcs = sm8550_ufsphy_pcs,
> > > .pcs_num = ARRAY_SIZE(sm8550_ufsphy_pcs),
> > > },
> > > + .tbls_hs_b = {
> > > + .serdes = sm8550_ufsphy_hs_b_serdes,
> > > + .serdes_num = ARRAY_SIZE(sm8550_ufsphy_hs_b_serdes),
> > > + },
> > > + .tbls_hs_g4 = {
> > > + .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_g5 = {
> > > + .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,
> > > @@ -1222,14 +1297,25 @@ static void qmp_ufs_pcs_init(struct qmp_ufs *qmp, const struct qmp_phy_cfg_tbls
> > > static void qmp_ufs_init_registers(struct qmp_ufs *qmp, const struct qmp_phy_cfg *cfg)
> > > {
> > > qmp_ufs_serdes_init(qmp, &cfg->tbls);
> > > + if (qmp->submode == UFS_HS_G4)
> > > + qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_g4);
> > > + else if (qmp->submode == UFS_HS_G5)
> > > + qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_g5);
> > > +
>
> Should we program submode sequence after HS_B?
>
> - Mani
>
> --
> மணிவண்ணன் சதாசிவம்

--
With best wishes
Dmitry

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