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Message-ID: <6497767c-1527-5c22-8f0f-8ac2f1ebbbb4@gmail.com>
Date: Mon, 15 Feb 2021 18:27:15 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: Bjarni Jonasson <bjarni.jonasson@...rochip.com>,
Andrew Lunn <andrew@...n.ch>,
Russell King <linux@...linux.org.uk>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Antoine Tenart <atenart@...nel.org>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <vladimir.oltean@....com>,
Ioana Ciornei <ioana.ciornei@....com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
UNGLinuxDriver <UNGLinuxDriver@...rochip.com>,
Steen Hegelund <steen.hegelund@...rochip.com>
Subject: Re: [PATCH net-next v2 2/3] net: phy: mscc: improved serdes
calibration applied to VSC8514
On 15.02.2021 17:57, Bjarni Jonasson wrote:
> The current IB serdes calibration algorithm (performed by the onboard 8051)
> has proven to be unstable for the VSC8514 QSGMII phy.
> A new algorithm has been developed based on
> 'Frequency-offset Jittered-Injection' or 'FoJi' method which solves
> all known issues. This patch disables the 8051 algorithm and
> replaces it with the new FoJi algorithm.
> The calibration is now performed in the drive.
>
> Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
> Signed-off-by: Bjarni Jonasson <bjarni.jonasson@...rochip.com>
> Tested-by: Vladimir Oltean <vladimir.oltean@....com>
> Fixes: e4f9ba642f0b ("net: phy: mscc: add support for VSC8514 PHY.")
> ---
> v1 -> v2:
> Preserved reversed christmas tree
> Changed net to net-next
>
> drivers/net/phy/mscc/mscc.h | 23 +
> drivers/net/phy/mscc/mscc_main.c | 930 +++++++++++++++++++++++++------
> 2 files changed, 795 insertions(+), 158 deletions(-)
This is a massive workaround. Would it make sense to place it in a
separate source code file instead of polluting mscc_main.c?
This may improve maintainability.
>
> diff --git a/drivers/net/phy/mscc/mscc.h b/drivers/net/phy/mscc/mscc.h
> index c2023f93c0b2..9d8ee387739e 100644
> --- a/drivers/net/phy/mscc/mscc.h
> +++ b/drivers/net/phy/mscc/mscc.h
> @@ -113,6 +113,9 @@ enum rgmii_clock_delay {
> #define PHY_S6G_PLL_STATUS 0x31
> #define PHY_S6G_IB_STATUS0 0x2f
>
> +#define PHY_S6G_PLL5G_CFG2_GAIN_MASK GENMASK(9, 5)
> +#define PHY_S6G_PLL5G_CFG2_ENA_GAIN 1
> +
> #define PHY_S6G_SYS_RST_POS 31
> #define PHY_S6G_ENA_LANE_POS 18
> #define PHY_S6G_ENA_LOOP_POS 8
> @@ -125,6 +128,21 @@ enum rgmii_clock_delay {
> #define PHY_S6G_CFG2_FSM_DIS 1
> #define PHY_S6G_CFG2_FSM_CLK_BP 23
>
> +#define PHY_S6G_DES_PHY_CTRL_POS 13
> +#define PHY_S6G_DES_MBTR_CTRL_POS 10
> +#define PHY_S6G_DES_CPMD_SEL_POS 8
> +#define PHY_S6G_DES_BW_HYST_POS 5
> +#define PHY_S6G_DES_BW_ANA_POS 1
> +#define PHY_S6G_DES_CFG 0x21
> +#define PHY_S6G_IB_CFG0 0x22
> +#define PHY_S6G_IB_CFG1 0x23
> +#define PHY_S6G_IB_CFG2 0x24
> +#define PHY_S6G_IB_CFG3 0x25
> +#define PHY_S6G_IB_CFG4 0x26
> +#define PHY_S6G_GP_CFG 0x2E
> +#define PHY_S6G_DFT_CFG0 0x35
> +#define PHY_S6G_IB_DFT_CFG2 0x37
> +
> #define MSCC_EXT_PAGE_ACCESS 31
> #define MSCC_PHY_PAGE_STANDARD 0x0000 /* Standard registers */
> #define MSCC_PHY_PAGE_EXTENDED 0x0001 /* Extended registers */
> @@ -140,6 +158,7 @@ enum rgmii_clock_delay {
> #define MSCC_PHY_PAGE_1588 0x1588 /* PTP (1588) */
> #define MSCC_PHY_PAGE_TEST 0x2a30 /* Test reg */
> #define MSCC_PHY_PAGE_TR 0x52b5 /* Token ring registers */
> +#define MSCC_PHY_GPIO_CONTROL_2 14
>
> /* Extended Page 1 Registers */
> #define MSCC_PHY_CU_MEDIA_CRC_VALID_CNT 18
> @@ -339,6 +358,10 @@ enum rgmii_clock_delay {
> #define VSC8584_REVB 0x0001
> #define MSCC_DEV_REV_MASK GENMASK(3, 0)
>
> +#define MSCC_ROM_TRAP_SERDES_6G_CFG 0x1E48
> +#define MSCC_RAM_TRAP_SERDES_6G_CFG 0x1E4F
> +#define PATCH_VEC_ZERO_EN 0x0100
> +
> struct reg_val {
> u16 reg;
> u32 val;
> diff --git a/drivers/net/phy/mscc/mscc_main.c b/drivers/net/phy/mscc/mscc_main.c
> index 09650c3340a1..03181542bcb7 100644
> --- a/drivers/net/phy/mscc/mscc_main.c
> +++ b/drivers/net/phy/mscc/mscc_main.c
> @@ -1738,6 +1738,738 @@ static int vsc85xx_config_init(struct phy_device *phydev)
> return 0;
> }
>
> +static int __phy_write_mcb_s6g(struct phy_device *phydev, u32 reg, u8 mcb,
> + u32 op)
> +{
> + unsigned long deadline;
> + u32 val;
> + int ret;
> +
> + ret = vsc85xx_csr_write(phydev, PHY_MCB_TARGET, reg,
> + op | (1 << mcb));
> + if (ret)
> + return -EINVAL;
> +
> + deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS);
> + do {
> + usleep_range(500, 1000);
> + val = vsc85xx_csr_read(phydev, PHY_MCB_TARGET, reg);
> +
> + if (val == 0xffffffff)
> + return -EIO;
> +
> + } while (time_before(jiffies, deadline) && (val & op));
> +
> + if (val & op)
> + return -ETIMEDOUT;
> +
> + return 0;
> +}
> +
> +/* Trigger a read to the specified MCB */
> +static int phy_update_mcb_s6g(struct phy_device *phydev, u32 reg, u8 mcb)
> +{
> + return __phy_write_mcb_s6g(phydev, reg, mcb, PHY_MCB_S6G_READ);
> +}
> +
> +/* Trigger a write to the specified MCB */
> +static int phy_commit_mcb_s6g(struct phy_device *phydev, u32 reg, u8 mcb)
> +{
> + return __phy_write_mcb_s6g(phydev, reg, mcb, PHY_MCB_S6G_WRITE);
> +}
> +
> +static int pll5g_detune(struct phy_device *phydev)
> +{
> + u32 rd_dat;
> + int ret;
> +
> + rd_dat = vsc85xx_csr_read(phydev, MACRO_CTRL, PHY_S6G_PLL5G_CFG2);
> + rd_dat &= ~PHY_S6G_PLL5G_CFG2_GAIN_MASK;
> + rd_dat |= PHY_S6G_PLL5G_CFG2_ENA_GAIN;
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_PLL5G_CFG2, rd_dat);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int pll5g_tune(struct phy_device *phydev)
> +{
> + u32 rd_dat;
> + int ret;
> +
> + rd_dat = vsc85xx_csr_read(phydev, MACRO_CTRL, PHY_S6G_PLL5G_CFG2);
> + rd_dat &= ~PHY_S6G_PLL5G_CFG2_ENA_GAIN;
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_PLL5G_CFG2, rd_dat);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_pll_cfg_wr(struct phy_device *phydev,
> + const u32 pll_ena_offs,
> + const u32 pll_fsm_ctrl_data,
> + const u32 pll_fsm_ena)
> +{
> + int ret;
> +
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_PLL_CFG,
> + (pll_fsm_ena << PHY_S6G_PLL_ENA_OFFS_POS) |
> + (pll_fsm_ctrl_data << PHY_S6G_PLL_FSM_CTRL_DATA_POS) |
> + (pll_ena_offs << PHY_S6G_PLL_FSM_ENA_POS));
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_common_cfg_wr(struct phy_device *phydev,
> + const u32 sys_rst,
> + const u32 ena_lane,
> + const u32 ena_loop,
> + const u32 qrate,
> + const u32 if_mode,
> + const u32 pwd_tx)
> +{
> + /* ena_loop = 8 for eloop */
> + /* = 4 for floop */
> + /* = 2 for iloop */
> + /* = 1 for ploop */
> + /* qrate = 1 for SGMII, 0 for QSGMII */
> + /* if_mode = 1 for SGMII, 3 for QSGMII */
> +
> + int ret;
> +
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_COMMON_CFG,
> + (sys_rst << PHY_S6G_SYS_RST_POS) |
> + (ena_lane << PHY_S6G_ENA_LANE_POS) |
> + (ena_loop << PHY_S6G_ENA_LOOP_POS) |
> + (qrate << PHY_S6G_QRATE_POS) |
> + (if_mode << PHY_S6G_IF_MODE_POS));
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_des_cfg_wr(struct phy_device *phydev,
> + const u32 des_phy_ctrl,
> + const u32 des_mbtr_ctrl,
> + const u32 des_bw_hyst,
> + const u32 des_bw_ana,
> + const u32 des_cpmd_sel)
> +{
> + u32 reg_val;
> + int ret;
> +
> + /* configurable terms */
> + reg_val = (des_phy_ctrl << PHY_S6G_DES_PHY_CTRL_POS) |
> + (des_mbtr_ctrl << PHY_S6G_DES_MBTR_CTRL_POS) |
> + (des_cpmd_sel << PHY_S6G_DES_CPMD_SEL_POS) |
> + (des_bw_hyst << PHY_S6G_DES_BW_HYST_POS) |
> + (des_bw_ana << PHY_S6G_DES_BW_ANA_POS);
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_DES_CFG,
> + reg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_ib_cfg0_wr(struct phy_device *phydev,
> + const u32 ib_rtrm_adj,
> + const u32 ib_sig_det_clk_sel,
> + const u32 ib_reg_pat_sel_offset,
> + const u32 ib_cal_ena)
> +{
> + u32 base_val;
> + u32 reg_val;
> + int ret;
> +
> + /* constant terms */
> + base_val = 0x60a85837;
> + /* configurable terms */
> + reg_val = base_val | (ib_rtrm_adj << 25) |
> + (ib_sig_det_clk_sel << 16) |
> + (ib_reg_pat_sel_offset << 8) |
> + (ib_cal_ena << 3);
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_IB_CFG0,
> + reg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_ib_cfg1_wr(struct phy_device *phydev,
> + const u32 ib_tjtag,
> + const u32 ib_tsdet,
> + const u32 ib_scaly,
> + const u32 ib_frc_offset,
> + const u32 ib_filt_offset)
> +{
> + u32 ib_filt_val;
> + u32 reg_val = 0;
> + int ret;
> +
> + /* constant terms */
> + ib_filt_val = 0xe0;
> + /* configurable terms */
> + reg_val = (ib_tjtag << 17) + (ib_tsdet << 12) + (ib_scaly << 8) +
> + ib_filt_val + (ib_filt_offset << 4) + (ib_frc_offset << 0);
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_IB_CFG1,
> + reg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_ib_cfg2_wr(struct phy_device *phydev,
> + const u32 ib_tinfv,
> + const u32 ib_tcalv,
> + const u32 ib_ureg)
> +{
> + u32 ib_cfg2_val;
> + u32 base_val;
> + int ret;
> +
> + /* constant terms */
> + base_val = 0x0f878010;
> + /* configurable terms */
> + ib_cfg2_val = base_val | ((ib_tinfv) << 28) | ((ib_tcalv) << 5) |
> + (ib_ureg << 0);
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_IB_CFG2,
> + ib_cfg2_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_ib_cfg3_wr(struct phy_device *phydev,
> + const u32 ib_ini_hp,
> + const u32 ib_ini_mid,
> + const u32 ib_ini_lp,
> + const u32 ib_ini_offset)
> +{
> + u32 reg_val;
> + int ret;
> +
> + reg_val = (ib_ini_hp << 24) + (ib_ini_mid << 16) +
> + (ib_ini_lp << 8) + (ib_ini_offset << 0);
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_IB_CFG3,
> + reg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_ib_cfg4_wr(struct phy_device *phydev,
> + const u32 ib_max_hp,
> + const u32 ib_max_mid,
> + const u32 ib_max_lp,
> + const u32 ib_max_offset)
> +{
> + u32 reg_val;
> + int ret;
> +
> + reg_val = (ib_max_hp << 24) + (ib_max_mid << 16) +
> + (ib_max_lp << 8) + (ib_max_offset << 0);
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_IB_CFG4,
> + reg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_misc_cfg_wr(struct phy_device *phydev,
> + const u32 lane_rst)
> +{
> + int ret;
> +
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_MISC_CFG,
> + lane_rst);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_gp_cfg_wr(struct phy_device *phydev, const u32 gp_cfg_val)
> +{
> + int ret;
> +
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_GP_CFG,
> + gp_cfg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_dft_cfg2_wr(struct phy_device *phydev,
> + const u32 rx_ji_ampl,
> + const u32 rx_step_freq,
> + const u32 rx_ji_ena,
> + const u32 rx_waveform_sel,
> + const u32 rx_freqoff_dir,
> + const u32 rx_freqoff_ena)
> +{
> + u32 reg_val;
> + int ret;
> +
> + /* configurable terms */
> + reg_val = (rx_ji_ampl << 8) | (rx_step_freq << 4) |
> + (rx_ji_ena << 3) | (rx_waveform_sel << 2) |
> + (rx_freqoff_dir << 1) | rx_freqoff_ena;
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_IB_DFT_CFG2,
> + reg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_dft_cfg0_wr(struct phy_device *phydev,
> + const u32 prbs_sel,
> + const u32 test_mode,
> + const u32 rx_dft_ena)
> +{
> + u32 reg_val;
> + int ret;
> +
> + /* configurable terms */
> + reg_val = (prbs_sel << 20) | (test_mode << 16) | (rx_dft_ena << 2);
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_DFT_CFG0,
> + reg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +/* Access LCPLL Cfg_0 */
> +static int vsc85xx_pll5g_cfg0_wr(struct phy_device *phydev,
> + const u32 selbgv820)
> +{
> + u32 base_val;
> + u32 reg_val;
> + int ret;
> +
> + /* constant terms */
> + base_val = 0x7036f145;
> + /* configurable terms */
> + reg_val = base_val | (selbgv820 << 23);
> + ret = vsc85xx_csr_write(phydev, MACRO_CTRL,
> + PHY_S6G_PLL5G_CFG0, reg_val);
> + if (ret)
> + dev_err(&phydev->mdio.dev, "%s: write error\n", __func__);
> + return ret;
> +}
> +
> +static int vsc85xx_sd6g_config_v2(struct phy_device *phydev)
> +{
> + u32 ib_sig_det_clk_sel_cal = 0;
> + u32 ib_sig_det_clk_sel_mm = 7;
> + u32 pll_fsm_ctrl_data = 60;
> + unsigned long deadline;
> + u32 des_bw_ana_val = 3;
> + u32 ib_tsdet_cal = 16;
> + u32 ib_tsdet_mm = 5;
> + u32 ib_rtrm_adj;
> + u32 if_mode = 1;
> + u32 gp_iter = 5;
> + u32 val32 = 0;
> + u32 qrate = 1;
> + u32 iter;
> + int val = 0;
> + int ret;
> +
> + phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS, MSCC_PHY_PAGE_STANDARD);
> +
> + /* Detune/Unlock LCPLL */
> + ret = pll5g_detune(phydev);
> + if (ret)
> + return ret;
> +
> + /* 0. Reset RCPLL */
> + ret = vsc85xx_sd6g_pll_cfg_wr(phydev, 3, pll_fsm_ctrl_data, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_common_cfg_wr(phydev, 0, 0, 0, qrate, if_mode, 0);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_des_cfg_wr(phydev, 6, 2, 5, des_bw_ana_val, 0);
> + if (ret)
> + return ret;
> +
> + /* 1. Configure sd6g for SGMII prior to sd6g_IB_CAL */
> + ib_rtrm_adj = 13;
> + ret = vsc85xx_sd6g_ib_cfg0_wr(phydev, ib_rtrm_adj, ib_sig_det_clk_sel_mm, 0, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg1_wr(phydev, 8, ib_tsdet_mm, 15, 0, 1);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg2_wr(phydev, 3, 13, 5);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg3_wr(phydev, 0, 31, 1, 31);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg4_wr(phydev, 63, 63, 2, 63);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_common_cfg_wr(phydev, 1, 1, 0, qrate, if_mode, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_misc_cfg_wr(phydev, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 2. Start rcpll_fsm */
> + ret = vsc85xx_sd6g_pll_cfg_wr(phydev, 3, pll_fsm_ctrl_data, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS);
> + do {
> + usleep_range(500, 1000);
> + ret = phy_update_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + val32 = vsc85xx_csr_read(phydev, MACRO_CTRL,
> + PHY_S6G_PLL_STATUS);
> + /* wait for bit 12 to clear */
> + } while (time_before(jiffies, deadline) && (val32 & BIT(12)));
> +
> + if (val32 & BIT(12))
> + return -ETIMEDOUT;
> +
> + /* 4. Release digital reset and disable transmitter */
> + ret = vsc85xx_sd6g_misc_cfg_wr(phydev, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_common_cfg_wr(phydev, 1, 1, 0, qrate, if_mode, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 5. Apply a frequency offset on RX-side (using internal FoJi logic) */
> + ret = vsc85xx_sd6g_gp_cfg_wr(phydev, 768);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_dft_cfg2_wr(phydev, 0, 2, 0, 0, 0, 1);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_dft_cfg0_wr(phydev, 0, 0, 1);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_des_cfg_wr(phydev, 6, 2, 5, des_bw_ana_val, 2);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 6. Prepare required settings for IBCAL */
> + ret = vsc85xx_sd6g_ib_cfg1_wr(phydev, 8, ib_tsdet_cal, 15, 1, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg0_wr(phydev, ib_rtrm_adj, ib_sig_det_clk_sel_cal, 0, 0);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 7. Start IB_CAL */
> + ret = vsc85xx_sd6g_ib_cfg0_wr(phydev, ib_rtrm_adj,
> + ib_sig_det_clk_sel_cal, 0, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + /* 11 cycles (for ViperA) or 5 cycles (for ViperB & Elise) w/ SW clock */
> + for (iter = 0; iter < gp_iter; iter++) {
> + /* set gp(0) */
> + ret = vsc85xx_sd6g_gp_cfg_wr(phydev, 769);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + /* clear gp(0) */
> + ret = vsc85xx_sd6g_gp_cfg_wr(phydev, 768);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + }
> +
> + ret = vsc85xx_sd6g_ib_cfg1_wr(phydev, 8, ib_tsdet_cal, 15, 1, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg1_wr(phydev, 8, ib_tsdet_cal, 15, 0, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 8. Wait for IB cal to complete */
> + deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS);
> + do {
> + usleep_range(500, 1000);
> + ret = phy_update_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + val32 = vsc85xx_csr_read(phydev, MACRO_CTRL,
> + PHY_S6G_IB_STATUS0);
> + /* wait for bit 8 to set */
> + } while (time_before(jiffies, deadline) && (~val32 & BIT(8)));
> +
> + if (~val32 & BIT(8))
> + return -ETIMEDOUT;
> +
> + /* 9. Restore cfg values for mission mode */
> + ret = vsc85xx_sd6g_ib_cfg0_wr(phydev, ib_rtrm_adj, ib_sig_det_clk_sel_mm, 0, 1);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg1_wr(phydev, 8, ib_tsdet_mm, 15, 0, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 10. Re-enable transmitter */
> + ret = vsc85xx_sd6g_common_cfg_wr(phydev, 1, 1, 0, qrate, if_mode, 0);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 11. Disable frequency offset generation (using internal FoJi logic) */
> + ret = vsc85xx_sd6g_dft_cfg2_wr(phydev, 0, 0, 0, 0, 0, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_dft_cfg0_wr(phydev, 0, 0, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_des_cfg_wr(phydev, 6, 2, 5, des_bw_ana_val, 0);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* Tune/Re-lock LCPLL */
> + ret = pll5g_tune(phydev);
> + if (ret)
> + return ret;
> +
> + /* 12. Configure for Final Configuration and Settings */
> + /* a. Reset RCPLL */
> + ret = vsc85xx_sd6g_pll_cfg_wr(phydev, 3, pll_fsm_ctrl_data, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_common_cfg_wr(phydev, 0, 1, 0, qrate, if_mode, 0);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* b. Configure sd6g for desired operating mode */
> + phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS, MSCC_PHY_PAGE_EXTENDED_GPIO);
> + ret = phy_base_read(phydev, MSCC_PHY_MAC_CFG_FASTLINK);
> + if ((ret & MAC_CFG_MASK) == MAC_CFG_QSGMII) {
> + /* QSGMII */
> + pll_fsm_ctrl_data = 120;
> + qrate = 0;
> + if_mode = 3;
> + des_bw_ana_val = 5;
> + val = PROC_CMD_MCB_ACCESS_MAC_CONF | PROC_CMD_RST_CONF_PORT |
> + PROC_CMD_READ_MOD_WRITE_PORT | PROC_CMD_QSGMII_MAC;
> +
> + ret = vsc8584_cmd(phydev, val);
> + if (ret) {
> + dev_err(&phydev->mdio.dev, "%s: QSGMII error: %d\n",
> + __func__, ret);
> + return ret;
> + }
> +
> + phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS, MSCC_PHY_PAGE_STANDARD);
> + } else if ((ret & MAC_CFG_MASK) == MAC_CFG_SGMII) {
> + /* SGMII */
> + pll_fsm_ctrl_data = 60;
> + qrate = 1;
> + if_mode = 1;
> + des_bw_ana_val = 3;
> +
> + val = PROC_CMD_MCB_ACCESS_MAC_CONF | PROC_CMD_RST_CONF_PORT |
> + PROC_CMD_READ_MOD_WRITE_PORT | PROC_CMD_SGMII_MAC;
> +
> + ret = vsc8584_cmd(phydev, val);
> + if (ret) {
> + dev_err(&phydev->mdio.dev, "%s: SGMII error: %d\n",
> + __func__, ret);
> + return ret;
> + }
> +
> + phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS, MSCC_PHY_PAGE_STANDARD);
> + } else {
> + dev_err(&phydev->mdio.dev, "%s: invalid mac_if: %x\n",
> + __func__, ret);
> + }
> +
> + ret = phy_update_mcb_s6g(phydev, PHY_S6G_LCPLL_CFG, 0);
> + if (ret)
> + return ret;
> + ret = phy_update_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_pll5g_cfg0_wr(phydev, 4);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_S6G_LCPLL_CFG, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_des_cfg_wr(phydev, 6, 2, 5, des_bw_ana_val, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg0_wr(phydev, ib_rtrm_adj, ib_sig_det_clk_sel_mm, 0, 1);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg1_wr(phydev, 8, ib_tsdet_mm, 15, 0, 1);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_common_cfg_wr(phydev, 1, 1, 0, qrate, if_mode, 0);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg2_wr(phydev, 3, 13, 5);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg3_wr(phydev, 0, 31, 1, 31);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_ib_cfg4_wr(phydev, 63, 63, 2, 63);
> + if (ret)
> + return ret;
> + ret = vsc85xx_sd6g_misc_cfg_wr(phydev, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 13. Start rcpll_fsm */
> + ret = vsc85xx_sd6g_pll_cfg_wr(phydev, 3, pll_fsm_ctrl_data, 1);
> + if (ret)
> + return ret;
> + ret = phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> +
> + /* 14. Wait for PLL cal to complete */
> + deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS);
> + do {
> + usleep_range(500, 1000);
> + ret = phy_update_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> + if (ret)
> + return ret;
> + val32 = vsc85xx_csr_read(phydev, MACRO_CTRL,
> + PHY_S6G_PLL_STATUS);
> + /* wait for bit 12 to clear */
> + } while (time_before(jiffies, deadline) && (val32 & BIT(12)));
> +
> + if (val32 & BIT(12))
> + return -ETIMEDOUT;
> +
> + /* release lane reset */
> + ret = vsc85xx_sd6g_misc_cfg_wr(phydev, 0);
> + if (ret)
> + return ret;
> +
> + return phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> +}
> +
> +static int vsc8514_config_host_serdes(struct phy_device *phydev)
> +{
> + int ret;
> + u16 val;
> +
> + ret = phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS,
> + MSCC_PHY_PAGE_EXTENDED_GPIO);
> + if (ret)
> + return ret;
> +
> + val = phy_base_read(phydev, MSCC_PHY_MAC_CFG_FASTLINK);
> + val &= ~MAC_CFG_MASK;
> + val |= MAC_CFG_QSGMII;
> + ret = phy_base_write(phydev, MSCC_PHY_MAC_CFG_FASTLINK, val);
> + if (ret)
> + return ret;
> +
> + ret = phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS,
> + MSCC_PHY_PAGE_STANDARD);
> + if (ret)
> + return ret;
> +
> + ret = vsc8584_cmd(phydev, PROC_CMD_NOP);
> + if (ret)
> + return ret;
> +
> + ret = vsc8584_cmd(phydev,
> + PROC_CMD_MCB_ACCESS_MAC_CONF |
> + PROC_CMD_RST_CONF_PORT |
> + PROC_CMD_READ_MOD_WRITE_PORT | PROC_CMD_QSGMII_MAC);
> + if (ret) {
> + dev_err(&phydev->mdio.dev, "%s: QSGMII error: %d\n",
> + __func__, ret);
> + return ret;
> + }
> +
> + /* Apply 6G SerDes FOJI Algorithm
> + * Initial condition requirement:
> + * 1. hold 8051 in reset
> + * 2. disable patch vector 0, in order to allow IB cal poll during FoJi
> + * 3. deassert 8051 reset after change patch vector status
> + * 4. proceed with FoJi (vsc85xx_sd6g_config_v2)
> + */
> + vsc8584_micro_assert_reset(phydev);
> + val = phy_base_read(phydev, MSCC_INT_MEM_CNTL);
> + /* clear bit 8, to disable patch vector 0 */
> + val &= ~PATCH_VEC_ZERO_EN;
> + ret = phy_base_write(phydev, MSCC_INT_MEM_CNTL, val);
> + /* Enable 8051 clock, don't set patch present, disable PRAM clock override */
> + vsc8584_micro_deassert_reset(phydev, false);
> +
> + return vsc85xx_sd6g_config_v2(phydev);
> +}
> +
> static int vsc8514_config_pre_init(struct phy_device *phydev)
> {
> /* These are the settings to override the silicon default
> @@ -1807,56 +2539,48 @@ static int vsc8514_config_pre_init(struct phy_device *phydev)
> reg &= ~SMI_BROADCAST_WR_EN;
> phy_base_write(phydev, MSCC_PHY_EXT_CNTL_STATUS, reg);
>
> - return 0;
> -}
> -
> -static int __phy_write_mcb_s6g(struct phy_device *phydev, u32 reg, u8 mcb,
> - u32 op)
> -{
> - unsigned long deadline;
> - u32 val;
> - int ret;
> + /* Add pre-patching commands to:
> + * 1. enable 8051 clock, operate 8051 clock at 125 MHz
> + * instead of HW default 62.5MHz
> + * 2. write patch vector 0, to skip IB cal polling executed
> + * as part of the 0x80E0 ROM command
> + */
> + vsc8584_micro_deassert_reset(phydev, false);
>
> - ret = vsc85xx_csr_write(phydev, PHY_MCB_TARGET, reg,
> - op | (1 << mcb));
> + vsc8584_micro_assert_reset(phydev);
> + phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS,
> + MSCC_PHY_PAGE_EXTENDED_GPIO);
> + /* ROM address to trap, for patch vector 0 */
> + reg = MSCC_ROM_TRAP_SERDES_6G_CFG;
> + ret = phy_base_write(phydev, MSCC_TRAP_ROM_ADDR(1), reg);
> if (ret)
> - return -EINVAL;
> -
> - deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS);
> - do {
> - usleep_range(500, 1000);
> - val = vsc85xx_csr_read(phydev, PHY_MCB_TARGET, reg);
> -
> - if (val == 0xffffffff)
> - return -EIO;
> -
> - } while (time_before(jiffies, deadline) && (val & op));
> -
> - if (val & op)
> - return -ETIMEDOUT;
> -
> - return 0;
> -}
> -
> -/* Trigger a read to the specified MCB */
> -static int phy_update_mcb_s6g(struct phy_device *phydev, u32 reg, u8 mcb)
> -{
> - return __phy_write_mcb_s6g(phydev, reg, mcb, PHY_MCB_S6G_READ);
> -}
> + goto err;
> + /* RAM address to jump to, when patch vector 0 enabled */
> + reg = MSCC_RAM_TRAP_SERDES_6G_CFG;
> + ret = phy_base_write(phydev, MSCC_PATCH_RAM_ADDR(1), reg);
> + if (ret)
> + goto err;
> + reg = phy_base_read(phydev, MSCC_INT_MEM_CNTL);
> + reg |= PATCH_VEC_ZERO_EN; /* bit 8, enable patch vector 0 */
> + ret = phy_base_write(phydev, MSCC_INT_MEM_CNTL, reg);
> + if (ret)
> + goto err;
>
> -/* Trigger a write to the specified MCB */
> -static int phy_commit_mcb_s6g(struct phy_device *phydev, u32 reg, u8 mcb)
> -{
> - return __phy_write_mcb_s6g(phydev, reg, mcb, PHY_MCB_S6G_WRITE);
> + /* Enable 8051 clock, don't set patch present
> + * yet, disable PRAM clock override
> + */
> + vsc8584_micro_deassert_reset(phydev, false);
> + return ret;
> + err:
> + /* restore 8051 and bail w error */
> + vsc8584_micro_deassert_reset(phydev, false);
> + return ret;
> }
>
> static int vsc8514_config_init(struct phy_device *phydev)
> {
> struct vsc8531_private *vsc8531 = phydev->priv;
> - unsigned long deadline;
> int ret, i;
> - u16 val;
> - u32 reg;
>
> phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
>
> @@ -1873,123 +2597,13 @@ static int vsc8514_config_init(struct phy_device *phydev)
> * do the correct init sequence for all PHYs that are package-critical
> * in this pre-init function.
> */
> - if (phy_package_init_once(phydev))
> - vsc8514_config_pre_init(phydev);
> -
> - ret = phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS,
> - MSCC_PHY_PAGE_EXTENDED_GPIO);
> - if (ret)
> - goto err;
> -
> - val = phy_base_read(phydev, MSCC_PHY_MAC_CFG_FASTLINK);
> -
> - val &= ~MAC_CFG_MASK;
> - val |= MAC_CFG_QSGMII;
> - ret = phy_base_write(phydev, MSCC_PHY_MAC_CFG_FASTLINK, val);
> - if (ret)
> - goto err;
> -
> - ret = phy_base_write(phydev, MSCC_EXT_PAGE_ACCESS,
> - MSCC_PHY_PAGE_STANDARD);
> - if (ret)
> - goto err;
> -
> - ret = vsc8584_cmd(phydev,
> - PROC_CMD_MCB_ACCESS_MAC_CONF |
> - PROC_CMD_RST_CONF_PORT |
> - PROC_CMD_READ_MOD_WRITE_PORT | PROC_CMD_QSGMII_MAC);
> - if (ret)
> - goto err;
> -
> - /* 6g mcb */
> - phy_update_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> - /* lcpll mcb */
> - phy_update_mcb_s6g(phydev, PHY_S6G_LCPLL_CFG, 0);
> - /* pll5gcfg0 */
> - ret = vsc85xx_csr_write(phydev, PHY_MCB_TARGET,
> - PHY_S6G_PLL5G_CFG0, 0x7036f145);
> - if (ret)
> - goto err;
> -
> - phy_commit_mcb_s6g(phydev, PHY_S6G_LCPLL_CFG, 0);
> - /* pllcfg */
> - ret = vsc85xx_csr_write(phydev, PHY_MCB_TARGET,
> - PHY_S6G_PLL_CFG,
> - (3 << PHY_S6G_PLL_ENA_OFFS_POS) |
> - (120 << PHY_S6G_PLL_FSM_CTRL_DATA_POS)
> - | (0 << PHY_S6G_PLL_FSM_ENA_POS));
> - if (ret)
> - goto err;
> -
> - /* commoncfg */
> - ret = vsc85xx_csr_write(phydev, PHY_MCB_TARGET,
> - PHY_S6G_COMMON_CFG,
> - (0 << PHY_S6G_SYS_RST_POS) |
> - (0 << PHY_S6G_ENA_LANE_POS) |
> - (0 << PHY_S6G_ENA_LOOP_POS) |
> - (0 << PHY_S6G_QRATE_POS) |
> - (3 << PHY_S6G_IF_MODE_POS));
> - if (ret)
> - goto err;
> -
> - /* misccfg */
> - ret = vsc85xx_csr_write(phydev, PHY_MCB_TARGET,
> - PHY_S6G_MISC_CFG, 1);
> - if (ret)
> - goto err;
> -
> - /* gpcfg */
> - ret = vsc85xx_csr_write(phydev, PHY_MCB_TARGET,
> - PHY_S6G_GPC_CFG, 768);
> - if (ret)
> - goto err;
> -
> - phy_commit_mcb_s6g(phydev, PHY_S6G_DFT_CFG2, 0);
> -
> - deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS);
> - do {
> - usleep_range(500, 1000);
> - phy_update_mcb_s6g(phydev, PHY_MCB_S6G_CFG,
> - 0); /* read 6G MCB into CSRs */
> - reg = vsc85xx_csr_read(phydev, PHY_MCB_TARGET,
> - PHY_S6G_PLL_STATUS);
> - if (reg == 0xffffffff) {
> - phy_unlock_mdio_bus(phydev);
> - return -EIO;
> - }
> -
> - } while (time_before(jiffies, deadline) && (reg & BIT(12)));
> -
> - if (reg & BIT(12)) {
> - phy_unlock_mdio_bus(phydev);
> - return -ETIMEDOUT;
> - }
> -
> - /* misccfg */
> - ret = vsc85xx_csr_write(phydev, PHY_MCB_TARGET,
> - PHY_S6G_MISC_CFG, 0);
> - if (ret)
> - goto err;
> -
> - phy_commit_mcb_s6g(phydev, PHY_MCB_S6G_CFG, 0);
> -
> - deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS);
> - do {
> - usleep_range(500, 1000);
> - phy_update_mcb_s6g(phydev, PHY_MCB_S6G_CFG,
> - 0); /* read 6G MCB into CSRs */
> - reg = vsc85xx_csr_read(phydev, PHY_MCB_TARGET,
> - PHY_S6G_IB_STATUS0);
> - if (reg == 0xffffffff) {
> - phy_unlock_mdio_bus(phydev);
> - return -EIO;
> - }
> -
> - } while (time_before(jiffies, deadline) && !(reg & BIT(8)));
> -
> - if (!(reg & BIT(8))) {
> - phy_unlock_mdio_bus(phydev);
> - return -ETIMEDOUT;
> + if (phy_package_init_once(phydev)) {
> + ret = vsc8514_config_pre_init(phydev);
> + if (ret)
> + goto err;
> + ret = vsc8514_config_host_serdes(phydev);
> + if (ret)
> + goto err;
> }
>
> phy_unlock_mdio_bus(phydev);
>
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