@@ -4,6 +4,7 @@
obj-$(CONFIG_MICROSEMI_PHY) := mscc.o
mscc-objs := mscc_main.o
+mscc-objs += mscc_serdes.o
ifdef CONFIG_MACSEC
mscc-objs += mscc_macsec.o
@@ -339,6 +339,10 @@ 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;
@@ -420,6 +424,18 @@ enum csr_target {
MACRO_CTRL = 0x07,
};
+u32 vsc85xx_csr_read(struct phy_device *phydev,
+ enum csr_target target, u32 reg);
+
+int vsc85xx_csr_write(struct phy_device *phydev,
+ enum csr_target target, u32 reg, u32 val);
+
+int phy_base_write(struct phy_device *phydev, u32 regnum, u16 val);
+int phy_base_read(struct phy_device *phydev, u32 regnum);
+int phy_update_mcb_s6g(struct phy_device *phydev, u32 reg, u8 mcb);
+int phy_commit_mcb_s6g(struct phy_device *phydev, u32 reg, u8 mcb);
+int vsc8584_cmd(struct phy_device *phydev, u16 val);
+
#if IS_ENABLED(CONFIG_MACSEC)
int vsc8584_macsec_init(struct phy_device *phydev);
void vsc8584_handle_macsec_interrupt(struct phy_device *phydev);
@@ -17,7 +17,7 @@
#include <linux/of.h>
#include <linux/netdevice.h>
#include <dt-bindings/net/mscc-phy-vsc8531.h>
-
+#include "mscc_serdes.h"
#include "mscc.h"
static const struct vsc85xx_hw_stat vsc85xx_hw_stats[] = {
@@ -689,7 +689,7 @@ static int vsc85xx_eee_init_seq_set(struct phy_device *phydev)
}
/* phydev->bus->mdio_lock should be locked when using this function */
-static int phy_base_write(struct phy_device *phydev, u32 regnum, u16 val)
+int phy_base_write(struct phy_device *phydev, u32 regnum, u16 val)
{
if (unlikely(!mutex_is_locked(&phydev->mdio.bus->mdio_lock))) {
dev_err(&phydev->mdio.dev, "MDIO bus lock not held!\n");
@@ -700,7 +700,7 @@ static int phy_base_write(struct phy_device *phydev, u32 regnum, u16 val)
}
/* phydev->bus->mdio_lock should be locked when using this function */
-static int phy_base_read(struct phy_device *phydev, u32 regnum)
+int phy_base_read(struct phy_device *phydev, u32 regnum)
{
if (unlikely(!mutex_is_locked(&phydev->mdio.bus->mdio_lock))) {
dev_err(&phydev->mdio.dev, "MDIO bus lock not held!\n");
@@ -710,8 +710,8 @@ static int phy_base_read(struct phy_device *phydev, u32 regnum)
return __phy_package_read(phydev, regnum);
}
-static u32 vsc85xx_csr_read(struct phy_device *phydev,
- enum csr_target target, u32 reg)
+u32 vsc85xx_csr_read(struct phy_device *phydev,
+ enum csr_target target, u32 reg)
{
unsigned long deadline;
u32 val, val_l, val_h;
@@ -764,8 +764,8 @@ static u32 vsc85xx_csr_read(struct phy_device *phydev,
return (val_h << 16) | val_l;
}
-static int vsc85xx_csr_write(struct phy_device *phydev,
- enum csr_target target, u32 reg, u32 val)
+int vsc85xx_csr_write(struct phy_device *phydev,
+ enum csr_target target, u32 reg, u32 val)
{
unsigned long deadline;
@@ -826,7 +826,7 @@ static void vsc8584_csr_write(struct phy_device *phydev, u16 addr, u32 val)
}
/* bus->mdio_lock should be locked when using this function */
-static int vsc8584_cmd(struct phy_device *phydev, u16 val)
+int vsc8584_cmd(struct phy_device *phydev, u16 val)
{
unsigned long deadline;
u16 reg_val;
@@ -1734,6 +1734,100 @@ 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 */
+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 */
+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 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
@@ -1803,56 +1897,48 @@ 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;
@@ -1869,123 +1955,13 @@ 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);
new file mode 100644
@@ -0,0 +1,650 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Driver for Microsemi VSC85xx PHYs
+ *
+ * Author: Bjarni Jonasson <bjarni.jonassoni@microchip.com>
+ * License: Dual MIT/GPL
+ * Copyright (c) 2021 Microsemi Corporation
+ */
+
+#include <linux/phy.h>
+#include "mscc_serdes.h"
+#include "mscc.h"
+
+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;
+}
+
+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);
+}
new file mode 100644
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
+/*
+ * Driver for Microsemi VSC85xx PHYs
+ *
+ * Copyright (c) 2021 Microsemi Corporation
+ */
+
+#ifndef _MSCC_SERDES_PHY_H_
+#define _MSCC_SERDES_PHY_H_
+
+#define PHY_S6G_PLL5G_CFG2_GAIN_MASK GENMASK(9, 5)
+#define PHY_S6G_PLL5G_CFG2_ENA_GAIN 1
+
+#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
+
+int vsc85xx_sd6g_config_v2(struct phy_device *phydev);
+
+#endif /* _MSCC_PHY_SERDES_H_ */
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 a new file (mscc_serdes.c), which can act as an placeholder for future serdes configurations. Fixes: e4f9ba642f0b ("net: phy: mscc: add support for VSC8514 PHY.") Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com> Signed-off-by: Bjarni Jonasson <bjarni.jonasson@microchip.com> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- drivers/net/phy/mscc/Makefile | 1 + drivers/net/phy/mscc/mscc.h | 16 + drivers/net/phy/mscc/mscc_main.c | 308 +++++++------- drivers/net/phy/mscc/mscc_serdes.c | 650 +++++++++++++++++++++++++++++ drivers/net/phy/mscc/mscc_serdes.h | 31 ++ 5 files changed, 840 insertions(+), 166 deletions(-) create mode 100644 drivers/net/phy/mscc/mscc_serdes.c create mode 100644 drivers/net/phy/mscc/mscc_serdes.h