[PATCH v5 07/20] phy: cadence: Add driver for Sierra PHY

Kishon Vijay Abraham I
2021-07-21T16:00:37Z

From: Alan Douglas <adouglas@cadence.com>

Add a Sierra PHY driver with PCIe and USB support.
This driver is a port from the mainline linux driver.

The PHY has multiple lanes, which can be configured into
groups, and a generic PHY device is created for each group.

There are two resets controlling the overall PHY block, one
to enable the APB interface for programming registers, and
another to enable the PHY itself. Additionally there are
resets for each PHY lane.

The PHY can be configured in hardware to read register
settings from ROM, or they can be written by the driver.

The sequence of operation on startup is to enable the APB
bus, write the PHY registers (if required) for each lane
group, and then enable the PHY. Each group of lanes
can then be individually controlled using the power_on()/
power_off() function for that generic PHY

One difference with the linux driver is that the PHY is
always reset after it is powered-on. This is because role
switching is not supported in u-boot and the cable
orientation is handled by the PHY reset.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Alan Douglas <adouglas@cadence.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
---
drivers/phy/Kconfig | 2 +
drivers/phy/Makefile | 1 +
drivers/phy/cadence/Kconfig | 5 +
drivers/phy/cadence/Makefile | 1 +
drivers/phy/cadence/phy-cadence-sierra.c | 751 +++++++++++++++++++++++
5 files changed, 760 insertions(+)
create mode 100644 drivers/phy/cadence/Kconfig
create mode 100644 drivers/phy/cadence/Makefile
create mode 100644 drivers/phy/cadence/phy-cadence-sierra.c

diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 008186a10d..9208e430a6 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -269,4 +269,6 @@ config PHY_MTK_TPHY
so you can easily distinguish them by banks layout.

source "drivers/phy/rockchip/Kconfig"
+source "drivers/phy/cadence/Kconfig"
+
endmenu
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 3c4a673a83..4736c5eadb 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -31,3 +31,4 @@ obj-$(CONFIG_MT7620_USB_PHY) += mt7620-usb-phy.o
obj-$(CONFIG_MT76X8_USB_PHY) += mt76x8-usb-phy.o
obj-$(CONFIG_PHY_DA8XX_USB) += phy-da8xx-usb.o
obj-$(CONFIG_PHY_MTK_TPHY) += phy-mtk-tphy.o
+obj-y += cadence/
diff --git a/drivers/phy/cadence/Kconfig b/drivers/phy/cadence/Kconfig
new file mode 100644
index 0000000000..18a04819f5
--- /dev/null
+++ b/drivers/phy/cadence/Kconfig
@@ -0,0 +1,5 @@
+config PHY_CADENCE_SIERRA
+ tristate "Cadence Sierra PHY Driver"
+ depends on DM_RESET
+ help
+ Enable this to support the Cadence Sierra PHY driver
diff --git a/drivers/phy/cadence/Makefile b/drivers/phy/cadence/Makefile
new file mode 100644
index 0000000000..d57856152a
--- /dev/null
+++ b/drivers/phy/cadence/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_$(SPL_)PHY_CADENCE_SIERRA) += phy-cadence-sierra.o
diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
new file mode 100644
index 0000000000..715def6f17
--- /dev/null
+++ b/drivers/phy/cadence/phy-cadence-sierra.c
@@ -0,0 +1,751 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Cadence Sierra PHY Driver
+ *
+ * Based on the linux driver provided by Cadence
+ *
+ * Copyright (c) 2018 Cadence Design Systems
+ * Author: Alan Douglas <adouglas@cadence.com>
+ *
+ * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
+ * Jean-Jacques Hiblot <jjhiblot@ti.com>
+ *
+ */
+#include <common.h>
+#include <clk.h>
+#include <generic-phy.h>
+#include <reset.h>
+#include <dm/device.h>
+#include <dm/device-internal.h>
+#include <dm/device_compat.h>
+#include <dm/lists.h>
+#include <dm/read.h>
+#include <dm/uclass.h>
+#include <dm/devres.h>
+#include <linux/io.h>
+#include <dt-bindings/phy/phy.h>
+#include <regmap.h>
+
+/* PHY register offsets */
+#define SIERRA_COMMON_CDB_OFFSET 0x0
+#define SIERRA_MACRO_ID_REG 0x0
+#define SIERRA_CMN_PLLLC_MODE_PREG 0x48
+#define SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG 0x49
+#define SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG 0x4A
+#define SIERRA_CMN_PLLLC_LOCK_CNTSTART_PREG 0x4B
+#define SIERRA_CMN_PLLLC_BWCAL_MODE1_PREG 0x4F
+#define SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG 0x50
+#define SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG 0x62
+
+#define SIERRA_LANE_CDB_OFFSET(ln, offset) \
+ (0x4000 + ((ln) * (0x800 >> (2 - (offset)))))
+
+#define SIERRA_DET_STANDEC_A_PREG 0x000
+#define SIERRA_DET_STANDEC_B_PREG 0x001
+#define SIERRA_DET_STANDEC_C_PREG 0x002
+#define SIERRA_DET_STANDEC_D_PREG 0x003
+#define SIERRA_DET_STANDEC_E_PREG 0x004
+#define SIERRA_PSM_LANECAL_DLY_A1_RESETS_PREG 0x008
+#define SIERRA_PSM_A0IN_TMR_PREG 0x009
+#define SIERRA_PSM_DIAG_PREG 0x015
+#define SIERRA_PSC_TX_A0_PREG 0x028
+#define SIERRA_PSC_TX_A1_PREG 0x029
+#define SIERRA_PSC_TX_A2_PREG 0x02A
+#define SIERRA_PSC_TX_A3_PREG 0x02B
+#define SIERRA_PSC_RX_A0_PREG 0x030
+#define SIERRA_PSC_RX_A1_PREG 0x031
+#define SIERRA_PSC_RX_A2_PREG 0x032
+#define SIERRA_PSC_RX_A3_PREG 0x033
+#define SIERRA_PLLCTRL_SUBRATE_PREG 0x03A
+#define SIERRA_PLLCTRL_GEN_D_PREG 0x03E
+#define SIERRA_PLLCTRL_CPGAIN_MODE_PREG 0x03F
+#define SIERRA_PLLCTRL_STATUS_PREG 0x044
+#define SIERRA_CLKPATH_BIASTRIM_PREG 0x04B
+#define SIERRA_DFE_BIASTRIM_PREG 0x04C
+#define SIERRA_DRVCTRL_ATTEN_PREG 0x06A
+#define SIERRA_CLKPATHCTRL_TMR_PREG 0x081
+#define SIERRA_RX_CREQ_FLTR_A_MODE3_PREG 0x085
+#define SIERRA_RX_CREQ_FLTR_A_MODE2_PREG 0x086
+#define SIERRA_RX_CREQ_FLTR_A_MODE1_PREG 0x087
+#define SIERRA_RX_CREQ_FLTR_A_MODE0_PREG 0x088
+#define SIERRA_CREQ_CCLKDET_MODE01_PREG 0x08E
+#define SIERRA_RX_CTLE_MAINTENANCE_PREG 0x091
+#define SIERRA_CREQ_FSMCLK_SEL_PREG 0x092
+#define SIERRA_CREQ_EQ_CTRL_PREG 0x093
+#define SIERRA_CREQ_SPARE_PREG 0x096
+#define SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG 0x097
+#define SIERRA_CTLELUT_CTRL_PREG 0x098
+#define SIERRA_DFE_ECMP_RATESEL_PREG 0x0C0
+#define SIERRA_DFE_SMP_RATESEL_PREG 0x0C1
+#define SIERRA_DEQ_PHALIGN_CTRL 0x0C4
+#define SIERRA_DEQ_CONCUR_CTRL1_PREG 0x0C8
+#define SIERRA_DEQ_CONCUR_CTRL2_PREG 0x0C9
+#define SIERRA_DEQ_EPIPWR_CTRL2_PREG 0x0CD
+#define SIERRA_DEQ_FAST_MAINT_CYCLES_PREG 0x0CE
+#define SIERRA_DEQ_ERRCMP_CTRL_PREG 0x0D0
+#define SIERRA_DEQ_OFFSET_CTRL_PREG 0x0D8
+#define SIERRA_DEQ_GAIN_CTRL_PREG 0x0E0
+#define SIERRA_DEQ_VGATUNE_CTRL_PREG 0x0E1
+#define SIERRA_DEQ_GLUT0 0x0E8
+#define SIERRA_DEQ_GLUT1 0x0E9
+#define SIERRA_DEQ_GLUT2 0x0EA
+#define SIERRA_DEQ_GLUT3 0x0EB
+#define SIERRA_DEQ_GLUT4 0x0EC
+#define SIERRA_DEQ_GLUT5 0x0ED
+#define SIERRA_DEQ_GLUT6 0x0EE
+#define SIERRA_DEQ_GLUT7 0x0EF
+#define SIERRA_DEQ_GLUT8 0x0F0
+#define SIERRA_DEQ_GLUT9 0x0F1
+#define SIERRA_DEQ_GLUT10 0x0F2
+#define SIERRA_DEQ_GLUT11 0x0F3
+#define SIERRA_DEQ_GLUT12 0x0F4
+#define SIERRA_DEQ_GLUT13 0x0F5
+#define SIERRA_DEQ_GLUT14 0x0F6
+#define SIERRA_DEQ_GLUT15 0x0F7
+#define SIERRA_DEQ_GLUT16 0x0F8
+#define SIERRA_DEQ_ALUT0 0x108
+#define SIERRA_DEQ_ALUT1 0x109
+#define SIERRA_DEQ_ALUT2 0x10A
+#define SIERRA_DEQ_ALUT3 0x10B
+#define SIERRA_DEQ_ALUT4 0x10C
+#define SIERRA_DEQ_ALUT5 0x10D
+#define SIERRA_DEQ_ALUT6 0x10E
+#define SIERRA_DEQ_ALUT7 0x10F
+#define SIERRA_DEQ_ALUT8 0x110
+#define SIERRA_DEQ_ALUT9 0x111
+#define SIERRA_DEQ_ALUT10 0x112
+#define SIERRA_DEQ_ALUT11 0x113
+#define SIERRA_DEQ_ALUT12 0x114
+#define SIERRA_DEQ_ALUT13 0x115
+#define SIERRA_DEQ_DFETAP_CTRL_PREG 0x128
+#define SIERRA_DFE_EN_1010_IGNORE_PREG 0x134
+#define SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG 0x150
+#define SIERRA_DEQ_TAU_CTRL2_PREG 0x151
+#define SIERRA_DEQ_PICTRL_PREG 0x161
+#define SIERRA_CPICAL_TMRVAL_MODE1_PREG 0x170
+#define SIERRA_CPICAL_TMRVAL_MODE0_PREG 0x171
+#define SIERRA_CPICAL_PICNT_MODE1_PREG 0x174
+#define SIERRA_CPI_OUTBUF_RATESEL_PREG 0x17C
+#define SIERRA_CPICAL_RES_STARTCODE_MODE23_PREG 0x183
+#define SIERRA_LFPSDET_SUPPORT_PREG 0x188
+#define SIERRA_LFPSFILT_NS_PREG 0x18A
+#define SIERRA_LFPSFILT_RD_PREG 0x18B
+#define SIERRA_LFPSFILT_MP_PREG 0x18C
+#define SIERRA_SIGDET_SUPPORT_PREG 0x190
+#define SIERRA_SDFILT_H2L_A_PREG 0x191
+#define SIERRA_SDFILT_L2H_PREG 0x193
+#define SIERRA_RXBUFFER_CTLECTRL_PREG 0x19E
+#define SIERRA_RXBUFFER_RCDFECTRL_PREG 0x19F
+#define SIERRA_RXBUFFER_DFECTRL_PREG 0x1A0
+#define SIERRA_DEQ_TAU_CTRL1_FAST_MAINT_PREG 0x14F
+#define SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG 0x150
+
+#define SIERRA_PHY_CONFIG_CTRL_OFFSET 0xc000
+#define SIERRA_PHY_PLL_CFG 0xe
+
+#define SIERRA_MACRO_ID 0x00007364
+#define SIERRA_MAX_LANES 16
+#define PLL_LOCK_TIME 100
+
+static const struct reg_field macro_id_type =
+ REG_FIELD(SIERRA_MACRO_ID_REG, 0, 15);
+static const struct reg_field phy_pll_cfg_1 =
+ REG_FIELD(SIERRA_PHY_PLL_CFG, 1, 1);
+static const struct reg_field pllctrl_lock =
+ REG_FIELD(SIERRA_PLLCTRL_STATUS_PREG, 0, 0);
+
+#define reset_control_assert(rst) cdns_reset_assert(rst)
+#define reset_control_deassert(rst) cdns_reset_deassert(rst)
+#define reset_control reset_ctl
+
+struct cdns_sierra_inst {
+ u32 phy_type;
+ u32 num_lanes;
+ u32 mlane;
+ struct reset_ctl_bulk *lnk_rst;
+};
+
+struct cdns_reg_pairs {
+ u16 val;
+ u32 off;
+};
+
+struct cdns_sierra_data {
+ u32 id_value;
+ u8 block_offset_shift;
+ u8 reg_offset_shift;
+ u32 pcie_cmn_regs;
+ u32 pcie_ln_regs;
+ u32 usb_cmn_regs;
+ u32 usb_ln_regs;
+ struct cdns_reg_pairs *pcie_cmn_vals;
+ struct cdns_reg_pairs *pcie_ln_vals;
+ struct cdns_reg_pairs *usb_cmn_vals;
+ struct cdns_reg_pairs *usb_ln_vals;
+};
+
+struct cdns_regmap_cdb_context {
+ struct udevice *dev;
+ void __iomem *base;
+ u8 reg_offset_shift;
+};
+
+struct cdns_sierra_phy {
+ struct udevice *dev;
+ void *base;
+ size_t size;
+ struct regmap *regmap;
+ struct cdns_sierra_data *init_data;
+ struct cdns_sierra_inst phys[SIERRA_MAX_LANES];
+ struct reset_control *phy_rst;
+ struct regmap *regmap_lane_cdb[SIERRA_MAX_LANES];
+ struct regmap *regmap_phy_config_ctrl;
+ struct regmap *regmap_common_cdb;
+ struct regmap_field *macro_id_type;
+ struct regmap_field *phy_pll_cfg_1;
+ struct regmap_field *pllctrl_lock[SIERRA_MAX_LANES];
+ struct clk *clk;
+ struct clk *cmn_refclk;
+ struct clk *cmn_refclk1;
+ int nsubnodes;
+ u32 num_lanes;
+ bool autoconf;
+};
+
+static inline int cdns_reset_assert(struct reset_control *rst)
+{
+ if (rst)
+ return reset_assert(rst);
+ else
+ return 0;
+}
+
+static inline int cdns_reset_deassert(struct reset_control *rst)
+{
+ if (rst)
+ return reset_deassert(rst);
+ else
+ return 0;
+}
+
+static inline struct cdns_sierra_inst *phy_get_drvdata(struct phy *phy)
+{
+ struct cdns_sierra_phy *sp = dev_get_priv(phy->dev);
+ int index;
+
+ if (phy->id >= SIERRA_MAX_LANES)
+ return NULL;
+
+ for (index = 0; index < sp->nsubnodes; index++) {
+ if (phy->id == sp->phys[index].mlane)
+ return &sp->phys[index];
+ }
+
+ return NULL;
+}
+
+static int cdns_sierra_phy_init(struct phy *gphy)
+{
+ struct cdns_sierra_inst *ins = phy_get_drvdata(gphy);
+ struct cdns_sierra_phy *phy = dev_get_priv(gphy->dev);
+ struct regmap *regmap = phy->regmap;
+ int i, j;
+ struct cdns_reg_pairs *cmn_vals, *ln_vals;
+ u32 num_cmn_regs, num_ln_regs;
+
+ /* Initialise the PHY registers, unless auto configured */
+ if (phy->autoconf)
+ return 0;
+
+ clk_set_rate(phy->cmn_refclk, 25000000);
+ clk_set_rate(phy->cmn_refclk1, 25000000);
+
+ if (ins->phy_type == PHY_TYPE_PCIE) {
+ num_cmn_regs = phy->init_data->pcie_cmn_regs;
+ num_ln_regs = phy->init_data->pcie_ln_regs;
+ cmn_vals = phy->init_data->pcie_cmn_vals;
+ ln_vals = phy->init_data->pcie_ln_vals;
+ } else if (ins->phy_type == PHY_TYPE_USB3) {
+ num_cmn_regs = phy->init_data->usb_cmn_regs;
+ num_ln_regs = phy->init_data->usb_ln_regs;
+ cmn_vals = phy->init_data->usb_cmn_vals;
+ ln_vals = phy->init_data->usb_ln_vals;
+ } else {
+ return -EINVAL;
+ }
+
+ regmap = phy->regmap_common_cdb;
+ for (j = 0; j < num_cmn_regs ; j++)
+ regmap_write(regmap, cmn_vals[j].off, cmn_vals[j].val);
+
+ for (i = 0; i < ins->num_lanes; i++) {
+ for (j = 0; j < num_ln_regs ; j++) {
+ regmap = phy->regmap_lane_cdb[i + ins->mlane];
+ regmap_write(regmap, ln_vals[j].off, ln_vals[j].val);
+ }
+ }
+
+ return 0;
+}
+
+static int cdns_sierra_phy_on(struct phy *gphy)
+{
+ struct cdns_sierra_inst *ins = phy_get_drvdata(gphy);
+ struct cdns_sierra_phy *sp = dev_get_priv(gphy->dev);
+ struct udevice *dev = gphy->dev;
+ u32 val;
+ int ret;
+
+ /* Take the PHY lane group out of reset */
+ ret = reset_deassert_bulk(ins->lnk_rst);
+ if (ret) {
+ dev_err(dev, "Failed to take the PHY lane out of reset\n");
+ return ret;
+ }
+
+ ret = regmap_field_read_poll_timeout(sp->pllctrl_lock[ins->mlane],
+ val, val, 1000, PLL_LOCK_TIME);
+ if (ret < 0)
+ dev_err(dev, "PLL lock of lane failed\n");
+
+ reset_control_assert(sp->phy_rst);
+ reset_control_deassert(sp->phy_rst);
+
+ return ret;
+}
+
+static int cdns_sierra_phy_off(struct phy *gphy)
+{
+ struct cdns_sierra_inst *ins = phy_get_drvdata(gphy);
+
+ return reset_assert_bulk(ins->lnk_rst);
+}
+
+static int cdns_sierra_phy_reset(struct phy *gphy)
+{
+ struct cdns_sierra_phy *sp = dev_get_priv(gphy->dev);
+
+ reset_control_assert(sp->phy_rst);
+ reset_control_deassert(sp->phy_rst);
+ return 0;
+};
+
+static const struct phy_ops ops = {
+ .init = cdns_sierra_phy_init,
+ .power_on = cdns_sierra_phy_on,
+ .power_off = cdns_sierra_phy_off,
+ .reset = cdns_sierra_phy_reset,
+};
+
+static int cdns_sierra_get_optional(struct cdns_sierra_inst *inst,
+ ofnode child)
+{
+ if (ofnode_read_u32(child, "reg", &inst->mlane))
+ return -EINVAL;
+
+ if (ofnode_read_u32(child, "cdns,num-lanes", &inst->num_lanes))
+ return -EINVAL;
+
+ if (ofnode_read_u32(child, "cdns,phy-type", &inst->phy_type))
+ return -EINVAL;
+
+ return 0;
+}
+
+static struct regmap *cdns_regmap_init(struct udevice *dev, void __iomem *base,
+ u32 block_offset, u8 block_offset_shift,
+ u8 reg_offset_shift)
+{
+ struct cdns_sierra_phy *sp = dev_get_priv(dev);
+ struct regmap_config config;
+
+ config.r_start = (ulong)(base + (block_offset << block_offset_shift));
+ config.r_size = sp->size - (block_offset << block_offset_shift);
+ config.reg_offset_shift = reg_offset_shift;
+ config.width = REGMAP_SIZE_16;
+
+ return devm_regmap_init(dev, NULL, NULL, &config);
+}
+
+static int cdns_regfield_init(struct cdns_sierra_phy *sp)
+{
+ struct udevice *dev = sp->dev;
+ struct regmap_field *field;
+ struct regmap *regmap;
+ int i;
+
+ regmap = sp->regmap_common_cdb;
+ field = devm_regmap_field_alloc(dev, regmap, macro_id_type);
+ if (IS_ERR(field)) {
+ dev_err(dev, "MACRO_ID_TYPE reg field init failed\n");
+ return PTR_ERR(field);
+ }
+ sp->macro_id_type = field;
+
+ regmap = sp->regmap_phy_config_ctrl;
+ field = devm_regmap_field_alloc(dev, regmap, phy_pll_cfg_1);
+ if (IS_ERR(field)) {
+ dev_err(dev, "PHY_PLL_CFG_1 reg field init failed\n");
+ return PTR_ERR(field);
+ }
+ sp->phy_pll_cfg_1 = field;
+
+ for (i = 0; i < SIERRA_MAX_LANES; i++) {
+ regmap = sp->regmap_lane_cdb[i];
+ field = devm_regmap_field_alloc(dev, regmap, pllctrl_lock);
+ if (IS_ERR(field)) {
+ dev_err(dev, "P%d_ENABLE reg field init failed\n", i);
+ return PTR_ERR(field);
+ }
+ sp->pllctrl_lock[i] = field;
+ }
+
+ return 0;
+}
+
+static int cdns_regmap_init_blocks(struct cdns_sierra_phy *sp,
+ void __iomem *base, u8 block_offset_shift,
+ u8 reg_offset_shift)
+{
+ struct udevice *dev = sp->dev;
+ struct regmap *regmap;
+ u32 block_offset;
+ int i;
+
+ for (i = 0; i < SIERRA_MAX_LANES; i++) {
+ block_offset = SIERRA_LANE_CDB_OFFSET(i, reg_offset_shift);
+ regmap = cdns_regmap_init(dev, base, block_offset,
+ block_offset_shift, reg_offset_shift);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "Failed to init lane CDB regmap\n");
+ return PTR_ERR(regmap);
+ }
+ sp->regmap_lane_cdb[i] = regmap;
+ }
+
+ regmap = cdns_regmap_init(dev, base, SIERRA_COMMON_CDB_OFFSET,
+ block_offset_shift, reg_offset_shift);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "Failed to init common CDB regmap\n");
+ return PTR_ERR(regmap);
+ }
+ sp->regmap_common_cdb = regmap;
+
+ regmap = cdns_regmap_init(dev, base, SIERRA_PHY_CONFIG_CTRL_OFFSET,
+ block_offset_shift, reg_offset_shift);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "Failed to init PHY config and control regmap\n");
+ return PTR_ERR(regmap);
+ }
+ sp->regmap_phy_config_ctrl = regmap;
+
+ return 0;
+}
+
+static int cdns_sierra_phy_probe(struct udevice *dev)
+{
+ struct cdns_sierra_phy *sp = dev_get_priv(dev);
+ struct cdns_sierra_data *data;
+ unsigned int id_value;
+ int ret, node = 0;
+ struct clk *clk;
+ ofnode child;
+
+ sp->dev = dev;
+
+ sp->base = devfdt_remap_addr_index(dev, 0);
+ if (!sp->base) {
+ dev_err(dev, "unable to map regs\n");
+ return -ENOMEM;
+ }
+ devfdt_get_addr_size_index(dev, 0, (fdt_size_t *)&sp->size);
+
+ /* Get init data for this PHY */
+ data = (struct cdns_sierra_data *)dev_get_driver_data(dev);
+ sp->init_data = data;
+
+ ret = cdns_regmap_init_blocks(sp, sp->base, data->block_offset_shift,
+ data->reg_offset_shift);
+ if (ret)
+ return ret;
+
+ ret = cdns_regfield_init(sp);
+ if (ret)
+ return ret;
+
+ sp->clk = devm_clk_get_optional(dev, "phy_clk");
+ if (IS_ERR(sp->clk)) {
+ dev_err(dev, "failed to get clock phy_clk\n");
+ return PTR_ERR(sp->clk);
+ }
+
+ sp->phy_rst = devm_reset_control_get(dev, "sierra_reset");
+ if (IS_ERR(sp->phy_rst)) {
+ dev_err(dev, "failed to get reset\n");
+ return PTR_ERR(sp->phy_rst);
+ }
+
+ clk = devm_clk_get_optional(dev, "cmn_refclk_dig_div");
+ if (IS_ERR(clk)) {
+ dev_err(dev, "cmn_refclk clock not found\n");
+ ret = PTR_ERR(clk);
+ return ret;
+ }
+ sp->cmn_refclk = clk;
+
+ clk = devm_clk_get_optional(dev, "cmn_refclk1_dig_div");
+ if (IS_ERR(clk)) {
+ dev_err(dev, "cmn_refclk1 clock not found\n");
+ ret = PTR_ERR(clk);
+ return ret;
+ }
+ sp->cmn_refclk1 = clk;
+
+ ret = clk_prepare_enable(sp->clk);
+ if (ret)
+ return ret;
+
+ /* Check that PHY is present */
+ regmap_field_read(sp->macro_id_type, &id_value);
+ if (sp->init_data->id_value != id_value) {
+ dev_err(dev, "PHY not found 0x%x vs 0x%x\n",
+ sp->init_data->id_value, id_value);
+ ret = -EINVAL;
+ goto clk_disable;
+ }
+
+ sp->autoconf = dev_read_bool(dev, "cdns,autoconf");
+
+ ofnode_for_each_subnode(child, dev_ofnode(dev)) {
+ sp->phys[node].lnk_rst = devm_reset_bulk_get_by_node(dev,
+ child);
+ if (IS_ERR(sp->phys[node].lnk_rst)) {
+ ret = PTR_ERR(sp->phys[node].lnk_rst);
+ dev_err(dev, "failed to get reset %s\n",
+ ofnode_get_name(child));
+ goto put_child2;
+ }
+
+ if (!sp->autoconf) {
+ ret = cdns_sierra_get_optional(&sp->phys[node], child);
+ if (ret) {
+ dev_err(dev, "missing property in node %s\n",
+ ofnode_get_name(child));
+ goto put_child;
+ }
+ }
+ sp->num_lanes += sp->phys[node].num_lanes;
+
+ node++;
+ }
+ sp->nsubnodes = node;
+
+ /* If more than one subnode, configure the PHY as multilink */
+ if (!sp->autoconf && sp->nsubnodes > 1)
+ regmap_field_write(sp->phy_pll_cfg_1, 0x1);
+
+ reset_control_deassert(sp->phy_rst);
+ dev_info(dev, "sierra probed\n");
+ return 0;
+
+put_child:
+ node++;
+put_child2:
+
+clk_disable:
+ clk_disable_unprepare(sp->clk);
+ return ret;
+}
+
+static int cdns_sierra_phy_remove(struct udevice *dev)
+{
+ struct cdns_sierra_phy *phy = dev_get_priv(dev);
+ int i;
+
+ reset_control_assert(phy->phy_rst);
+
+ /*
+ * The device level resets will be put automatically.
+ * Need to put the subnode resets here though.
+ */
+ for (i = 0; i < phy->nsubnodes; i++)
+ reset_assert_bulk(phy->phys[i].lnk_rst);
+
+ return 0;
+}
+
+/* refclk100MHz_32b_PCIe_cmn_pll_ext_ssc */
+static struct cdns_reg_pairs cdns_pcie_cmn_regs_ext_ssc[] = {
+ {0x2106, SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG},
+ {0x2106, SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG},
+ {0x8A06, SIERRA_CMN_PLLLC_BWCAL_MODE1_PREG},
+ {0x8A06, SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG},
+ {0x1B1B, SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG}
+};
+
+/* refclk100MHz_32b_PCIe_ln_ext_ssc */
+static struct cdns_reg_pairs cdns_pcie_ln_regs_ext_ssc[] = {
+ {0x813E, SIERRA_CLKPATHCTRL_TMR_PREG},
+ {0x8047, SIERRA_RX_CREQ_FLTR_A_MODE3_PREG},
+ {0x808F, SIERRA_RX_CREQ_FLTR_A_MODE2_PREG},
+ {0x808F, SIERRA_RX_CREQ_FLTR_A_MODE1_PREG},
+ {0x808F, SIERRA_RX_CREQ_FLTR_A_MODE0_PREG},
+ {0x033C, SIERRA_RX_CTLE_MAINTENANCE_PREG},
+ {0x44CC, SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG}
+};
+
+/* refclk100MHz_20b_USB_cmn_pll_ext_ssc */
+static struct cdns_reg_pairs cdns_usb_cmn_regs_ext_ssc[] = {
+ {0x2085, SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG},
+ {0x2085, SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG},
+ {0x0000, SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG},
+ {0x0000, SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG}
+};
+
+/* refclk100MHz_20b_USB_ln_ext_ssc */
+static struct cdns_reg_pairs cdns_usb_ln_regs_ext_ssc[] = {
+ {0xFE0A, SIERRA_DET_STANDEC_A_PREG},
+ {0x000F, SIERRA_DET_STANDEC_B_PREG},
+ {0x00A5, SIERRA_DET_STANDEC_C_PREG},
+ {0x69ad, SIERRA_DET_STANDEC_D_PREG},
+ {0x0241, SIERRA_DET_STANDEC_E_PREG},
+ {0x0010, SIERRA_PSM_LANECAL_DLY_A1_RESETS_PREG},
+ {0x0014, SIERRA_PSM_A0IN_TMR_PREG},
+ {0xCF00, SIERRA_PSM_DIAG_PREG},
+ {0x001F, SIERRA_PSC_TX_A0_PREG},
+ {0x0007, SIERRA_PSC_TX_A1_PREG},
+ {0x0003, SIERRA_PSC_TX_A2_PREG},
+ {0x0003, SIERRA_PSC_TX_A3_PREG},
+ {0x0FFF, SIERRA_PSC_RX_A0_PREG},
+ {0x0619, SIERRA_PSC_RX_A1_PREG},
+ {0x0003, SIERRA_PSC_RX_A2_PREG},
+ {0x0001, SIERRA_PSC_RX_A3_PREG},
+ {0x0001, SIERRA_PLLCTRL_SUBRATE_PREG},
+ {0x0406, SIERRA_PLLCTRL_GEN_D_PREG},
+ {0x5233, SIERRA_PLLCTRL_CPGAIN_MODE_PREG},
+ {0x00CA, SIERRA_CLKPATH_BIASTRIM_PREG},
+ {0x2512, SIERRA_DFE_BIASTRIM_PREG},
+ {0x0000, SIERRA_DRVCTRL_ATTEN_PREG},
+ {0x873E, SIERRA_CLKPATHCTRL_TMR_PREG},
+ {0x03CF, SIERRA_RX_CREQ_FLTR_A_MODE1_PREG},
+ {0x01CE, SIERRA_RX_CREQ_FLTR_A_MODE0_PREG},
+ {0x7B3C, SIERRA_CREQ_CCLKDET_MODE01_PREG},
+ {0x033F, SIERRA_RX_CTLE_MAINTENANCE_PREG},
+ {0x3232, SIERRA_CREQ_FSMCLK_SEL_PREG},
+ {0x0000, SIERRA_CREQ_EQ_CTRL_PREG},
+ {0x8000, SIERRA_CREQ_SPARE_PREG},
+ {0xCC44, SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG},
+ {0x8453, SIERRA_CTLELUT_CTRL_PREG},
+ {0x4110, SIERRA_DFE_ECMP_RATESEL_PREG},
+ {0x4110, SIERRA_DFE_SMP_RATESEL_PREG},
+ {0x0002, SIERRA_DEQ_PHALIGN_CTRL},
+ {0x3200, SIERRA_DEQ_CONCUR_CTRL1_PREG},
+ {0x5064, SIERRA_DEQ_CONCUR_CTRL2_PREG},
+ {0x0030, SIERRA_DEQ_EPIPWR_CTRL2_PREG},
+ {0x0048, SIERRA_DEQ_FAST_MAINT_CYCLES_PREG},
+ {0x5A5A, SIERRA_DEQ_ERRCMP_CTRL_PREG},
+ {0x02F5, SIERRA_DEQ_OFFSET_CTRL_PREG},
+ {0x02F5, SIERRA_DEQ_GAIN_CTRL_PREG},
+ {0x9A8A, SIERRA_DEQ_VGATUNE_CTRL_PREG},
+ {0x0014, SIERRA_DEQ_GLUT0},
+ {0x0014, SIERRA_DEQ_GLUT1},
+ {0x0014, SIERRA_DEQ_GLUT2},
+ {0x0014, SIERRA_DEQ_GLUT3},
+ {0x0014, SIERRA_DEQ_GLUT4},
+ {0x0014, SIERRA_DEQ_GLUT5},
+ {0x0014, SIERRA_DEQ_GLUT6},
+ {0x0014, SIERRA_DEQ_GLUT7},
+ {0x0014, SIERRA_DEQ_GLUT8},
+ {0x0014, SIERRA_DEQ_GLUT9},
+ {0x0014, SIERRA_DEQ_GLUT10},
+ {0x0014, SIERRA_DEQ_GLUT11},
+ {0x0014, SIERRA_DEQ_GLUT12},
+ {0x0014, SIERRA_DEQ_GLUT13},
+ {0x0014, SIERRA_DEQ_GLUT14},
+ {0x0014, SIERRA_DEQ_GLUT15},
+ {0x0014, SIERRA_DEQ_GLUT16},
+ {0x0BAE, SIERRA_DEQ_ALUT0},
+ {0x0AEB, SIERRA_DEQ_ALUT1},
+ {0x0A28, SIERRA_DEQ_ALUT2},
+ {0x0965, SIERRA_DEQ_ALUT3},
+ {0x08A2, SIERRA_DEQ_ALUT4},
+ {0x07DF, SIERRA_DEQ_ALUT5},
+ {0x071C, SIERRA_DEQ_ALUT6},
+ {0x0659, SIERRA_DEQ_ALUT7},
+ {0x0596, SIERRA_DEQ_ALUT8},
+ {0x0514, SIERRA_DEQ_ALUT9},
+ {0x0492, SIERRA_DEQ_ALUT10},
+ {0x0410, SIERRA_DEQ_ALUT11},
+ {0x038E, SIERRA_DEQ_ALUT12},
+ {0x030C, SIERRA_DEQ_ALUT13},
+ {0x03F4, SIERRA_DEQ_DFETAP_CTRL_PREG},
+ {0x0001, SIERRA_DFE_EN_1010_IGNORE_PREG},
+ {0x3C01, SIERRA_DEQ_TAU_CTRL1_FAST_MAINT_PREG},
+ {0x3C40, SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG},
+ {0x1C08, SIERRA_DEQ_TAU_CTRL2_PREG},
+ {0x0033, SIERRA_DEQ_PICTRL_PREG},
+ {0x0400, SIERRA_CPICAL_TMRVAL_MODE1_PREG},
+ {0x0330, SIERRA_CPICAL_TMRVAL_MODE0_PREG},
+ {0x01FF, SIERRA_CPICAL_PICNT_MODE1_PREG},
+ {0x0009, SIERRA_CPI_OUTBUF_RATESEL_PREG},
+ {0x3232, SIERRA_CPICAL_RES_STARTCODE_MODE23_PREG},
+ {0x0005, SIERRA_LFPSDET_SUPPORT_PREG},
+ {0x000F, SIERRA_LFPSFILT_NS_PREG},
+ {0x0009, SIERRA_LFPSFILT_RD_PREG},
+ {0x0001, SIERRA_LFPSFILT_MP_PREG},
+ {0x8013, SIERRA_SDFILT_H2L_A_PREG},
+ {0x8009, SIERRA_SDFILT_L2H_PREG},
+ {0x0024, SIERRA_RXBUFFER_CTLECTRL_PREG},
+ {0x0020, SIERRA_RXBUFFER_RCDFECTRL_PREG},
+ {0x4243, SIERRA_RXBUFFER_DFECTRL_PREG}
+};
+
+static const struct cdns_sierra_data cdns_map_sierra = {
+ SIERRA_MACRO_ID,
+ 0x2,
+ 0x2,
+ ARRAY_SIZE(cdns_pcie_cmn_regs_ext_ssc),
+ ARRAY_SIZE(cdns_pcie_ln_regs_ext_ssc),
+ ARRAY_SIZE(cdns_usb_cmn_regs_ext_ssc),
+ ARRAY_SIZE(cdns_usb_ln_regs_ext_ssc),
+ cdns_pcie_cmn_regs_ext_ssc,
+ cdns_pcie_ln_regs_ext_ssc,
+ cdns_usb_cmn_regs_ext_ssc,
+ cdns_usb_ln_regs_ext_ssc,
+};
+
+static const struct cdns_sierra_data cdns_ti_map_sierra = {
+ SIERRA_MACRO_ID,
+ 0x0,
+ 0x1,
+ ARRAY_SIZE(cdns_pcie_cmn_regs_ext_ssc),
+ ARRAY_SIZE(cdns_pcie_ln_regs_ext_ssc),
+ ARRAY_SIZE(cdns_usb_cmn_regs_ext_ssc),
+ ARRAY_SIZE(cdns_usb_ln_regs_ext_ssc),
+ cdns_pcie_cmn_regs_ext_ssc,
+ cdns_pcie_ln_regs_ext_ssc,
+ cdns_usb_cmn_regs_ext_ssc,
+ cdns_usb_ln_regs_ext_ssc,
+};
+
+static const struct udevice_id cdns_sierra_id_table[] = {
+ {
+ .compatible = "cdns,sierra-phy-t0",
+ .data = (ulong)&cdns_map_sierra,
+ },
+ {
+ .compatible = "ti,sierra-phy-t0",
+ .data = (ulong)&cdns_ti_map_sierra,
+ },
+ {}
+};
+
+U_BOOT_DRIVER(sierra_phy_provider) = {
+ .name = "cdns,sierra",
+ .id = UCLASS_PHY,
+ .of_match = cdns_sierra_id_table,
+ .probe = cdns_sierra_phy_probe,
+ .remove = cdns_sierra_phy_remove,
+ .ops = &ops,
+ .priv_auto = sizeof(struct cdns_sierra_phy),
+};
--
2.17.1