diff options
Diffstat (limited to 'drivers/phy/ti/phy-j721e-wiz.c')
| -rw-r--r-- | drivers/phy/ti/phy-j721e-wiz.c | 1156 |
1 files changed, 1156 insertions, 0 deletions
diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c new file mode 100644 index 0000000000..d74efcd212 --- /dev/null +++ b/drivers/phy/ti/phy-j721e-wiz.c @@ -0,0 +1,1156 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/ + * Jean-Jacques Hiblot <jjhiblot@ti.com> + */ + +#include <common.h> +#include <clk-uclass.h> +#include <dm.h> +#include <dm/device_compat.h> +#include <asm/gpio.h> +#include <dm/lists.h> +#include <dm/device-internal.h> +#include <regmap.h> +#include <reset-uclass.h> +#include <dt-bindings/phy/phy.h> + +#include <dt-bindings/phy/phy-ti.h> + +#define WIZ_MAX_INPUT_CLOCKS 4 +/* To include mux clocks, divider clocks and gate clocks */ +#define WIZ_MAX_OUTPUT_CLOCKS 32 + +#define WIZ_MAX_LANES 4 +#define WIZ_MUX_NUM_CLOCKS 3 +#define WIZ_DIV_NUM_CLOCKS_16G 2 +#define WIZ_DIV_NUM_CLOCKS_10G 1 + +#define WIZ_SERDES_CTRL 0x404 +#define WIZ_SERDES_TOP_CTRL 0x408 +#define WIZ_SERDES_RST 0x40c +#define WIZ_SERDES_TYPEC 0x410 +#define WIZ_LANECTL(n) (0x480 + (0x40 * (n))) +#define WIZ_LANEDIV(n) (0x484 + (0x40 * (n))) + +#define WIZ_MAX_LANES 4 +#define WIZ_MUX_NUM_CLOCKS 3 +#define WIZ_DIV_NUM_CLOCKS_16G 2 +#define WIZ_DIV_NUM_CLOCKS_10G 1 + +#define WIZ_SERDES_TYPEC_LN10_SWAP BIT(30) + +enum wiz_lane_standard_mode { + LANE_MODE_GEN1, + LANE_MODE_GEN2, + LANE_MODE_GEN3, + LANE_MODE_GEN4, +}; + +enum wiz_refclk_mux_sel { + PLL0_REFCLK, + PLL1_REFCLK, + REFCLK_DIG, +}; + +enum wiz_refclk_div_sel { + CMN_REFCLK, + CMN_REFCLK1, +}; + +enum wiz_clock_input { + WIZ_CORE_REFCLK, + WIZ_EXT_REFCLK, + WIZ_CORE_REFCLK1, + WIZ_EXT_REFCLK1, +}; + +static const struct reg_field por_en = REG_FIELD(WIZ_SERDES_CTRL, 31, 31); +static const struct reg_field phy_reset_n = REG_FIELD(WIZ_SERDES_RST, 31, 31); +static const struct reg_field pll1_refclk_mux_sel = + REG_FIELD(WIZ_SERDES_RST, 29, 29); +static const struct reg_field pll0_refclk_mux_sel = + REG_FIELD(WIZ_SERDES_RST, 28, 28); +static const struct reg_field refclk_dig_sel_16g = + REG_FIELD(WIZ_SERDES_RST, 24, 25); +static const struct reg_field refclk_dig_sel_10g = + REG_FIELD(WIZ_SERDES_RST, 24, 24); +static const struct reg_field pma_cmn_refclk_int_mode = + REG_FIELD(WIZ_SERDES_TOP_CTRL, 28, 29); +static const struct reg_field pma_cmn_refclk_mode = + REG_FIELD(WIZ_SERDES_TOP_CTRL, 30, 31); +static const struct reg_field pma_cmn_refclk_dig_div = + REG_FIELD(WIZ_SERDES_TOP_CTRL, 26, 27); +static const struct reg_field pma_cmn_refclk1_dig_div = + REG_FIELD(WIZ_SERDES_TOP_CTRL, 24, 25); + +static const struct reg_field p_enable[WIZ_MAX_LANES] = { + REG_FIELD(WIZ_LANECTL(0), 30, 31), + REG_FIELD(WIZ_LANECTL(1), 30, 31), + REG_FIELD(WIZ_LANECTL(2), 30, 31), + REG_FIELD(WIZ_LANECTL(3), 30, 31), +}; + +enum p_enable { P_ENABLE = 2, P_ENABLE_FORCE = 1, P_ENABLE_DISABLE = 0 }; + +static const struct reg_field p_align[WIZ_MAX_LANES] = { + REG_FIELD(WIZ_LANECTL(0), 29, 29), + REG_FIELD(WIZ_LANECTL(1), 29, 29), + REG_FIELD(WIZ_LANECTL(2), 29, 29), + REG_FIELD(WIZ_LANECTL(3), 29, 29), +}; + +static const struct reg_field p_raw_auto_start[WIZ_MAX_LANES] = { + REG_FIELD(WIZ_LANECTL(0), 28, 28), + REG_FIELD(WIZ_LANECTL(1), 28, 28), + REG_FIELD(WIZ_LANECTL(2), 28, 28), + REG_FIELD(WIZ_LANECTL(3), 28, 28), +}; + +static const struct reg_field p_standard_mode[WIZ_MAX_LANES] = { + REG_FIELD(WIZ_LANECTL(0), 24, 25), + REG_FIELD(WIZ_LANECTL(1), 24, 25), + REG_FIELD(WIZ_LANECTL(2), 24, 25), + REG_FIELD(WIZ_LANECTL(3), 24, 25), +}; + +static const struct reg_field p0_fullrt_div[WIZ_MAX_LANES] = { + REG_FIELD(WIZ_LANECTL(0), 22, 23), + REG_FIELD(WIZ_LANECTL(1), 22, 23), + REG_FIELD(WIZ_LANECTL(2), 22, 23), + REG_FIELD(WIZ_LANECTL(3), 22, 23), +}; + +static const struct reg_field p_mac_div_sel0[WIZ_MAX_LANES] = { + REG_FIELD(WIZ_LANEDIV(0), 16, 22), + REG_FIELD(WIZ_LANEDIV(1), 16, 22), + REG_FIELD(WIZ_LANEDIV(2), 16, 22), + REG_FIELD(WIZ_LANEDIV(3), 16, 22), +}; + +static const struct reg_field p_mac_div_sel1[WIZ_MAX_LANES] = { + REG_FIELD(WIZ_LANEDIV(0), 0, 8), + REG_FIELD(WIZ_LANEDIV(1), 0, 8), + REG_FIELD(WIZ_LANEDIV(2), 0, 8), + REG_FIELD(WIZ_LANEDIV(3), 0, 8), +}; + +struct wiz_clk_mux_sel { + enum wiz_refclk_mux_sel mux_sel; + u32 table[WIZ_MAX_INPUT_CLOCKS]; + const char *node_name; + u32 num_parents; + u32 parents[WIZ_MAX_INPUT_CLOCKS]; +}; + +struct wiz_clk_div_sel { + enum wiz_refclk_div_sel div_sel; + const char *node_name; +}; + +static struct wiz_clk_mux_sel clk_mux_sel_16g[] = { + { + /* + * Mux value to be configured for each of the input clocks + * in the order populated in device tree + */ + .num_parents = 2, + .parents = { WIZ_CORE_REFCLK, WIZ_EXT_REFCLK }, + .mux_sel = PLL0_REFCLK, + .table = { 1, 0 }, + .node_name = "pll0-refclk", + }, + { + .num_parents = 2, + .parents = { WIZ_CORE_REFCLK1, WIZ_EXT_REFCLK1 }, + .mux_sel = PLL1_REFCLK, + .table = { 1, 0 }, + .node_name = "pll1-refclk", + }, + { + .num_parents = 4, + .parents = { WIZ_CORE_REFCLK, WIZ_CORE_REFCLK1, WIZ_EXT_REFCLK, WIZ_EXT_REFCLK1 }, + .mux_sel = REFCLK_DIG, + .table = { 1, 3, 0, 2 }, + .node_name = "refclk-dig", + }, +}; + +static struct wiz_clk_mux_sel clk_mux_sel_10g[] = { + { + /* + * Mux value to be configured for each of the input clocks + * in the order populated in device tree + */ + .num_parents = 2, + .parents = { WIZ_CORE_REFCLK, WIZ_EXT_REFCLK }, + .mux_sel = PLL0_REFCLK, + .table = { 1, 0 }, + .node_name = "pll0-refclk", + }, + { + .num_parents = 2, + .parents = { WIZ_CORE_REFCLK, WIZ_EXT_REFCLK }, + .mux_sel = PLL1_REFCLK, + .table = { 1, 0 }, + .node_name = "pll1-refclk", + }, + { + .num_parents = 2, + .parents = { WIZ_CORE_REFCLK, WIZ_EXT_REFCLK }, + .mux_sel = REFCLK_DIG, + .table = { 1, 0 }, + .node_name = "refclk-dig", + }, +}; + +static struct wiz_clk_div_sel clk_div_sel[] = { + { + .div_sel = CMN_REFCLK, + .node_name = "cmn-refclk-dig-div", + }, + { + .div_sel = CMN_REFCLK1, + .node_name = "cmn-refclk1-dig-div", + }, +}; + +enum wiz_type { + J721E_WIZ_16G, + J721E_WIZ_10G, + AM64_WIZ_10G, +}; + +#define WIZ_TYPEC_DIR_DEBOUNCE_MIN 100 /* ms */ +#define WIZ_TYPEC_DIR_DEBOUNCE_MAX 1000 + +struct wiz { + struct regmap *regmap; + enum wiz_type type; + struct wiz_clk_mux_sel *clk_mux_sel; + struct wiz_clk_div_sel *clk_div_sel; + unsigned int clk_div_sel_num; + struct regmap_field *por_en; + struct regmap_field *phy_reset_n; + struct regmap_field *phy_en_refclk; + struct regmap_field *p_enable[WIZ_MAX_LANES]; + struct regmap_field *p_align[WIZ_MAX_LANES]; + struct regmap_field *p_raw_auto_start[WIZ_MAX_LANES]; + struct regmap_field *p_standard_mode[WIZ_MAX_LANES]; + struct regmap_field *p_mac_div_sel0[WIZ_MAX_LANES]; + struct regmap_field *p_mac_div_sel1[WIZ_MAX_LANES]; + struct regmap_field *p0_fullrt_div[WIZ_MAX_LANES]; + struct regmap_field *pma_cmn_refclk_int_mode; + struct regmap_field *pma_cmn_refclk_mode; + struct regmap_field *pma_cmn_refclk_dig_div; + struct regmap_field *pma_cmn_refclk1_dig_div; + struct regmap_field *div_sel_field[WIZ_DIV_NUM_CLOCKS_16G]; + struct regmap_field *mux_sel_field[WIZ_MUX_NUM_CLOCKS]; + + struct udevice *dev; + u32 num_lanes; + struct gpio_desc *gpio_typec_dir; + u32 lane_phy_type[WIZ_MAX_LANES]; + struct clk *input_clks[WIZ_MAX_INPUT_CLOCKS]; + unsigned int id; +}; + +struct wiz_div_clk { + struct clk parent_clk; + struct wiz *wiz; +}; + +struct wiz_mux_clk { + struct clk parent_clks[4]; + struct wiz *wiz; +}; + +struct wiz_clk { + struct wiz *wiz; +}; + +struct wiz_reset { + struct wiz *wiz; +}; + +static ulong wiz_div_clk_get_rate(struct clk *clk) +{ + struct udevice *dev = clk->dev; + struct wiz_div_clk *priv = dev_get_priv(dev); + struct wiz_clk_div_sel *data = dev_get_plat(dev); + struct wiz *wiz = priv->wiz; + ulong parent_rate = clk_get_rate(&priv->parent_clk); + u32 val; + + regmap_field_read(wiz->div_sel_field[data->div_sel], &val); + + return parent_rate >> val; +} + +static ulong wiz_div_clk_set_rate(struct clk *clk, ulong rate) +{ + struct udevice *dev = clk->dev; + struct wiz_div_clk *priv = dev_get_priv(dev); + struct wiz_clk_div_sel *data = dev_get_plat(dev); + struct wiz *wiz = priv->wiz; + ulong parent_rate = clk_get_rate(&priv->parent_clk); + u32 div = parent_rate / rate; + + div = __ffs(div); + regmap_field_write(wiz->div_sel_field[data->div_sel], div); + + return parent_rate >> div; +} + +const struct clk_ops wiz_div_clk_ops = { + .get_rate = wiz_div_clk_get_rate, + .set_rate = wiz_div_clk_set_rate, +}; + +int wiz_div_clk_probe(struct udevice *dev) +{ + struct wiz_div_clk *priv = dev_get_priv(dev); + struct clk parent_clk; + int rc; + + rc = clk_get_by_index(dev, 0, &parent_clk); + if (rc) { + dev_err(dev, "unable to get parent clock. ret %d\n", rc); + return rc; + } + priv->parent_clk = parent_clk; + priv->wiz = dev_get_priv(dev->parent); + return 0; +} + +U_BOOT_DRIVER(wiz_div_clk) = { + .name = "wiz_div_clk", + .id = UCLASS_CLK, + .priv_auto = sizeof(struct wiz_div_clk), + .ops = &wiz_div_clk_ops, + .probe = wiz_div_clk_probe, +}; + +static int wiz_clk_mux_set_parent(struct clk *clk, struct clk *parent) +{ + struct udevice *dev = clk->dev; + struct wiz_mux_clk *priv = dev_get_priv(dev); + struct wiz_clk_mux_sel *data = dev_get_plat(dev); + struct wiz *wiz = priv->wiz; + int i; + + for (i = 0; i < ARRAY_SIZE(priv->parent_clks); i++) + if (parent->dev == priv->parent_clks[i].dev) + break; + + if (i == ARRAY_SIZE(priv->parent_clks)) + return -EINVAL; + + regmap_field_write(wiz->mux_sel_field[data->mux_sel], data->table[i]); + return 0; +} + +static int wiz_clk_xlate(struct clk *clk, struct ofnode_phandle_args *args) +{ + struct udevice *dev = clk->dev; + struct wiz_mux_clk *priv = dev_get_priv(dev); + struct wiz *wiz = priv->wiz; + + clk->id = wiz->id; + + return 0; +} + +static const struct clk_ops wiz_clk_mux_ops = { + .set_parent = wiz_clk_mux_set_parent, + .of_xlate = wiz_clk_xlate, +}; + +int wiz_mux_clk_probe(struct udevice *dev) +{ + struct wiz_mux_clk *priv = dev_get_priv(dev); + int rc; + int i; + + for (i = 0; i < ARRAY_SIZE(priv->parent_clks); i++) { + rc = clk_get_by_index(dev, i, &priv->parent_clks[i]); + if (rc) + priv->parent_clks[i].dev = NULL; + } + priv->wiz = dev_get_priv(dev->parent); + return 0; +} + +U_BOOT_DRIVER(wiz_mux_clk) = { + .name = "wiz_mux_clk", + .id = UCLASS_CLK, + .priv_auto = sizeof(struct wiz_mux_clk), + .ops = &wiz_clk_mux_ops, + .probe = wiz_mux_clk_probe, +}; + +static int wiz_clk_set_parent(struct clk *clk, struct clk *parent) +{ + struct udevice *dev = clk->dev; + struct wiz_clk *priv = dev_get_priv(dev); + const struct wiz_clk_mux_sel *mux_sel; + struct wiz *wiz = priv->wiz; + int num_parents; + int i, j, id; + + id = clk->id >> 10; + + /* set_parent is applicable only for MUX clocks */ + if (id > TI_WIZ_REFCLK_DIG) + return 0; + + for (i = 0; i < WIZ_MAX_INPUT_CLOCKS; i++) + if (wiz->input_clks[i]->dev == parent->dev) + break; + + if (i == WIZ_MAX_INPUT_CLOCKS) + return -EINVAL; + + mux_sel = &wiz->clk_mux_sel[id]; + num_parents = mux_sel->num_parents; + for (j = 0; j < num_parents; j++) + if (mux_sel->parents[j] == i) + break; + + if (j == num_parents) + return -EINVAL; + + regmap_field_write(wiz->mux_sel_field[id], mux_sel->table[j]); + + return 0; +} + +static int wiz_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args) +{ + struct udevice *dev = clk->dev; + struct wiz_clk *priv = dev_get_priv(dev); + struct wiz *wiz = priv->wiz; + + clk->id = args->args[0] << 10 | wiz->id; + + return 0; +} + +static const struct clk_ops wiz_clk_ops = { + .set_parent = wiz_clk_set_parent, + .of_xlate = wiz_clk_of_xlate, +}; + +int wiz_clk_probe(struct udevice *dev) +{ + struct wiz_clk *priv = dev_get_priv(dev); + + priv->wiz = dev_get_priv(dev->parent); + + return 0; +} + +U_BOOT_DRIVER(wiz_clk) = { + .name = "wiz_clk", + .id = UCLASS_CLK, + .priv_auto = sizeof(struct wiz_clk), + .ops = &wiz_clk_ops, + .probe = wiz_clk_probe, +}; + +static int wiz_reset_request(struct reset_ctl *reset_ctl) +{ + return 0; +} + +static int wiz_reset_free(struct reset_ctl *reset_ctl) +{ + return 0; +} + +static int wiz_reset_assert(struct reset_ctl *reset_ctl) +{ + struct wiz_reset *priv = dev_get_priv(reset_ctl->dev); + struct wiz *wiz = priv->wiz; + int ret; + int id = reset_ctl->id; + + if (id == 0) { + ret = regmap_field_write(wiz->phy_reset_n, false); + return ret; + } + + ret = regmap_field_write(wiz->p_enable[id - 1], P_ENABLE_DISABLE); + return ret; +} + +static int wiz_phy_fullrt_div(struct wiz *wiz, int lane) +{ + if (wiz->type != AM64_WIZ_10G) + return 0; + + if (wiz->lane_phy_type[lane] == PHY_TYPE_PCIE) + return regmap_field_write(wiz->p0_fullrt_div[lane], 0x1); + + return 0; +} + +static int wiz_reset_deassert(struct reset_ctl *reset_ctl) +{ + struct wiz_reset *priv = dev_get_priv(reset_ctl->dev); + struct wiz *wiz = priv->wiz; + int ret; + int id = reset_ctl->id; + + ret = wiz_phy_fullrt_div(wiz, id - 1); + if (ret) + return ret; + + /* if typec-dir gpio was specified, set LN10 SWAP bit based on that */ + if (id == 0 && wiz->gpio_typec_dir) { + if (dm_gpio_get_value(wiz->gpio_typec_dir)) { + regmap_update_bits(wiz->regmap, WIZ_SERDES_TYPEC, + WIZ_SERDES_TYPEC_LN10_SWAP, + WIZ_SERDES_TYPEC_LN10_SWAP); + } else { + regmap_update_bits(wiz->regmap, WIZ_SERDES_TYPEC, + WIZ_SERDES_TYPEC_LN10_SWAP, 0); + } + } + + if (id == 0) { + ret = regmap_field_write(wiz->phy_reset_n, true); + return ret; + } + + if (wiz->lane_phy_type[id - 1] == PHY_TYPE_PCIE) + ret = regmap_field_write(wiz->p_enable[id - 1], P_ENABLE); + else + ret = regmap_field_write(wiz->p_enable[id - 1], P_ENABLE_FORCE); + + return ret; +} + +static struct reset_ops wiz_reset_ops = { + .request = wiz_reset_request, + .rfree = wiz_reset_free, + .rst_assert = wiz_reset_assert, + .rst_deassert = wiz_reset_deassert, +}; + +int wiz_reset_probe(struct udevice *dev) +{ + struct wiz_reset *priv = dev_get_priv(dev); + + priv->wiz = dev_get_priv(dev->parent); + + return 0; +} + +U_BOOT_DRIVER(wiz_reset) = { + .name = "wiz-reset", + .id = UCLASS_RESET, + .probe = wiz_reset_probe, + .ops = &wiz_reset_ops, + .flags = DM_FLAG_LEAVE_PD_ON, +}; + +static int wiz_reset(struct wiz *wiz) +{ + int ret; + + ret = regmap_field_write(wiz->por_en, 0x1); + if (ret) + return ret; + + mdelay(1); + + ret = regmap_field_write(wiz->por_en, 0x0); + if (ret) + return ret; + + return 0; +} + +static int wiz_p_mac_div_sel(struct wiz *wiz) +{ + u32 num_lanes = wiz->num_lanes; + int ret; + int i; + + for (i = 0; i < num_lanes; i++) { + if (wiz->lane_phy_type[i] == PHY_TYPE_QSGMII) { + ret = regmap_field_write(wiz->p_mac_div_sel0[i], 1); + if (ret) + return ret; + + ret = regmap_field_write(wiz->p_mac_div_sel1[i], 2); + if (ret) + return ret; + } + } + + return 0; +} + +static int wiz_mode_select(struct wiz *wiz) +{ + u32 num_lanes = wiz->num_lanes; + int ret; + int i; + + for (i = 0; i < num_lanes; i++) { + if (wiz->lane_phy_type[i] == PHY_TYPE_QSGMII) { + ret = regmap_field_write(wiz->p_standard_mode[i], + LANE_MODE_GEN2); + if (ret) + return ret; + } + } + + return 0; +} + +static int wiz_init_raw_interface(struct wiz *wiz, bool enable) +{ + u32 num_lanes = wiz->num_lanes; + int i; + int ret; + + for (i = 0; i < num_lanes; i++) { + ret = regmap_field_write(wiz->p_align[i], enable); + if (ret) + return ret; + + ret = regmap_field_write(wiz->p_raw_auto_start[i], enable); + if (ret) + return ret; + } + + return 0; +} + +static int wiz_init(struct wiz *wiz) +{ + struct udevice *dev = wiz->dev; + int ret; + + ret = wiz_reset(wiz); + if (ret) { + dev_err(dev, "WIZ reset failed\n"); + return ret; + } + + ret = wiz_mode_select(wiz); + if (ret) { + dev_err(dev, "WIZ mode select failed\n"); + return ret; + } + + ret = wiz_p_mac_div_sel(wiz); + if (ret) { + dev_err(dev, "Configuring P0 MAC DIV SEL failed\n"); + return ret; + } + + ret = wiz_init_raw_interface(wiz, true); + if (ret) { + dev_err(dev, "WIZ interface initialization failed\n"); + return ret; + } + + return 0; +} + +static int wiz_regfield_init(struct wiz *wiz) +{ + struct regmap *regmap = wiz->regmap; + int num_lanes = wiz->num_lanes; + struct udevice *dev = wiz->dev; + enum wiz_type type; + int i; + + wiz->por_en = devm_regmap_field_alloc(dev, regmap, por_en); + if (IS_ERR(wiz->por_en)) { + dev_err(dev, "POR_EN reg field init failed\n"); + return PTR_ERR(wiz->por_en); + } + + wiz->phy_reset_n = devm_regmap_field_alloc(dev, regmap, + phy_reset_n); + if (IS_ERR(wiz->phy_reset_n)) { + dev_err(dev, "PHY_RESET_N reg field init failed\n"); + return PTR_ERR(wiz->phy_reset_n); + } + + wiz->pma_cmn_refclk_int_mode = + devm_regmap_field_alloc(dev, regmap, pma_cmn_refclk_int_mode); + if (IS_ERR(wiz->pma_cmn_refclk_int_mode)) { + dev_err(dev, "PMA_CMN_REFCLK_INT_MODE reg field init failed\n"); + return PTR_ERR(wiz->pma_cmn_refclk_int_mode); + } + + wiz->pma_cmn_refclk_mode = + devm_regmap_field_alloc(dev, regmap, pma_cmn_refclk_mode); + if (IS_ERR(wiz->pma_cmn_refclk_mode)) { + dev_err(dev, "PMA_CMN_REFCLK_MODE reg field init failed\n"); + return PTR_ERR(wiz->pma_cmn_refclk_mode); + } + + wiz->div_sel_field[CMN_REFCLK] = + devm_regmap_field_alloc(dev, regmap, pma_cmn_refclk_dig_div); + if (IS_ERR(wiz->div_sel_field[CMN_REFCLK])) { + dev_err(dev, "PMA_CMN_REFCLK_DIG_DIV reg field init failed\n"); + return PTR_ERR(wiz->div_sel_field[CMN_REFCLK]); + } + + wiz->div_sel_field[CMN_REFCLK1] = + devm_regmap_field_alloc(dev, regmap, pma_cmn_refclk1_dig_div); + if (IS_ERR(wiz->div_sel_field[CMN_REFCLK1])) { + dev_err(dev, "PMA_CMN_REFCLK1_DIG_DIV reg field init failed\n"); + return PTR_ERR(wiz->div_sel_field[CMN_REFCLK1]); + } + + wiz->mux_sel_field[PLL0_REFCLK] = + devm_regmap_field_alloc(dev, regmap, pll0_refclk_mux_sel); + if (IS_ERR(wiz->mux_sel_field[PLL0_REFCLK])) { + dev_err(dev, "PLL0_REFCLK_SEL reg field init failed\n"); + return PTR_ERR(wiz->mux_sel_field[PLL0_REFCLK]); + } + + wiz->mux_sel_field[PLL1_REFCLK] = + devm_regmap_field_alloc(dev, regmap, pll1_refclk_mux_sel); + if (IS_ERR(wiz->mux_sel_field[PLL1_REFCLK])) { + dev_err(dev, "PLL1_REFCLK_SEL reg field init failed\n"); + return PTR_ERR(wiz->mux_sel_field[PLL1_REFCLK]); + } + + type = dev_get_driver_data(dev); + if (type == J721E_WIZ_10G || type == AM64_WIZ_10G) + wiz->mux_sel_field[REFCLK_DIG] = + devm_regmap_field_alloc(dev, regmap, + refclk_dig_sel_10g); + else + wiz->mux_sel_field[REFCLK_DIG] = + devm_regmap_field_alloc(dev, regmap, + refclk_dig_sel_16g); + if (IS_ERR(wiz->mux_sel_field[REFCLK_DIG])) { + dev_err(dev, "REFCLK_DIG_SEL reg field init failed\n"); + return PTR_ERR(wiz->mux_sel_field[REFCLK_DIG]); + } + + for (i = 0; i < num_lanes; i++) { + wiz->p_enable[i] = devm_regmap_field_alloc(dev, regmap, + p_enable[i]); + if (IS_ERR(wiz->p_enable[i])) { + dev_err(dev, "P%d_ENABLE reg field init failed\n", i); + return PTR_ERR(wiz->p_enable[i]); + } + + wiz->p_align[i] = devm_regmap_field_alloc(dev, regmap, + p_align[i]); + if (IS_ERR(wiz->p_align[i])) { + dev_err(dev, "P%d_ALIGN reg field init failed\n", i); + return PTR_ERR(wiz->p_align[i]); + } + + wiz->p_raw_auto_start[i] = + devm_regmap_field_alloc(dev, regmap, p_raw_auto_start[i]); + if (IS_ERR(wiz->p_raw_auto_start[i])) { + dev_err(dev, "P%d_RAW_AUTO_START reg field init fail\n", + i); + return PTR_ERR(wiz->p_raw_auto_start[i]); + } + + wiz->p_standard_mode[i] = + devm_regmap_field_alloc(dev, regmap, p_standard_mode[i]); + if (IS_ERR(wiz->p_standard_mode[i])) { + dev_err(dev, "P%d_STANDARD_MODE reg field init fail\n", + i); + return PTR_ERR(wiz->p_standard_mode[i]); + } + + wiz->p0_fullrt_div[i] = devm_regmap_field_alloc(dev, regmap, p0_fullrt_div[i]); + if (IS_ERR(wiz->p0_fullrt_div[i])) { + dev_err(dev, "P%d_FULLRT_DIV reg field init failed\n", i); + return PTR_ERR(wiz->p0_fullrt_div[i]); + } + + wiz->p_mac_div_sel0[i] = + devm_regmap_field_alloc(dev, regmap, p_mac_div_sel0[i]); + if (IS_ERR(wiz->p_mac_div_sel0[i])) { + dev_err(dev, "P%d_MAC_DIV_SEL0 reg field init fail\n", + i); + return PTR_ERR(wiz->p_mac_div_sel0[i]); + } + + wiz->p_mac_div_sel1[i] = + devm_regmap_field_alloc(dev, regmap, p_mac_div_sel1[i]); + if (IS_ERR(wiz->p_mac_div_sel1[i])) { + dev_err(dev, "P%d_MAC_DIV_SEL1 reg field init fail\n", + i); + return PTR_ERR(wiz->p_mac_div_sel1[i]); + } + } + + return 0; +} + +static int wiz_clock_init(struct wiz *wiz) +{ + struct udevice *dev = wiz->dev; + unsigned long rate; + struct clk *clk; + int ret; + + clk = devm_clk_get(dev, "core_ref_clk"); + if (IS_ERR(clk)) { + dev_err(dev, "core_ref_clk clock not found\n"); + ret = PTR_ERR(clk); + return ret; + } + wiz->input_clks[WIZ_CORE_REFCLK] = clk; + /* Initialize CORE_REFCLK1 to the same clock reference to maintain old DT compatibility */ + wiz->input_clks[WIZ_CORE_REFCLK1] = clk; + + rate = clk_get_rate(clk); + if (rate >= 100000000) + regmap_field_write(wiz->pma_cmn_refclk_int_mode, 0x1); + else + regmap_field_write(wiz->pma_cmn_refclk_int_mode, 0x3); + + clk = devm_clk_get(dev, "ext_ref_clk"); + if (IS_ERR(clk)) { + dev_err(dev, "ext_ref_clk clock not found\n"); + ret = PTR_ERR(clk); + return ret; + } + + wiz->input_clks[WIZ_EXT_REFCLK] = clk; + /* Initialize EXT_REFCLK1 to the same clock reference to maintain old DT compatibility */ + wiz->input_clks[WIZ_EXT_REFCLK1] = clk; + + rate = clk_get_rate(clk); + if (rate >= 100000000) + regmap_field_write(wiz->pma_cmn_refclk_mode, 0x0); + else + regmap_field_write(wiz->pma_cmn_refclk_mode, 0x2); + + return 0; +} + +static ofnode get_child_by_name(struct udevice *dev, const char *name) +{ + int l = strlen(name); + ofnode node = dev_read_first_subnode(dev); + + while (ofnode_valid(node)) { + const char *child_name = ofnode_get_name(node); + + if (!strncmp(child_name, name, l)) { + if (child_name[l] == '\0' || child_name[l] == '@') + return node; + } + node = dev_read_next_subnode(node); + } + return node; +} + +static int j721e_wiz_bind_clocks(struct wiz *wiz) +{ + struct udevice *dev = wiz->dev; + struct driver *wiz_clk_drv; + int i, rc; + + wiz_clk_drv = lists_driver_lookup_name("wiz_clk"); + if (!wiz_clk_drv) { + dev_err(dev, "Cannot find driver 'wiz_clk'\n"); + return -ENOENT; + } + + for (i = 0; i < WIZ_DIV_NUM_CLOCKS_10G; i++) { + rc = device_bind(dev, wiz_clk_drv, clk_div_sel[i].node_name, + &clk_div_sel[i], dev_ofnode(dev), NULL); + if (rc) { + dev_err(dev, "cannot bind driver for clock %s\n", + clk_div_sel[i].node_name); + } + } + + for (i = 0; i < WIZ_MUX_NUM_CLOCKS; i++) { + rc = device_bind(dev, wiz_clk_drv, clk_mux_sel_10g[i].node_name, + &clk_mux_sel_10g[i], dev_ofnode(dev), NULL); + if (rc) { + dev_err(dev, "cannot bind driver for clock %s\n", + clk_mux_sel_10g[i].node_name); + } + } + + return 0; +} + +static int j721e_wiz_bind_of_clocks(struct wiz *wiz) +{ + struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel; + struct udevice *dev = wiz->dev; + enum wiz_type type = wiz->type; + struct driver *div_clk_drv; + struct driver *mux_clk_drv; + ofnode node; + int i, rc; + + if (type == AM64_WIZ_10G) + return j721e_wiz_bind_clocks(wiz); + + div_clk_drv = lists_driver_lookup_name("wiz_div_clk"); + if (!div_clk_drv) { + dev_err(dev, "Cannot find driver 'wiz_div_clk'\n"); + return -ENOENT; + } + + mux_clk_drv = lists_driver_lookup_name("wiz_mux_clk"); + if (!mux_clk_drv) { + dev_err(dev, "Cannot find driver 'wiz_mux_clk'\n"); + return -ENOENT; + } + + for (i = 0; i < wiz->clk_div_sel_num; i++) { + node = get_child_by_name(dev, clk_div_sel[i].node_name); + if (!ofnode_valid(node)) { + dev_err(dev, "cannot find node for clock %s\n", + clk_div_sel[i].node_name); + continue; + } + rc = device_bind(dev, div_clk_drv, clk_div_sel[i].node_name, + &clk_div_sel[i], node, NULL); + if (rc) { + dev_err(dev, "cannot bind driver for clock %s\n", + clk_div_sel[i].node_name); + } + } + + for (i = 0; i < WIZ_MUX_NUM_CLOCKS; i++) { + node = get_child_by_name(dev, clk_mux_sel[i].node_name); + if (!ofnode_valid(node)) { + dev_err(dev, "cannot find node for clock %s\n", + clk_mux_sel[i].node_name); + continue; + } + rc = device_bind(dev, mux_clk_drv, clk_mux_sel[i].node_name, + &clk_mux_sel[i], node, NULL); + if (rc) { + dev_err(dev, "cannot bind driver for clock %s\n", + clk_mux_sel[i].node_name); + } + } + + return 0; +} + +static int j721e_wiz_bind_reset(struct udevice *dev) +{ + int rc; + struct driver *drv; + + drv = lists_driver_lookup_name("wiz-reset"); + if (!drv) { + dev_err(dev, "Cannot find driver 'wiz-reset'\n"); + return -ENOENT; + } + + rc = device_bind(dev, drv, "wiz-reset", NULL, dev_ofnode(dev), NULL); + if (rc) { + dev_err(dev, "cannot bind driver for wiz-reset\n"); + return rc; + } + + return 0; +} + +static int j721e_wiz_bind(struct udevice *dev) +{ + dm_scan_fdt_dev(dev); + + return 0; +} + +static int wiz_get_lane_phy_types(struct udevice *dev, struct wiz *wiz) +{ + ofnode child, serdes; + + serdes = get_child_by_name(dev, "serdes"); + if (!ofnode_valid(serdes)) { + dev_err(dev, "%s: Getting \"serdes\"-node failed\n", __func__); + return -EINVAL; + } + + ofnode_for_each_subnode(child, serdes) { + u32 reg, num_lanes = 1, phy_type = PHY_NONE; + int ret, i; + + ret = ofnode_read_u32(child, "reg", ®); + if (ret) { + dev_err(dev, "%s: Reading \"reg\" from failed: %d\n", + __func__, ret); + return ret; + } + ofnode_read_u32(child, "cdns,num-lanes", &num_lanes); + ofnode_read_u32(child, "cdns,phy-type", &phy_type); + + dev_dbg(dev, "%s: Lanes %u-%u have phy-type %u\n", __func__, + reg, reg + num_lanes - 1, phy_type); + + for (i = reg; i < reg + num_lanes; i++) + wiz->lane_phy_type[i] = phy_type; + } + + return 0; +} + +static int j721e_wiz_probe(struct udevice *dev) +{ + struct wiz *wiz = dev_get_priv(dev); + struct ofnode_phandle_args args; + unsigned int val; + int rc, i; + ofnode node; + struct regmap *regmap; + u32 num_lanes; + + node = get_child_by_name(dev, "serdes"); + + if (!ofnode_valid(node)) { + dev_err(dev, "Failed to get SERDES child DT node\n"); + return -ENODEV; + } + + rc = regmap_init_mem(node, ®map); + if (rc) { + dev_err(dev, "Failed to get memory resource\n"); + return rc; + } + rc = dev_read_u32(dev, "num-lanes", &num_lanes); + if (rc) { + dev_err(dev, "Failed to read num-lanes property\n"); + goto err_addr_to_resource; + } + + if (num_lanes > WIZ_MAX_LANES) { + dev_err(dev, "Cannot support %d lanes\n", num_lanes); + goto err_addr_to_resource; + } + + wiz->gpio_typec_dir = devm_gpiod_get_optional(dev, "typec-dir", + GPIOD_IS_IN); + if (IS_ERR(wiz->gpio_typec_dir)) { + rc = PTR_ERR(wiz->gpio_typec_dir); + dev_err(dev, "Failed to request typec-dir gpio: %d\n", rc); + goto err_addr_to_resource; + } + + rc = dev_read_phandle_with_args(dev, "power-domains", "#power-domain-cells", 0, 0, &args); + if (rc) { + dev_err(dev, "Failed to get power domain: %d\n", rc); + goto err_addr_to_resource; + } + + wiz->id = args.args[0]; + wiz->regmap = regmap; + wiz->num_lanes = num_lanes; + wiz->dev = dev; + wiz->clk_div_sel = clk_div_sel; + wiz->type = dev_get_driver_data(dev); + if (wiz->type == J721E_WIZ_10G || wiz->type == AM64_WIZ_10G) { + wiz->clk_mux_sel = clk_mux_sel_10g; + wiz->clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_10G; + } else { + wiz->clk_mux_sel = clk_mux_sel_16g; + wiz->clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_16G; + } + + rc = wiz_get_lane_phy_types(dev, wiz); + if (rc) { + dev_err(dev, "Failed to get lane PHY types\n"); + goto err_addr_to_resource; + } + + rc = wiz_regfield_init(wiz); + if (rc) { + dev_err(dev, "Failed to initialize regfields\n"); + goto err_addr_to_resource; + } + + for (i = 0; i < wiz->num_lanes; i++) { + regmap_field_read(wiz->p_enable[i], &val); + if (val & (P_ENABLE | P_ENABLE_FORCE)) { + dev_err(dev, "SERDES already configured\n"); + rc = -EBUSY; + goto err_addr_to_resource; + } + } + + rc = j721e_wiz_bind_of_clocks(wiz); + if (rc) { + dev_err(dev, "Failed to bind clocks\n"); + goto err_addr_to_resource; + } + + rc = j721e_wiz_bind_reset(dev); + if (rc) { + dev_err(dev, "Failed to bind reset\n"); + goto err_addr_to_resource; + } + + rc = wiz_clock_init(wiz); + if (rc) { + dev_warn(dev, "Failed to initialize clocks\n"); + goto err_addr_to_resource; + } + + rc = wiz_init(wiz); + if (rc) { + dev_err(dev, "WIZ initialization failed\n"); + goto err_addr_to_resource; + } + + return 0; + +err_addr_to_resource: + free(regmap); + + return rc; +} + +static int j721e_wiz_remove(struct udevice *dev) +{ + struct wiz *wiz = dev_get_priv(dev); + + if (wiz->regmap) + free(wiz->regmap); + + return 0; +} + +static const struct udevice_id j721e_wiz_ids[] = { + { + .compatible = "ti,j721e-wiz-16g", .data = J721E_WIZ_16G, + }, + { + .compatible = "ti,j721e-wiz-10g", .data = J721E_WIZ_10G, + }, + { + .compatible = "ti,am64-wiz-10g", .data = AM64_WIZ_10G, + }, + {} +}; + +U_BOOT_DRIVER(phy_j721e_wiz) = { + .name = "phy-j721e-wiz", + .id = UCLASS_NOP, + .of_match = j721e_wiz_ids, + .bind = j721e_wiz_bind, + .probe = j721e_wiz_probe, + .remove = j721e_wiz_remove, + .priv_auto = sizeof(struct wiz), + .flags = DM_FLAG_LEAVE_PD_ON, +}; |