1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015-2016 Marvell International Ltd.
5 * Copyright (C) 2016 Stefan Roese <sr@denx.de>
11 #include <dm/device_compat.h>
12 #include <linux/err.h>
13 #include <linux/errno.h>
16 #include "comphy_core.h"
18 #define COMPHY_MAX_CHIP 4
20 DECLARE_GLOBAL_DATA_PTR;
22 static const char *get_speed_string(u32 speed)
24 static const char * const speed_strings[] = {
25 "1.25 Gbps", "1.5 Gbps", "2.5 Gbps",
26 "3.0 Gbps", "3.125 Gbps", "5 Gbps", "6 Gbps",
27 "6.25 Gbps", "10.31 Gbps"
30 if (speed < 0 || speed > PHY_SPEED_MAX)
33 return speed_strings[speed];
36 static const char *get_type_string(u32 type)
38 static const char * const type_strings[] = {
39 "UNCONNECTED", "PEX0", "PEX1", "PEX2", "PEX3",
40 "SATA0", "SATA1", "SATA2", "SATA3", "SGMII0",
41 "SGMII1", "SGMII2", "SGMII3", "QSGMII",
42 "USB3_HOST0", "USB3_HOST1", "USB3_DEVICE",
43 "XAUI0", "XAUI1", "XAUI2", "XAUI3",
44 "RXAUI0", "RXAUI1", "SFI", "IGNORE"
47 if (type < 0 || type > PHY_TYPE_MAX)
50 return type_strings[type];
53 void comphy_print(struct chip_serdes_phy_config *chip_cfg,
54 struct comphy_map *comphy_map_data)
58 for (lane = 0; lane < chip_cfg->comphy_lanes_count;
59 lane++, comphy_map_data++) {
60 if (comphy_map_data->speed == PHY_SPEED_INVALID) {
61 printf("Comphy-%d: %-13s\n", lane,
62 get_type_string(comphy_map_data->type));
64 printf("Comphy-%d: %-13s %-10s\n", lane,
65 get_type_string(comphy_map_data->type),
66 get_speed_string(comphy_map_data->speed));
71 __weak int comphy_update_map(struct comphy_map *serdes_map, int count)
76 static int comphy_probe(struct udevice *dev)
78 const void *blob = gd->fdt_blob;
79 int node = dev_of_offset(dev);
80 struct chip_serdes_phy_config *chip_cfg = dev_get_priv(dev);
81 struct comphy_map comphy_map_data[MAX_LANE_OPTIONS];
85 static int current_idx;
88 /* Save base addresses for later use */
89 chip_cfg->comphy_base_addr = (void *)devfdt_get_addr_index(dev, 0);
90 if (IS_ERR(chip_cfg->comphy_base_addr))
91 return PTR_ERR(chip_cfg->comphy_base_addr);
93 chip_cfg->hpipe3_base_addr = (void *)devfdt_get_addr_index(dev, 1);
94 if (IS_ERR(chip_cfg->hpipe3_base_addr))
95 return PTR_ERR(chip_cfg->hpipe3_base_addr);
97 chip_cfg->comphy_lanes_count = fdtdec_get_int(blob, node,
99 if (chip_cfg->comphy_lanes_count <= 0) {
100 dev_err(&dev->dev, "comphy max lanes is wrong\n");
104 chip_cfg->comphy_mux_bitcount = fdtdec_get_int(blob, node,
106 if (chip_cfg->comphy_mux_bitcount <= 0) {
107 dev_err(&dev->dev, "comphy mux bit count is wrong\n");
111 chip_cfg->comphy_mux_lane_order =
112 fdtdec_locate_array(blob, node, "mux-lane-order",
113 chip_cfg->comphy_lanes_count);
115 if (device_is_compatible(dev, "marvell,comphy-armada-3700"))
116 chip_cfg->ptr_comphy_chip_init = comphy_a3700_init;
118 if (device_is_compatible(dev, "marvell,comphy-cp110"))
119 chip_cfg->ptr_comphy_chip_init = comphy_cp110_init;
122 * Bail out if no chip_init function is defined, e.g. no
123 * compatible node is found
125 if (!chip_cfg->ptr_comphy_chip_init) {
126 dev_err(&dev->dev, "comphy: No compatible DT node found\n");
131 fdt_for_each_subnode(subnode, blob, node) {
132 /* Skip disabled ports */
133 if (!fdtdec_get_is_enabled(blob, subnode))
136 comphy_map_data[lane].speed = fdtdec_get_int(
137 blob, subnode, "phy-speed", PHY_TYPE_INVALID);
138 comphy_map_data[lane].type = fdtdec_get_int(
139 blob, subnode, "phy-type", PHY_SPEED_INVALID);
140 comphy_map_data[lane].invert = fdtdec_get_int(
141 blob, subnode, "phy-invert", PHY_POLARITY_NO_INVERT);
142 comphy_map_data[lane].clk_src = fdtdec_get_bool(blob, subnode,
144 comphy_map_data[lane].end_point = fdtdec_get_bool(blob, subnode,
146 if (comphy_map_data[lane].type == PHY_TYPE_INVALID) {
147 printf("no phy type for lane %d, setting lane as unconnected\n",
154 res = comphy_update_map(comphy_map_data, chip_cfg->comphy_lanes_count);
158 /* Save CP index for MultiCP devices (A8K) */
159 chip_cfg->cp_index = current_idx++;
160 /* PHY power UP sequence */
161 chip_cfg->ptr_comphy_chip_init(chip_cfg, comphy_map_data);
162 /* PHY print SerDes status */
163 if (of_machine_is_compatible("marvell,armada8040"))
164 printf("Comphy chip #%d:\n", chip_cfg->cp_index);
165 comphy_print(chip_cfg, comphy_map_data);
168 * Only run the dedicated PHY init code once, in the last PHY init call
170 if (of_machine_is_compatible("marvell,armada8040"))
173 if (chip_cfg->cp_index == last_idx) {
174 /* Initialize dedicated PHYs (not muxed SerDes lanes) */
175 comphy_dedicated_phys_init();
181 static const struct udevice_id comphy_ids[] = {
182 { .compatible = "marvell,mvebu-comphy" },
186 U_BOOT_DRIVER(mvebu_comphy) = {
187 .name = "mvebu_comphy",
189 .of_match = comphy_ids,
190 .probe = comphy_probe,
191 .priv_auto_alloc_size = sizeof(struct chip_serdes_phy_config),