1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2015-2016 Marvell International Ltd.
4 *
5 * Copyright (C) 2016 Stefan Roese <sr@denx.de>
6 */
7
8 #include <common.h>
9 #include <dm.h>
10 #include <fdtdec.h>
11 #include <linux/errno.h>
12 #include <asm/io.h>
13
14 #include "comphy_core.h"
15
16 #define COMPHY_MAX_CHIP 4
17
18 DECLARE_GLOBAL_DATA_PTR;
19
get_speed_string(u32 speed)20 static const char *get_speed_string(u32 speed)
21 {
22 static const char * const speed_strings[] = {
23 "1.25 Gbps", "1.5 Gbps", "2.5 Gbps",
24 "3.0 Gbps", "3.125 Gbps", "5 Gbps", "6 Gbps",
25 "6.25 Gbps", "10.31 Gbps"
26 };
27
28 if (speed < 0 || speed > PHY_SPEED_MAX)
29 return "invalid";
30
31 return speed_strings[speed];
32 }
33
get_type_string(u32 type)34 static const char *get_type_string(u32 type)
35 {
36 static const char * const type_strings[] = {
37 "UNCONNECTED", "PEX0", "PEX1", "PEX2", "PEX3",
38 "SATA0", "SATA1", "SATA2", "SATA3", "SGMII0",
39 "SGMII1", "SGMII2", "SGMII3", "QSGMII",
40 "USB3_HOST0", "USB3_HOST1", "USB3_DEVICE",
41 "XAUI0", "XAUI1", "XAUI2", "XAUI3",
42 "RXAUI0", "RXAUI1", "SFI", "IGNORE"
43 };
44
45 if (type < 0 || type > PHY_TYPE_MAX)
46 return "invalid";
47
48 return type_strings[type];
49 }
50
comphy_print(struct chip_serdes_phy_config * chip_cfg,struct comphy_map * comphy_map_data)51 void comphy_print(struct chip_serdes_phy_config *chip_cfg,
52 struct comphy_map *comphy_map_data)
53 {
54 u32 lane;
55
56 for (lane = 0; lane < chip_cfg->comphy_lanes_count;
57 lane++, comphy_map_data++) {
58 if (comphy_map_data->speed == PHY_SPEED_INVALID) {
59 printf("Comphy-%d: %-13s\n", lane,
60 get_type_string(comphy_map_data->type));
61 } else {
62 printf("Comphy-%d: %-13s %-10s\n", lane,
63 get_type_string(comphy_map_data->type),
64 get_speed_string(comphy_map_data->speed));
65 }
66 }
67 }
68
comphy_update_map(struct comphy_map * serdes_map,int count)69 __weak int comphy_update_map(struct comphy_map *serdes_map, int count)
70 {
71 return 0;
72 }
73
comphy_probe(struct udevice * dev)74 static int comphy_probe(struct udevice *dev)
75 {
76 const void *blob = gd->fdt_blob;
77 int node = dev_of_offset(dev);
78 struct chip_serdes_phy_config *chip_cfg = dev_get_priv(dev);
79 struct comphy_map comphy_map_data[MAX_LANE_OPTIONS];
80 int subnode;
81 int lane;
82 int last_idx = 0;
83 static int current_idx;
84 int res;
85
86 /* Save base addresses for later use */
87 chip_cfg->comphy_base_addr = (void *)devfdt_get_addr_index(dev, 0);
88 if (IS_ERR(chip_cfg->comphy_base_addr))
89 return PTR_ERR(chip_cfg->comphy_base_addr);
90
91 chip_cfg->hpipe3_base_addr = (void *)devfdt_get_addr_index(dev, 1);
92 if (IS_ERR(chip_cfg->hpipe3_base_addr))
93 return PTR_ERR(chip_cfg->hpipe3_base_addr);
94
95 chip_cfg->comphy_lanes_count = fdtdec_get_int(blob, node,
96 "max-lanes", 0);
97 if (chip_cfg->comphy_lanes_count <= 0) {
98 dev_err(&dev->dev, "comphy max lanes is wrong\n");
99 return -EINVAL;
100 }
101
102 chip_cfg->comphy_mux_bitcount = fdtdec_get_int(blob, node,
103 "mux-bitcount", 0);
104 if (chip_cfg->comphy_mux_bitcount <= 0) {
105 dev_err(&dev->dev, "comphy mux bit count is wrong\n");
106 return -EINVAL;
107 }
108
109 chip_cfg->comphy_mux_lane_order =
110 fdtdec_locate_array(blob, node, "mux-lane-order",
111 chip_cfg->comphy_lanes_count);
112
113 if (device_is_compatible(dev, "marvell,comphy-armada-3700"))
114 chip_cfg->ptr_comphy_chip_init = comphy_a3700_init;
115
116 if (device_is_compatible(dev, "marvell,comphy-cp110"))
117 chip_cfg->ptr_comphy_chip_init = comphy_cp110_init;
118
119 /*
120 * Bail out if no chip_init function is defined, e.g. no
121 * compatible node is found
122 */
123 if (!chip_cfg->ptr_comphy_chip_init) {
124 dev_err(&dev->dev, "comphy: No compatible DT node found\n");
125 return -ENODEV;
126 }
127
128 lane = 0;
129 fdt_for_each_subnode(subnode, blob, node) {
130 /* Skip disabled ports */
131 if (!fdtdec_get_is_enabled(blob, subnode))
132 continue;
133
134 comphy_map_data[lane].speed = fdtdec_get_int(
135 blob, subnode, "phy-speed", PHY_TYPE_INVALID);
136 comphy_map_data[lane].type = fdtdec_get_int(
137 blob, subnode, "phy-type", PHY_SPEED_INVALID);
138 comphy_map_data[lane].invert = fdtdec_get_int(
139 blob, subnode, "phy-invert", PHY_POLARITY_NO_INVERT);
140 comphy_map_data[lane].clk_src = fdtdec_get_bool(blob, subnode,
141 "clk-src");
142 comphy_map_data[lane].end_point = fdtdec_get_bool(blob, subnode,
143 "end_point");
144 if (comphy_map_data[lane].type == PHY_TYPE_INVALID) {
145 printf("no phy type for lane %d, setting lane as unconnected\n",
146 lane + 1);
147 }
148
149 lane++;
150 }
151
152 res = comphy_update_map(comphy_map_data, chip_cfg->comphy_lanes_count);
153 if (res < 0)
154 return res;
155
156 /* Save CP index for MultiCP devices (A8K) */
157 chip_cfg->cp_index = current_idx++;
158 /* PHY power UP sequence */
159 chip_cfg->ptr_comphy_chip_init(chip_cfg, comphy_map_data);
160 /* PHY print SerDes status */
161 if (of_machine_is_compatible("marvell,armada8040"))
162 printf("Comphy chip #%d:\n", chip_cfg->cp_index);
163 comphy_print(chip_cfg, comphy_map_data);
164
165 /*
166 * Only run the dedicated PHY init code once, in the last PHY init call
167 */
168 if (of_machine_is_compatible("marvell,armada8040"))
169 last_idx = 1;
170
171 if (chip_cfg->cp_index == last_idx) {
172 /* Initialize dedicated PHYs (not muxed SerDes lanes) */
173 comphy_dedicated_phys_init();
174 }
175
176 return 0;
177 }
178
179 static const struct udevice_id comphy_ids[] = {
180 { .compatible = "marvell,mvebu-comphy" },
181 { }
182 };
183
184 U_BOOT_DRIVER(mvebu_comphy) = {
185 .name = "mvebu_comphy",
186 .id = UCLASS_MISC,
187 .of_match = comphy_ids,
188 .probe = comphy_probe,
189 .priv_auto_alloc_size = sizeof(struct chip_serdes_phy_config),
190 };
191