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Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Mugunthan V N9e556352016-04-28 15:36:07 +05302/*
3 * CPSW common - libs used across TI ethernet devices.
4 *
5 * Copyright (C) 2016, Texas Instruments, Incorporated
Mugunthan V N9e556352016-04-28 15:36:07 +05306 */
7
Mugunthan V N9e556352016-04-28 15:36:07 +05308#include <dm.h>
9#include <fdt_support.h>
Simon Glass3ba929a2020-10-30 21:38:53 -060010#include <asm/global_data.h>
Mugunthan V N9e556352016-04-28 15:36:07 +053011#include <asm/io.h>
12#include <cpsw.h>
Simon Glass9bc15642020-02-03 07:36:16 -070013#include <dm/device_compat.h>
Simon Glassbdd5f812023-09-14 18:21:46 -060014#include <linux/printk.h>
Mugunthan V N9e556352016-04-28 15:36:07 +053015
16DECLARE_GLOBAL_DATA_PTR;
17
18#define CTRL_MAC_REG(offset, id) ((offset) + 0x8 * (id))
19
Faiz Abbas8ecdffe2019-03-18 13:54:34 +053020static void davinci_emac_3517_get_macid(u32 addr, u8 *mac_addr)
Mugunthan V N9e556352016-04-28 15:36:07 +053021{
Mugunthan V N9e556352016-04-28 15:36:07 +053022 /* try reading mac address from efuse */
Faiz Abbas8ecdffe2019-03-18 13:54:34 +053023 u32 macid_lsb = readl(addr);
24 u32 macid_msb = readl(addr + 4);
Mugunthan V N9e556352016-04-28 15:36:07 +053025
26 mac_addr[0] = (macid_msb >> 16) & 0xff;
27 mac_addr[1] = (macid_msb >> 8) & 0xff;
28 mac_addr[2] = macid_msb & 0xff;
29 mac_addr[3] = (macid_lsb >> 16) & 0xff;
30 mac_addr[4] = (macid_lsb >> 8) & 0xff;
31 mac_addr[5] = macid_lsb & 0xff;
Faiz Abbas8ecdffe2019-03-18 13:54:34 +053032}
Mugunthan V N9e556352016-04-28 15:36:07 +053033
Faiz Abbas8ecdffe2019-03-18 13:54:34 +053034static void cpsw_am33xx_cm_get_macid(u32 addr, u8 *mac_addr)
35{
36 /* try reading mac address from efuse */
37 u32 macid_lo = readl(addr);
38 u32 macid_hi = readl(addr + 4);
39
40 mac_addr[5] = (macid_lo >> 8) & 0xff;
41 mac_addr[4] = macid_lo & 0xff;
42 mac_addr[3] = (macid_hi >> 24) & 0xff;
43 mac_addr[2] = (macid_hi >> 16) & 0xff;
44 mac_addr[1] = (macid_hi >> 8) & 0xff;
45 mac_addr[0] = macid_hi & 0xff;
Mugunthan V N9e556352016-04-28 15:36:07 +053046}
47
Faiz Abbas8ecdffe2019-03-18 13:54:34 +053048void ti_cm_get_macid(struct udevice *dev, struct cpsw_platform_data *data,
49 u8 *mac_addr)
50{
51 if (!strcmp(data->macid_sel_compat, "cpsw,am33xx"))
52 cpsw_am33xx_cm_get_macid(data->syscon_addr, mac_addr);
53 else if (!strcmp(data->macid_sel_compat, "davinci,emac"))
54 davinci_emac_3517_get_macid(data->syscon_addr, mac_addr);
55}
56
57int ti_cm_get_macid_addr(struct udevice *dev, int slave,
58 struct cpsw_platform_data *data)
Mugunthan V N9e556352016-04-28 15:36:07 +053059{
60 void *fdt = (void *)gd->fdt_blob;
Simon Glassdd79d6e2017-01-17 16:52:55 -070061 int node = dev_of_offset(dev);
Mugunthan V N9e556352016-04-28 15:36:07 +053062 fdt32_t gmii = 0;
63 int syscon;
Faiz Abbas8ecdffe2019-03-18 13:54:34 +053064 u16 offset;
65
66 if (of_machine_is_compatible("ti,dm8148")) {
67 offset = 0x630;
68 data->macid_sel_compat = "cpsw,am33xx";
69 } else if (of_machine_is_compatible("ti,am33xx")) {
70 offset = 0x630;
71 data->macid_sel_compat = "cpsw,am33xx";
72 } else if (device_is_compatible(dev, "ti,am3517-emac")) {
73 offset = 0x110;
74 data->macid_sel_compat = "davinci,emac";
75 } else if (device_is_compatible(dev, "ti,dm816-emac")) {
76 offset = 0x30;
77 data->macid_sel_compat = "cpsw,am33xx";
78 } else if (of_machine_is_compatible("ti,am43")) {
79 offset = 0x630;
80 data->macid_sel_compat = "cpsw,am33xx";
81 } else if (of_machine_is_compatible("ti,dra7")) {
82 offset = 0x514;
83 data->macid_sel_compat = "davinci,emac";
84 } else {
85 dev_err(dev, "incompatible machine/device type for reading mac address\n");
86 return -ENOENT;
87 }
Mugunthan V N9e556352016-04-28 15:36:07 +053088
89 syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
90 if (syscon < 0) {
Masahiro Yamada81e10422017-09-16 14:10:41 +090091 pr_err("Syscon offset not found\n");
Mugunthan V N9e556352016-04-28 15:36:07 +053092 return -ENOENT;
93 }
94
Faiz Abbas8ecdffe2019-03-18 13:54:34 +053095 data->syscon_addr = (u32)map_physmem(fdt_translate_address(fdt, syscon,
96 &gmii),
97 sizeof(u32), MAP_NOCACHE);
98 if (data->syscon_addr == FDT_ADDR_T_NONE) {
Masahiro Yamada81e10422017-09-16 14:10:41 +090099 pr_err("Not able to get syscon address to get mac efuse address\n");
Mugunthan V N9e556352016-04-28 15:36:07 +0530100 return -ENOENT;
101 }
102
Faiz Abbas8ecdffe2019-03-18 13:54:34 +0530103 data->syscon_addr += CTRL_MAC_REG(offset, slave);
Mugunthan V N9e556352016-04-28 15:36:07 +0530104
105 return 0;
Mugunthan V N9e556352016-04-28 15:36:07 +0530106
Mugunthan V N9e556352016-04-28 15:36:07 +0530107}