1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2022 Marek Vasut <marex@denx.de>
4 */
5
6 #include <asm/arch/clock.h>
7 #include <asm/arch/imx8mp_pins.h>
8 #include <asm/io.h>
9 #include <dm.h>
10 #include <dm/device-internal.h>
11 #include <env.h>
12 #include <env_internal.h>
13 #include <linux/bitfield.h>
14 #include <malloc.h>
15 #include <net.h>
16 #include <spl.h>
17
18 #include "../common/common.h"
19
20 DECLARE_GLOBAL_DATA_PTR;
21
dmo_setup_second_mac_address(void)22 static void dmo_setup_second_mac_address(void)
23 {
24 u8 enetaddr[6];
25 int ret;
26
27 /* In case 'eth1addr' is already set in environment, do nothing. */
28 ret = eth_env_get_enetaddr_by_index("eth", 1, enetaddr);
29 if (ret) /* valid 'eth1addr' is already set */
30 return;
31
32 /* Read 'ethaddr' from environment and validate. */
33 ret = eth_env_get_enetaddr_by_index("eth", 0, enetaddr);
34 if (!ret) /* 'ethaddr' in environment is not valid, stop */
35 return;
36
37 /* Set 'eth1addr' as 'ethaddr' + 1 */
38 enetaddr[5]++;
39
40 eth_env_set_enetaddr_by_index("eth", 1, enetaddr);
41 }
42
env_get_location(enum env_operation op,int prio)43 enum env_location env_get_location(enum env_operation op, int prio)
44 {
45 /* Environment is always in eMMC boot partitions */
46 return prio ? ENVL_UNKNOWN : ENVL_MMC;
47 }
48
board_late_init(void)49 int board_late_init(void)
50 {
51 struct udevice *dev;
52 int ret;
53
54 dmo_setup_boot_device();
55 dmo_setup_mac_address();
56 dmo_setup_second_mac_address();
57
58 ret = uclass_get_device_by_name(UCLASS_MISC, "usb-hub@2c", &dev);
59 if (ret)
60 printf("Error bringing up USB hub (%d)\n", ret);
61
62 return 0;
63 }
64
fdtdec_board_setup(const void * fdt_blob)65 int fdtdec_board_setup(const void *fdt_blob)
66 {
67 const void __iomem *mux = (void __iomem *)IOMUXC_BASE_ADDR +
68 FIELD_GET(MUX_CTRL_OFS_MASK, MX8MP_PAD_ENET_MDC__ENET_QOS_MDC);
69 const char *phy_compat = "ethernet-phy-ieee802.3-c22";
70 bool is_bcmphy;
71 int phy_node;
72 int ret;
73
74 /* Do nothing if not i.MX8MP eDM SBC */
75 ret = fdt_node_check_compatible(fdt_blob, 0, "dmo,imx8mp-data-modul-edm-sbc");
76 if (ret)
77 return 0;
78
79 /*
80 * If GPIO1_16 RGMII_MDC is HIGH, then R390 is populated.
81 * R390 is populated only on boards with AR8031 PHY.
82 *
83 * If GPIO1_16 RGMII_MDC is LOW, then the in-SoM pull down
84 * is the dominant pull resistor. This is the case on boards
85 * with BCM54213PE PHY.
86 */
87 setbits_le32(mux, IOMUX_CONFIG_SION);
88 is_bcmphy = !(readl(GPIO1_BASE_ADDR) & BIT(16));
89 clrbits_le32(mux, IOMUX_CONFIG_SION);
90
91 phy_node = fdt_node_offset_by_compatible(fdt_blob, -1, phy_compat);
92 if (phy_node < 0)
93 return 0;
94
95 /*
96 * Update PHY MDC address in control DT based on the populated
97 * PHY type. AR8031 is at address 0, BCM54213PE is at address 1.
98 */
99 fdt_setprop_inplace_u32((void *)fdt_blob, phy_node,
100 "reg", is_bcmphy ? 1 : 0);
101
102 /* Apply the same modification to EQoS PHY */
103 phy_node = fdt_node_offset_by_compatible(fdt_blob, phy_node, phy_compat);
104 if (phy_node < 0)
105 return 0;
106
107 fdt_setprop_inplace_u32((void *)fdt_blob, phy_node,
108 "reg", is_bcmphy ? 1 : 0);
109
110 return 0;
111 }
112