1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2022 Marek Vasut <marex@denx.de>
4 */
5
6#include <common.h>
7#include <asm/arch/clock.h>
8#include <asm/arch/imx8mm_pins.h>
9#include <asm/io.h>
10#include <dm.h>
11#include <dm/device-internal.h>
12#include <linux/bitfield.h>
13#include <malloc.h>
14#include <spl.h>
15
16#include "../common/common.h"
17
18DECLARE_GLOBAL_DATA_PTR;
19
20int board_init(void)
21{
22	return 0;
23}
24
25int board_late_init(void)
26{
27	struct udevice *dev;
28	int ret;
29
30	dmo_setup_boot_device();
31	dmo_setup_mac_address();
32
33	ret = uclass_get_device_by_name(UCLASS_MISC, "usb-hub@2c", &dev);
34	if (ret)
35		printf("Error bringing up USB hub (%d)\n", ret);
36
37	return 0;
38}
39
40int fdtdec_board_setup(const void *fdt_blob)
41{
42	const void __iomem *mux = (void __iomem *)IOMUXC_BASE_ADDR +
43		FIELD_GET(MUX_CTRL_OFS_MASK, IMX8MM_PAD_ENET_MDC_GPIO1_IO16);
44	const char *phy_compat = "ethernet-phy-ieee802.3-c22";
45	bool is_bcmphy;
46	int phy_node;
47	int ret;
48
49	/* Do nothing if not i.MX8MM eDM SBC */
50	ret = fdt_node_check_compatible(fdt_blob, 0, "dmo,imx8mm-data-modul-edm-sbc");
51	if (ret)
52		return 0;
53
54	/*
55	 * If GPIO1_16 RGMII_MDC is HIGH, then R530 is populated.
56	 * R530 is populated only on boards with AR8031 PHY.
57	 *
58	 * If GPIO1_16 RGMII_MDC is LOW, then the in-SoM pull down
59	 * is the dominant pull resistor. This is the case on boards
60	 * with BCM54213PE PHY.
61	 */
62	setbits_le32(mux, IOMUX_CONFIG_SION);
63	is_bcmphy = !(readl(GPIO1_BASE_ADDR) & BIT(16));
64	clrbits_le32(mux, IOMUX_CONFIG_SION);
65
66	phy_node = fdt_node_offset_by_compatible(fdt_blob, -1, phy_compat);
67	if (phy_node < 0)
68		return 0;
69
70	/*
71	 * Update PHY MDC address in control DT based on the populated
72	 * PHY type. AR8031 is at address 0, BCM54213PE is at address 1.
73	 */
74	fdt_setprop_inplace_u32((void *)fdt_blob, phy_node,
75				"reg", is_bcmphy ? 1 : 0);
76
77	return 0;
78}
79