1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2018-2019
4 * NVIDIA Corporation <www.nvidia.com>
11 #include <linux/bitops.h>
12 #include <linux/libfdt.h>
14 #include <asm/arch-tegra/cboot.h>
15 #include <asm/arch/gpio.h>
16 #include <asm/arch/pinmux.h>
17 #include "../p2571/max77620_init.h"
19 void pin_mux_mmc(void)
25 /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
26 debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
27 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
29 printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
32 /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
34 ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
36 printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
38 /* Disable LDO4 discharge */
39 ret = dm_i2c_read(dev, MAX77620_CNFG2_L4_REG, &val, 1);
41 printf("i2c_read 0 0x3c 0x2c failed: %d\n", ret);
43 val &= ~BIT(1); /* ADE */
44 ret = dm_i2c_write(dev, MAX77620_CNFG2_L4_REG, &val, 1);
46 printf("i2c_write 0 0x3c 0x2c failed: %d\n", ret);
50 ret = dm_i2c_read(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
52 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
54 val |= BIT(6); /* MBLPD */
55 ret = dm_i2c_write(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
57 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
61 #ifdef CONFIG_PCI_TEGRA
62 int tegra_pcie_board_init(void)
68 /* Turn on MAX77620 LDO1 to 1.05V for PEX power */
69 debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__);
70 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
72 printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
75 /* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
77 ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1);
79 printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret);
85 static void ft_mac_address_setup(void *fdt)
87 const void *cboot_fdt = (const void *)cboot_boot_x0;
88 uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN];
92 err = cboot_get_ethaddr(cboot_fdt, local_mac);
94 memset(local_mac, 0, ETH_ALEN);
96 path = fdt_get_alias(fdt, "ethernet");
100 debug("ethernet alias found: %s\n", path);
102 offset = fdt_path_offset(fdt, path);
104 printf("ethernet alias points to absent node %s\n", path);
108 if (is_valid_ethaddr(local_mac)) {
109 err = fdt_setprop(fdt, offset, "local-mac-address", local_mac,
112 debug("Local MAC address set: %pM\n", local_mac);
115 if (eth_env_get_enetaddr("ethaddr", mac)) {
116 if (memcmp(local_mac, mac, ETH_ALEN) != 0) {
117 err = fdt_setprop(fdt, offset, "mac-address", mac,
120 debug("MAC address set: %pM\n", mac);
125 static int ft_copy_carveout(void *dst, const void *src, const char *node)
127 struct fdt_memory fb;
130 err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb, NULL);
132 if (err != -FDT_ERR_NOTFOUND)
133 printf("failed to get carveout for %s: %d\n", node,
139 err = fdtdec_set_carveout(dst, node, "memory-region", 0, "framebuffer",
142 printf("failed to set carveout for %s: %d\n", node, err);
149 static void ft_carveout_setup(void *fdt)
151 const void *cboot_fdt = (const void *)cboot_boot_x0;
152 static const char * const nodes[] = {
153 "/host1x@50000000/dc@54200000",
154 "/host1x@50000000/dc@54240000",
159 for (i = 0; i < ARRAY_SIZE(nodes); i++) {
160 printf("copying carveout for %s...\n", nodes[i]);
162 err = ft_copy_carveout(fdt, cboot_fdt, nodes[i]);
164 if (err != -FDT_ERR_NOTFOUND)
165 printf("failed to copy carveout for %s: %d\n",
173 int ft_board_setup(void *fdt, struct bd_info *bd)
175 ft_mac_address_setup(fdt);
176 ft_carveout_setup(fdt);