1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2013-2019
4 * NVIDIA Corporation <www.nvidia.com>
13 #include <linux/bitops.h>
14 #include <linux/libfdt.h>
15 #include <asm/arch/gpio.h>
16 #include <asm/arch/pinmux.h>
17 #include <asm/arch-tegra/cboot.h>
18 #include "../p2571/max77620_init.h"
20 void pin_mux_mmc(void)
26 /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
27 debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
28 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
30 printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
33 /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
35 ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
37 printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
39 /* Disable LDO4 discharge */
40 ret = dm_i2c_read(dev, MAX77620_CNFG2_L4_REG, &val, 1);
42 printf("i2c_read 0 0x3c 0x2c failed: %d\n", ret);
44 val &= ~BIT(1); /* ADE */
45 ret = dm_i2c_write(dev, MAX77620_CNFG2_L4_REG, &val, 1);
47 printf("i2c_write 0 0x3c 0x2c failed: %d\n", ret);
51 ret = dm_i2c_read(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
53 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
55 val |= BIT(6); /* MBLPD */
56 ret = dm_i2c_write(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
58 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
62 #ifdef CONFIG_PCI_TEGRA
63 int tegra_pcie_board_init(void)
69 /* Turn on MAX77620 LDO1 to 1.05V for PEX power */
70 debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__);
71 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
73 printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
76 /* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
78 ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1);
80 printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret);
86 static void ft_mac_address_setup(void *fdt)
88 const void *cboot_fdt = (const void *)cboot_boot_x0;
89 uint8_t mac[ETH_ALEN], local_mac[ETH_ALEN];
93 err = cboot_get_ethaddr(cboot_fdt, local_mac);
95 memset(local_mac, 0, ETH_ALEN);
97 path = fdt_get_alias(fdt, "ethernet");
101 debug("ethernet alias found: %s\n", path);
103 offset = fdt_path_offset(fdt, path);
105 printf("ethernet alias points to absent node %s\n", path);
109 if (is_valid_ethaddr(local_mac)) {
110 err = fdt_setprop(fdt, offset, "local-mac-address", local_mac,
113 debug("Local MAC address set: %pM\n", local_mac);
116 if (eth_env_get_enetaddr("ethaddr", mac)) {
117 if (memcmp(local_mac, mac, ETH_ALEN) != 0) {
118 err = fdt_setprop(fdt, offset, "mac-address", mac,
121 debug("MAC address set: %pM\n", mac);
126 static int ft_copy_carveout(void *dst, const void *src, const char *node)
128 struct fdt_memory fb;
131 err = fdtdec_get_carveout(src, node, "memory-region", 0, &fb);
133 if (err != -FDT_ERR_NOTFOUND)
134 printf("failed to get carveout for %s: %d\n", node,
140 err = fdtdec_set_carveout(dst, node, "memory-region", 0, "framebuffer",
143 printf("failed to set carveout for %s: %d\n", node, err);
150 static void ft_carveout_setup(void *fdt)
152 const void *cboot_fdt = (const void *)cboot_boot_x0;
153 static const char * const nodes[] = {
154 "/host1x@50000000/dc@54200000",
155 "/host1x@50000000/dc@54240000",
160 for (i = 0; i < ARRAY_SIZE(nodes); i++) {
161 err = ft_copy_carveout(fdt, cboot_fdt, nodes[i]);
163 if (err != -FDT_ERR_NOTFOUND)
164 printf("failed to copy carveout for %s: %d\n",
171 int ft_board_setup(void *fdt, bd_t *bd)
173 ft_mac_address_setup(fdt);
174 ft_carveout_setup(fdt);