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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2020 BayLibre, SAS * Author: Neil Armstrong <narmstrong@baylibre.com> */ #include <common.h> #include <dm.h> #include <env_internal.h> #include <init.h> #include <net.h> #include <asm/io.h> #include <asm/arch/eth.h> #include <i2c.h> #include "khadas-mcu.h" /* * The VIM3 on-board MCU can mux the PCIe/USB3.0 shared differential * lines using a FUSB340TMX USB 3.1 SuperSpeed Data Switch between * an USB3.0 Type A connector and a M.2 Key M slot. * The PHY driving these differential lines is shared between * the USB3.0 controller and the PCIe Controller, thus only * a single controller can use it. */ int meson_ft_board_setup(void *blob, struct bd_info *bd) { struct udevice *bus, *dev; int node, i2c_node, ret; unsigned int i2c_addr; u32 *val; /* Find I2C device */ node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "khadas,mcu"); if (node < 0) { printf("vim3: cannot find khadas,mcu node\n"); return 0; } /* Get addr */ val = (u32 *)fdt_getprop(gd->fdt_blob, node, "reg", NULL); if (!val) { printf("vim3: cannot find khadas,mcu node i2c addr\n"); return 0; } i2c_addr = fdt32_to_cpu(*val); /* Get i2c device */ i2c_node = fdt_parent_offset(gd->fdt_blob, node); if (node < 0) { printf("vim3: cannot find khadas,mcu i2c node\n"); return 0; } ret = uclass_get_device_by_of_offset(UCLASS_I2C, i2c_node, &bus); if (ret < 0) { printf("vim3: cannot find i2c bus (%d)\n", ret); return 0; } ret = i2c_get_chip(bus, i2c_addr, 1, &dev); if (ret < 0) { printf("vim3: cannot find i2c chip (%d)\n", ret); return 0; } /* Read USB_PCIE_SWITCH_REG */ ret = dm_i2c_reg_read(dev, KHADAS_MCU_USB_PCIE_SWITCH_REG); if (ret < 0) { printf("vim3: failed to read i2c reg (%d)\n", ret); return 0; } debug("MCU_USB_PCIE_SWITCH_REG: %d\n", ret); /* * If in PCIe mode, alter DT * 0：Enable USB3.0，Disable PCIE, 1：Disable USB3.0, Enable PCIE */ if (ret > 0) { static char data[32] __aligned(4); const void *ptmp; int len; /* Find USB node */ node = fdt_node_offset_by_compatible(blob, -1, "amlogic,meson-g12a-usb-ctrl"); if (node < 0) { printf("vim3: cannot find amlogic,meson-g12a-usb-ctrl node\n"); return 0; } /* Update PHY names (mandatory to disable USB3.0) */ len = strlcpy(data, "usb2-phy0", 32) + 1; len += strlcpy(&data[len], "usb2-phy1", 32 - len) + 1; ret = fdt_setprop(blob, node, "phy-names", data, len); if (ret < 0) { printf("vim3: failed to update usb phy names property (%d)\n", ret); return 0; } /* Update PHY list, by keeping the 2 first entries (optional) */ ptmp = fdt_getprop(blob, node, "phys", &len); if (ptmp) { memcpy(data, ptmp, min_t(unsigned int, 2 * sizeof(u32), len)); ret = fdt_setprop(blob, node, "phys", data, min_t(unsigned int, 2 * sizeof(u32), len)); if (ret < 0) printf("vim3: failed to update usb phys property (%d)\n", ret); } else printf("vim3: cannot find usb node phys property\n"); /* Find PCIe node */ node = fdt_node_offset_by_compatible(blob, -1, "amlogic,g12a-pcie"); if (node < 0) { printf("vim3: cannot find amlogic,g12a-pcie node\n"); return 0; } /* Enable PCIe */ len = strlcpy(data, "okay", 32); ret = fdt_setprop(blob, node, "status", data, len); if (ret < 0) { printf("vim3: failed to enable pcie node (%d)\n", ret); return 0; } printf("vim3: successfully enabled PCIe\n"); } return 0; } int misc_init_r(void) { meson_eth_init(PHY_INTERFACE_MODE_RGMII, 0); return 0; } |