1 /* 2 * Copyright (C) 2016 Stefan Roese <sr@denx.de> 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <dm.h> 9 #include <i2c.h> 10 #include <phy.h> 11 #include <asm/io.h> 12 #include <asm/arch/cpu.h> 13 #include <asm/arch/soc.h> 14 15 DECLARE_GLOBAL_DATA_PTR; 16 17 /* IO expander I2C device */ 18 #define I2C_IO_EXP_ADDR 0x22 19 #define I2C_IO_CFG_REG_0 0x6 20 #define I2C_IO_DATA_OUT_REG_0 0x2 21 #define I2C_IO_REG_0_SATA_OFF 2 22 #define I2C_IO_REG_0_USB_H_OFF 1 23 24 /* The pin control values are the same for DB and Espressobin */ 25 #define PINCTRL_NB_REG_VALUE 0x000173fa 26 #define PINCTRL_SB_REG_VALUE 0x00007a23 27 28 /* Ethernet switch registers */ 29 /* SMI addresses for multi-chip mode */ 30 #define MVEBU_PORT_CTRL_SMI_ADDR(p) (16 + (p)) 31 #define MVEBU_SW_G2_SMI_ADDR (28) 32 33 /* Multi-chip mode */ 34 #define MVEBU_SW_SMI_DATA_REG (1) 35 #define MVEBU_SW_SMI_CMD_REG (0) 36 #define SW_SMI_CMD_REG_ADDR_OFF 0 37 #define SW_SMI_CMD_DEV_ADDR_OFF 5 38 #define SW_SMI_CMD_SMI_OP_OFF 10 39 #define SW_SMI_CMD_SMI_MODE_OFF 12 40 #define SW_SMI_CMD_SMI_BUSY_OFF 15 41 42 /* Single-chip mode */ 43 /* Switch Port Registers */ 44 #define MVEBU_SW_LINK_CTRL_REG (1) 45 #define MVEBU_SW_PORT_CTRL_REG (4) 46 47 /* Global 2 Registers */ 48 #define MVEBU_G2_SMI_PHY_CMD_REG (24) 49 #define MVEBU_G2_SMI_PHY_DATA_REG (25) 50 51 int board_early_init_f(void) 52 { 53 const void *blob = gd->fdt_blob; 54 const char *bank_name; 55 const char *compat = "marvell,armada-3700-pinctl"; 56 int off, len; 57 void __iomem *addr; 58 59 /* FIXME 60 * Temporary WA for setting correct pin control values 61 * until the real pin control driver is awailable. 62 */ 63 off = fdt_node_offset_by_compatible(blob, -1, compat); 64 while (off != -FDT_ERR_NOTFOUND) { 65 bank_name = fdt_getprop(blob, off, "bank-name", &len); 66 addr = (void __iomem *)fdtdec_get_addr_size_auto_noparent( 67 blob, off, "reg", 0, NULL, true); 68 if (!strncmp(bank_name, "armada-3700-nb", len)) 69 writel(PINCTRL_NB_REG_VALUE, addr); 70 else if (!strncmp(bank_name, "armada-3700-sb", len)) 71 writel(PINCTRL_SB_REG_VALUE, addr); 72 73 off = fdt_node_offset_by_compatible(blob, off, compat); 74 } 75 76 return 0; 77 } 78 79 int board_init(void) 80 { 81 /* adress of boot parameters */ 82 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; 83 84 return 0; 85 } 86 87 /* Board specific AHCI / SATA enable code */ 88 int board_ahci_enable(void) 89 { 90 struct udevice *dev; 91 int ret; 92 u8 buf[8]; 93 94 /* Only DB requres this configuration */ 95 if (!of_machine_is_compatible("marvell,armada-3720-db")) 96 return 0; 97 98 /* Configure IO exander PCA9555: 7bit address 0x22 */ 99 ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev); 100 if (ret) { 101 printf("Cannot find PCA9555: %d\n", ret); 102 return 0; 103 } 104 105 ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1); 106 if (ret) { 107 printf("Failed to read IO expander value via I2C\n"); 108 return -EIO; 109 } 110 111 /* 112 * Enable SATA power via IO expander connected via I2C by setting 113 * the corresponding bit to output mode to enable power for SATA 114 */ 115 buf[0] &= ~(1 << I2C_IO_REG_0_SATA_OFF); 116 ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1); 117 if (ret) { 118 printf("Failed to set IO expander via I2C\n"); 119 return -EIO; 120 } 121 122 return 0; 123 } 124 125 /* Board specific xHCI enable code */ 126 int board_xhci_enable(void) 127 { 128 struct udevice *dev; 129 int ret; 130 u8 buf[8]; 131 132 /* Only DB requres this configuration */ 133 if (!of_machine_is_compatible("marvell,armada-3720-db")) 134 return 0; 135 136 /* Configure IO exander PCA9555: 7bit address 0x22 */ 137 ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev); 138 if (ret) { 139 printf("Cannot find PCA9555: %d\n", ret); 140 return 0; 141 } 142 143 printf("Enable USB VBUS\n"); 144 145 /* 146 * Read configuration (direction) and set VBUS pin as output 147 * (reset pin = output) 148 */ 149 ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1); 150 if (ret) { 151 printf("Failed to read IO expander value via I2C\n"); 152 return -EIO; 153 } 154 buf[0] &= ~(1 << I2C_IO_REG_0_USB_H_OFF); 155 ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1); 156 if (ret) { 157 printf("Failed to set IO expander via I2C\n"); 158 return -EIO; 159 } 160 161 /* Read VBUS output value and disable it */ 162 ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1); 163 if (ret) { 164 printf("Failed to read IO expander value via I2C\n"); 165 return -EIO; 166 } 167 buf[0] &= ~(1 << I2C_IO_REG_0_USB_H_OFF); 168 ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1); 169 if (ret) { 170 printf("Failed to set IO expander via I2C\n"); 171 return -EIO; 172 } 173 174 /* 175 * Required delay for configuration to settle - must wait for 176 * power on port is disabled in case VBUS signal was high, 177 * required 3 seconds delay to let VBUS signal fully settle down 178 */ 179 mdelay(3000); 180 181 /* Enable VBUS power: Set output value of VBUS pin as enabled */ 182 buf[0] |= (1 << I2C_IO_REG_0_USB_H_OFF); 183 ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1); 184 if (ret) { 185 printf("Failed to set IO expander via I2C\n"); 186 return -EIO; 187 } 188 189 mdelay(500); /* required delay to let output value settle */ 190 191 return 0; 192 } 193 194 /* Helper function for accessing switch devices in multi-chip connection mode */ 195 static int mii_multi_chip_mode_write(struct mii_dev *bus, int dev_smi_addr, 196 int smi_addr, int reg, u16 value) 197 { 198 u16 smi_cmd = 0; 199 200 if (bus->write(bus, dev_smi_addr, 0, 201 MVEBU_SW_SMI_DATA_REG, value) != 0) { 202 printf("Error writing to the PHY addr=%02x reg=%02x\n", 203 smi_addr, reg); 204 return -EFAULT; 205 } 206 207 smi_cmd = (1 << SW_SMI_CMD_SMI_BUSY_OFF) | 208 (1 << SW_SMI_CMD_SMI_MODE_OFF) | 209 (1 << SW_SMI_CMD_SMI_OP_OFF) | 210 (smi_addr << SW_SMI_CMD_DEV_ADDR_OFF) | 211 (reg << SW_SMI_CMD_REG_ADDR_OFF); 212 if (bus->write(bus, dev_smi_addr, 0, 213 MVEBU_SW_SMI_CMD_REG, smi_cmd) != 0) { 214 printf("Error writing to the PHY addr=%02x reg=%02x\n", 215 smi_addr, reg); 216 return -EFAULT; 217 } 218 219 return 0; 220 } 221 222 /* Bring-up board-specific network stuff */ 223 int board_network_enable(struct mii_dev *bus) 224 { 225 if (!of_machine_is_compatible("marvell,armada-3720-espressobin")) 226 return 0; 227 228 /* 229 * FIXME: remove this code once Topaz driver gets available 230 * A3720 Community Board Only 231 * Configure Topaz switch (88E6341) 232 * Set port 0,1,2,3 to forwarding Mode (through Switch Port registers) 233 */ 234 mii_multi_chip_mode_write(bus, 1, MVEBU_PORT_CTRL_SMI_ADDR(0), 235 MVEBU_SW_PORT_CTRL_REG, 0x7f); 236 mii_multi_chip_mode_write(bus, 1, MVEBU_PORT_CTRL_SMI_ADDR(1), 237 MVEBU_SW_PORT_CTRL_REG, 0x7f); 238 mii_multi_chip_mode_write(bus, 1, MVEBU_PORT_CTRL_SMI_ADDR(2), 239 MVEBU_SW_PORT_CTRL_REG, 0x7f); 240 mii_multi_chip_mode_write(bus, 1, MVEBU_PORT_CTRL_SMI_ADDR(3), 241 MVEBU_SW_PORT_CTRL_REG, 0x7f); 242 243 /* RGMII Delay on Port 0 (CPU port), force link to 1000Mbps */ 244 mii_multi_chip_mode_write(bus, 1, MVEBU_PORT_CTRL_SMI_ADDR(0), 245 MVEBU_SW_LINK_CTRL_REG, 0xe002); 246 247 /* Power up PHY 1, 2, 3 (through Global 2 registers) */ 248 mii_multi_chip_mode_write(bus, 1, MVEBU_SW_G2_SMI_ADDR, 249 MVEBU_G2_SMI_PHY_DATA_REG, 0x1140); 250 mii_multi_chip_mode_write(bus, 1, MVEBU_SW_G2_SMI_ADDR, 251 MVEBU_G2_SMI_PHY_CMD_REG, 0x9620); 252 mii_multi_chip_mode_write(bus, 1, MVEBU_SW_G2_SMI_ADDR, 253 MVEBU_G2_SMI_PHY_CMD_REG, 0x9640); 254 mii_multi_chip_mode_write(bus, 1, MVEBU_SW_G2_SMI_ADDR, 255 MVEBU_G2_SMI_PHY_CMD_REG, 0x9660); 256 257 return 0; 258 } 259