diff options
Diffstat (limited to 'board/Marvell/mvebu_db-88f3720')
| -rw-r--r-- | board/Marvell/mvebu_db-88f3720/MAINTAINERS | 6 | ||||
| -rw-r--r-- | board/Marvell/mvebu_db-88f3720/Makefile | 7 | ||||
| -rw-r--r-- | board/Marvell/mvebu_db-88f3720/board.c | 134 |
3 files changed, 147 insertions, 0 deletions
diff --git a/board/Marvell/mvebu_db-88f3720/MAINTAINERS b/board/Marvell/mvebu_db-88f3720/MAINTAINERS new file mode 100644 index 0000000000..4e80917c72 --- /dev/null +++ b/board/Marvell/mvebu_db-88f3720/MAINTAINERS @@ -0,0 +1,6 @@ +MVEBU_DB_88F3720 BOARD +M: Stefan Roese <sr@denx.de> +S: Maintained +F: board/Marvell/mvebu_db-88f3720/ +F: include/configs/mvebu_db-88f3720.h +F: configs/mvebu_db-88f3720_defconfig diff --git a/board/Marvell/mvebu_db-88f3720/Makefile b/board/Marvell/mvebu_db-88f3720/Makefile new file mode 100644 index 0000000000..ed39738816 --- /dev/null +++ b/board/Marvell/mvebu_db-88f3720/Makefile @@ -0,0 +1,7 @@ +# +# Copyright (C) 2016 Stefan Roese <sr@denx.de> +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y := board.o diff --git a/board/Marvell/mvebu_db-88f3720/board.c b/board/Marvell/mvebu_db-88f3720/board.c new file mode 100644 index 0000000000..edf88c73e6 --- /dev/null +++ b/board/Marvell/mvebu_db-88f3720/board.c @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2016 Stefan Roese <sr@denx.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <i2c.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <asm/arch/soc.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* IO expander I2C device */ +#define I2C_IO_EXP_ADDR 0x22 +#define I2C_IO_CFG_REG_0 0x6 +#define I2C_IO_DATA_OUT_REG_0 0x2 +#define I2C_IO_REG_0_SATA_OFF 2 +#define I2C_IO_REG_0_USB_H_OFF 1 + +int board_early_init_f(void) +{ + /* Nothing to do (yet), perhaps later some pin-muxing etc */ + + return 0; +} + +int board_init(void) +{ + /* adress of boot parameters */ + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; + + return 0; +} + +/* Board specific AHCI / SATA enable code */ +int board_ahci_enable(void) +{ + struct udevice *dev; + int ret; + u8 buf[8]; + + /* Configure IO exander PCA9555: 7bit address 0x22 */ + ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev); + if (ret) { + printf("Cannot find PCA9555: %d\n", ret); + return 0; + } + + ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1); + if (ret) { + printf("Failed to read IO expander value via I2C\n"); + return -EIO; + } + + /* + * Enable SATA power via IO expander connected via I2C by setting + * the corresponding bit to output mode to enable power for SATA + */ + buf[0] &= ~(1 << I2C_IO_REG_0_SATA_OFF); + ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1); + if (ret) { + printf("Failed to set IO expander via I2C\n"); + return -EIO; + } + + return 0; +} + +/* Board specific xHCI enable code */ +int board_xhci_enable(void) +{ + struct udevice *dev; + int ret; + u8 buf[8]; + + /* Configure IO exander PCA9555: 7bit address 0x22 */ + ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev); + if (ret) { + printf("Cannot find PCA9555: %d\n", ret); + return 0; + } + + printf("Enable USB VBUS\n"); + + /* + * Read configuration (direction) and set VBUS pin as output + * (reset pin = output) + */ + ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1); + if (ret) { + printf("Failed to read IO expander value via I2C\n"); + return -EIO; + } + buf[0] &= ~(1 << I2C_IO_REG_0_USB_H_OFF); + ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1); + if (ret) { + printf("Failed to set IO expander via I2C\n"); + return -EIO; + } + + /* Read VBUS output value and disable it */ + ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1); + if (ret) { + printf("Failed to read IO expander value via I2C\n"); + return -EIO; + } + buf[0] &= ~(1 << I2C_IO_REG_0_USB_H_OFF); + ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1); + if (ret) { + printf("Failed to set IO expander via I2C\n"); + return -EIO; + } + + /* + * Required delay for configuration to settle - must wait for + * power on port is disabled in case VBUS signal was high, + * required 3 seconds delay to let VBUS signal fully settle down + */ + mdelay(3000); + + /* Enable VBUS power: Set output value of VBUS pin as enabled */ + buf[0] |= (1 << I2C_IO_REG_0_USB_H_OFF); + ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1); + if (ret) { + printf("Failed to set IO expander via I2C\n"); + return -EIO; + } + + mdelay(500); /* required delay to let output value settle */ + + return 0; +} |