mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-29 06:13:45 +09:00
c5330ae8c8
Modify the file names and deifinitions relater to Marvell db-77f3720 board support. Convert these names to more generic armada-37xx platform for future addition of more boards based on the same SoC family. Signed-off-by: Konstantin Porotchkin <kostap@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Igal Liberman <igall@marvell.com> Cc: Nadav Haklai <nadavh@marvell.com> Signed-off-by: Stefan Roese <sr@denx.de>
135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
/*
|
|
* 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;
|
|
}
|