From 6f8c2d49060a30cda2ea73e93ce0f882f732754f Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Wed, 25 May 2016 08:21:21 +0200 Subject: arm64: mvebu: Add Armada 7K db-88f7040 development board support This patch adds basic support for the Marvell Armada 7K DB-88F7040 development board. Supported are the following interfaces: - UART - SPI (incl. SPI NOR) - I2C - USB - SATA / AHCI Support for other interfaces will follow. Signed-off-by: Stefan Roese Cc: Nadav Haklai Cc: Neta Zur Hershkovits Cc: Kostya Porotchkin Cc: Omri Itach Cc: Igal Liberman Cc: Haim Boot Cc: Hanna Hawa --- board/Marvell/mvebu_db-88f7040/MAINTAINERS | 6 ++ board/Marvell/mvebu_db-88f7040/Makefile | 7 ++ board/Marvell/mvebu_db-88f7040/board.c | 152 +++++++++++++++++++++++++++++ 3 files changed, 165 insertions(+) create mode 100644 board/Marvell/mvebu_db-88f7040/MAINTAINERS create mode 100644 board/Marvell/mvebu_db-88f7040/Makefile create mode 100644 board/Marvell/mvebu_db-88f7040/board.c (limited to 'board') diff --git a/board/Marvell/mvebu_db-88f7040/MAINTAINERS b/board/Marvell/mvebu_db-88f7040/MAINTAINERS new file mode 100644 index 0000000..820461b --- /dev/null +++ b/board/Marvell/mvebu_db-88f7040/MAINTAINERS @@ -0,0 +1,6 @@ +MVEBU_DB_88F7040 BOARD +M: Stefan Roese +S: Maintained +F: board/Marvell/mvebu_db-88f7040/ +F: include/configs/mvebu_db-88f7040.h +F: configs/mvebu_db-88f7040_defconfig diff --git a/board/Marvell/mvebu_db-88f7040/Makefile b/board/Marvell/mvebu_db-88f7040/Makefile new file mode 100644 index 0000000..ed39738 --- /dev/null +++ b/board/Marvell/mvebu_db-88f7040/Makefile @@ -0,0 +1,7 @@ +# +# Copyright (C) 2016 Stefan Roese +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y := board.o diff --git a/board/Marvell/mvebu_db-88f7040/board.c b/board/Marvell/mvebu_db-88f7040/board.c new file mode 100644 index 0000000..48bd55c --- /dev/null +++ b/board/Marvell/mvebu_db-88f7040/board.c @@ -0,0 +1,152 @@ +/* + * Copyright (C) 2016 Stefan Roese + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/* IO expander I2C device */ +#define I2C_IO_EXP_ADDR 0x21 +#define I2C_IO_CFG_REG_0 0x6 +#define I2C_IO_DATA_OUT_REG_0 0x2 +/* VBus enable */ +#define I2C_IO_REG_0_USB_H0_OFF 0 +#define I2C_IO_REG_0_USB_H1_OFF 1 +#define I2C_IO_REG_VBUS ((1 << I2C_IO_REG_0_USB_H0_OFF) | \ + (1 << I2C_IO_REG_0_USB_H1_OFF)) +/* Current limit */ +#define I2C_IO_REG_0_USB_H0_CL 4 +#define I2C_IO_REG_0_USB_H1_CL 5 +#define I2C_IO_REG_CL ((1 << I2C_IO_REG_0_USB_H0_CL) | \ + (1 << I2C_IO_REG_0_USB_H1_CL)) + +static int usb_enabled = 0; + +/* Board specific xHCI dis-/enable code */ + +/* + * Set USB VBUS signals (via I2C IO expander/GPIO) as output and set + * output value as disabled + * + * Set USB Current Limit signals (via I2C IO expander/GPIO) as output + * and set output value as enabled + */ +int board_xhci_config(void) +{ + struct udevice *dev; + int ret; + u8 buf[8]; + + /* Configure IO exander PCA9555: 7bit address 0x21 */ + ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev); + if (ret) { + printf("Cannot find PCA9555: %d\n", ret); + return 0; + } + + /* + * 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] &= ~I2C_IO_REG_VBUS; + buf[0] &= ~I2C_IO_REG_CL; + 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 output value and configure 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] &= ~I2C_IO_REG_VBUS; + buf[0] |= I2C_IO_REG_CL; + 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; +} + +int board_xhci_enable(void) +{ + struct udevice *dev; + int ret; + u8 buf[8]; + + /* + * This function enables all USB ports simultaniously, + * it only needs to get called once + */ + if (usb_enabled) + return 0; + + /* Configure IO exander PCA9555: 7bit address 0x21 */ + ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev); + if (ret) { + printf("Cannot find PCA9555: %d\n", ret); + return 0; + } + + /* Read VBUS output value */ + 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; + } + + /* Enable VBUS power: Set output value of VBUS pin as enabled */ + buf[0] |= I2C_IO_REG_VBUS; + 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 */ + usb_enabled = 1; + + return 0; +} + +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; +} + +int board_late_init(void) +{ + /* Pre-configure the USB ports (overcurrent, VBus) */ + board_xhci_config(); + + return 0; +} -- cgit v1.1