From 0c5e26678b18e136c1514bf769a16060ae1b5ff8 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Thu, 26 Sep 2013 22:59:25 -0300 Subject: udoo: Add initial support for mx6q udoo board Add basic support for mx6q udoo board. For further information about Udoo board: http://www.udoo.org/ Tested booting a mainline device tree kernel and a Yocto rootfs from mmc. Signed-off-by: Fabio Estevam --- board/udoo/Makefile | 26 +++++++++++++ board/udoo/udoo.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 136 insertions(+) create mode 100644 board/udoo/Makefile create mode 100644 board/udoo/udoo.c (limited to 'board/udoo') diff --git a/board/udoo/Makefile b/board/udoo/Makefile new file mode 100644 index 0000000000..1f0f6c760f --- /dev/null +++ b/board/udoo/Makefile @@ -0,0 +1,26 @@ +# +# (C) Copyright 2013 Freescale Semiconductor, Inc. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(BOARD).o + +COBJS := udoo.o + +SRCS := $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) + +$(LIB): $(obj).depend $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/board/udoo/udoo.c b/board/udoo/udoo.c new file mode 100644 index 0000000000..e9d63750a8 --- /dev/null +++ b/board/udoo/udoo.c @@ -0,0 +1,110 @@ +/* + * Copyright (C) 2013 Freescale Semiconductor, Inc. + * + * Author: Fabio Estevam + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ + PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ + PAD_CTL_SRE_FAST | PAD_CTL_HYS) + +#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \ + PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ + PAD_CTL_SRE_FAST | PAD_CTL_HYS) + +#define WDT_EN IMX_GPIO_NR(5, 4) +#define WDT_TRG IMX_GPIO_NR(3, 19) + +int dram_init(void) +{ + gd->ram_size = (phys_size_t)CONFIG_DDR_MB * 1024 * 1024; + + return 0; +} + +static iomux_v3_cfg_t const uart2_pads[] = { + MX6_PAD_EIM_D26__UART2_TXD | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_EIM_D27__UART2_RXD | MUX_PAD_CTRL(UART_PAD_CTRL), +}; + +static iomux_v3_cfg_t const usdhc3_pads[] = { + MX6_PAD_SD3_CLK__USDHC3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_CMD__USDHC3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), +}; + +static iomux_v3_cfg_t const wdog_pads[] = { + MX6_PAD_EIM_A24__GPIO_5_4 | MUX_PAD_CTRL(NO_PAD_CTRL), + MX6_PAD_EIM_D19__GPIO_3_19, +}; + +static void setup_iomux_uart(void) +{ + imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads)); +} + +static void setup_iomux_wdog(void) +{ + imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads)); + gpio_direction_output(WDT_TRG, 0); + gpio_direction_output(WDT_EN, 1); +} + +static struct fsl_esdhc_cfg usdhc_cfg = { USDHC3_BASE_ADDR }; + +int board_mmc_getcd(struct mmc *mmc) +{ + return 1; /* Always present */ +} + +int board_mmc_init(bd_t *bis) +{ + imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads)); + usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); + usdhc_cfg.max_bus_width = 4; + + return fsl_esdhc_initialize(bis, &usdhc_cfg); +} + +int board_early_init_f(void) +{ + setup_iomux_wdog(); + setup_iomux_uart(); + + return 0; +} + +int board_init(void) +{ + /* address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + + return 0; +} + +int checkboard(void) +{ + puts("Board: Udoo\n"); + + return 0; +} -- cgit v1.2.1