[U-Boot] [PATCH 21/21] arm: imx: add i.MX6ULL 14x14 EVK board support

[Peng Fan]

Hi Jagan,
On Wed, Sep 07, 2016 at 08:21:07PM +0530, Jagan Teki wrote:
>On Thu, Aug 11, 2016 at 11:32 AM, Peng Fan <van.freenix at gmail.com> wrote:
>> Add i.MX6ULL EVK board support:
>> Add device tree file, which is copied from NXP Linux.
>> Enabled DM_MMC, DM_GPIO, DM_I2C, DM_SPI, PINCTRL, DM_REGULATOR.
>> The uart iomux settings are still keeped in board file.
>>
>> Boot Log:
>> U-Boot 2016.09-rc1-00366-gbb419ef-dirty (Aug 11 2016 - 13:08:58 +0800)
>>
>> CPU:   Freescale i.MX6ULL rev1.0 at 396MHz
>> CPU:   Commercial temperature grade (0C to 95C) at 15C
>> Reset cause: POR
>> Model: Freescale i.MX6 ULL 14x14 EVK Board
>> Board: MX6ULL 14x14 EVK
>> DRAM:  512 MiB
>> MMC:   initialized IMX pinctrl driver
>> FSL_SDHC: 0, FSL_SDHC: 1
>
><snip>
>
>> diff --git a/board/freescale/mx6ullevk/mx6ullevk.c b/board/freescale/mx6ullevk/mx6ullevk.c
>> new file mode 100644
>> index 0000000..489bf21
>> --- /dev/null
>> +++ b/board/freescale/mx6ullevk/mx6ullevk.c
>> @@ -0,0 +1,99 @@
>> +/*
>> + * Copyright (C) 2016 Freescale Semiconductor, Inc.
>> + *
>> + * SPDX-License-Identifier:    GPL-2.0+
>> + */
>> +
>> +#include <asm/arch/clock.h>
>> +#include <asm/arch/iomux.h>
>> +#include <asm/arch/imx-regs.h>
>> +#include <asm/arch/crm_regs.h>
>> +#include <asm/arch/mx6-pins.h>
>> +#include <asm/arch/sys_proto.h>
>> +#include <asm/gpio.h>
>> +#include <asm/imx-common/iomux-v3.h>
>> +#include <asm/imx-common/boot_mode.h>
>> +#include <asm/io.h>
>> +#include <common.h>
>> +#include <fsl_esdhc.h>
>> +#include <linux/sizes.h>
>> +#include <mmc.h>
>> +
>> +DECLARE_GLOBAL_DATA_PTR;
>> +
>> +#define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |            \
>> +       PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
>> +       PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
>> +
>> +int dram_init(void)
>> +{
>> +       gd->ram_size = imx_ddr_size();
>> +
>> +       return 0;
>> +}
>> +
>> +static iomux_v3_cfg_t const uart1_pads[] = {
>> +       MX6_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
>> +       MX6_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
>> +};
>> +
>> +static void setup_iomux_uart(void)
>> +{
>> +       imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
>> +}
>> +
>> +int board_mmc_get_env_dev(int devno)
>> +{
>> +       return devno;
>> +}
>> +
>> +int mmc_map_to_kernel_blk(int devno)
>> +{
>> +       return devno;
>> +}
>> +
>> +int board_early_init_f(void)
>> +{
>> +       setup_iomux_uart();
>
>Don't we need iomux settings for sdhc? I guess pinctrl for SD not
>supporting now.

The pinctrl driver will configure the pinmux, no need to add iomux settings
in board file. In this patchset, I enabled PINCTRL, DM_MMC, DM_GPIO and etc.

Thanks,
Peng.

>
>thanks!
>-- 
>Jagan Teki
>Free Software Engineer | www.openedev.com
>U-Boot, Linux | Upstream Maintainer
>Hyderabad, India.