[PATCH v5 1/4] ARM: add GPMI support for imx23/imx28

Shawn Guo shawn.guo at freescale.com
Wed Apr 13 07:43:05 EDT 2011 

On Wed, Apr 13, 2011 at 02:24:38PM +0800, Huang Shijie wrote:
> add the clock and iomux initialization for GPMI in the imx23 and imx28.
> and register the gpmi driver.
> 
> Signed-off-by: Huang Shijie <b32955 at freescale.com>
> ---
>  arch/arm/mach-mxs/Kconfig                       |    2 +
>  arch/arm/mach-mxs/clock-mx23.c                  |    3 +
>  arch/arm/mach-mxs/clock-mx28.c                  |    3 +
>  arch/arm/mach-mxs/devices-mx23.h                |    3 +
>  arch/arm/mach-mxs/devices-mx28.h                |    3 +
>  arch/arm/mach-mxs/devices/Kconfig               |    3 +
>  arch/arm/mach-mxs/devices/Makefile              |    1 +
>  arch/arm/mach-mxs/devices/platform-gpmi.c       |  134 +++++++++++++++++++++++
>  arch/arm/mach-mxs/include/mach/devices-common.h |    4 +
>  arch/arm/mach-mxs/include/mach/gpmi-nfc.h       |   65 +++++++++++
>  arch/arm/mach-mxs/mach-mx23evk.c                |   37 ++++++
>  arch/arm/mach-mxs/mach-mx28evk.c                |   37 ++++++
>  12 files changed, 295 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/mach-mxs/devices/platform-gpmi.c
>  create mode 100644 arch/arm/mach-mxs/include/mach/gpmi-nfc.h
> 
[...]
> diff --git a/arch/arm/mach-mxs/devices/platform-gpmi.c b/arch/arm/mach-mxs/devices/platform-gpmi.c
> new file mode 100644
> index 0000000..74ebe22
> --- /dev/null
> +++ b/arch/arm/mach-mxs/devices/platform-gpmi.c
> @@ -0,0 +1,134 @@
> +/*
> + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +#include <asm/sizes.h>
> +#include <mach/mx23.h>
> +#include <mach/mx28.h>
> +#include <mach/gpmi-nfc.h>
> +#include <mach/devices-common.h>

devices-common.h already includes gpmi-nfc.h

[...]
> diff --git a/arch/arm/mach-mxs/include/mach/gpmi-nfc.h b/arch/arm/mach-mxs/include/mach/gpmi-nfc.h
> new file mode 100644
> index 0000000..cf8e8c3
> --- /dev/null
> +++ b/arch/arm/mach-mxs/include/mach/gpmi-nfc.h
> @@ -0,0 +1,65 @@
> +/*
> + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +
> +#ifndef __INCLUDE_LINUX_DEVICE_H
> +#define __INCLUDE_LINUX_DEVICE_H

__INCLUDE_LINUX_DEVICE_H is too generic to protect the inclusion of
gpmi-nfc.h 

[...]
> diff --git a/arch/arm/mach-mxs/mach-mx23evk.c b/arch/arm/mach-mxs/mach-mx23evk.c
> index a66994f..db715f9 100644
> --- a/arch/arm/mach-mxs/mach-mx23evk.c
> +++ b/arch/arm/mach-mxs/mach-mx23evk.c
> @@ -34,6 +34,42 @@ static const iomux_cfg_t mx23evk_pads[] __initconst = {
>  	MX23_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
>  	MX23_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
>  
> +	/* gpmi */
> +	MX23_PAD_GPMI_D00__GPMI_D00 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),

You can use MXS_PAD_CTRL here.

> +	MX23_PAD_GPMI_D01__GPMI_D01 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_D02__GPMI_D02 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_D03__GPMI_D03 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_D04__GPMI_D04 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_D05__GPMI_D05 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_D06__GPMI_D06 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_D07__GPMI_D07 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_CLE__GPMI_CLE |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_ALE__GPMI_ALE |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_WPN__GPMI_WPN |
> +		(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_WRN__GPMI_WRN |
> +		(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_RDN__GPMI_RDN |
> +		(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_RDY0__GPMI_RDY0 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_RDY1__GPMI_RDY1 |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_CE0N__GPMI_CE0N |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +	MX23_PAD_GPMI_CE1N__GPMI_CE1N |
> +		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
> +

mmc (ssp) has pin conflict with gpmi on both mx23evk and mx28evk.

Uwe,

How do you usually handle such pin conflicts on board?

>  	/* auart */
>  	MX23_PAD_AUART1_RX__AUART1_RX | MXS_PAD_CTRL,
>  	MX23_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
> @@ -108,6 +144,7 @@ static void __init mx23evk_init(void)
>  	mxs_iomux_setup_multiple_pads(mx23evk_pads, ARRAY_SIZE(mx23evk_pads));
>  
>  	mx23_add_duart();
> +	mx23_add_gpmi();
>  	mx23_add_auart0();
>  
Can you please add gpmi stuff like this and pad configuration at the
end to reflect the order that devices get supported?

>  	ret = gpio_request_one(MX23EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
> diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
> index 08002d0..cf8ddcb 100644
> --- a/arch/arm/mach-mxs/mach-mx28evk.c
> +++ b/arch/arm/mach-mxs/mach-mx28evk.c
Ditto

-- 
Regards,
Shawn

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