linux-kernel - Re: [PATCH 3/3] ARM: pxa168/teton bga: add board support for i2c and rtc-ds1337

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Date:	Wed, 8 Sep 2010 17:54:15 +0200
From:	Marek Vasut <marek.vasut@...il.com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Haojian Zhuang <haojian.zhuang@...il.com>,
	"Mark F. Brown" <mark.brown314@...il.com>,
	Eric Miao <eric.y.miao@...il.com>,
	Haojian Zhuang <haojian.zhuang@...vell.com>,
	"linux-kernel" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] ARM: pxa168/teton bga: add board support for i2c and rtc-ds1337

Dne St 8. září 2010 07:34:24 Haojian Zhuang napsal(a):
> On Wed, Sep 8, 2010 at 10:56 AM, Mark F. Brown <mark.brown314@...il.com> 
wrote:
> > Signed-off-by: Mark F. Brown <mark.brown314@...il.com>
> > ---
> >  arch/arm/mach-mmp/teton_bga.c |   10 ++++++++++
> >  1 files changed, 10 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/arm/mach-mmp/teton_bga.c
> > b/arch/arm/mach-mmp/teton_bga.c index bbeda5c..8e5801c 100644
> > --- a/arch/arm/mach-mmp/teton_bga.c
> > +++ b/arch/arm/mach-mmp/teton_bga.c
> > @@ -22,6 +22,7 @@
> >  #include <mach/gpio.h>
> >  #include <linux/input.h>
> >  #include <plat/pxa27x_keypad.h>
> > +#include <linux/i2c.h>
> > 
> >  #include "common.h"
> > 
> > @@ -35,6 +36,10 @@ static unsigned long teton_bga_pin_config[] __initdata
> > = { GPIO110_KP_MKIN0,
> >        GPIO111_KP_MKOUT7,
> >        GPIO112_KP_MKOUT6,
> > +
> > +       /* i2c bus */
> > +       GPIO105_CI2C_SDA,
> > +       GPIO106_CI2C_SCL,
> >  };
> > 
> >  static unsigned int teton_bga_matrix_key_map[] = {
> > @@ -52,6 +57,10 @@ static struct pxa27x_keypad_platform_data
> > teton_bga_keypad_info __initdata = { .debounce_interval      = 30,
> >  };
> > 
> > +static struct i2c_board_info teton_bga_i2c_info[] __initdata = {
> > +       { I2C_BOARD_INFO("ds1337", 0x68), },
> > +};
> > +
> 
> I don't have the schematic of teton. But RTC chips should always has
> an irq pin. Is it also connected in your platform?

I think this one doesn't, but I haven't checked.

Cheers

> 
> >  static void __init teton_bga_init(void)
> >  {
> >        mfp_config(ARRAY_AND_SIZE(teton_bga_pin_config));
> > @@ -59,6 +68,7 @@ static void __init teton_bga_init(void)
> >        /* on-chip devices */
> >        pxa168_add_uart(1);
> >        pxa168_add_keypad(&teton_bga_keypad_info);
> > +       pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(teton_bga_i2c_info));
> >  }
> > 
> >  MACHINE_START(TETON_BGA, "PXA168-based Teton BGA Development Platform")
> > --
> > 1.7.0.4
> > 
> > --
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