On Wed, Aug 24, 2011 at 11:24 PM, angelo <angel...@gmail.com> wrote:
>
> 1- The device rtc0 must be created from genromfs ? I see some boards that
> have CONFIG_RTC_HCTOSYS_DEVICE="rtc0" but create a "rtc" instade, with any
> number.
>
> 2 - Do i hae to add some static structure in my board.c to enable rtc
> ds1307 driver ? Do you have a sample ?
>
1. rtc0 device node should be created in order to use hwclock, you don't
need to create i2c device note by the way.
2. You must register your platform devices:
static struct platform_device rtc_dev_ = {
.name = "rtc-ds1307",
.id = -1,
};
static struct resource i2c_res_[] = {
{
.start = MCFI2C_IOBASE,
.end = MCFI2C_IOBASE + MCFI2C_IOSIZE - 1,
.flags = IORESOURCE_MEM,
},
{
.start = MCFINT_VECBASE + MCFINT_I2C,
.end = MCFINT_VECBASE + MCFINT_I2C,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device i2c_dev_ = {
.name = "mcfi2c",
.id = 0,
.num_resources = ARRAY_SIZE(i2c_res_),
.resource = i2c_res_,
};
static struct i2c_board_info __initdata i2c_info_[] = {
{
I2C_BOARD_INFO("ds1338", 0x68),
},
};
static struct platform_device *devices_[] __initdata = {
&rtc_dev_,
&i2c_dev_,
};
...
in your arch_init:
i2c_register_board_info(0, i2c_info_, ARRAY_SIZE(i2c_info_));
platform_add_devices(devices_, ARRAY_SIZE(devices_));
PS: I used i2c driver of Steven King
Regrads,
--
Nguyen Quoc Viet
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