Hi all, i found an error in my resources struct, and i finally have the driver set loaded,
Still seems i cannot get valid bytes from RTC ds1338. I probably have some HW issue. i2c i2c-0: master_xfer[0] W, addr=0x68, len=1 i2c i2c-0: master_xfer[1] R, addr=0x68, len=7 rtc-ds1307 0-0068: read: 00 00 00 00 00 00 00 rtc-ds1307 0-0068: read secs=0, mins=0, hours=0, mday=0, mon=-1, year=100, wday=-1 rtc-ds1307 0-0068: hctosys: unable to read the hardware clock many thanks to Steven for the driver, and many thanks to all for the help until now, regards, angelo On 25/08/2011 18:37, Viet Nguyen wrote: > On Wed, Aug 24, 2011 at 11:24 PM, angelo <angel...@gmail.com > <mailto: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 _______________________________________________ uClinux-dev mailing list uClinux-dev@uclinux.org http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by uclinux-dev@uclinux.org To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
