[U-Boot] [PATCH 2/2] iMX5: EfikaMX: Work-in-progress board support

[Marek Vasut]

On Thursday 13 January 2011 18:46:02 Stefano Babic wrote:
> On 01/13/2011 06:15 PM, Marek Vasut wrote:
> >>> +	mxc_request_iomux(MX51_PIN_NANDF_RB3, IOMUX_CONFIG_GPIO);
> >>> +	mxc_iomux_set_pad(MX51_PIN_NANDF_RB3, PAD_CTL_100K_PU);
> >>> +	mxc_gpio_direction(IOMUX_TO_GPIO(MX51_PIN_NANDF_RB3),
> >>> MXC_GPIO_DIRECTION_IN); +	rev |=
> >>> (!!mxc_gpio_get(IOMUX_TO_GPIO(MX51_PIN_NANDF_RB3))) << 2;
> >> 
> >> Is it ok to leave the NAND pins configured as GPIO, or should they set
> >> back for the NFC controller ?
> > 
> > I don't think there is even NAND used on efikamx. Though I might be
> > mistaken.
> 
> Understood, then I agree to leave the iomux set with gpios.
> 
> >> Replace fix constants with defines, adding them to mc13892.h if they are
> >> missing.
> > 
> > Is any sane datasheet for this thing available ? If so, can you link me
> > to it please?
> 
> There is a datasheet, I do not know if you can consider it "sane" ;-)
> 
> http://cache.freescale.com/files/analog/doc/data_sheet/MC13892.pdf?fpsp=1
> 
> The register description is quite spread in the manual. You can see the
> complete SPI Bitmap on pages 118-121.
> 
> I have already set most constants in include/mc13892.h, probably there
> are some missing.
> 
> >>> +#define	__io
> >> 
> >> I think we have already discussed abot this define. Should it not move
> >> to another file, such as imx-regs.h ? Or is there a better solution ?
> > 
> > The thread where we discussed this got deaf. I tried asking further, but
> > no reply :-(
> 
> Agree, I remember the issue, I do not remember any decision. Anyway, I
> think the position of this macro is wrong. It is related to the
> processor, that can have it or not, and it is not related to the board.
> I see that in u-boot __io is defined in board configuration file, but I
> do not think it is correct.
> 
> At least I will suggest to move this define in the processor related
> file (-->imx-regs.h).

This is a problem, if __io is defined there, it won't be defined in the ide 
driver.
> 
> Cheers,
> Stefano