Copy Markus who is working on imx27 pinctrl driver.
On Mon, Nov 11, 2013 at 12:03:57PM +0000, Mark Rutland wrote:
> On Mon, Nov 11, 2013 at 10:45:30AM +0000, Chris Ruehl wrote:
> > Hi,
>
> Hi,
>
> While this does involve device tree, it's not strictly a device tree
> problem, and the people best placed to answer your question don't seem
> to be on Cc. You'd get better responses if you used get_maintainer.pl,
> or looked at the commit history of the driver or binding to find people
> likely to be able to help.
>
> I've added Dong Aisheng, Shawn Guo, and Linus Walleij to Cc, as they had
> signed-off-bys on the binding document.
Thanks, Mark.
<snip>
> > while I port the static code to the DT I step into the problem to
> > set the PSCR for the sdhc2 ports to 22k pull-up
Is the code from mainline kernel or private tree? I'm asking because I
do not see non-DT imx27 iomux-v1 driver has interface for setting up
DSCR or PSCR in SYSCTRL block. That's probably why Markus did not
support that in the imx27 pinctrl driver, I guess.
Shawn
> > I look for something like described in
> > pinctrl/fsl,imx-pinctrl.txt
> >
> > the fsl,imx27-pinctrl only say 0/1 dis/enable pull up but not the strength.
> >
> >
> > pinctrl_sdhc2_1: sdhc2-1 {
> > fsl,pins = <
> > MX27_PAD_SD2_D0__SD2_D0 0x1
> > MX27_PAD_SD2_D1__SD2_D1 0x1
> > MX27_PAD_SD2_D2__SD2_D2 0x1
> > MX27_PAD_SD2_D3__SD2_D3 0x1
> > MX27_PAD_SD2_CLK__SD2_CLK 0x1
> > MX27_PAD_SD2_CMD__SD2_CMD 0x1
> > >;
> > };
> >
> > its setup in board specific c-file
> >
> > /* 22k pull-up for sd2 pins */
> > reg = __raw_readw(MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR +
> > MX27_SYS_PSCR));
> > reg &= ~0xfff0;
> > reg |= 0xfff0;
> > __raw_writew(reg, MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR +
> > MX27_SYS_PSCR));
> >
> >
> > Any successions?
> >
> > Regards
> > Chris
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