On Monday, November 11, 2013 10:26 PM, Shawn Guo wrote:
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
Hi Shawn,
I work on a private tree using the 3.12-next source as my base. Mainboard is a
new design using for RFID integrated readers. I include almost all available
features from the imx27.
OTG, USB2, SPI, I2C, MMC, DM9000 ..
To set the pull-strength would be a great thing.
Chris
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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