From: Chris Ruehl <chris.ruehl-CR359r9tUDPXPF5Rlphj1Q@public.gmane.org>
To: "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: IMX27: How to do 22k pull-up with the pinctrl ?
Date: Mon, 11 Nov 2013 18:45:30 +0800 [thread overview]
Message-ID: <5280B54A.1050503@gtsys.com.hk> (raw)
Hi,
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
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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next reply other threads:[~2013-11-11 10:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-11 10:45 Chris Ruehl [this message]
[not found] ` <5280B54A.1050503-CR359r9tUDPXPF5Rlphj1Q@public.gmane.org>
2013-11-11 12:03 ` IMX27: How to do 22k pull-up with the pinctrl ? Mark Rutland
[not found] ` <20131111120357.GE21201-NuALmloUBlrZROr8t4l/smS4ubULX0JqMm0uRHvK7Nw@public.gmane.org>
2013-11-11 14:26 ` Shawn Guo
[not found] ` <20131111142639.GC11083-rvtDTF3kK1ictlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2013-11-11 16:21 ` Markus Pargmann
[not found] ` <20131111162138.GB30263-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2013-11-13 5:57 ` Chris Ruehl
2013-11-13 4:43 ` Chris Ruehl
2013-11-11 14:29 ` Linus Walleij
[not found] ` <CACRpkdatZfGDn-K-PRxCz53AKF+Q4CAwAbA+ufSKnXapZQkPyw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-13 5:50 ` Chris Ruehl
2013-11-13 4:38 ` Chris Ruehl
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