From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Ruehl Subject: Re: IMX27: How to do 22k pull-up with the pinctrl ? Date: Wed, 13 Nov 2013 12:38:13 +0800 Message-ID: <52830235.3030008@gtsys.com.hk> References: <5280B54A.1050503@gtsys.com.hk> <20131111120357.GE21201@e106331-lin.cambridge.arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20131111120357.GE21201-NuALmloUBlrZROr8t4l/smS4ubULX0JqMm0uRHvK7Nw@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Mark Rutland Cc: "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Dong Aisheng , Shawn Guo , Linus Walleij List-Id: devicetree@vger.kernel.org On Monday, November 11, 2013 08:03 PM, 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. > > Mark. Dear Mark Thanks. I'm late with my answer, my data-center support change switches and forget to told the users about this.. I had no email for a while. Welcome to Hong Kong! > >> >> 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 >> -- >> To unsubscribe from this list: send the line "unsubscribe devicetree" in >> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> -- GTSYS Limited RFID Technology A01 24/F Gold King Industrial Bld 35-41 Tai Lin Pai Road, Kwai Chung, Hong Kong Fax (852) 8167 4060 - Tel (852) 3598 9488 Disclaimer: http://www.gtsys.com.hk/email/classified.html -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html