From: Shawn Guo <shawnguo@kernel.org>
To: Oliver Graute <oliver.graute@gmail.com>
Cc: devicetree@vger.kernel.org, s.hauer@pengutronix.de,
linux-imx@nxp.com, Fabio Estevam <fabio.estevam@nxp.com>,
Anson Huang <Anson.Huang@nxp.com>
Subject: Re: Can't set MX6UL_PAD_LCD_DATA10 register with devicetree
Date: Mon, 8 Oct 2018 14:21:05 +0800 [thread overview]
Message-ID: <20181008062102.GJ3587@dragon> (raw)
In-Reply-To: <20181005124519.GA7699@graute-opti>
Copy NXP folks and list.
On Fri, Oct 05, 2018 at 02:45:19PM +0200, Oliver Graute wrote:
> Hello list,
>
> I try to set the following PAD in my imx6ul devicetree (derived from
> imx6ul-14x14-evk.dts)
>
> MX6UL_PAD_LCD_DATA10__GPIO3_IO15 0x100b0
>
> but after kernel compiling and booting the register value is not
> changed. A readout with devmem2 show me the wrong value.
>
> devmem2 0x020E03CC
> /dev/mem opened.
> Memory mapped at address 0x76fc4000.
> Read at address 0x020E03CC (0x76fc43cc): 0x000010B0
>
> Setting the register manually with devmem2 just works fine.
>
> /usr/bin/devmem2 0x020E03CC w 0x000100B0
>
> other PADs like MX6UL_PAD_GPIO1_IO07__ENET1_MDC I could configure via
> the imx6ul devicetree.
>
> ideas what I'm doing wrong here?
>
> Best Regards,
>
> Oliver
next prev parent reply other threads:[~2018-10-08 13:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-05 12:45 Can't set MX6UL_PAD_LCD_DATA10 register with devicetree Oliver Graute
2018-10-08 6:21 ` Shawn Guo [this message]
2018-10-09 2:55 ` A.s. Dong
2018-10-09 3:27 ` A.s. Dong
2018-10-09 9:15 ` Oliver Graute
2018-10-08 20:22 ` Fabio Estevam
2018-10-09 6:28 ` Oliver Graute
2018-10-09 7:48 ` Vokáč Michal
2018-10-09 9:20 ` Oliver Graute
2018-10-09 11:00 ` Fabio Estevam
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