From mboxrd@z Thu Jan  1 00:00:00 1970
From: chris.ruehl@gtsys.com.hk (Chris Ruehl)
Date: Wed, 27 Nov 2013 13:19:19 +0800
Subject: [PATCH] pinctrl: imx1-core populate subdevices
In-Reply-To: <529567FB.5090501@gtsys.com.hk>
References: <CACRpkda2dO6DvurEhaTVGJv8nDyEGOEeLCap-_+1e1mHtD0XyQ@mail.gmail.com>	<1384193987-20740-1-git-send-email-mpa@pengutronix.de>
 <CACRpkdaQcY43wnfD_phsi6rCo3oUmOUcei+gb9phyGT7F1iZyA@mail.gmail.com>
 <529567FB.5090501@gtsys.com.hk>
Message-ID: <529580D7.1030505@gtsys.com.hk>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org



On Wednesday, November 27, 2013 11:33 AM, Chris Ruehl wrote:
> On Wednesday, November 20, 2013 04:01 AM, Linus Walleij wrote:
>> On Mon, Nov 11, 2013 at 7:19 PM, Markus Pargmann<mpa@pengutronix.de>
>> wrote:
>>
>>> Support gpio devicetree subnodes to allow a more detailed DT hardware
>>> description.
>>>
>>> Signed-off-by: Markus Pargmann<mpa@pengutronix.de>
>>
>> Looks good to me.
>>
>> Tentatively applied this, the DT people may want to say something
>> about this.
>>
>> Yours,
>> Linus Walleij
>> --
>
> Hi,
>
> I tried the new configuration but the kernel oops when probing the
> dm9000 caused by insufficient resources more likely the real reason
> that somehow the gpio6: triggers a problem
>
>
> [ 0.115718] irq: no irq domain found for
> /soc/aipi at 10000000/iomuxc at 10015000/gpio at 10015500 !
> [ 0.115768] ------------[ cut here ]------------
> [ 0.115853] WARNING: CPU: 0 PID: 1 at drivers/of/platform.c:171
> of_device_alloc+0x110/0x15c()
> [ 0.117824] ---[ end trace 0e10ae727e6e0ab1 ]---
> [ 0.121236] Failed to request board ext/int gpios
> [ 0.152712] imx27-pinctrl 10015000.iomuxc: initialized IMX pinctrl driver
>
>
> iomuxc: iomuxc at 10015000 {
> compatible = "fsl,imx27-iomuxc";
> reg = <0x10015000 0x600>;
> #address-cells = <1>;
> #size-cells = <1>;
> ranges;
>
> gpio1: gpio at 10015000 {
> compatible = "fsl,imx27-gpio", "fsl,imx21-gpio";
> reg = <0x10015000 0x100>;
> interrupts = <8>;
> gpio-controller;
> #gpio-cells = <2>;
> interrupt-controller;
> #interrupt-cells = <2>;
> };
> ...
> gpio6: gpio at 10015500 {
> compatible = "fsl,imx27-gpio", "fsl,imx21-gpio";
> reg = <0x10015500 0x100>;
> interrupts = <8>;
> gpio-controller;
> #gpio-cells = <2>;
> interrupt-controller;
> #interrupt-cells = <2>;
> };
> };
>

More info
board-dts-definition for the dm9000 which trigger the oops

/ {
         model = "GTSYS IR module";
         compatible = "gtsys,mx27gtsir","fsl,imx27";

         memory {
                 reg = <0xa0000000 0x10000000>;
         };

         enet1: ethernet at d4000000 {
                         compatible = "davicom,dm9000";
                         #address-cells = <1>;
                         #size-cells = <1>;
                         reg = <0xd4000000 0x2
                                0xd4000004 0x2>;
                         interrupt-parent = <&gpio6>;
                         interrupts = <18 2>;   /* DM9000IRQ IMX_GPIO_NR(6,18) 2 
= high edge trigger */
                         local-mac-address = [00 00 00 00 00 00];
                         davicom,no-eeprom;
                         status = "okay";
         };


> Kernel Linux version 3.13.0-rc1-next-20131125-dirty
>
> With kind regards
> Chris
>