linux-kernel - Re: [RESEND PATCH] ARM: dts: bcm28155-ap: Fix Card Detection GPIO

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Date:	Wed, 8 Jan 2014 16:54:19 -0800
From:	Christian Daudt <bcm@...thebug.org>
To:	Tim Kryger <tim.kryger@...aro.org>
Cc:	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Broadcom Kernel Feedback List 
	<bcm-kernel-feedback-list@...adcom.com>,
	Device Tree List <devicetree@...r.kernel.org>,
	Linux Arm Kernel List <linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linaro Patches <patches@...aro.org>
Subject: Re: [RESEND PATCH] ARM: dts: bcm28155-ap: Fix Card Detection GPIO

On Wed, Jan 8, 2014 at 4:28 PM, Tim Kryger <tim.kryger@...aro.org> wrote:
> On Wed, Jan 8, 2014 at 3:38 PM, Christian Daudt <bcm@...thebug.org> wrote:
>> On Tue, Jan 7, 2014 at 10:53 AM, Tim Kryger <tim.kryger@...aro.org> wrote:
>>> The board schematic states that the "SD_CARD_DET_N gets pulled to GND
>>> when card is inserted" so the polarity has been updated to active low.
>>>
>>> Polarity is now specified with a GPIO define instead of a magic number.
>>>
>>> Signed-off-by: Tim Kryger <tim.kryger@...aro.org>
>>> Reviewed-by: Matt Porter <matt.porter@...aro.org>
>>> ---
>>>  arch/arm/boot/dts/bcm28155-ap.dts | 4 +++-
>>>  1 file changed, 3 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/arch/arm/boot/dts/bcm28155-ap.dts b/arch/arm/boot/dts/bcm28155-ap.dts
>>> index 08e47c2..27dd110 100644
>>> --- a/arch/arm/boot/dts/bcm28155-ap.dts
>>> +++ b/arch/arm/boot/dts/bcm28155-ap.dts
>>> @@ -13,6 +13,8 @@
>>>
>>>  /dts-v1/;
>>>
>>> +#include <dt-bindings/gpio/gpio.h>
>>> +
>>>  #include "bcm11351.dtsi"
>>>
>>>  / {
>>> @@ -40,7 +42,7 @@
>>>
>>>         sdio4: sdio@...b0000 {
>>>                 max-frequency = <48000000>;
>>> -               cd-gpios = <&gpio 14 0>;
>>> +               cd-gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
>>>                 status = "okay";
>>>         };
>>>  };
>>> --
>>> 1.8.0.1
>>>
>> Tim,
>>  Does bcm11351-brt not also suffer from the same bug? If it does can
>> you pls update the patch to also fix it?
>>
>>  Thanks,
>>    csd
>
> The BRT and AP boards are similar so it may have the same problem but
> I don't have a BRT and wouldn't be able to test any changes to its DTS
> file.
>
> -Tim

[sorry for the resend for those that get it twice]
Agreed - it's time that dts file go away. In this case:
Acked-by: Christian Daudt <bcm@...thebug.org>

Olof - can you pls pull in this patch. This is the bugfix that was
discussed in irc earlier today.

 thanks,
   csd
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