[U-Boot] [PATCH] dts: am335x-pdu001: Fix polarity of card detection input

[Felix Brack <fb@ltec.ch>]

Hi Tom,

On 29.11.2018 21:27, Tom Rini wrote:
> On Thu, Nov 29, 2018 at 05:07:47PM +0100, Felix Brack wrote:
>> On 29.11.2018 16:52, Tom Rini wrote:
>>> On Thu, Nov 29, 2018 at 04:33:36PM +0100, Felix Brack wrote:
>>>> On 29.11.2018 16:25, Tom Rini wrote:
>>>>> On Thu, Nov 29, 2018 at 01:45:06PM +0100, Felix Brack wrote:
>>>>>
>>>>>> When a micro SD card is inserted in the PDU001 card cage, the card
>>>>>> detection switch is opened and the corresponding GPIO input is driven
>>>>>> by a pull-up. Hence change the active level of the card detection
>>>>>> input from low to high.
>>>>>>
>>>>>> Signed-off-by: Felix Brack <fb@ltec.ch>
>>>>>> ---
>>>>>>
>>>>>>  arch/arm/dts/am335x-pdu001.dts | 2 +-
>>>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>>>
>>>>>> diff --git a/arch/arm/dts/am335x-pdu001.dts b/arch/arm/dts/am335x-pdu001.dts
>>>>>> index 121e2c6207..3a5e952663 100644
>>>>>> --- a/arch/arm/dts/am335x-pdu001.dts
>>>>>> +++ b/arch/arm/dts/am335x-pdu001.dts
>>>>>> @@ -576,7 +576,7 @@
>>>>>>  	bus-width = <4>;
>>>>>>  	pinctrl-names = "default";
>>>>>>  	pinctrl-0 = <&mmc2_pins>;
>>>>>> -	cd-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
>>>>>> +	cd-gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>;
>>>>>>  };
>>>>>>  
>>>>>>  &sham {
>>>>>
>>>>> Is this in upstream Linux as well?  If so what tag/hash?  Thanks!
>>>>>
>>>> Not yet. I will send the Linux patch within a few days.
>>>> The fix appears for U-Boot first as it is required for the upcoming
>>>> patch that enables CONFIG_BLK and CONFIG_DM_MMC for this board.
>>>
>>> Please reply to the thread with a ML link there so we can track and make
>>> sure it doesn't get out of sync, thanks!
>>> I'm not sure if I got that correctly. What is an 'ML link'?
>> Was there something wrong with my last post or would you like me to post
>> a message in this thread once the patch is in upstream Linux?
> 
> The general preference is that when we touch the dts files that aren't
> U-Boot centric the commit message references the Linux githash/tag it's
> taken from, for easier future re-syncs.  Since you're in progress on
> fixing this in Linux too, you can just reply here so it's at least
> tracked on the ML and archives that the change _is_ going upstream so we
> aren't likely to overwrite it by accident later (and since you'd be the
> one pushing a future re-sync, you'd also notice, so it's really not
> likely to happen).  Thanks!
> 

FYI: with patch https://patchwork.ozlabs.org/patch/1026522/ DTS for this
board is now in identical in U-Boot and Linux.

regards Felix