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

Felix Brack fb at ltec.ch
Thu Nov 29 15:33:36 UTC 2018


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 at 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.

regards, Felix


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