[PATCH 2/2] mtd: gpmi: only scan two chips for imx6
Huang Shijie
b32955 at freescale.com
Thu Nov 7 22:26:28 EST 2013
于 2013年11月07日 21:22, Fabio Estevam 写道:
> On Thu, Nov 7, 2013 at 7:46 AM, Huang Shijie<b32955 at freescale.com> wrote:
>> We cannot scan two chips for imx23 and imx28:
>> imx23: the Ready-Busy1 line is not connected for some board.
>> imx28: we do not set the pinctrl for Ready-Busy1
>>
>> So we only scan two chips for imx6.
> What happens if Ready-Busy1 line is not connected on some mx6 board?
> You cannot assume that all boards
we will meet a DMA timeout.
All the imx6's boards supporting the gpmi have the RB1 now.
the customer's boards will follow our boards, so their boards also
should have the RB1 line too.
> have this line connected and configured in pinctrl just like you
> mentioned for mx23 and mx28.
Please check the schematics for imx23/imx28/imx6x.
For imx6, the line is OR-combined with the RB0.
For imx23-evk,imx28-evk, the RB1 line is a seperate line, not OR with
the RB0.
and the pinctrls does not have RB1.
thanks
Huang Shijie
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