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Date: Fri, 8 Nov 2013 11:26:28 +0800
From: Huang Shijie <b32955@freescale.com>
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To: Fabio Estevam <festevam@gmail.com>
Subject: Re: [PATCH 2/2] mtd: gpmi: only scan two chips for imx6
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=E4=BA=8E 2013=E5=B9=B411=E6=9C=8807=E6=97=A5 21:22, Fabio Estevam =E5=86=
=99=E9=81=93:
> On Thu, Nov 7, 2013 at 7:46 AM, Huang Shijie<b32955@freescale.com>  wro=
te:
>> 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=20
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=20
the RB0.
     and the pinctrls does not have RB1.

thanks
Huang Shijie