Re: [PATCH] ARM: at91: dts: sama5d3/sama5d4: reduce NFC command registers memory region

[Nicolas Ferre <nicolas.ferre-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>]

Le 05/03/2015 02:52, Josh Wu a écrit :
> Hi, Nicolas
> 
> On 3/4/2015 11:19 PM, Nicolas Ferre wrote:
>> Le 15/01/2015 11:05, Boris Brezillon a écrit :
>>> Hi Josh,
>>>
>>> On Thu, 15 Jan 2015 17:59:15 +0800
>>> Josh Wu <josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org> wrote:
>>>
>>>> Hi， Boris
>>>>
>>>> Thanks for the review.
>>>>
>>>> On 1/15/2015 4:45 PM, Boris Brezillon wrote:
>>>>> Hi Josh,
>>>>>
>>>>> On Thu, 15 Jan 2015 15:08:03 +0800
>>>>> Josh Wu <josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org> wrote:
>>>>>
>>>>>> To get NFC status, we need to read the NFC command registers, which is a
>>>>>> 256M memory mapping address. To check the status, you just read such
>>>>>> address from NFC command registers.
>>>>>> For example, to check NFCBUSY (bit 27), you need to read 0x08000000
>>>>>> (bit 27 is set to 1) of the NFC command register.
>>>>>> If you want to check NFCBUSY (bit 27) and NFCWR (bit 26) in same time,
>>>>>> you need to read 0x0c000000 (bit 27 and bit 26 are set to 1).
>>>>> Are NFCBUSY and NFCWR found in NFCDATA_STATUS and those found in HSMC_SR
>>>>> representing the same thing.
>>>> yes. it is. I just check with IP team. The NFCBUSY of NFCDATA_STATUS is
>>>> also refer to NFC_BUSY of HSMC_SR.
>>>>
>>>>> If they are, I think you can just use HSMC_SR instead of NFCDATA_STATUS
>>>>> to check the status [1] and drop the last bit in the NFC Command
>>>>> Resgiters range.
>>>> Thank you. your code works (just need some typo change).
>>>> I want to send [1] code with your signed-off and my acked to mtd list.
>>>> Is it okay for you?
>>> Sure, no problem.
>> Hi Josh,
>>
>> What is the status of this patch set?
> 
> The v2 of this patch is sent. But it's not taken by Brain.
> I just ping Brain yesterday. Check the v2 patch here:
> http://patchwork.ozlabs.org/patch/431752/

Ok, thanks for the information Josh.

Bye,
-- 
Nicolas Ferre
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