From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josh Wu Subject: Re: [PATCH] ARM: at91: dts: sama5d3/sama5d4: reduce NFC command registers memory region Date: Thu, 5 Mar 2015 09:52:14 +0800 Message-ID: <54F7B6CE.8060403@atmel.com> References: <1421305683-8739-1-git-send-email-josh.wu@atmel.com> <20150115094527.3fde882a@bbrezillon> <54B78F73.9000504@atmel.com> <20150115110501.53b4584c@bbrezillon> <54F72276.8060605@atmel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <54F72276.8060605-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Nicolas Ferre , Boris Brezillon Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Alexandre Belloni , Jean-Christophe Plagniol-Villard List-Id: devicetree@vger.kernel.org Hi, Nicolas On 3/4/2015 11:19 PM, Nicolas Ferre wrote: > Le 15/01/2015 11:05, Boris Brezillon a =C3=A9crit : >> Hi Josh, >> >> On Thu, 15 Jan 2015 17:59:15 +0800 >> Josh Wu wrote: >> >>> Hi=EF=BC=8C 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 wrote: >>>> >>>>> To get NFC status, we need to read the NFC command registers, whi= ch is a >>>>> 256M memory mapping address. To check the status, you just read s= uch >>>>> address from NFC command registers. >>>>> For example, to check NFCBUSY (bit 27), you need to read 0x080000= 00 >>>>> (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 H= SMC_SR >>>> representing the same thing. >>> yes. it is. I just check with IP team. The NFCBUSY of NFCDATA_STATU= S is >>> also refer to NFC_BUSY of HSMC_SR. >>> >>>> If they are, I think you can just use HSMC_SR instead of NFCDATA_S= TATUS >>>> 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 li= st. >>> 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/ Best Regards, Josh Wu > > Bye, -- To unsubscribe from this list: send the line "unsubscribe devicetree" i= n the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html