From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Ferre Subject: Re: [PATCH] ARM: at91: dts: sama5d3/sama5d4: reduce NFC command registers memory region Date: Thu, 5 Mar 2015 10:13:13 +0100 Message-ID: <54F81E29.7010605@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> <54F7B6CE.8060403@atmel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <54F7B6CE.8060403-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Josh Wu , 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 Le 05/03/2015 02:52, Josh Wu a =C3=A9crit : > Hi, Nicolas >=20 > 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, wh= ich 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 0x08000= 000 >>>>>> (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_STAT= US 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 l= ist. >>>> Is it okay for you? >>> Sure, no problem. >> Hi Josh, >> >> What is the status of this patch set? >=20 > 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, --=20 Nicolas Ferre -- 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