From mboxrd@z Thu Jan 1 00:00:00 1970 From: josh.wu@atmel.com (Josh Wu) Date: Thu, 5 Mar 2015 09:52:14 +0800 Subject: [PATCH] ARM: at91: dts: sama5d3/sama5d4: reduce NFC command registers memory region In-Reply-To: <54F72276.8060605@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> Message-ID: <54F7B6CE.8060403@atmel.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, Nicolas On 3/4/2015 11:19 PM, Nicolas Ferre wrote: > Le 15/01/2015 11:05, Boris Brezillon a ?crit : >> Hi Josh, >> >> On Thu, 15 Jan 2015 17:59:15 +0800 >> Josh Wu 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 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/ Best Regards, Josh Wu > > Bye,