From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A4FAC433F5 for ; Tue, 28 Sep 2021 12:55:22 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6E3A7611CC for ; Tue, 28 Sep 2021 12:55:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6E3A7611CC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=eJ5M0Y8QXmTt6Pzbq8EfAkWEqb8RhY4pGfUkkQzXTxQ=; b=GkGslMj/O6kzY+ QT+dZsGb+uRjVsDwcBu32n81ZhRY4oYB8UkuPaZULFERKVzFE6Je0iAmjvKDiZFGrNeaGQlIgSSod I2+Y0zY0ZqmcMxjEbkYcnCrTtYQntN5mf7fQMMkw+1fc/+ia5a8XgiNvlsjc91SJdIZCFk4L8t2Oh hAGT7CO21kZTeH4XJQFlTqKQg6YIbYNT2MB2RGL/yGaFU6Y21y9pFqIk9MWyzHfzaqt2yCtuIcvWt 0T2tTN3f3Vsl6dkpNFfHc9q7ufqvXAn52ZDzG1BJautLyVV7GSqCy4GjPv0E5opMnz6Iw74S94gPy q6fjmaSdqw+u11GcBtBw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mVCdF-007FNn-94; Tue, 28 Sep 2021 12:54:49 +0000 Received: from relay7-d.mail.gandi.net ([217.70.183.200]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mVCdB-007FLh-LO for linux-mtd@lists.infradead.org; Tue, 28 Sep 2021 12:54:47 +0000 Received: (Authenticated sender: miquel.raynal@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id 0356F20002; Tue, 28 Sep 2021 12:54:41 +0000 (UTC) Date: Tue, 28 Sep 2021 14:54:40 +0200 From: Miquel Raynal To: mdalam@codeaurora.org Cc: mani@kernel.org, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, sricharan@codeaurora.org Subject: Re: [PATCH 3/3] mtd: rawnand: qcom: Add support for page scope read Message-ID: <20210928145440.758ead6b@xps13> In-Reply-To: <8765976685ca3a04af1c102a69c9ca63@codeaurora.org> References: <1631699851-12172-1-git-send-email-mdalam@codeaurora.org> <1631699851-12172-4-git-send-email-mdalam@codeaurora.org> <8765976685ca3a04af1c102a69c9ca63@codeaurora.org> Organization: Bootlin X-Mailer: Claws Mail 3.17.7 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210928_055445_878425_6864B388 X-CRM114-Status: GOOD ( 16.21 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org SGVsbG8sCgptZGFsYW1AY29kZWF1cm9yYS5vcmcgd3JvdGUgb24gVHVlLCAyOCBTZXAgMjAyMSAx Nzo1MTowMCArMDUzMDoKCj4gT24gMjAyMS0wOS0xNSAxNToyNywgTWQgU2FkcmUgQWxhbSB3cm90 ZToKPiA+IFFQSUMgVjIuMCBvbndhcmRzIFFQSUMgY29udHJvbGxlciBzdXBwb3J0IGVuaGFuY2Vk IHJlYWQgbW9kZQo+ID4gbGlrZSBwYWdlIHNjb3BlIHJlYWQgYW5kIG11bHRpIHBhZ2UgcmVhZC4K PiA+IAo+ID4gSW4gUVBJQyBWMSwgU1cgaXMgbmVlZGVkIHRvIHdyaXRlIEVYRUNfQ01EIHJlZ2lz dGVyIGZvciBlYWNoCgogICAgICAgICAgICAgICAgdGhlIGRyaXZlciBuZWVkcyB0byAoc2FtZSBi ZWxvdykKCj4gPiBDb2RlIHdvcmQgYW5kIGNvbGxlY3QgYW55IFN0YXR1cyByZWxhdGVkIHRvIHRo YXQgQ1cgYmVmb3JlCj4gPiBpc3N1ZWluZyBFWEVDX0NNRCBmb3IgbmV4dCBDVy4KPiA+IAo+ID4g UGFnZSBzY29wZSBjb21tYW5kIGlzIHRydWx5IGEgcGFnZSBtb2RlIGNvbW1hbmQgd2hlcmUgU1cg aXMKPiA+IHJlcXVpcmVkIHRvIGlzc3VlIEVYRUNfQ01EIG9ubHkgb25jZSBmb3IgYSBwYWdlLiBD b250cm9sbGVyCj4gPiBIVyB0YWtlcyBjYXJlIG9mIENvZGV3b3JkIHNwZWNpZmljIGRldGFpbHMg YW5kIGF1dG9tYXRpY2FsbHkKPiA+IHJldHVybnMgc3RhdHVzIGFzc29jaWF0ZWQgd2l0aCBlYWNo IENXIHRvIEJBTSBwaXBlLCBkZWRpY2F0ZWQKPiA+IGZvciBzdGF0dXMgZGVwb3NpdGlvbi4KPiA+ IAo+ID4gV2l0aCB0aGlzIGNvbW1hbmQsIFNXIG5vdyBjYW4gaXNzdWUgb25lIHJlYWQgY29tbWFu ZCBmb3IgYSBwYWdlCj4gPiBhbmQgdXBvbiByZWNlaXZpbmcgY29tcGxldGlvbiBpbnRlcnJ1cHQs IGNhbiBwcm9jZXNzIHN0YXR1cywKPiA+IHRoYXQgaGF2ZSBhbHJlYWR5IGJlZW4gZGVwb3NpdGVk IGluIG1lbW9yeSB0aHJvdWdoIHN0YXR1cyBCQU0gcGlwZS4KPiA+IAo+ID4gU2lnbmVkLW9mZi1i eTogTWQgU2FkcmUgQWxhbSA8bWRhbGFtQGNvZGVhdXJvcmEub3JnPgo+ID4gLS0tCj4gPiAgZHJp dmVycy9tdGQvbmFuZC9yYXcvcWNvbV9uYW5kYy5jIHwgNzcgPiArKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKysrKystLS0KPiA+ICAxIGZpbGUgY2hhbmdlZCwgNzEgaW5zZXJ0aW9ucygr KSwgNiBkZWxldGlvbnMoLSkKPiA+IAoKVGhhbmtzLApNaXF1w6hsCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTGludXggTVREIGRpc2N1c3Np b24gbWFpbGluZyBsaXN0Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGlu Zm8vbGludXgtbXRkLwo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C63D7C433EF for ; Tue, 28 Sep 2021 12:54:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A09B1610E5 for ; Tue, 28 Sep 2021 12:54:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240804AbhI1M4X convert rfc822-to-8bit (ORCPT ); Tue, 28 Sep 2021 08:56:23 -0400 Received: from relay7-d.mail.gandi.net ([217.70.183.200]:54645 "EHLO relay7-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240731AbhI1M4W (ORCPT ); Tue, 28 Sep 2021 08:56:22 -0400 Received: (Authenticated sender: miquel.raynal@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id 0356F20002; Tue, 28 Sep 2021 12:54:41 +0000 (UTC) Date: Tue, 28 Sep 2021 14:54:40 +0200 From: Miquel Raynal To: mdalam@codeaurora.org Cc: mani@kernel.org, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, sricharan@codeaurora.org Subject: Re: [PATCH 3/3] mtd: rawnand: qcom: Add support for page scope read Message-ID: <20210928145440.758ead6b@xps13> In-Reply-To: <8765976685ca3a04af1c102a69c9ca63@codeaurora.org> References: <1631699851-12172-1-git-send-email-mdalam@codeaurora.org> <1631699851-12172-4-git-send-email-mdalam@codeaurora.org> <8765976685ca3a04af1c102a69c9ca63@codeaurora.org> Organization: Bootlin X-Mailer: Claws Mail 3.17.7 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, mdalam@codeaurora.org wrote on Tue, 28 Sep 2021 17:51:00 +0530: > On 2021-09-15 15:27, Md Sadre Alam wrote: > > QPIC V2.0 onwards QPIC controller support enhanced read mode > > like page scope read and multi page read. > > > > In QPIC V1, SW is needed to write EXEC_CMD register for each the driver needs to (same below) > > Code word and collect any Status related to that CW before > > issueing EXEC_CMD for next CW. > > > > Page scope command is truly a page mode command where SW is > > required to issue EXEC_CMD only once for a page. Controller > > HW takes care of Codeword specific details and automatically > > returns status associated with each CW to BAM pipe, dedicated > > for status deposition. > > > > With this command, SW now can issue one read command for a page > > and upon receiving completion interrupt, can process status, > > that have already been deposited in memory through status BAM pipe. > > > > Signed-off-by: Md Sadre Alam > > --- > > drivers/mtd/nand/raw/qcom_nandc.c | 77 > ++++++++++++++++++++++++++++++++++++--- > > 1 file changed, 71 insertions(+), 6 deletions(-) > > Thanks, Miquèl