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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D037C7EE29 for ; Fri, 9 Jun 2023 15:25:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232080AbjFIPZI (ORCPT ); Fri, 9 Jun 2023 11:25:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55148 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241494AbjFIPZE (ORCPT ); Fri, 9 Jun 2023 11:25:04 -0400 Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::226]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 335723586; Fri, 9 Jun 2023 08:25:01 -0700 (PDT) X-GND-Sasl: miquel.raynal@bootlin.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1686324300; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Jl96cbyDBbKgT3dYhNuqd8N/AXyFx7lY4YyvhcXXQ5g=; b=nq1+kzZJSIgUAjoH4SmlnSxSv3rSvvjZO9Q+coXmgGqK7X9eYhgec0LbkaeyxkTn4d8arB 3Sgc/aHU0wvBrqO3JPD5k7hU4h6alrpnc4HL0gDxFtoBRUzXjKgg9t0PcVEqTwc7esdOrU xXcxju1cShwXH0fm/ufotbUyx6aWWrKESBEGNtAyT9nk6S7LzMVP1DOm3Swjt9eaj1F5Kb qcbvdV/Z7kxC838y/rL1tn24ihCRD4Jonmy//REE+l+PdQdllfl7vwe/B+HA2XzxPU96Pk 2XNa13cFwb16+IleNBfGjw49w5Rm34l5xSCt3LtLbmFS+ZVx0RHkOJ5xA6KM2w== X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com X-GND-Sasl: miquel.raynal@bootlin.com Received: by mail.gandi.net (Postfix) with ESMTPSA id 0F4C7C0002; Fri, 9 Jun 2023 15:24:57 +0000 (UTC) From: Miquel Raynal To: Arseniy Krasnov , Liang Yang , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Rob Herring , Krzysztof Kozlowski , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl Cc: oxffffaa@gmail.com, kernel@sberdevices.ru, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 2/2] mtd: rawnand: meson: waiting w/o wired ready/busy pin Date: Fri, 9 Jun 2023 17:24:57 +0200 Message-Id: <20230609152457.1186904-1-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230608044728.1328506-3-AVKrasnov@sberdevices.ru> References: MIME-Version: 1.0 X-linux-mtd-patch-notification: thanks X-linux-mtd-patch-commit: b'c17a90a46a712b78578dd7156380fdd515a2af9d' Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Thu, 2023-06-08 at 04:47:28 UTC, Arseniy Krasnov wrote: > If there is no wired ready/busy pin, classic way to wait for command > completion is to use function 'nand_soft_waitrdy()'. Meson NAND has > special command which allows to wait for NAND_STATUS_READY bit without > reading status in a software loop (as 'nand_soft_waitrdy()' does). To > use it send this command along with NAND_CMD_STATUS, then wait for an > interrupt, and after interrupt send NAND_CMD_READ0. So this feature > allows to use interrupt driven waiting without wired ready/busy pin. > > Suggested-by: Liang Yang > Signed-off-by: Arseniy Krasnov Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks. Miquel