From patchwork Mon Jan 17 16:17:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dario Binacchi X-Patchwork-Id: 533020 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 2BEF1C433F5 for ; Mon, 17 Jan 2022 16:18:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241001AbiAQQSN (ORCPT ); Mon, 17 Jan 2022 11:18:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35332 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235158AbiAQQSM (ORCPT ); Mon, 17 Jan 2022 11:18:12 -0500 Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [IPv6:2a00:1450:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6BDCC061574 for ; Mon, 17 Jan 2022 08:18:11 -0800 (PST) Received: by mail-ed1-x535.google.com with SMTP id z22so67787707edd.12 for ; Mon, 17 Jan 2022 08:18:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4y5Hl3U1xXQXZw23h6/DO7pv/6iLmoZwNHNPhFYyIt8=; b=H7Kyile8bVbUB1uHXBaUIRyKZ8c7SBGxw1S9Bq1l7v1qCdkBs3OkvwHPBHe1d9tFni P7ZpCPGCpTFPJ3FugYLnQ0uNeH/2X9/xwte20CTIYlILxxuw1ZGakLiHVMgBvDaW/MDa hLACj+lIfyO/bcvaSxpTA2shvjDfo1byUl4m8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4y5Hl3U1xXQXZw23h6/DO7pv/6iLmoZwNHNPhFYyIt8=; b=5NZkCG9KGgVsFhsUrDrthBe3nN6Kb36bPKu7tqjzoPEo/SVuMTb+M2p217+jLoKdNf Wuuk2VzGChiKrq3PUNBGQ2n4QayTTNgX3bNTcbjCjOmZaSl/Lkp/h2C2ytb0fU/F9Vqq g4Ncjbbg66y9VzxPa75TczkRXmDwXT9/5xx8YHFKZuB0VCKM8CGOTIvH5mhpNW2fPbu9 jrqZ7umeTWHLFSrjDBFq91I7DUPI1ZcMmovyQKaO7AttbFa/C2YhLXMUlOeOteX/n2bB Rn8fiT2I8mH38VI+cnioIHp2o6DurOkotxVIc2epfYPPLO6eJ3OtnQw3N/M99DiMNtX5 K92Q== X-Gm-Message-State: AOAM530Jdj/tvARSmFwBW4VMKFa60LygKa1Uwg0wlZYZO9YiOCuHnBmG 7TNbqBTw0W5aPge0m2f+80bSWw== X-Google-Smtp-Source: ABdhPJzoKLf0i17Ak3VzqNyVv9Vm8qt47iUJmDiS73Di84vuVY4d6AuUwx7pgXcp35lk5Ixyzj/Ljw== X-Received: by 2002:a17:906:1145:: with SMTP id i5mr16996384eja.317.1642436290556; Mon, 17 Jan 2022 08:18:10 -0800 (PST) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-82-52-8-210.retail.telecomitalia.it. [82.52.8.210]) by smtp.gmail.com with ESMTPSA id s4sm4147652ejm.146.2022.01.17.08.18.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Jan 2022 08:18:10 -0800 (PST) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Michael Trimarchi , Dario Binacchi , Boris Brezillon , Fabio Estevam , Han Xu , Miquel Raynal , NXP Linux Team , Pengutronix Kernel Team , Richard Weinberger , Rob Herring , Sascha Hauer , Shawn Guo , Stephen Boyd , Vignesh Raghavendra , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mtd@lists.infradead.org Subject: [RFC PATCH v3 0/4] Fix and improve gpmi nand on mx28 Date: Mon, 17 Jan 2022 17:17:51 +0100 Message-Id: <20220117161755.1863579-1-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Starting from [1], the series fixes the timings setting of the gpmi controller for the mx28 architecture, also adding support for fast edo mode timings. The whole series has been heavily tested with the mtd kernel test modules, and with repeated write cycles on nand. [1] https://lore.kernel.org/r/20210702065350.209646-5-ebiggers@kernel.org Changes in v3: - Remove the "mtd: rawnand: gpmi: use a table to get EDO mode setup" patch. - Simplify the validation logic (suggested by Sascha Hauer ). Changes in v2: - Reparent by device tree instead of code (drivers/clk/mxs/clk-imx28.c). Suggested by Stephen Boyd. - Improve the commit description. - give examples of frequencies on my setup. - Fix commit description. - Add an example to the commit description to better understand the problem solved by the patch. - Split the patch. - Improve the commit message. - Move the patch to the end of the series. Dario Binacchi (4): ARM: dts: imx28: reparent gpmi clock to ref_gpmi mtd: rawnand: gpmi: fix controller timings setting mtd: rawnand: gpmi: validate controller clock rate mtd: rawnand: gpmi: support fast edo timings for mx28 arch/arm/boot/dts/imx28.dtsi | 2 ++ drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 27 ++++++++++++++++++---- 2 files changed, 24 insertions(+), 5 deletions(-)