From patchwork Fri Jan 13 10:23:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 642241 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 97D90C54EBD for ; Fri, 13 Jan 2023 10:23:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240793AbjAMKXw (ORCPT ); Fri, 13 Jan 2023 05:23:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57910 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241096AbjAMKXd (ORCPT ); Fri, 13 Jan 2023 05:23:33 -0500 Received: from mail.marcansoft.com (marcansoft.com [212.63.210.85]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A55A560EB; Fri, 13 Jan 2023 02:23:31 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: sendonly@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id ECE8341A42; Fri, 13 Jan 2023 10:23:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=marcan.st; s=default; t=1673605409; bh=Qk0SZhUSDcUli3ukUepHX62c899A3JbfgCFO6jDV0xw=; h=From:To:Cc:Subject:Date; b=l/RI4vKRdxtkr1dgBIidcWG5huYub+Hd8IQ4/8AQ9V+BjXniGnGiU7aIFRlbq/vxE dK8mHJeu6jhqseny7hhgTLMcPfw+YXb154e8BipO9gRGyOO2RcT8qZtqsPak13kkLh IGgXh82uSQGygDRIJQn6rNEdRI8f1YGPhIix1NOMGljo9TSMplT3v3/x1zyAw4UZh4 9jJxba6lyvTo2g+bEa5jpYzUAFq7WnLQdwVdRVaQN/hAqns+goLBeSRMCn6sHaEDlP QhugQLLKCicRknkAnVE25f2+/4BS/2Zn8wyKIJOzBFBk5G6F5alMKkPUA6iw8L8dyn gEGvHEbkbAXWA== From: Hector Martin To: Mark Brown Cc: Rob Herring , Krzysztof Kozlowski , Tudor Ambarus , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, Janne Grunau , Alyssa Rosenzweig , asahi@lists.linux.dev, linux-kernel@vger.kernel.org, Hector Martin Subject: [PATCH v2 0/3] SPI core CS delay fixes and additions Date: Fri, 13 Jan 2023 19:23:07 +0900 Message-Id: <20230113102309.18308-1-marcan@marcan.st> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Commits f6c911f3308c ("spi: dt-bindings: Introduce spi-cs-setup-ns property") and 33a2fde5f77b ("spi: Introduce spi-cs-setup-ns property") introduced a new property to represent the CS setup delay in the device tree, but they have some issues: - The property is only parsed as a 16-bit integer number of nanoseconds, which limits the maximum value to ~65us. This is not a reasonable upper limit, as some devices might need a lot more. - The property name is inconsistent with other delay properties, which use a "*-delay-ns" naming scheme. - Only the setup delay is introduced, but not the related hold and inactive delay times. This series fixes the issues and adds support for the two missing properties. Please pull in the first 3 patches as fixes for 6.2, to avoid introducing a problematic DT API in this release. The last two patches can wait until 6.3, though are probably harmless to throw in as fixes too, since they're trivial. v2: Removed a stray variable declaration that was triggering a warning, and dropped the first two patches which have already been applied. Janne Grunau (3): spi: Use a 32-bit DT property for spi-cs-setup-delay-ns spi: dt-bindings: Add hold/inactive CS delay peripheral properties spi: Parse hold/inactive CS delay values from the DT .../bindings/spi/spi-peripheral-props.yaml | 10 ++++++++ drivers/spi/spi.c | 25 +++++++++++++++---- 2 files changed, 30 insertions(+), 5 deletions(-) --- 2.35.1