From patchwork Wed Jan 4 09:36:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 13088367 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 89BEFC5479D for ; Wed, 4 Jan 2023 09:37:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233207AbjADJh0 (ORCPT ); Wed, 4 Jan 2023 04:37:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239136AbjADJhZ (ORCPT ); Wed, 4 Jan 2023 04:37:25 -0500 Received: from mail.marcansoft.com (marcansoft.com [212.63.210.85]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C049207; Wed, 4 Jan 2023 01:37:24 -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 8ADF141F72; Wed, 4 Jan 2023 09:37:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=marcan.st; s=default; t=1672825042; bh=wFL5o824s6njbpw90C6rdrkcieXj4RdD7IB7plCdhis=; h=From:To:Cc:Subject:Date; b=HA+GtbzMSd6PMgKNFRMmMWVo3XY7vGSaudzxbGV4nrCy72NFVLx1Z0frbOL9ibNg+ nTY3t4aohXhmkGerj3+0Imeqo34jbN50pLiIbqM8LQPoK6kjOhotemOVfZAIo2Psmf FlzCKd7V202jAoMYP39gZ/64GWBj8Gw96r1abcZLcIf27jbKbkbZeSZ3NGgoW97gEE m77bO2EcqQxFrF7AN2v+Bg09sNvaeL5BTtXY1SWThmpYz6iXzmRsQ6o/92vvEhJiqd d2S4zUK1m3NprTy/xoeWShe+FFuQiX2of/suF8aBsWIzT3BRfFgnzJb3qCo1n/tSI3 5pkX2P5SfN89Q== From: Hector Martin To: Mark Brown , Rob Herring , Krzysztof Kozlowski Cc: 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 0/5] SPI core CS delay fixes and additions Date: Wed, 4 Jan 2023 18:36:26 +0900 Message-Id: <20230104093631.15611-1-marcan@marcan.st> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@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. Hector Martin (2): spi: dt-bindings: Rename spi-cs-setup-ns to spi-cs-setup-delay-ns spi: Rename spi-cs-setup-ns property to spi-cs-setup-delay-ns 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 | 14 +++++++++-- drivers/spi/spi.c | 24 +++++++++++++++---- 2 files changed, 32 insertions(+), 6 deletions(-)