From patchwork Mon Oct 31 10:38:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Billy Tsai X-Patchwork-Id: 13025565 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id C2CACFA3740 for ; Mon, 31 Oct 2022 10:38:56 +0000 (UTC) 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:Message-ID:Date:Subject:To :From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Z8Ne7kWMPvbEUK3gvEgwvAA9/RDVQDmiq0+0gINrlsc=; b=1PvoykFEfo+WXr brGaILnJ1Q7ou8j05TfDQou8JDPJphGb5eZG/ab07gPK1TXoQcGK8dSfC1+heQv6zbHdzAlIEwh+h DPLmuhuOwDMP7OoWEoOz3W871EBUoUIGKMLFN0Lp/V3gEXMarmpDy4uzR1SkZ3bn89vUQk813Qjzt Fz5sfA0PZZb+kr7tEkB+NK8MlhjU7SpkoNZVj/KVEq8G0zBa+wgeSiqGsacoBf8+P/eVNl4qFPVyJ 7UxAClGB7kesWL22WR9KxkwGcG/jNGEzAKIYNkXcj6pu/xNWtZPLIFo0TjZrsm/FiUA9sao/KuRay 6KQBoZtggkYivcyFvltA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1opSB7-00AfDa-Q0; Mon, 31 Oct 2022 10:38:01 +0000 Received: from [211.20.114.71] (helo=twspam01.aspeedtech.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1opSAT-00Af2O-Gf for linux-arm-kernel@lists.infradead.org; Mon, 31 Oct 2022 10:37:24 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 29VADXEh074630; Mon, 31 Oct 2022 18:13:33 +0800 (GMT-8) (envelope-from billy_tsai@aspeedtech.com) Received: from BillyTsai-pc.aspeed.com (192.168.2.149) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 31 Oct 2022 18:36:38 +0800 From: Billy Tsai To: , , , , , , , , , , , , , , , , , Subject: [PATCH 0/3] Support pwm/tach driver for aspeed ast26xx Date: Mon, 31 Oct 2022 18:38:05 +0800 Message-ID: <20221031103809.20225-1-billy_tsai@aspeedtech.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [192.168.2.149] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 29VADXEh074630 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221031_033721_870308_3FD6D75C X-CRM114-Status: GOOD ( 11.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Unlike the old design that the register setting of the TACH should based on the configure of the PWM. In ast26xx, the dependency between pwm and tach controller is eliminated and becomes a separate hardware block. One is used to provide pwm output and another is used to monitor the frequency of the input. Therefore, this patch serials implements them by writing the two driver "pwm-aspeed-ast2600.c" and "tach-aspeed-ast2600.c". The former is following the pwm subsystem which can apply the existed driver to controller the fan(pwm-fan.c), beeper(pwm-beeper.c) and so on. The latter is following the sysfs interface of hwmon to creat the node for fan monitor. Billy Tsai (3): dt-bindings: Add bindings for aspeed pwm-tach. pwm: Add Aspeed ast2600 PWM support hwmon: Add Aspeed ast2600 TACH support .../bindings/hwmon/aspeed,ast2600-tach.yaml | 48 ++ .../bindings/mfd/aspeed,ast2600-pwm-tach.yaml | 76 ++ .../bindings/pwm/aspeed,ast2600-pwm.yaml | 64 ++ drivers/hwmon/Kconfig | 9 + drivers/hwmon/Makefile | 1 + drivers/hwmon/tach-aspeed-ast2600.c | 692 ++++++++++++++++++ drivers/pwm/Kconfig | 10 + drivers/pwm/Makefile | 1 + drivers/pwm/pwm-aspeed-ast2600.c | 325 ++++++++ 9 files changed, 1226 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml create mode 100644 Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml create mode 100644 drivers/hwmon/tach-aspeed-ast2600.c create mode 100644 drivers/pwm/pwm-aspeed-ast2600.c