From patchwork Fri May 31 09:18:43 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 2641161 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by patchwork1.kernel.org (Postfix) with ESMTP id A27063FD2B for ; Fri, 31 May 2013 09:23:45 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UiLX0-0004Y5-8f; Fri, 31 May 2013 09:21:55 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UiLWL-0003pl-84; Fri, 31 May 2013 09:21:13 +0000 Received: from eu1sys200aog119.obsmtp.com ([207.126.144.147]) by merlin.infradead.org with smtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UiLVU-0003ey-OP for linux-arm-kernel@lists.infradead.org; Fri, 31 May 2013 09:20:24 +0000 Received: from beta.dmz-eu.st.com ([164.129.1.35]) (using TLSv1) by eu1sys200aob119.postini.com ([207.126.147.11]) with SMTP ID DSNKUahrPbqgKheO/5EmnWIi+alBAzhDSDUK@postini.com; Fri, 31 May 2013 09:20:20 UTC Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id B9A9326F; Fri, 31 May 2013 09:19:56 +0000 (GMT) Received: from relay2.stm.gmessaging.net (unknown [10.230.100.18]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 432E14A27; Fri, 31 May 2013 09:19:39 +0000 (GMT) Received: from exdcvycastm003.EQ1STM.local (alteon-source-exch [10.230.100.61]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (Client CN "exdcvycastm003", Issuer "exdcvycastm003" (not verified)) by relay2.stm.gmessaging.net (Postfix) with ESMTPS id 21228A8065; Fri, 31 May 2013 11:19:52 +0200 (CEST) Received: from steludxu4075.lud.stericsson.com (10.230.100.153) by smtp.stericsson.com (10.230.100.1) with Microsoft SMTP Server (TLS) id 8.3.279.5; Fri, 31 May 2013 11:19:56 +0200 From: Linus Walleij To: Subject: [PATCH 08/39] watchdog: coh901327: devicetree support Date: Fri, 31 May 2013 11:18:43 +0200 Message-ID: <1369991954-17406-9-git-send-email-linus.walleij@stericsson.com> X-Mailer: git-send-email 1.7.11.3 In-Reply-To: <1369991954-17406-1-git-send-email-linus.walleij@stericsson.com> References: <1369991954-17406-1-git-send-email-linus.walleij@stericsson.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130531_052021_100922_1523332D X-CRM114-Status: GOOD ( 18.49 ) X-Spam-Score: -4.2 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [207.126.144.147 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Linus Walleij , Arnd Bergmann X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Linus Walleij This adds support for probing the COH 901 327 watchdog from the device tree and also adds associated bindings. Acked-by: Wim Van Sebroeck Reviewed-by: Guenter Roeck Signed-off-by: Linus Walleij --- .../bindings/watchdog/stericsson-coh901327.txt | 19 +++++++++++++++++++ drivers/watchdog/coh901327_wdt.c | 12 +++++++++--- 2 files changed, 28 insertions(+), 3 deletions(-) create mode 100644 Documentation/devicetree/bindings/watchdog/stericsson-coh901327.txt diff --git a/Documentation/devicetree/bindings/watchdog/stericsson-coh901327.txt b/Documentation/devicetree/bindings/watchdog/stericsson-coh901327.txt new file mode 100644 index 0000000..8ffb88e --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/stericsson-coh901327.txt @@ -0,0 +1,19 @@ +ST-Ericsson COH 901 327 Watchdog timer + +Required properties: +- compatible: must be "stericsson,coh901327". +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: the interrupt used for the watchdog timeout warning. + +Optional properties: +- timeout-sec: contains the watchdog timeout in seconds. + +Example: + +watchdog: watchdog@c0012000 { + compatible = "stericsson,coh901327"; + reg = <0xc0012000 0x1000>; + interrupts = <3>; + timeout-sec = <60>; +}; diff --git a/drivers/watchdog/coh901327_wdt.c b/drivers/watchdog/coh901327_wdt.c index b9b8a8b..4bd070f 100644 --- a/drivers/watchdog/coh901327_wdt.c +++ b/drivers/watchdog/coh901327_wdt.c @@ -354,9 +354,9 @@ static int __init coh901327_probe(struct platform_device *pdev) clk_disable(clk); - if (margin < 1 || margin > 327) - margin = 60; - coh901327_wdt.timeout = margin; + ret = watchdog_init_timeout(&coh901327_wdt, margin, &pdev->dev); + if (ret < 0) + coh901327_wdt.timeout = 60; ret = watchdog_register_device(&coh901327_wdt); if (ret == 0) @@ -441,10 +441,16 @@ void coh901327_watchdog_reset(void) /* Return and await doom */ } +static const struct of_device_id coh901327_dt_match[] = { + { .compatible = "stericsson,coh901327" }, + {}, +}; + static struct platform_driver coh901327_driver = { .driver = { .owner = THIS_MODULE, .name = "coh901327_wdog", + .of_match_table = coh901327_dt_match, }, .remove = __exit_p(coh901327_remove), .suspend = coh901327_suspend,