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[209.132.180.67]) by mx.google.com with ESMTP id oo3si4725033pbb.140.2015.03.24.02.26.24; Tue, 24 Mar 2015 02:26:25 -0700 (PDT) Received-SPF: none (google.com: linux-kernel-owner@vger.kernel.org does not designate permitted sender hosts) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752485AbbCXJ0G (ORCPT + 27 others); Tue, 24 Mar 2015 05:26:06 -0400 Received: from mail-wi0-f177.google.com ([209.85.212.177]:36880 "EHLO mail-wi0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752283AbbCXJZ6 (ORCPT ); Tue, 24 Mar 2015 05:25:58 -0400 Received: by wixw10 with SMTP id w10so89466459wix.0 for ; Tue, 24 Mar 2015 02:25:56 -0700 (PDT) X-Received: by 10.180.75.243 with SMTP id f19mr26519627wiw.94.1427189156674; Tue, 24 Mar 2015 02:25:56 -0700 (PDT) Received: from localhost.localdomain ([81.134.86.34]) by mx.google.com with ESMTPSA id pm6sm2549370wic.20.2015.03.24.02.25.55 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 24 Mar 2015 02:25:55 -0700 (PDT) From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, rtc-linux@googlegroups.com, wim@iguana.be, linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux@roeck-us.net, david.paris@st.com, a.zummo@towertech.it Cc: lee.jones@linaro.org, kernel@stlinux.com Subject: [PATCH v6 5/9] watchdog: bindings: Provide ST bindings for ST's LPC Watchdog device Date: Tue, 24 Mar 2015 09:25:36 +0000 Message-Id: <1427189140-1935-6-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1427189140-1935-1-git-send-email-lee.jones@linaro.org> References: <1427189140-1935-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: lee.jones@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.215.48 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , On current ST platforms the LPC controls a number of functions including Watchdog and Real Time Clock. This patch provides the bindings used to configure LPC in Watchdog mode. Signed-off-by: Lee Jones --- .../devicetree/bindings/watchdog/st_lpc_wdt.txt | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt diff --git a/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt b/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt new file mode 100644 index 0000000..1bdf023 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt @@ -0,0 +1,38 @@ +STMicroelectronics Low Power Controller (LPC) - Watchdog +======================================================== + +LPC currently supports Watchdog OR Real Time Clock functionality. + +[See: ../rtc/rtc-st-lpc.txt for RTC options] + +Required properties + +- compatible : Must be one of: "st,stih407-lpc" "st,stih416-lpc" + "st,stih415-lpc" "st,stid127-lpc" +- reg : LPC registers base address + size +- interrupts : LPC interrupt line number and associated flags +- clocks : Clock used by LPC device (See: ../clock/clock-bindings.txt) +- st,lpc-mode : The LPC can run either one of two modes ST_LPC_MODE_RTC [0] or + ST_LPC_MODE_WDT [1]. One (and only one) mode must be + selected. + +Required properties [watchdog mode] + +- st,syscfg : Phandle to syscfg node used to enable watchdog and configure + CPU reset type. +- timeout-sec : Watchdog timeout in seconds + +Optional properties [watchdog mode] + +- st,warm-reset : If present reset type will be 'warm' - if not it will be cold + +Example: + lpc@fde05000 { + compatible = "st,stih416-lpc-watchdog"; + reg = <0xfde05000 0x1000>; + clocks = <&clk_s_d3_flexgen CLK_LPC_0>; + st,syscfg = <&syscfg_core>; + timeout-sec = <120>; + st,lpc-mode = ; + st,warm-reset; + };