From: Christopher Bostic <cbostic@linux.vnet.ibm.com> To: wim@iguana.be, linux@roeck-us.net, robh+dt@kernel.org, mark.rutland@arm.com, joel@jms.id.au, linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org Cc: Christopher Bostic <cbostic@linux.vnet.ibm.com>, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] drivers/watchdog: Add optional ASPEED device tree properties Date: Tue, 27 Jun 2017 16:17:33 -0500 [thread overview] Message-ID: <20170627211734.60477-2-cbostic@linux.vnet.ibm.com> (raw) In-Reply-To: <20170627211734.60477-1-cbostic@linux.vnet.ibm.com> Describe device tree optional properties: * aspeed,arm-reet - ARM CPU reset on signal * aspeed,soc-reset - SOC reset on signal * aspeed,sys-reset - System reset on signal Disabling system reset may be required in situations where one of the other watchdog engines in the system is responsible for this. * aspeed,interrupt - Interrupt CPU on signal * aspeed,external-signal - Generate external signal (WDT1 and WDT2 only) * aspeed,alt-boot - Boot from alternate block on signal Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com> --- v2 - Add 'aspeed,' prefix to all optional properties - Add arm-reset, soc-reset, interrupt, alt-boot properties --- .../devicetree/bindings/watchdog/aspeed-wdt.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt index c5e74d7..555b8b4 100644 --- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt @@ -8,9 +8,34 @@ Required properties: - reg: physical base address of the controller and length of memory mapped region +Optional properties: + Signal behavior - Whenever a timeout occurs, the watchdog can be programmed + to generate 6 types of signals: + + - aspeed,arm-reset: If property is present then reset ARM CPU only. + + - aspeed,soc-reset: If property is present then reset SOC. + + - aspeed,sys-reset: If property is present then reset the entire chip. + In cases where one of the other watchdog engines + in the system is responsible for system reset it + may be required to not specify this property. + + - aspeed,interrupt: If property is present then interrupt CPU. + + - aspeed,external-signal: If property is present then signal is sent to + external reset counter (only WDT1 and WDT2). + - aspeed,alt-boot: If property is present then boot from alternate block. + Example: wdt1: watchdog@1e785000 { compatible = "aspeed,ast2400-wdt"; reg = <0x1e785000 0x1c>; + aspeed,arm-reset; + aspeed,soc-reset; + aspeed,sys-reset; + aspeed,interrupt; + aspeed,external-signal; + aspeed,alt-boot; }; -- 1.8.2.2
WARNING: multiple messages have this Message-ID (diff)
From: Christopher Bostic <cbostic-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> To: wim-IQzOog9fTRqzQB+pC5nmwQ@public.gmane.org, linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org, linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Christopher Bostic <cbostic-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Subject: [PATCH v2 1/2] drivers/watchdog: Add optional ASPEED device tree properties Date: Tue, 27 Jun 2017 16:17:33 -0500 [thread overview] Message-ID: <20170627211734.60477-2-cbostic@linux.vnet.ibm.com> (raw) In-Reply-To: <20170627211734.60477-1-cbostic-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> Describe device tree optional properties: * aspeed,arm-reet - ARM CPU reset on signal * aspeed,soc-reset - SOC reset on signal * aspeed,sys-reset - System reset on signal Disabling system reset may be required in situations where one of the other watchdog engines in the system is responsible for this. * aspeed,interrupt - Interrupt CPU on signal * aspeed,external-signal - Generate external signal (WDT1 and WDT2 only) * aspeed,alt-boot - Boot from alternate block on signal Signed-off-by: Christopher Bostic <cbostic-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> --- v2 - Add 'aspeed,' prefix to all optional properties - Add arm-reset, soc-reset, interrupt, alt-boot properties --- .../devicetree/bindings/watchdog/aspeed-wdt.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt index c5e74d7..555b8b4 100644 --- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt @@ -8,9 +8,34 @@ Required properties: - reg: physical base address of the controller and length of memory mapped region +Optional properties: + Signal behavior - Whenever a timeout occurs, the watchdog can be programmed + to generate 6 types of signals: + + - aspeed,arm-reset: If property is present then reset ARM CPU only. + + - aspeed,soc-reset: If property is present then reset SOC. + + - aspeed,sys-reset: If property is present then reset the entire chip. + In cases where one of the other watchdog engines + in the system is responsible for system reset it + may be required to not specify this property. + + - aspeed,interrupt: If property is present then interrupt CPU. + + - aspeed,external-signal: If property is present then signal is sent to + external reset counter (only WDT1 and WDT2). + - aspeed,alt-boot: If property is present then boot from alternate block. + Example: wdt1: watchdog@1e785000 { compatible = "aspeed,ast2400-wdt"; reg = <0x1e785000 0x1c>; + aspeed,arm-reset; + aspeed,soc-reset; + aspeed,sys-reset; + aspeed,interrupt; + aspeed,external-signal; + aspeed,alt-boot; }; -- 1.8.2.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-06-27 21:18 UTC|newest] Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-06-27 21:17 [PATCH v2 0/2] Add ASPEED watchdog device tree properties Christopher Bostic 2017-06-27 21:17 ` Christopher Bostic 2017-06-27 21:17 ` Christopher Bostic [this message] 2017-06-27 21:17 ` [PATCH v2 1/2] drivers/watchdog: Add optional ASPEED " Christopher Bostic 2017-06-27 21:32 ` Guenter Roeck 2017-06-27 21:32 ` Guenter Roeck 2017-06-27 21:42 ` Christopher Bostic 2017-06-27 21:42 ` Christopher Bostic 2017-06-27 22:07 ` Guenter Roeck 2017-06-27 22:07 ` Guenter Roeck 2017-06-28 14:55 ` Christopher Bostic 2017-06-28 14:55 ` Christopher Bostic 2017-06-28 15:06 ` Guenter Roeck 2017-06-28 15:06 ` Guenter Roeck 2017-06-27 21:17 ` [PATCH v2 2/2] drivers/watchdog: ASPEED reference dev tree properties for config Christopher Bostic 2017-06-27 21:17 ` Christopher Bostic 2017-06-28 11:31 ` Guenter Roeck 2017-06-28 11:31 ` Guenter Roeck 2017-06-28 14:29 ` Christopher Bostic 2017-06-28 14:29 ` Christopher Bostic 2017-06-28 14:54 ` Guenter Roeck 2017-06-28 14:54 ` Guenter Roeck 2017-06-28 14:59 ` Christopher Bostic 2017-06-28 14:59 ` Christopher Bostic 2017-06-28 15:08 ` Guenter Roeck 2017-06-28 15:55 ` Christopher Bostic 2017-06-28 15:55 ` Christopher Bostic 2017-06-28 16:06 ` Guenter Roeck 2017-06-28 16:06 ` Guenter Roeck 2017-06-28 16:09 ` Christopher Bostic 2017-06-28 16:09 ` Christopher Bostic 2017-06-28 17:52 ` Guenter Roeck 2017-06-28 17:52 ` Guenter Roeck
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20170627211734.60477-2-cbostic@linux.vnet.ibm.com \ --to=cbostic@linux.vnet.ibm.com \ --cc=devicetree@vger.kernel.org \ --cc=joel@jms.id.au \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-watchdog@vger.kernel.org \ --cc=linux@roeck-us.net \ --cc=mark.rutland@arm.com \ --cc=robh+dt@kernel.org \ --cc=wim@iguana.be \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.