diff mbox series

[5.10,05/20] dt-bindings: rtc: add reset-source property

Message ID	20210107143053.178973820@linuxfoundation.org
State	New
Headers	show Return-Path: <stable-owner@kernel.org> From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org, Alexandre Belloni <alexandre.belloni@bootlin.com>, Rasmus Villemoes <rasmus.villemoes@prevas.dk>, Rob Herring <robh@kernel.org> Subject: [PATCH 5.10 05/20] dt-bindings: rtc: add reset-source property Date: Thu, 7 Jan 2021 15:34:00 +0100 Message-Id: <20210107143053.178973820@linuxfoundation.org> In-Reply-To: <20210107143052.392839477@linuxfoundation.org> References: <20210107143052.392839477@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	None \| expand [5.10,02/20] Revert "mtd: spinand: Fix OOB read" [5.10,03/20] rtc: pcf2127: move watchdog initialisation to a separate function [5.10,04/20] rtc: pcf2127: only use watchdog when explicitly available [5.10,05/20] dt-bindings: rtc: add reset-source property [5.10,06/20] kdev_t: always inline major/minor helper functions [5.10,07/20] Bluetooth: Fix attempting to set RPA timeout when unsupported [5.10,08/20] ALSA: hda/realtek - Modify Dell platform name [5.10,09/20] ALSA: hda/hdmi: Fix incorrect mutex unlock in silent_stream_disable() [5.10,10/20] drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock [5.10,11/20] scsi: ufs: Allow an error return value from ->device_reset() [5.10,12/20] scsi: ufs: Re-enable WriteBooster after device reset [5.10,13/20] RDMA/core: remove use of dma_virt_ops [5.10,14/20] RDMA/siw,rxe: Make emulated devices virtual in the device tree [5.10,15/20] fuse: fix bad inode [5.10,16/20] perf: Break deadlock involving exec_update_mutex [5.10,17/20] rwsem: Implement down_read_killable_nested [5.10,18/20] rwsem: Implement down_read_interruptible [5.10,19/20] exec: Transform exec_update_mutex into a rw_semaphore [5.10,20/20] mwifiex: Fix possible buffer overflows in mwifiex_cmd_802_11_ad_hoc_start

Commit Message

Greg KH Jan. 7, 2021, 2:34 p.m. UTC

From: Rasmus Villemoes <rasmus.villemoes@prevas.dk>

commit 320d159e2d63a97a40f24cd6dfda5a57eec65b91 upstream.

Some RTCs, e.g. the pcf2127, can be used as a hardware watchdog. But
if the reset pin is not actually wired up, the driver exposes a
watchdog device that doesn't actually work.

Provide a standard binding that can be used to indicate that a given
RTC can perform a reset of the machine, similar to wakeup-source.

Suggested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201218101054.25416-2-rasmus.villemoes@prevas.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 Documentation/devicetree/bindings/rtc/rtc.yaml |    5 +++++
 1 file changed, 5 insertions(+)

diff mbox series

Patch

--- a/Documentation/devicetree/bindings/rtc/rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/rtc.yaml
@@ -63,6 +63,11 @@  properties:
     description:
       Enables wake up of host system on alarm.
 
+  reset-source:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      The RTC is able to reset the machine.
+
 additionalProperties: true
 
 ...