From: Evan Benn <evanbenn@chromium.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: jwerner@chromium.org, xingyu.chen@amlogic.com,
Evan Benn <evanbenn@chromium.org>,
"David S. Miller" <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Guenter Roeck <linux@roeck-us.net>,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Wim Van Sebroeck <wim@linux-watchdog.org>,
devicetree@vger.kernel.org, linux-watchdog@vger.kernel.org
Subject: [PATCH v6 1/2] dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog
Date: Tue, 5 May 2020 13:13:30 +1000 [thread overview]
Message-ID: <20200505131242.v6.1.Id96574f1f52479d7a2f3b866b8a0552ab8c03d7f@changeid> (raw)
In-Reply-To: <20200505031331.122781-1-evanbenn@chromium.org>
This watchdog can be used on ARM systems with a Secure
Monitor firmware to forward watchdog operations to
firmware via a Secure Monitor Call.
Signed-off-by: Evan Benn <evanbenn@chromium.org>
---
Changes in v6:
- Don't use dt default
Changes in v5:
- Change compatible to arm,smc-wdt
Changes in v4:
- Add arm,smc-id property
Changes in v3:
- Change name back to arm
Changes in v2:
- Change name arm > mt8173
.../bindings/watchdog/arm-smc-wdt.yaml | 37 +++++++++++++++++++
MAINTAINERS | 6 +++
2 files changed, 43 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
diff --git a/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
new file mode 100644
index 0000000000000..bec651541e0c8
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/arm-smc-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Secure Monitor Call based watchdog
+
+allOf:
+ - $ref: "watchdog.yaml#"
+
+maintainers:
+ - Julius Werner <jwerner@chromium.org>
+
+properties:
+ compatible:
+ enum:
+ - arm,smc-wdt
+ arm,smc-id:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ The ATF smc function id used by the firmware.
+ Defaults to 0x82003D06 if unset.
+
+required:
+ - compatible
+
+examples:
+ - |
+ watchdog {
+ compatible = "arm,smc-wdt";
+ arm,smc-id = <0x82003D06>;
+ timeout-sec = <15>;
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index b816a453b10eb..0f2b39767bfa9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1457,6 +1457,12 @@ S: Maintained
F: Documentation/devicetree/bindings/interrupt-controller/arm,vic.txt
F: drivers/irqchip/irq-vic.c
+ARM SMC WATCHDOG DRIVER
+M: Julius Werner <jwerner@chromium.org>
+R: Evan Benn <evanbenn@chromium.org>
+S: Maintained
+F: devicetree/bindings/watchdog/arm-smc-wdt.yaml
+
ARM SMMU DRIVERS
M: Will Deacon <will@kernel.org>
R: Robin Murphy <robin.murphy@arm.com>
--
2.26.2.526.g744177e7f7-goog
next prev parent reply other threads:[~2020-05-05 3:13 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-05 3:13 [PATCH v6 0/2] Add a watchdog driver that uses ARM Secure Monitor Calls Evan Benn
2020-05-05 3:13 ` Evan Benn
2020-05-05 3:13 ` Evan Benn
2020-05-05 3:13 ` Evan Benn [this message]
2020-05-05 19:09 ` [PATCH v6 1/2] dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog Rob Herring
2020-05-06 13:45 ` Guenter Roeck
2020-05-05 3:13 ` [PATCH v6 2/2] watchdog: Add new arm_smc_wdt watchdog driver Evan Benn
2020-05-05 3:13 ` Evan Benn
2020-05-05 3:13 ` Evan Benn
2020-05-05 20:09 ` Julius Werner
2020-05-05 20:09 ` Julius Werner
2020-05-05 20:09 ` Julius Werner
2020-05-06 6:21 ` Xingyu Chen
2020-05-06 6:21 ` Xingyu Chen
2020-05-06 6:21 ` Xingyu Chen
2020-05-06 13:46 ` Guenter Roeck
2020-05-06 13:46 ` Guenter Roeck
2020-05-06 13:46 ` Guenter Roeck
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