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Tue, 21 Apr 2020 04:05:49 -0700 (PDT) From: Evan Benn To: LKML Subject: [PATCH v2 1/2] dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog Date: Tue, 21 Apr 2020 21:05:19 +1000 Message-Id: <20200421210403.v2.1.Id96574f1f52479d7a2f3b866b8a0552ab8c03d7f@changeid> X-Mailer: git-send-email 2.26.1.301.g55bc3eb7cb9-goog In-Reply-To: <20200421110520.197930-1-evanbenn@chromium.org> References: <20200421110520.197930-1-evanbenn@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200421_040550_632313_5F909164 X-CRM114-Status: GOOD ( 12.51 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:443 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-watchdog@vger.kernel.org, Mauro Carvalho Chehab , Greg Kroah-Hartman , linux-mediatek@lists.infradead.org, Rob Herring , Evan Benn , xingyu.chen@amlogic.com, Matthias Brugger , jwerner@chromium.org, Wim Van Sebroeck , "David S. Miller" , Guenter Roeck Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.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 --- 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 | 36 +++++++++++++++++++ MAINTAINERS | 6 ++++ 2 files changed, 42 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..5379d9f798d84 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml @@ -0,0 +1,36 @@ +# 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 + +properties: + compatible: + enum: + - mediatek,mt8173-smc-wdt + arm,smc-id: + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - default: 0x82003D06 + description: + The ATF smc function id used by the firmware. + +required: + - compatible + +examples: + - | + watchdog { + compatible = "mediatek,mt8173-smc-wdt"; + 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 +R: Evan Benn +S: Maintained +F: devicetree/bindings/watchdog/arm-smc-wdt.yaml + ARM SMMU DRIVERS M: Will Deacon R: Robin Murphy