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([2a01:e0a:106d:1080:ef1f:5ab3:36fa:3ccb]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a1972eaed8sm253144205e9.1.2026.10.13.07.09.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Oct 2026 07:09:52 -0700 (PDT) Message-ID: <8b331c92-ce18-4886-ba87-77b6156cc9a1@linaro.org> Date: Tue, 13 Oct 2026 16:09:51 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Neil Armstrong Reply-To: Neil Armstrong Subject: Re: [PATCH 2/3] arm64: dts: qcom: sm8650: Add watchdog node To: Konrad Dybcio , Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Rajendra Nayak , Bjorn Andersson , Konrad Dybcio , Abel Vesa Cc: linux-arm-msm@vger.kernel.org, linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261002-topic-sm8650-deckard-watchdog-v1-0-7d7f7d71d88a@linaro.org> <20261002-topic-sm8650-deckard-watchdog-v1-2-7d7f7d71d88a@linaro.org> Content-Language: en-US, fr Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+ SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g Organization: Linaro In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/13/26 11:21, Konrad Dybcio wrote: > On 10/2/26 11:45 AM, Neil Armstrong wrote: >> Add a node for the watchdog on the SM8650 SoC, the node >> is marked as reserved since on most platforms the Watchdog >> is owned by the Gunyah Hypervisor. >> >> Signed-off-by: Neil Armstrong >> --- > > Do you have a HDK or something with gunyah at hand? A couple months > ago qcom_scm_gunyah_wdt_init() was introduced to handle this - > could you enable the node and give it a shot if you have one? Why enabling the node ? the qcom_scm_gunyah_wdt_init() will bail out if the node is enabled. Here we only want the node to be enabled when we are in EL1 without Gunyah. Neil > > Konrad > >> arch/arm64/boot/dts/qcom/sm8650.dtsi | 8 ++++++++ >> 1 file changed, 8 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi >> index 86fbb0fd6472..f33ed7909a8e 100644 >> --- a/arch/arm64/boot/dts/qcom/sm8650.dtsi >> +++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi >> @@ -7311,6 +7311,14 @@ gic_its: msi-controller@17140000 { >> }; >> }; >> >> + watchdog: watchdog@17411000 { >> + compatible = "qcom,apss-wdt-sm8650", "qcom,kpss-wdt"; >> + reg = <0 0x17411000 0 0x1000>; >> + clocks = <&sleep_clk>; >> + interrupts = ; >> + status = "reserved"; /* Owned by hypervisor */ >> + }; >> + >> timer@17420000 { >> compatible = "arm,armv7-timer-mem"; >> reg = <0 0x17420000 0 0x1000>; >>