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([2a01:e0a:3d9:2080:b0fa:b045:4b82:de09]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b8e009e465sm31082080f8f.43.2025.08.11.00.50.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Aug 2025 00:50:36 -0700 (PDT) Message-ID: <09f29ccb-a074-48c4-b017-9d9cf1bc1cb0@linaro.org> Date: Mon, 11 Aug 2025 09:50:35 +0200 Precedence: bulk X-Mailing-List: dmaengine@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 3/8] arm64: dts: qcom: sm8550: Add missing properties for cryptobam To: Stephan Gerhold , Vinod Koul , Bjorn Andersson , Konrad Dybcio Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andy Gross , Srinivas Kandagatla , Yuvaraj Ranganathan , Anusha Rao , Md Sadre Alam , linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Luca Weiss References: <20250212-bam-dma-fixes-v1-0-f560889e65d8@linaro.org> <20250212-bam-dma-fixes-v1-3-f560889e65d8@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: <20250212-bam-dma-fixes-v1-3-f560889e65d8@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/02/2025 18:03, Stephan Gerhold wrote: > num-channels and qcom,num-ees are required for BAM nodes without clock, > because the driver cannot ensure the hardware is powered on when trying to > obtain the information from the hardware registers. Specifying the node > without these properties is unsafe and has caused early boot crashes for > other SoCs before [1, 2]. > > Add the missing information from the hardware registers to ensure the > driver can probe successfully without causing crashes. > > [1]: https://lore.kernel.org/r/CY01EKQVWE36.B9X5TDXAREPF@fairphone.com/ > [2]: https://lore.kernel.org/r/20230626145959.646747-1-krzysztof.kozlowski@linaro.org/ > > Cc: stable@vger.kernel.org > Fixes: 433477c3bf0b ("arm64: dts: qcom: sm8550: add QCrypto nodes") > Signed-off-by: Stephan Gerhold > --- > arch/arm64/boot/dts/qcom/sm8550.dtsi | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi > index eac8de4005d82f246bc50f64f09515631d895c99..ac3e00ad417719be2885d76d3197f96137848337 100644 > --- a/arch/arm64/boot/dts/qcom/sm8550.dtsi > +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi > @@ -1957,6 +1957,8 @@ cryptobam: dma-controller@1dc4000 { > interrupts = ; > #dma-cells = <1>; > qcom,ee = <0>; > + qcom,num-ees = <4>; > + num-channels = <20>; > qcom,controlled-remotely; > iommus = <&apps_smmu 0x480 0x0>, > <&apps_smmu 0x481 0x0>; > Reviewed-by: Neil Armstrong