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bh=kXXWpyKjaK7DwcYe+5XUUbyH6RNWVCkJ3QC/5EkaM0Y=; b=YiDuW7CAhnAyNa/lcxz0+91coVNz6WXi172bnqzYcziczoovpz2LKtK7UyJ/eid5hX QkZJs/iOypQ1HcFPu3XsLiXH4ZVff2trRoJvlboQt+cFkzzDxMMRfA5wMk7iYk6Ezbg3 BTV7XEgf2qZtsSG3dkuX0nn/Ge6H83uFJXFYhbghhSNuqv3/cC2ma12RfoNDvG1ujRmg zLj4jZUEMPB3JiTnVaK49b/f+6y4YwHGeIsHXjpV4qrixbsqaACDjfvVhszRS32Cvvk+ YAvNA6ZJpjvQnEtK0YciJvYovIETYBtY7Qjp0UTPLdQw+wAYj6foUqq7USSLnz8rhIym lmVg== X-Gm-Message-State: AOJu0YzDxLRGXHLg7B/XcnjbklDesvjUmdn/gOyvVIpQZDzE0Df0CAyN 2xVeNZLx7NXJ5cpOeQx65dnWDQ== X-Google-Smtp-Source: AGHT+IEIurED8huKwHW14J8ccCKS0kJ5gkxIqQCQnQLtx99nfJT1Xuajn8thmM30NcJdyHOBHxinAQ== X-Received: by 2002:a05:600c:3c93:b0:407:4701:f9e with SMTP id bg19-20020a05600c3c9300b0040747010f9emr8863144wmb.17.1698065558628; Mon, 23 Oct 2023 05:52:38 -0700 (PDT) Received: from [192.168.1.20] ([178.197.218.126]) by smtp.gmail.com with ESMTPSA id i21-20020a05600c355500b00405bbfd5d16sm9509384wmq.7.2023.10.23.05.52.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 23 Oct 2023 05:52:38 -0700 (PDT) Message-ID: <38aa02c4-5b8d-4978-96a2-241fe5f94b50@linaro.org> Date: Mon, 23 Oct 2023 14:52:36 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 1/5] dt-bindings: soc: qcom: Add memory_dump driver bindings Content-Language: en-US To: Zhenhua Huang , agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@quicinc.com, quic_tingweiz@quicinc.com References: <1698052857-6918-1-git-send-email-quic_zhenhuah@quicinc.com> <1698052857-6918-2-git-send-email-quic_zhenhuah@quicinc.com> <27fcdcc1-b29b-43b2-8b1a-c648dd9e696c@linaro.org> From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 23/10/2023 13:54, Zhenhua Huang wrote: > > > On 2023/10/23 17:27, Krzysztof Kozlowski wrote: >> On 23/10/2023 11:20, Zhenhua Huang wrote: >>> Add bindings for the QCOM Memory Dump driver providing debug >> >> Bindings are for hardware, not driver. This suggests it is not suitable >> for bindings at all. >> >>> facilities. Firmware dumps system cache, internal memory, >>> peripheral registers to reserved DDR as per the table which >>> populated by the driver, after crash and warm reset. >> >> Again driver :/ > > Thanks for pointing out. Qualcomm memory dump device is a reserved > memory region which is used to communicate with firmware. I will update > description in next version. I have still doubts that it is suitable for DT. I usually expect such firmware feature-drivers to be instantiated by existing firmware drivers. You do not need DT for this. Best regards, Krzysztof