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[2a02:8440:7503:805b:76:f865:8f03:23d3]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3ee073f4f3csm26375517f8f.2.2025.09.24.03.00.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 24 Sep 2025 03:00:18 -0700 (PDT) Message-ID: <430e9fad-a877-4328-848f-59b982a10706@gmail.com> Date: Wed, 24 Sep 2025 12:00:17 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 2/7] dt-bindings: memory: introduce DDR4 To: Julius Werner Cc: Krzysztof Kozlowski , Rob Herring , Conor Dooley , Krzysztof Kozlowski , Maxime Coquelin , Alexandre Torgue , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, =?UTF-8?Q?Cl=C3=A9ment_Le_Goffic?= References: <20250922-b4-ddr-bindings-v7-0-b3dd20e54db6@gmail.com> <20250922-b4-ddr-bindings-v7-2-b3dd20e54db6@gmail.com> Content-Language: en-US From: =?UTF-8?Q?Cl=C3=A9ment_Le_Goffic?= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 23/09/2025 00:51, Julius Werner wrote: >> + - pattern: "^ddr4-[0-9a-f]{4},[a-z]{1,10},[0-9a-f]{2}$" > > I don't really understand why there can only be up to 10 characters in > the module part number. I also don't understand why you wrote "20 > bytes (10 chars)" for this in the previous patch. Are you assuming > that module part numbers are UTF16LE? According to my reading of the > spec, it sounds like they're supposed to be plain ASCII, i.e. 20 bytes > should be able to contain up to 20 chars. Hi Julius, Yes plain ASCII needs 8 bits for each char as the value range is 0-127 I was having hexadecimal in mind while writing this, I'm sorry. I'll fix it here and in the previous patch. Best regards, Clément