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Thu, 24 Aug 2023 23:49:22 -0700 (PDT) Received: from [192.168.0.22] ([77.252.47.198]) by smtp.gmail.com with ESMTPSA id h1-20020a1709062dc100b00992b1c93279sm595709eji.110.2023.08.24.23.49.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 24 Aug 2023 23:49:22 -0700 (PDT) Message-ID: <2eda319d-bdd9-bfeb-005a-5989cf674501@linaro.org> Date: Fri, 25 Aug 2023 08:49:21 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.14.0 Subject: Re: [PATCH 1/2] TSD: arm64: dts: rockchip: use codec as clock master Content-Language: en-US To: Jakob Unterwurzacher , Rob Herring , Krzysztof Kozlowski , Heiko Stuebner Cc: jakob.unterwurzacher@theobroma-systems.com, Ermin Sunj , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org References: <20230823122000.585787-1-jakob.unterwurzacher@theobroma-systems.com> From: Krzysztof Kozlowski In-Reply-To: <20230823122000.585787-1-jakob.unterwurzacher@theobroma-systems.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230824_234926_867620_DB4E95C4 X-CRM114-Status: GOOD ( 13.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 23/08/2023 14:19, Jakob Unterwurzacher wrote: > From: Ermin Sunj > > If the codec is not the clock master, the MCLK needs to be > synchronous to both I2S_SCL ans I2S_LRCLK. We do not have that > on Haikou, causing distorted audio. > > Before: > > Running audioloopback.py script on Ringneck, 1kHz > output sine wave is not stable and shows distortion. > > After: > > 10h stress tests audioloopback.py failed only one time. > That is 0.00014% failure rate. What is TSD? Why it is in the subject prefix? Please use subject prefixes matching the subsystem. You can get them for example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory your patch is touching. Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel