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Fri, 9 Oct 2026 22:13:35 -0500 Received: from [10.250.144.147] ([10.250.144.147]) by lelvem-mr05.itg.ti.com (8.18.1/8.18.1) with ESMTP id 69A3DTEZ2329897; Fri, 9 Oct 2026 22:13:32 -0500 Message-ID: Date: Fri, 9 Oct 2026 22:13:28 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 5/7] ASoC: codec: pcm1681: Enable the PCM1681 supplies To: Mohammad Rafi Shaik , Shenghao Ding , Kevin Lu , Baojun Xu , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , Srinivas Kandagatla , Shawn Guo CC: , , , References: <20261009-nord-asoc-driver-support-v3-v3-0-0c1897f21ccf@oss.qualcomm.com> <20261009-nord-asoc-driver-support-v3-v3-5-0c1897f21ccf@oss.qualcomm.com> Content-Language: en-US From: "Wang, Sen" In-Reply-To: <20261009-nord-asoc-driver-support-v3-v3-5-0c1897f21ccf@oss.qualcomm.com> Content-Type: text/plain; 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That only holds when the rails are > hardwired or left on by the bootloader. Boards which gate them, like > the Qualcomm Nord RRD and Ride, have no way to get them enabled, and > the first register access then fails. > > Enable the VCC1, VCC2 and VDD supplies before touching the clock or the > regmap, so that the DAC is powered whenever the driver is bound. The > supplies are optional as far as the regulator core is concerned, so > boards which do not describe them keep working through the dummy > regulator. > > Signed-off-by: Shawn Guo > Signed-off-by: Mohammad Rafi Shaik > --- Reviewed-by: Sen Wang