From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4AC221F91F6; Wed, 19 Aug 2026 14:17:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787149038; cv=none; b=PL+ZyoIpvhKyn/vfK8IWCyHv3hSx6F+X6FI+ixM+iR0Q6x3+IOF3EPThkrWmvENz9ODVNtbJTR6zxZFCuJDPYiilalytJ1OWv0+ObC4sCP/85BT7/nS4iKEqe1kP2zA8bpC1B4VxGo8wRLOfI8AdFlrALidZjqwnVgVmvwbUq6A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787149038; c=relaxed/simple; bh=7E1Su1F4qolwv3/mfAgdoIoQgeCmyyyC+e/XU95cKaU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=oqHff2nKEKb28qmVZSxpWU3brFExovtXj1EuV7uR6RD7Mc0+SjHX61PksY4QGRYgr3nSK2O1Q0O1XFMvBiL6qEbNoyJ9tRKuZVO69v+iZ5oGAROOj/2dY3Uog7nJ1o84ArlifgEz3qyIbAAtQ6S45Qkj3LLvaax3L/twu6X9GXc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=TFhvUEcr; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="TFhvUEcr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1787149038; x=1818685038; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=7E1Su1F4qolwv3/mfAgdoIoQgeCmyyyC+e/XU95cKaU=; b=TFhvUEcrBZRz86pYDGX55pv3IxnZK9OEOFt1rwDnOH/7twWXq1CHBqhx 9Hll5n7Susr1gVxg3G4UueShroRODDqD0UzWULPHMElVK/yMHdwXh2G9g ey7dLjRPxydBhOo4y0li12gQtZXywpVj6+hpCWCU8TK3Y/oE1aE4sIZ1+ Jgv8TCSrHyZcfjpZ2AuubUKUSQf6uMkG9eyLlcfqrh4HQoXhwX3HDQQ3C +icPvYDVEzGZcPgRaIp5uQMv+xEkmcOz4Z8S7jUql8SsHpWkWWPthmXrw HXNX/lPm7BM4bXbGUbM4IVqN/cJoCqCUrR8Mf/2E4NMg0QoyFLTgxrpGW g==; X-CSE-ConnectionGUID: pR51VxcwQOa8u85PUMWHoA== X-CSE-MsgGUID: QtPedjHkSDy0Uylga5kCsg== X-IronPort-AV: E=McAfee;i="6800,10657,11880"; a="110451123" X-IronPort-AV: E=Sophos;i="6.25,231,1779174000"; d="scan'208";a="110451123" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2026 07:17:17 -0700 X-CSE-ConnectionGUID: ISZhsaCiRQGZSHVnw2iGww== X-CSE-MsgGUID: iqVYcWDkRX6/hSrJx7pJfQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,231,1779174000"; d="scan'208";a="264241227" Received: from amilburn-desk.amilburn-desk (HELO localhost) ([10.245.244.106]) by orviesa010-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2026 07:17:14 -0700 Date: Wed, 19 Aug 2026 17:17:11 +0300 From: Andy Shevchenko To: Ariana Lazar Cc: Jonathan Cameron , David Lechner , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org Subject: Re: [PATCH v4 1/9] iio: dac: mcp47feb02: initialize dac_data field in channel data struct at probe Message-ID: References: <20260819-mcp47feb02_refactor-v4-0-beb2aa3bfd09@microchip.com> <20260819-mcp47feb02_refactor-v4-1-beb2aa3bfd09@microchip.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260819-mcp47feb02_refactor-v4-1-beb2aa3bfd09@microchip.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo On Wed, Aug 19, 2026 at 03:41:05PM +0300, Ariana Lazar wrote: > Read DAC value register to initialize corresponding field in channel_data > struct when the module is inserted. Since we have a cache enabled for regmap, can we rather read back initial HW values at the probe time for all non-volatile or precise registers? -- With Best Regards, Andy Shevchenko