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Mon, 9 Mar 2026 16:53:07 +0100 (CET) Received: by pc63539-2527.se.axis.com (Postfix, from userid 17419) id 4076E6074F0E; Mon, 9 Mar 2026 16:53:07 +0100 (CET) From: =?utf-8?q?Andr=C3=A9_Svensson?= Subject: [PATCH 0/2] Allow caching of buck registers when no GPIO input control is configured Date: Mon, 9 Mar 2026 16:52:34 +0100 Message-ID: <20260309-no-gpio-control-v1-0-06d2365917c6@axis.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="utf-8" Content-Transfer-Encoding: 8bit X-B4-Tracking: v=1; b=H4sIAMLsrmkC/x3MQQqAIBBA0avErBswi8iuEi3KJhsIJzQiEO+et HyL/xNECkwRxipBoIcjiy9o6grssXhHyFsxaKV71SqDXtBdLGjF30FONNYqvTY0GNNBqa5AO7/ /cZpz/gAd7CYqYQAAAA== X-Change-ID: 20260309-no-gpio-control-9cc02b1e8994 To: Support Opensource , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adam Ward CC: , , , Waqar Hameed , =?utf-8?q?Andr=C3=A9_Svensson?= X-Mailer: b4 0.14.3 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AMS0EPF000001A8:EE_|AM7PR02MB5971:EE_ X-MS-Office365-Filtering-Correlation-Id: 44e316b7-01b7-4b47-039c-08de7df3f647 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|376014|1800799024|82310400026; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: MEg8PatppFG5wnPnL/6RqR7EOoYQkZ4IXMpH2NftWIGo/YUupTG+yi79Ne/jN1Jsn4uO4WLrZIp85tQpsBfmZN14YbJG5NAQUskoqm74FlIP2h8z0vuixZoB7u++ewLoh7wO98Z2yiOrtMcJtSDsxjcMxBxhxtrXP+p2yu3X7cuBg4cZM3cOwRKWz0wuUWiU5phIEDfMZ6s6G4rSfL+cU6Mqq9efe8XZJXqrmRA8t79iXjddQzcYusFhAolmz7rNppdYnPvZg9T1YpBbs0iNFQVXYlzBLH1oAdG/smK2bL8kZ7nJacf5AcYoFDovpZliUaDJ8+o9Z5z/JWgN9/dD90glAuqC9SjRJM07BCgbDx2Pmwf2EPNL/RwY1djWyIDuf5V1xBsEPkXRmw56FCt1dasjnGdU7icjnvPQLlBDVUOAWBiW92or5vpAE31yP5ml X-OriginatorOrg: axis.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Mar 2026 15:53:09.5158 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 44e316b7-01b7-4b47-039c-08de7df3f647 X-MS-Exchange-CrossTenant-Id: 78703d3c-b907-432f-b066-88f7af9ca3af X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=78703d3c-b907-432f-b066-88f7af9ca3af;Ip=[195.60.68.100];Helo=[mail.axis.com] X-MS-Exchange-CrossTenant-AuthSource: AMS0EPF000001A8.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM7PR02MB5971 This series introduces a boolean DT property, dlg,no-gpio-control, for the DA91xx regulators. Use this property to indicate that GPIO control is not configured with the functions DVC/RELOAD/EN, allowing buck registers to be cached. The DA9121 driver checks dlg,no-gpio-control and updates regmap_config's volatile_table if the property is present. Buck registers are removed from the volatile_table if the property is present, enabling caching of the registers, which removes I2C reads when performing an I2C write to the buck registers. --- André Svensson (2): regulator: dt-bindings: dlg,da9121: Add dlg,no-gpio-control regulator: da9121: Allow caching BUCK registers .../devicetree/bindings/regulator/dlg,da9121.yaml | 49 ++++++++++++++++++++++ drivers/regulator/da9121-regulator.c | 35 +++++++++++++--- 2 files changed, 78 insertions(+), 6 deletions(-) --- base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b change-id: 20260309-no-gpio-control-9cc02b1e8994 Best regards, -- André Svensson