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charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260618-b4-regulator-opt-v1-2-c43b1f62aaf6@oss.nxp.com> References: <20260618-b4-regulator-opt-v1-0-c43b1f62aaf6@oss.nxp.com> In-Reply-To: <20260618-b4-regulator-opt-v1-0-c43b1f62aaf6@oss.nxp.com> To: Liam Girdwood , Mark Brown , Frank Li , Ye Li , Jacky Bai , Peng Fan , Joy Zou Cc: imx@lists.linux.dev, linux-kernel@vger.kernel.org, Joy Zou X-Mailer: b4 0.15.2 X-ClientProxiedBy: JH0PR06CA0017.apcprd06.prod.outlook.com (2603:1096:990:77::14) To VI1PR04MB5807.eurprd04.prod.outlook.com (2603:10a6:803:ec::21) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI1PR04MB5807:EE_|DB8PR04MB7082:EE_ X-MS-Office365-Filtering-Correlation-Id: 98e7b65e-5b4b-4c71-0218-08deccdd70f8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|19092799006|366016|1800799024|23010399003|376014|22082099003|18002099003|11063799006|56012099006; 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This could lead to unnecessary I2C/SPI reads and potential performance issues. Ensures only volatile registers are read from the device on each access, while other registers can be cached by regmap. Fixes: 162e23657e53 ("regulator: pf0900: Add PMIC PF0900 support") Signed-off-by: Joy Zou --- drivers/regulator/pf0900-regulator.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/regulator/pf0900-regulator.c b/drivers/regulator/pf0900-regulator.c index 5c44d2dbcab4..bca76c58ed3b 100644 --- a/drivers/regulator/pf0900-regulator.c +++ b/drivers/regulator/pf0900-regulator.c @@ -284,13 +284,24 @@ struct pf0900_regulator_irq { unsigned int event; }; -static const struct regmap_range pf0900_range = { - .range_min = PF0900_REG_DEV_ID, - .range_max = PF0900_REG_SYS_DIAG, +static const struct regmap_range pf0900_range[] = { + regmap_reg_range(PF0900_REG_SYSTEM_INT, PF0900_REG_SYSTEM_INT), + regmap_reg_range(PF0900_REG_STATUS1_SNS, PF0900_REG_STATUS1_SNS), + regmap_reg_range(PF0900_REG_STATUS2_SNS, PF0900_REG_STATUS2_SNS), + regmap_reg_range(PF0900_REG_SW_ILIM_SNS, PF0900_REG_SW_ILIM_SNS), + regmap_reg_range(PF0900_REG_LDO_ILIM_SNS, PF0900_REG_LDO_ILIM_SNS), + regmap_reg_range(PF0900_REG_SW_UV_SNS, PF0900_REG_SW_UV_SNS), + regmap_reg_range(PF0900_REG_SW_OV_SNS, PF0900_REG_SW_OV_SNS), + regmap_reg_range(PF0900_REG_LDO_UV_SNS, PF0900_REG_LDO_UV_SNS), + regmap_reg_range(PF0900_REG_LDO_OV_SNS, PF0900_REG_LDO_OV_SNS), + regmap_reg_range(PF0900_REG_IO_SNS, PF0900_REG_ABIST_IO), + regmap_reg_range(PF0900_REG_SECURE_WR1, PF0900_REG_SECURE_WR1), + regmap_reg_range(PF0900_REG_WD_CNT1, PF0900_REG_WD_CNT2), + regmap_reg_range(PF0900_REG_SYS_DIAG, PF0900_REG_SYS_DIAG), }; static const struct regmap_access_table pf0900_volatile_regs = { - .yes_ranges = &pf0900_range, + .yes_ranges = pf0900_range, .n_yes_ranges = 1, }; -- 2.34.1