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Mon, 01 Jun 2026 08:19:06 -0700 (PDT) From: Svyatoslav Ryhel To: Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Cameron , David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , Helge Deller , Svyatoslav Ryhel Cc: Johan Hovold , dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-fbdev@vger.kernel.org Subject: [PATCH v3 06/11] mfd: lm3533: Add support for VIN power supply Date: Mon, 1 Jun 2026 18:18:26 +0300 Message-ID: <20260601151831.76350-7-clamor95@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260601151831.76350-1-clamor95@gmail.com> References: <20260601151831.76350-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add support for 2.7V-5.5V VIN power supply. Signed-off-by: Svyatoslav Ryhel --- drivers/mfd/lm3533-core.c | 23 +++++++++++++++++++++-- include/linux/mfd/lm3533.h | 2 ++ 2 files changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c index d57c2cdf11c5..4dca5641b774 100644 --- a/drivers/mfd/lm3533-core.c +++ b/drivers/mfd/lm3533-core.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -113,14 +114,25 @@ static int lm3533_set_lvled_config(struct lm3533 *lm3533, u8 lvled, u8 led) return ret; } -static void lm3533_enable(struct lm3533 *lm3533) +static int lm3533_enable(struct lm3533 *lm3533) { + int ret; + + ret = regulator_enable(lm3533->vin_supply); + if (ret) { + dev_err(lm3533->dev, "failed to enable vin power supply\n"); + return ret; + } + gpiod_set_value(lm3533->hwen, 1); + + return 0; } static void lm3533_disable(struct lm3533 *lm3533) { gpiod_set_value(lm3533->hwen, 0); + regulator_disable(lm3533->vin_supply); } enum lm3533_attribute_type { @@ -334,7 +346,9 @@ static int lm3533_device_init(struct lm3533 *lm3533) } } - lm3533_enable(lm3533); + ret = lm3533_enable(lm3533); + if (ret) + return ret; ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM, LM3533_BOOST_FREQ_MASK, @@ -458,6 +472,11 @@ static int lm3533_i2c_probe(struct i2c_client *i2c) return dev_err_probe(lm3533->dev, PTR_ERR(lm3533->hwen), "failed to get HWEN GPIO\n"); + lm3533->vin_supply = devm_regulator_get(lm3533->dev, "vin"); + if (IS_ERR(lm3533->vin_supply)) + return dev_err_probe(lm3533->dev, PTR_ERR(lm3533->vin_supply), + "failed to get vin-supply\n"); + device_property_read_u32(lm3533->dev, "ti,boost-ovp-microvolt", &lm3533->boost_ovp); diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h index 3fd8d4737ea5..9ee99be93d9b 100644 --- a/include/linux/mfd/lm3533.h +++ b/include/linux/mfd/lm3533.h @@ -22,6 +22,7 @@ struct device; struct gpio_desc; struct regmap; +struct regulator; struct lm3533 { struct device *dev; @@ -29,6 +30,7 @@ struct lm3533 { struct regmap *regmap; struct gpio_desc *hwen; + struct regulator *vin_supply; u32 boost_ovp; u32 boost_freq; -- 2.51.0