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Mon, 19 Oct 2026 03:09:46 -0700 (PDT) From: Svyatoslav Ryhel To: Lee Jones , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Liam Girdwood , Mark Brown , Daniel Thompson , Jingoo Han , Svyatoslav Ryhel Cc: linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, mfd@lists.linux.dev, dri-devel@lists.freedesktop.org Subject: [PATCH v4 4/4] mfd: aat2870: Add support for VIN and IN-LDO power supplies Date: Mon, 19 Oct 2026 13:09:30 +0300 Message-ID: <20261019100930.110954-5-clamor95@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261019100930.110954-1-clamor95@gmail.com> References: <20261019100930.110954-1-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 The AAT2870 supports a dedicated main power supply input alongside parent power supply for its internal regulators. Add support for retrieving and managing these supply regulators (vin-supply and in-ldo-supply) using the regulator framework to ensure proper power supply dependencies and power-up sequencing. Signed-off-by: Svyatoslav Ryhel --- drivers/mfd/aat2870-core.c | 5 +++++ drivers/regulator/aat2870-regulator.c | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/mfd/aat2870-core.c b/drivers/mfd/aat2870-core.c index fe43ef675f257..0284c5fa8fb54 100644 --- a/drivers/mfd/aat2870-core.c +++ b/drivers/mfd/aat2870-core.c @@ -17,6 +17,7 @@ #include #include #include +#include #include struct aat2870_register { @@ -309,6 +310,10 @@ static int aat2870_i2c_probe(struct i2c_client *client) aat2870->reg_cache = aat2870_regs; + ret = devm_regulator_get_enable(&client->dev, "vin"); + if (ret) + return dev_err_probe(&client->dev, ret, "Failed to enable regulator\n"); + aat2870->en_pin = devm_gpiod_get_optional(&client->dev, "enable", GPIOD_OUT_HIGH); if (IS_ERR(aat2870->en_pin)) diff --git a/drivers/regulator/aat2870-regulator.c b/drivers/regulator/aat2870-regulator.c index 73b6d06858cff..896f39e345379 100644 --- a/drivers/regulator/aat2870-regulator.c +++ b/drivers/regulator/aat2870-regulator.c @@ -105,6 +105,7 @@ static const unsigned int aat2870_ldo_voltages[] = { #define AAT2870_LDO(ids, match, vsel, vmask) { \ .name = #ids, \ .of_match = (match), \ + .supply_name = "in-ldo", \ .id = AAT2870_ID_##ids, \ .n_voltages = ARRAY_SIZE(aat2870_ldo_voltages), \ .volt_table = aat2870_ldo_voltages, \ -- 2.53.0