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Signed-off-by: Zoie Lin --- drivers/misc/eeprom/at24.c | 37 +++++++++++++++++++++++++++++++++++-- 1 file changed, 35 insertions(+), 2 deletions(-) diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 572333ead5fb..b96f6eda3ad2 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -86,6 +86,7 @@ struct at24_data { =20 struct nvmem_device *nvmem; struct regulator *vcc_reg; + struct regulator *dovdd_reg; void (*read_post)(unsigned int off, char *buf, size_t count); =20 /* @@ -697,6 +698,14 @@ static int at24_probe(struct i2c_client *client) if (IS_ERR(at24->vcc_reg)) return PTR_ERR(at24->vcc_reg); =20 + at24->dovdd_reg =3D devm_regulator_get_optional(dev, "dovdd"); + if (IS_ERR(at24->dovdd_reg)) { + if (PTR_ERR(at24->dovdd_reg) =3D=3D -ENODEV) + at24->dovdd_reg =3D NULL; + else + return PTR_ERR(at24->dovdd_reg); + } + writable =3D !(flags & AT24_FLAG_READONLY); if (writable) { at24->write_max =3D min_t(unsigned int, @@ -754,6 +763,14 @@ static int at24_probe(struct i2c_client *client) return err; } =20 + if (at24->dovdd_reg !=3D NULL) { + err =3D regulator_enable(at24->dovdd_reg); + if (err) { + dev_err(dev, "Failed to enable dovdd regulator\n"); + return err; + } + } + pm_runtime_set_active(dev); } pm_runtime_enable(dev); @@ -761,8 +778,11 @@ static int at24_probe(struct i2c_client *client) at24->nvmem =3D devm_nvmem_register(dev, &nvmem_config); if (IS_ERR(at24->nvmem)) { pm_runtime_disable(dev); - if (!pm_runtime_status_suspended(dev)) + if (!pm_runtime_status_suspended(dev)) { regulator_disable(at24->vcc_reg); + if (at24->dovdd_reg !=3D NULL) + regulator_disable(at24->dovdd_reg); + } return dev_err_probe(dev, PTR_ERR(at24->nvmem), "failed to register nvmem\n"); } @@ -804,8 +824,11 @@ static void at24_remove(struct i2c_client *client) =20 pm_runtime_disable(&client->dev); if (acpi_dev_state_d0(&client->dev)) { - if (!pm_runtime_status_suspended(&client->dev)) + if (!pm_runtime_status_suspended(&client->dev)) { regulator_disable(at24->vcc_reg); + if (at24->dovdd_reg !=3D NULL) + regulator_disable(at24->dovdd_reg); + } pm_runtime_set_suspended(&client->dev); } } @@ -815,14 +838,24 @@ static int __maybe_unused at24_suspend(struct device = *dev) struct i2c_client *client =3D to_i2c_client(dev); struct at24_data *at24 =3D i2c_get_clientdata(client); =20 + if (at24->dovdd_reg !=3D NULL) + regulator_disable(at24->dovdd_reg); + return regulator_disable(at24->vcc_reg); } =20 static int __maybe_unused at24_resume(struct device *dev) { + int err; struct i2c_client *client =3D to_i2c_client(dev); struct at24_data *at24 =3D i2c_get_clientdata(client); =20 + if (at24->dovdd_reg !=3D NULL) { + err =3D regulator_enable(at24->dovdd_reg); + if (err) + return err; + } + return regulator_enable(at24->vcc_reg); } =20 --=20 2.18.0 From nobody Thu Sep 19 19:41:54 2024 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (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 6FAAF14430A; Fri, 26 Apr 2024 10:30:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" From: Zoie Lin Update EEPROM bindings to include Atmel AT24C64 Signed-off-by: Zoie Lin --- Documentation/devicetree/bindings/eeprom/at24.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/eeprom/at24.yaml b/Documenta= tion/devicetree/bindings/eeprom/at24.yaml index 1812ef31d5f1..8befd09963be 100644 --- a/Documentation/devicetree/bindings/eeprom/at24.yaml +++ b/Documentation/devicetree/bindings/eeprom/at24.yaml @@ -131,6 +131,8 @@ properties: - items: - const: giantec,gt24c32a - const: atmel,24c32 + - items: + - const: atmel,24c64 - items: - enum: - renesas,r1ex24128 --=20 2.18.0 From nobody Thu Sep 19 19:41:54 2024 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (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 092041442F5; Fri, 26 Apr 2024 10:30:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" From: Zoie Lin Include a new property named dovdd-supply to provide an additional power supply. Signed-off-by: Zoie Lin --- Documentation/devicetree/bindings/eeprom/at24.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/eeprom/at24.yaml b/Documenta= tion/devicetree/bindings/eeprom/at24.yaml index 8befd09963be..0ecb7ea76d1d 100644 --- a/Documentation/devicetree/bindings/eeprom/at24.yaml +++ b/Documentation/devicetree/bindings/eeprom/at24.yaml @@ -193,6 +193,10 @@ properties: description: phandle of the regulator that provides the supply voltage. =20 + dovdd-supply: + description: + phandle of the regulator that provides the supply voltage. + required: - compatible - reg --=20 2.18.0