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([46.10.240.40]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43796a5d156sm35757690f8f.5.2026.02.17.00.12.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Feb 2026 00:12:12 -0800 (PST) From: Stoyan Bogdanov To: jbrunet@baylibre.com, linux@roeck-us.net, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, corbet@lwn.net, skhan@linuxfoundation.org Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Stoyan Bogdanov Subject: [PATCH v3 3/3] hwmon: (pmbus/tps1689): Add TPS1689 support Date: Tue, 17 Feb 2026 10:12:03 +0200 Message-Id: <20260217081203.1792025-4-sbogdanov@baylibre.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260217081203.1792025-1-sbogdanov@baylibre.com> References: <20260217081203.1792025-1-sbogdanov@baylibre.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Extend tps25990 existing driver to support tps1689 eFuse, since they are sharing command interface and functionality Update documentation for tps1689 Signed-off-by: Stoyan Bogdanov --- Documentation/hwmon/tps25990.rst | 15 ++++-- drivers/hwmon/pmbus/tps25990.c | 91 ++++++++++++++++++++++++++++---- 2 files changed, 92 insertions(+), 14 deletions(-) diff --git a/Documentation/hwmon/tps25990.rst b/Documentation/hwmon/tps2599= 0.rst index 04faec780d26..e8bc9a550bda 100644 --- a/Documentation/hwmon/tps25990.rst +++ b/Documentation/hwmon/tps25990.rst @@ -9,26 +9,31 @@ Supported chips: =20 Prefix: 'tps25990' =20 - * Datasheet + Datasheet: Publicly available at Texas Instruments website: https://ww= w.ti.com/lit/gpn/tps25990 =20 - Publicly available at Texas Instruments website: https://www.ti.com/li= t/gpn/tps25990 + * TI TPS1689 + + Prefix: 'tps1689' + + Datasheet: Publicly available at Texas Instruments website: https://ww= w.ti.com/lit/gpn/tps1689 =20 Author: =20 Jerome Brunet + Stoyan Bogdanov =20 Description ----------- =20 -This driver implements support for TI TPS25990 eFuse. +This driver implements support for TI TPS25990 and TI TPS1689 eFuse chips. This is an integrated, high-current circuit protection and power management device with PMBUS interface =20 -Device compliant with: +Devices are compliant with: =20 - PMBus rev 1.3 interface. =20 -Device supports direct format for reading input voltages, +Devices supports direct format for reading input voltages, output voltage, input current, input power and temperature. =20 Due to the specificities of the chip, all history reset attributes diff --git a/drivers/hwmon/pmbus/tps25990.c b/drivers/hwmon/pmbus/tps25990.c index 33f6367f797c..f9ff4edadf53 100644 --- a/drivers/hwmon/pmbus/tps25990.c +++ b/drivers/hwmon/pmbus/tps25990.c @@ -58,34 +58,38 @@ struct tps25990_data { struct local_direct_value *info_local; }; =20 -static int tps25990_raw_to_value(struct i2c_client *client, int param, int= raw) +static int tps25990_raw_to_value(struct i2c_client *client, int param, u32= raw) { struct tps25990_data *data =3D (struct tps25990_data *)of_device_get_matc= h_data(&client->dev); struct local_direct_value *info_local =3D data->info_local; + int val; =20 /* Formula : X =3D (Y / 10^R - b) / m */ if (info_local->R[param] >=3D 0) - raw /=3D int_pow(10, info_local->R[param]); + val =3D DIV_ROUND_CLOSEST_ULL(raw, int_pow(10, info_local->R[param])); else - raw *=3D int_pow(10, -info_local->R[param]); + val =3D raw * int_pow(10, -info_local->R[param]); =20 - return DIV_ROUND_CLOSEST(raw - info_local->b[param], info_local->m[param]= ); + val =3D DIV_ROUND_CLOSEST(val - info_local->b[param], info_local->m[param= ]); + + return val; } =20 static unsigned int tps25990_value_to_raw(struct i2c_client *client, int p= aram, int val) { struct tps25990_data *data =3D (struct tps25990_data *)of_device_get_matc= h_data(&client->dev); struct local_direct_value *info_local =3D data->info_local; + u32 raw; // return raw up to u16 -> u32 =20 /* Formula : Y =3D ( m * X + b) * 10^R */ - val =3D (long)val * info_local->m[param] + info_local->b[param]; + raw =3D ((long)val * info_local->m[param]) + info_local->b[param]; =20 if (info_local->R[param] >=3D 0) - val *=3D int_pow(10, info_local->R[param]); + raw *=3D int_pow(10, info_local->R[param]); else - val =3D DIV_ROUND_CLOSEST(val, int_pow(10, -info_local->R[param])); + raw =3D DIV_ROUND_CLOSEST_ULL(raw, int_pow(10, -info_local->R[param])); =20 - return val; + return raw; } =20 /* @@ -281,7 +285,6 @@ static int tps25990_write_word_data(struct i2c_client *= client, value =3D clamp_val(value, 0, 0xff); ret =3D pmbus_write_word_data(client, page, reg, value); break; - case PMBUS_VIN_OV_FAULT_LIMIT: value =3D tps25990_value_to_raw(client, TPS25990_VIN_OVF, value); value =3D clamp_val(value, 0, 0xf); @@ -370,6 +373,15 @@ static const struct regulator_desc tps25990_reg_desc[]= =3D { }; #endif =20 +struct local_direct_value tps1689_local_info =3D { + .m[TPS25990_VIN_OVF] =3D 3984, + .b[TPS25990_VIN_OVF] =3D -63750, + .R[TPS25990_VIN_OVF] =3D -3, + .m[TPS25990_IIN_OCF] =3D 7111, + .b[TPS25990_IIN_OCF] =3D -2133, + .R[TPS25990_IIN_OCF] =3D -2, +}; + struct local_direct_value tps25590_local_info =3D { .m[TPS25990_VIN_OVF] =3D 10163, .b[TPS25990_VIN_OVF] =3D -30081, @@ -379,6 +391,60 @@ struct local_direct_value tps25590_local_info =3D { .R[TPS25990_IIN_OCF] =3D -6, }; =20 +static struct pmbus_driver_info tps1689_base_info =3D { + .pages =3D 1, + .format[PSC_VOLTAGE_IN] =3D direct, + .m[PSC_VOLTAGE_IN] =3D 1166, + .b[PSC_VOLTAGE_IN] =3D 0, + .R[PSC_VOLTAGE_IN] =3D -2, + .format[PSC_VOLTAGE_OUT] =3D direct, + .m[PSC_VOLTAGE_OUT] =3D 1166, + .b[PSC_VOLTAGE_OUT] =3D 0, + .R[PSC_VOLTAGE_OUT] =3D -2, + .format[PSC_TEMPERATURE] =3D direct, + .m[PSC_TEMPERATURE] =3D 140, + .b[PSC_TEMPERATURE] =3D 32103, + .R[PSC_TEMPERATURE] =3D -2, + /* + * Current and Power measurement depends on the ohm value + * of Rimon. m is multiplied by 1000 below to have an integer + * and -3 is added to R to compensate. + */ + .format[PSC_CURRENT_IN] =3D direct, + .m[PSC_CURRENT_IN] =3D 9548, + .b[PSC_CURRENT_IN] =3D 0, + .R[PSC_CURRENT_IN] =3D -6, + .format[PSC_CURRENT_OUT] =3D direct, + .m[PSC_CURRENT_OUT] =3D 24347, + .b[PSC_CURRENT_OUT] =3D 0, + .R[PSC_CURRENT_OUT] =3D -3, + .format[PSC_POWER] =3D direct, + .m[PSC_POWER] =3D 2775, + .b[PSC_POWER] =3D 0, + .R[PSC_POWER] =3D -4, + .func[0] =3D (PMBUS_HAVE_VIN | + PMBUS_HAVE_VOUT | + PMBUS_HAVE_VMON | + PMBUS_HAVE_IIN | + PMBUS_HAVE_PIN | + PMBUS_HAVE_TEMP | + PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_SAMPLES), + + .read_word_data =3D tps25990_read_word_data, + .write_word_data =3D tps25990_write_word_data, + .read_byte_data =3D tps25990_read_byte_data, + .write_byte_data =3D tps25990_write_byte_data, + +#if IS_ENABLED(CONFIG_SENSORS_TPS25990_REGULATOR) + .reg_desc =3D tps25990_reg_desc, + .num_regulators =3D ARRAY_SIZE(tps25990_reg_desc), +#endif +}; + static struct pmbus_driver_info tps25990_base_info =3D { .pages =3D 1, .format[PSC_VOLTAGE_IN] =3D direct, @@ -428,18 +494,25 @@ static struct pmbus_driver_info tps25990_base_info = =3D { #endif }; =20 +struct tps25990_data data_tps1689 =3D { + .info =3D &tps1689_base_info, + .info_local =3D &tps1689_local_info, +}; + struct tps25990_data data_tps25990 =3D { .info =3D &tps25990_base_info, .info_local =3D &tps25590_local_info, }; =20 static const struct i2c_device_id tps25990_i2c_id[] =3D { + { .name =3D "tps1689", .driver_data =3D (kernel_ulong_t)&data_tps1689 }, { .name =3D "tps25990", .driver_data =3D (kernel_ulong_t)&data_tps25990 }, {} }; MODULE_DEVICE_TABLE(i2c, tps25990_i2c_id); =20 static const struct of_device_id tps25990_of_match[] =3D { + { .compatible =3D "ti,tps1689", .data =3D &data_tps1689 }, { .compatible =3D "ti,tps25990", .data =3D &data_tps25990 }, {} }; --=20 2.34.1