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Mon, 02 Feb 2026 00:04:34 -0800 (PST) From: ASHISH YADAV X-Google-Original-From: ASHISH YADAV To: Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Ashish Yadav Subject: [PATCH 1/2] dt-bindings: trivial-devices: Add support for XDPE1A2G5B/7B Date: Mon, 2 Feb 2026 13:33:54 +0530 Message-Id: <20260202080355.53061-2-Ashish.Yadav@infineon.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260202080355.53061-1-Ashish.Yadav@infineon.com> References: <20260202080355.53061-1-Ashish.Yadav@infineon.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" From: Ashish Yadav Add Infineon Digital Multi-phase XDPE1A2G5B and XDPE1A2G7B Controllers to trivial devices. Signed-off-by: Ashish Yadav --- Documentation/devicetree/bindings/trivial-devices.yaml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Docum= entation/devicetree/bindings/trivial-devices.yaml index d0f7dbf15d6f..c017af9e5e8c 100644 --- a/Documentation/devicetree/bindings/trivial-devices.yaml +++ b/Documentation/devicetree/bindings/trivial-devices.yaml @@ -149,6 +149,9 @@ properties: - infineon,xdpe15284 # Infineon Multi-phase Digital VR Controller xdpe152c4 - infineon,xdpe152c4 + # Infineon Multi-phase Digital VR Controller xdpe1a2g7b + - infineon,xdpe1a2g5b + - infineon,xdpe1a2g7b # Injoinic IP5108 2.0A Power Bank IC with I2C - injoinic,ip5108 # Injoinic IP5109 2.1A Power Bank IC with I2C --=20 2.39.5 From nobody Sun Feb 8 17:42:24 2026 Received: from mail-pf1-f176.google.com (mail-pf1-f176.google.com [209.85.210.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A86472EBDC8 for ; 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charset="utf-8" From: Ashish Yadav Add the pmbus driver for Infineon Digital Multi-phase XDPE1A2G5B and XDPE1A2G7B controllers. XDPE1A2G5B controller supports Linear Data format for VOUT using VOUT_MODE command. XDPE1A2G7B controller supports Linear and VID Data format for VOUT using=20 VOUT_MODE command. In case of vid mode in XDPE1A2G7B controller, NVIDIA PWM VID vrm_version is supported: Vout =3D 5mV * (VID-1) + 195mV Signed-off-by: Ashish Yadav --- drivers/hwmon/pmbus/Kconfig | 9 +++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/pmbus.h | 2 +- drivers/hwmon/pmbus/pmbus_core.c | 4 ++ drivers/hwmon/pmbus/xdpe1a2g7b.c | 115 +++++++++++++++++++++++++++++++ 5 files changed, 130 insertions(+), 1 deletion(-) create mode 100644 drivers/hwmon/pmbus/xdpe1a2g7b.c diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index f3fb94cebf1a..c6750bce446d 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -684,6 +684,15 @@ config SENSORS_XDPE152 This driver can also be built as a module. If so, the module will be called xdpe152c4. =20 +config SENSORS_XDPE1A2G7B + tristate "Infineon XDPE1A2G7B" + help + If you say yes here you get hardware monitoring support for Infineon + XDPE1A2G5B and XDPE1A2G7B. + + This driver can also be built as a module. If so, the module will + be called xdpe1a2g7b. + config SENSORS_XDPE122 tristate "Infineon XDPE122 family" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 349a89b6d92e..620f24baa289 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -67,6 +67,7 @@ obj-$(CONFIG_SENSORS_UCD9200) +=3D ucd9200.o obj-$(CONFIG_SENSORS_XDP710) +=3D xdp710.o obj-$(CONFIG_SENSORS_XDPE122) +=3D xdpe12284.o obj-$(CONFIG_SENSORS_XDPE152) +=3D xdpe152c4.o +obj-$(CONFIG_SENSORS_XDPE1A2G7B) +=3D xdpe1a2g7b.o obj-$(CONFIG_SENSORS_ZL6100) +=3D zl6100.o obj-$(CONFIG_SENSORS_PIM4328) +=3D pim4328.o obj-$(CONFIG_SENSORS_CRPS) +=3D crps.o diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h index d2e9bfb5320f..3ddcb742d289 100644 --- a/drivers/hwmon/pmbus/pmbus.h +++ b/drivers/hwmon/pmbus/pmbus.h @@ -416,7 +416,7 @@ enum pmbus_sensor_classes { #define PMBUS_PAGE_VIRTUAL BIT(31) /* Page is virtual */ =20 enum pmbus_data_format { linear =3D 0, ieee754, direct, vid }; -enum vrm_version { vr11 =3D 0, vr12, vr13, imvp9, amd625mv }; +enum vrm_version { vr11 =3D 0, vr12, vr13, imvp9, amd625mv, nvidia195mv }; =20 /* PMBus revision identifiers */ #define PMBUS_REV_10 0x00 /* PMBus revision 1.0 */ diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_c= ore.c index be6d05def115..4d7634ee6148 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -885,6 +885,10 @@ static s64 pmbus_reg2data_vid(struct pmbus_data *data, if (val >=3D 0x0 && val <=3D 0xd8) rv =3D DIV_ROUND_CLOSEST(155000 - val * 625, 100); break; + case nvidia195mv: + if (val >=3D 0x01) + rv =3D 195 + (val - 1) * 5; /* VID step is 5mv */ + break; } return rv; } diff --git a/drivers/hwmon/pmbus/xdpe1a2g7b.c b/drivers/hwmon/pmbus/xdpe1a2= g7b.c new file mode 100644 index 000000000000..79b12b56e7b6 --- /dev/null +++ b/drivers/hwmon/pmbus/xdpe1a2g7b.c @@ -0,0 +1,115 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for Infineon Multi-phase Digital XDPE1A2G5B + * and XDPE1A2G7B Controllers + * + * Copyright (c) 2026 Infineon Technologies. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include "pmbus.h" + +#define XDPE1A2G7B_PAGE_NUM 2 +#define XDPE1A2G7B_NVIDIA_195MV 0x1E /* NVIDIA mode 1.95mV, VID step is 5m= V */ + +static int xdpe1a2g7b_identify(struct i2c_client *client, + struct pmbus_driver_info *info) +{ + u8 vout_params; + int i, ret, vout_mode; + + vout_mode =3D pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE); + if (vout_mode >=3D 0 && vout_mode !=3D 0xff) { + switch (vout_mode >> 5) { + case 0: + info->format[PSC_VOLTAGE_OUT] =3D linear; + return 0; + case 1: + info->format[PSC_VOLTAGE_OUT] =3D vid; + break; + default: + return -ENODEV; + } + } + + for (i =3D 0; i < info->pages; i++) { + /* Read the VOUT_MODE register for VID Code Type. */ + ret =3D pmbus_read_byte_data(client, i, PMBUS_VOUT_MODE); + if (ret < 0) + return ret; + + vout_params =3D ret & GENMASK(4, 0); + switch (vout_params) { + case XDPE1A2G7B_NVIDIA_195MV: + info->vrm_version[i] =3D nvidia195mv; + break; + default: + return -EINVAL; + } + } + + return 0; +} + +static struct pmbus_driver_info xdpe1a2g7b_info =3D { + .pages =3D XDPE1A2G7B_PAGE_NUM, + .identify =3D xdpe1a2g7b_identify, + .format[PSC_VOLTAGE_IN] =3D linear, + .format[PSC_TEMPERATURE] =3D linear, + .format[PSC_CURRENT_IN] =3D linear, + .format[PSC_CURRENT_OUT] =3D linear, + .format[PSC_POWER] =3D linear, + .func[0] =3D PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT, + .func[1] =3D PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_STATUS_INPUT, +}; + +static int xdpe1a2g7b_probe(struct i2c_client *client) +{ + struct pmbus_driver_info *info; + + info =3D devm_kmemdup(&client->dev, &xdpe1a2g7b_info, sizeof(*info), + GFP_KERNEL); + if (!info) + return -ENOMEM; + + return pmbus_do_probe(client, info); +} + +static const struct i2c_device_id xdpe1a2g7b_id[] =3D { { "xdpe1a2g5b" }, + { "xdpe1a2g7b" }, + {} }; + +MODULE_DEVICE_TABLE(i2c, xdpe1a2g7b_id); + +static const struct of_device_id __maybe_unused xdpe1a2g7b_of_match[] =3D { + { .compatible =3D "infineon,xdpe1a2g5b" }, + { .compatible =3D "infineon,xdpe1a2g7b" }, + {} +}; + +MODULE_DEVICE_TABLE(of, xdpe1a2g7b_of_match); + +static struct i2c_driver xdpe1a2g7b_driver =3D { + .driver =3D { + .name =3D "xdpe1a2g7b", + .of_match_table =3D of_match_ptr(xdpe1a2g7b_of_match), + }, + .probe =3D xdpe1a2g7b_probe, + .id_table =3D xdpe1a2g7b_id, +}; + +module_i2c_driver(xdpe1a2g7b_driver); + +MODULE_AUTHOR("Ashish Yadav "); +MODULE_DESCRIPTION("PMBus driver for Infineon XDPE1A2G5B/7B"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("PMBUS"); --=20 2.39.5