From: Michael Hennerich <michael.hennerich@xxxxxxxxxx> This patch adds support for LTM4686 Ultrathin Dual 10A or Single 20A uModule Regulator with Digital Power System Management. Datasheet: http://www.analog.com/ltm4686 Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx> --- Documentation/devicetree/bindings/hwmon/ltc2978.txt | 2 ++ Documentation/hwmon/ltc2978 | 5 +++++ drivers/hwmon/pmbus/Kconfig | 3 ++- drivers/hwmon/pmbus/ltc2978.c | 9 ++++++++- 4 files changed, 17 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/hwmon/ltc2978.txt b/Documentation/devicetree/bindings/hwmon/ltc2978.txt index bf2a47b..b428a70 100644 --- a/Documentation/devicetree/bindings/hwmon/ltc2978.txt +++ b/Documentation/devicetree/bindings/hwmon/ltc2978.txt @@ -15,6 +15,7 @@ Required properties: * "lltc,ltm2987" * "lltc,ltm4675" * "lltc,ltm4676" + * "lltc,ltm4686" - reg: I2C slave address Optional properties: @@ -30,6 +31,7 @@ Valid names of regulators depend on number of supplies supported per device: * ltc3880, ltc3882, ltc3886 : vout0 - vout1 * ltc3883 : vout0 * ltm4676 : vout0 - vout1 + * ltm4686 : vout0 - vout1 Example: ltc2978@5e { diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978 index 9a49d3c..dfb2caa 100644 --- a/Documentation/hwmon/ltc2978 +++ b/Documentation/hwmon/ltc2978 @@ -55,6 +55,10 @@ Supported chips: Prefix: 'ltm4676' Addresses scanned: - Datasheet: http://www.linear.com/product/ltm4676 + * Analog Devices LTM4686 + Prefix: 'ltm4686' + Addresses scanned: - + Datasheet: http://www.analog.com/ltm4686 Author: Guenter Roeck <linux@xxxxxxxxxxxx> @@ -76,6 +80,7 @@ additional components on a single die. The chip is instantiated and reported as two separate chips on two different I2C bus addresses. LTM4675 is a dual 9A or single 18A μModule regulator LTM4676 is a dual 13A or single 26A uModule regulator. +LTM4686 is a dual 10A or single 20A uModule regulator. Usage Notes diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index e71aec6..28279a8 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -83,7 +83,8 @@ config SENSORS_LTC2978_REGULATOR depends on SENSORS_LTC2978 && REGULATOR help If you say yes here you get regulator support for Linear - Technology LTC2974, LTC2977, LTC2978, LTC3880, LTC3883, and LTM4676. + Technology LTC2974, LTC2977, LTC2978, LTC3880, LTC3883, LTM4676 + and LTM4686. config SENSORS_LTC3815 tristate "Linear Technologies LTC3815" diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index 58b789c..07afb92 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -4,6 +4,7 @@ * Copyright (c) 2011 Ericsson AB. * Copyright (c) 2013, 2014, 2015 Guenter Roeck * Copyright (c) 2015 Linear Technology + * Copyright (c) 2018 Analog Devices Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -28,7 +29,7 @@ #include "pmbus.h" enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882, - ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676 }; + ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676, ltm4686 }; /* Common for all chips */ #define LTC2978_MFR_VOUT_PEAK 0xdd @@ -81,6 +82,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882, #define LTM4676_ID_REV1 0x4400 #define LTM4676_ID_REV2 0x4480 #define LTM4676A_ID 0x47e0 +#define LTM4686_ID 0x4770 #define LTC2974_NUM_PAGES 4 #define LTC2978_NUM_PAGES 8 @@ -512,6 +514,7 @@ static const struct i2c_device_id ltc2978_id[] = { {"ltm2987", ltm2987}, {"ltm4675", ltm4675}, {"ltm4676", ltm4676}, + {"ltm4686", ltm4686}, {} }; MODULE_DEVICE_TABLE(i2c, ltc2978_id); @@ -588,6 +591,8 @@ static int ltc2978_get_id(struct i2c_client *client) else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 || chip_id == LTM4676A_ID) return ltm4676; + else if (chip_id == LTM4686_ID) + return ltm4686; dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id); return -ENODEV; @@ -684,6 +689,7 @@ static int ltc2978_probe(struct i2c_client *client, case ltc3887: case ltm4675: case ltm4676: + case ltm4686: data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING; info->read_word_data = ltc3880_read_word_data; info->pages = LTC3880_NUM_PAGES; @@ -770,6 +776,7 @@ static const struct of_device_id ltc2978_of_match[] = { { .compatible = "lltc,ltm2987" }, { .compatible = "lltc,ltm4675" }, { .compatible = "lltc,ltm4676" }, + { .compatible = "lltc,ltm4686" }, { } }; MODULE_DEVICE_TABLE(of, ltc2978_of_match); -- 2.7.4
