hwmon: (ltc2978) Add support for LTM4675
LTM2975 is a dual 9A or single 18A μModule regulator. It is register compatible with LTM4676. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck
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e04d1ce9bb
commit
ccf2dc51bc
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@ -47,6 +47,10 @@ Supported chips:
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Prefix: 'ltm2987'
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Addresses scanned: -
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Datasheet: http://www.linear.com/product/ltm2987
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* Linear Technology LTM4675
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Prefix: 'ltm4675'
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Addresses scanned: -
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Datasheet: http://www.linear.com/product/ltm4675
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* Linear Technology LTM4676
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Prefix: 'ltm4676'
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Addresses scanned: -
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@ -70,6 +74,7 @@ LTC3883 is a single phase step-down DC/DC controller.
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LTM2987 is a 16-channel Power System Manager with two LTC2977 plus
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additional components on a single die. The chip is instantiated and reported
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as two separate chips on two different I2C bus addresses.
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LTM4675 is a dual 9A or single 18A μModule regulator
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LTM4676 is a dual 13A or single 26A uModule regulator.
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@ -117,7 +122,8 @@ in[N]_label "vout[1-8]".
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LTC2974, LTC2975: N=2-5
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LTC2977, LTC2980, LTM2987: N=2-9
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LTC2978: N=2-9
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LTC3880, LTC3882, LTC23886 LTC3887, LTM4676: N=2-3
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LTC3880, LTC3882, LTC23886 LTC3887, LTM4675, LTM4676:
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N=2-3
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LTC3883: N=2
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in[N]_input Measured output voltage.
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in[N]_min Minimum output voltage.
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@ -139,9 +145,9 @@ temp[N]_input Measured temperature.
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On LTC2977, LTC2980, LTC2978, and LTM2987, only one
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temperature measurement is supported and reports
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the chip temperature.
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On LTC3880, LTC3882, LTC3887, and LTM4676, temp1 and
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temp2 report external temperatures, and temp3 reports
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the chip temperature.
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On LTC3880, LTC3882, LTC3887, LTM4675, and LTM4676,
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temp1 and temp2 report external temperatures, and temp3
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reports the chip temperature.
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On LTC3883, temp1 reports an external temperature,
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and temp2 reports the chip temperature.
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temp[N]_min Mimimum temperature. LTC2974, LCT2977, LTM2980, LTC2978,
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@ -172,12 +178,13 @@ power[N]_label "pout[1-4]".
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LTC2974, LTC2975: N=1-4
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LTC2977, LTC2980, LTM2987: Not supported
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LTC2978: Not supported
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LTC3880, LTC3882, LTC3886, LTC3887, LTM4676: N=1-2
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LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676:
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N=1-2
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LTC3883: N=2
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power[N]_input Measured output power.
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curr1_label "iin". LTC3880, LTC3883, LTC3886, LTC3887, and LTM4676
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only.
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curr1_label "iin". LTC3880, LTC3883, LTC3886, LTC3887, LTM4675,
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and LTM4676 only.
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curr1_input Measured input current.
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curr1_max Maximum input current.
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curr1_max_alarm Input current high alarm.
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@ -188,7 +195,8 @@ curr[N]_label "iout[1-4]".
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LTC2974, LTC2975: N=1-4
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LTC2977, LTC2980, LTM2987: not supported
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LTC2978: not supported
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LTC3880, LTC3882, LTC3886, LTC3887, LTM4676: N=2-3
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LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676:
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N=2-3
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LTC3883: N=2
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curr[N]_input Measured output current.
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curr[N]_max Maximum output current.
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@ -53,7 +53,7 @@ config SENSORS_LTC2978
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help
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If you say yes here you get hardware monitoring support for Linear
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Technology LTC2974, LTC2975, LTC2977, LTC2978, LTC2980, LTC3880,
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LTC3883, LTC3886, LTC3887, LTCM2987, and LTM4676.
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LTC3883, LTC3886, LTC3887, LTCM2987, LTM4675, and LTM4676.
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This driver can also be built as a module. If so, the module will
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be called ltc2978.
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@ -28,7 +28,7 @@
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#include "pmbus.h"
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enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
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ltc3883, ltc3886, ltc3887, ltm2987, ltm4676 };
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ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676 };
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/* Common for all chips */
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#define LTC2978_MFR_VOUT_PEAK 0xdd
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@ -46,7 +46,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
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#define LTC2974_MFR_IOUT_PEAK 0xd7
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#define LTC2974_MFR_IOUT_MIN 0xd8
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/* LTC3880, LTC3882, LTC3883, LTC3887, and LTM4676 */
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/* LTC3880, LTC3882, LTC3883, LTC3887, LTM4675, and LTM4676 */
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#define LTC3880_MFR_IOUT_PEAK 0xd7
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#define LTC3880_MFR_CLEAR_PEAKS 0xe3
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#define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4
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@ -77,6 +77,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
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#define LTC3887_ID 0x4700
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#define LTM2987_ID_A 0x8010 /* A/B for two die IDs */
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#define LTM2987_ID_B 0x8020
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#define LTM4675_ID 0x47a0
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#define LTM4676_ID_REV1 0x4400
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#define LTM4676_ID_REV2 0x4480
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#define LTM4676A_ID 0x47e0
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@ -509,6 +510,7 @@ static const struct i2c_device_id ltc2978_id[] = {
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{"ltc3886", ltc3886},
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{"ltc3887", ltc3887},
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{"ltm2987", ltm2987},
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{"ltm4675", ltm4675},
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{"ltm4676", ltm4676},
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{}
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};
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@ -581,6 +583,8 @@ static int ltc2978_get_id(struct i2c_client *client)
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return ltc3887;
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else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B)
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return ltm2987;
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else if (chip_id == LTM4675_ID)
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return ltm4675;
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else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 ||
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chip_id == LTM4676A_ID)
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return ltm4676;
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@ -678,6 +682,7 @@ static int ltc2978_probe(struct i2c_client *client,
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break;
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case ltc3880:
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case ltc3887:
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case ltm4675:
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case ltm4676:
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data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
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info->read_word_data = ltc3880_read_word_data;
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@ -763,6 +768,7 @@ static const struct of_device_id ltc2978_of_match[] = {
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{ .compatible = "lltc,ltc3886" },
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{ .compatible = "lltc,ltc3887" },
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{ .compatible = "lltc,ltm2987" },
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{ .compatible = "lltc,ltm4675" },
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{ .compatible = "lltc,ltm4676" },
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{ }
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};
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