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hwmon: (pmbus/max34440): add support for newer version of max34451

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The MAX34451 released a newer version called max34451etna8+.
This simply changes the direct format coefficients

Signed-off-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
Link: https://lore.kernel.org/r/20260722-max34451_fixes-v2-2-bbddb18ec1d6@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Alexis Czezar Torreno 2026-07-22 09:29:30 +08:00 committed by Guenter Roeck
parent 6db3ba30de
commit 596f410c05
1 changed files with 17 additions and 4 deletions
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21
drivers/hwmon/pmbus/max34440.c
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@ -59,6 +59,7 @@ enum chips {
#define MAX34440_IOUT_OC_FAULT_LIMIT 0x4A
#define MAX34451ETNA6_MFR_REV 0x0012
#define MAX34451ETNA8_MFR_REV 0x0014
#define MAX34451_MFR_CHANNEL_CONFIG 0xe4
#define MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK 0x3f
@ -343,12 +344,24 @@ static int max34451_set_supported_funcs(struct i2c_client *client,
max34451_na6 = true;
data->info.format[PSC_VOLTAGE_IN] = direct;
data->info.format[PSC_CURRENT_IN] = direct;
data->info.m[PSC_VOLTAGE_IN] = 1;
data->info.b[PSC_VOLTAGE_IN] = 0;
data->info.R[PSC_VOLTAGE_IN] = 3;
data->info.m[PSC_CURRENT_IN] = 1;
data->info.b[PSC_CURRENT_IN] = 0;
data->info.R[PSC_CURRENT_IN] = 2;
if (rv >= MAX34451ETNA8_MFR_REV) {
data->info.m[PSC_VOLTAGE_IN] = 125;
data->info.R[PSC_VOLTAGE_IN] = 0;
data->info.m[PSC_VOLTAGE_OUT] = 125;
data->info.R[PSC_VOLTAGE_OUT] = 0;
data->info.m[PSC_CURRENT_IN] = 250;
data->info.R[PSC_CURRENT_IN] = -1;
data->info.m[PSC_CURRENT_OUT] = 250;
data->info.R[PSC_CURRENT_OUT] = -1;
} else {
data->info.m[PSC_VOLTAGE_IN] = 1;
data->info.R[PSC_VOLTAGE_IN] = 3;
data->info.m[PSC_CURRENT_IN] = 1;
data->info.R[PSC_CURRENT_IN] = 2;
}
data->iout_oc_fault_limit = PMBUS_IOUT_OC_FAULT_LIMIT;
data->iout_oc_warn_limit = PMBUS_IOUT_OC_WARN_LIMIT;
}