út 13. 4. 2021 v 7:36 odesílatel Guenter Roeck <linux@xxxxxxxxxxxx> napsal: > > On 4/12/21 9:31 PM, Václav Kubernát wrote: > [ ... ] > > Okay, I have made some additional testing. Some of the registers > > return 0xFFFF, some don't. These are the ones that pmbus_core queries > > when the driver is loading (with values I got from > > i2c_smbus_read_word_data): > > PMBUS_POUT_MAX 0xFFFF > > PMBUS_FAN_COMMAND_1 0x0 > > PMBUS_VOUT_OV_FAULT_LIMIT 0xFFFF > > PMBUS_VOUT_OV_WARN_LIMIT 0xFFFF > > PMBUS_VOUT_UV_WARN_LIMIT 0xFFFF > > PMBUS_VOUT_UV_FAULT_LIMIT 0xFFFF > > PMBUS_IOUT_OC_FAULT_LIMIT 0xFFFF > > PMBUS_IOUT_OC_WARN_LIMIT 0x10 > > PMBUS_IOUT_UC_FAULT_LIMIT 0xFFFF > > PMBUS_OT_FAULT_LIMIT 0xFFFF > > PMBUS_OT_WARN_LIMIT 0xFFFFFFB6 > > PMBUS_UT_WARN_LIMIT 0xFFFF > > PMBUS_UT_FAULT_LIMIT 0xFFFF > > PMBUS_VIN_OV_FAULT_LIMIT 0xFFFF > > PMBUS_VIN_OV_WARN_LIMIT 0xFFFF > > PMBUS_VIN_UV_WARN_LIMIT 0xFFFF > > PMBUS_VIN_UV_FAULT_LIMIT 0xFFFF > > PMBUS_IIN_OC_FAULT_LIMIT 0xFFFF > > PMBUS_IIN_OC_WARN_LIMIT 0x0 > > PMBUS_POUT_OP_FAULT_LIMIT 0xFFFF > > PMBUS_POUT_OP_WARN_LIMIT 0xFFFFFFB6 > > PMBUS_PIN_OP_WARN_LIMIT 0x0 > > PMBUS_READ_FAN_SPEED_2 0x0 > > PMBUS_MFR_VIN_MIN 0x5A > > PMBUS_MFR_VIN_MAX 0x108 > > PMBUS_MFR_IIN_MAX 0x3 > > PMBUS_MFR_PIN_MAX 0xC8 > > PMBUS_MFR_VOUT_MIN 0x1748 > > PMBUS_MFR_VOUT_MAX 0x18B0 > > PMBUS_MFR_IOUT_MAX 0xF > > PMBUS_MFR_POUT_MAX 0x96 > > PMBUS_MFR_MAX_TEMP_1 0xFFFF > > PMBUS_MFR_MAX_TEMP_2 0xFFFF > > > > The question is really what the status register reports for those. > I bet that PMBUS_STATUS_CML will set the "invalid command" bit > for many if not all registers returning 0xffff. Those will > be filtered out by the PMBus core automatically. That leaves the > ones returning some data. Of course it would be desirable > to have those supported, but I can understand if you don't know > the encoding. The reason for masking those needs to be explained. > I thought I sent the v4 patch before, but it seems that I only sent it to myself. Also, I realized I've sent some of the emails only to you. That wasn't my intention. Sorry. I'm bad at emailing. Anyway, I have posted the v4 patch right now and it includes a comment about the masking. Václav > Thanks, > Guenter
