linux-kernel - [PATCH 0/2] hwmon: (pmbus) Add a NO_PEC flag to probe chips with faulty CAPABILITY

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Message-Id: <20201221163058.33257-1-eajames@linux.ibm.com>
Date:   Mon, 21 Dec 2020 10:30:56 -0600
From:   Eddie James <eajames@...ux.ibm.com>
To:     linux-hwmon@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, jdelvare@...e.com,
        linux@...ck-us.net, eajames@...ux.ibm.com, bjwyman@...il.com
Subject: [PATCH 0/2] hwmon: (pmbus) Add a NO_PEC flag to probe chips with faulty CAPABILITY

Some PMBus chips don't respond with valid data when reading the
CAPABILITY register. For instance the register may report that the
chip supports PEC when in reality it does not. For such chips, PEC
must not be enabled while probing the chip, so this series adds a flag
that allows device drivers to force PEC off. The second patch enables
this flag for the IBM CFFPS driver, which supports power supplies that
report invalid in the CAPABILITY register and must therefore force PEC
off.

Eddie James (2):
  hwmon: (pmbus) Add a NO_PEC flag to probe chips with faulty CAPABILITY
  hwmon: (pmbus/ibm-cffps) Set the PMBUS_NO_PEC flag

 drivers/hwmon/pmbus/ibm-cffps.c  |  2 +-
 drivers/hwmon/pmbus/pmbus_core.c |  8 +++++---
 include/linux/pmbus.h            | 10 ++++++++++
 3 files changed, 16 insertions(+), 4 deletions(-)

-- 
2.27.0