From: "Pradhan, Sanman" <sanman.pradhan@hpe.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Jonathan Corbet <corbet@lwn.net>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
"linux-hwmon@vger.kernel.org" <linux-hwmon@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>,
Sanman Pradhan <psanman@juniper.net>
Subject: [PATCH v2 0/2] hwmon: (pmbus/tps53679) Select page 0 for single-page parts
Date: Wed, 16 Sep 2026 23:54:12 +0000 [thread overview]
Message-ID: <20260916235406.681131-1-sanman.pradhan@hpe.com> (raw)
From: Sanman Pradhan <psanman@juniper.net>
For single-page TPS53676 and TPS536C7 configurations the PAGE register is
never normalised: pmbus_set_page() only writes PAGE when info->pages > 1,
so a page left selected by the boot firmware persists and telemetry is
read from the wrong page. Select page 0 explicitly in the two identify
routines.
Patch 1 fixes the pre-existing TPS53676 issue and carries Fixes/stable
tags. Patch 2 fixes the newly added TPS536C7 support; the TPS536C7 series
has already been applied by the hwmon maintainer but is not yet in a
released kernel, so patch 2 carries no stable tag.
These patches are based on top of the previously submitted TPS536C7
series.
Changes in v2:
- Drop the PAGE read-back/verify; just write PAGE = 0.
Sanman Pradhan (2):
hwmon: (pmbus/tps53679) Select page 0 for single-page TPS53676
hwmon: (pmbus/tps53679) Select page 0 for single-page TPS536C7
drivers/hwmon/pmbus/tps53679.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
--
2.34.1
next reply other threads:[~2026-09-16 23:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-16 23:54 Pradhan, Sanman [this message]
2026-09-16 23:54 ` [PATCH v2 1/2] hwmon: (pmbus/tps53679) Select page 0 for single-page TPS53676 Pradhan, Sanman
2026-09-17 0:05 ` Guenter Roeck
2026-09-16 23:54 ` [PATCH v2 2/2] hwmon: (pmbus/tps53679) Select page 0 for single-page TPS536C7 Pradhan, Sanman
2026-09-17 0:06 ` Guenter Roeck
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