linux-kernel - [PATCH] dt-bindings: hwmon: add TI DC-DC converters

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Message-Id: <20211116110207.68494-1-krzysztof.kozlowski@canonical.com>
Date:   Tue, 16 Nov 2021 12:02:07 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Guenter Roeck <linux@...ck-us.net>,
        Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        devicetree@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Vincent Pelletier <plr.vincent@...il.com>
Subject: [PATCH] dt-bindings: hwmon: add TI DC-DC converters

Few Texas Instruments DC-DC converters on PMBus like TPS544B20 do not
have bindings and are used only as hardware monitoring sensor.  These
devices are actually not trivial and can receive basic configuration
(e.g. power up mode, CNTL pin polarity, expected input voltage), however
devicetree support for configuration was never added.

Therefore in current state the devices are used only in read-only mode
and have trivial bindings, so document them to have basic dtschema
tests.

Cc: Vincent Pelletier <plr.vincent@...il.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
---
 Documentation/devicetree/bindings/trivial-devices.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index 791079021f1b..3297a6480534 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -329,12 +329,19 @@ properties:
           - ti,tmp122
             # Digital Temperature Sensor
           - ti,tmp275
+            # TI DC-DC converter on PMBus
+          - ti,tps40400
             # TI Dual channel DCAP+ multiphase controller TPS53676 with AVSBus
           - ti,tps53676
             # TI Dual channel DCAP+ multiphase controller TPS53679
           - ti,tps53679
             # TI Dual channel DCAP+ multiphase controller TPS53688
           - ti,tps53688
+            # TI DC-DC converters on PMBus
+          - ti,tps544b20
+          - ti,tps544b25
+          - ti,tps544c20
+          - ti,tps544c25
             # Winbond/Nuvoton H/W Monitor
           - winbond,w83793
             # i2c trusted platform module (TPM)
-- 
2.32.0