linux-kernel - [PATCH v2] dt-bindings: hwmon: adm1272: add analog-temperature1-enable binding

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Message-Id: <20200720201422.1869389-1-linchuyuan@google.com>
Date:   Mon, 20 Jul 2020 20:14:22 +0000
From:   Chu Lin <linchuyuan@...gle.com>
To:     linux@...ck-us.net, robh+dt@...nel.org, jdelvare@...e.com
Cc:     =belgaied@...gle.com, jasonling@...gle.com, linchuyuan@...gle.com,
        linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org,
        zhongqil@...gle.com
Subject: [PATCH v2] dt-bindings: hwmon: adm1272: add analog-temperature1-enable
 binding

Problem:
	adm1272 and adm1278 supports temperature sampling. The
current way of enabling it requires the user manually unbind the device
from the driver, flip the temperature sampling control bit and then bind
the device back to the driver. It would be nice if we can control this in a
better way by reading the dt.

Solution:
	Introducing device tree binding analog-temperature1-enable. If the
flag is set, flip the temp1_en control bit on probing.

Testing:
make dt_binding_check

Signed-off-by: Chu Lin <linchuyuan@...gle.com>
---
ChangeLog v1->v2:
  - Rename adm1272-adm1278-temp1-en to analog-temperature1-enable

 Documentation/devicetree/bindings/hwmon/adm1275.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/hwmon/adm1275.txt b/Documentation/devicetree/bindings/hwmon/adm1275.txt
index 1ecd03f3da4d..7a345c7794a2 100644
--- a/Documentation/devicetree/bindings/hwmon/adm1275.txt
+++ b/Documentation/devicetree/bindings/hwmon/adm1275.txt
@@ -15,6 +15,8 @@ Optional properties:
 
 - shunt-resistor-micro-ohms
 	Shunt resistor value in micro-Ohm
+- analog-temperature1-enable
+	Enable temperature sampling. This is supported on adm1272 and adm1278
 
 Example:
 
@@ -22,4 +24,5 @@ adm1272@10 {
 	compatible = "adi,adm1272";
 	reg = <0x10>;
 	shunt-resistor-micro-ohms = <500>;
+	analog-temperature1-enable;
 };
-- 
2.28.0.rc0.105.gf9edc3c819-goog