linux-kernel - [PATCH v2 1/2] dt-bindings: iio: sx9324: Add CS idle/sleep mode

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Date:   Tue,  3 May 2022 12:39:36 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        devicetree@...r.kernel.org, linux-iio@...r.kernel.org,
        Gwendal Grignou <gwendal@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>
Subject: [PATCH v2 1/2] dt-bindings: iio: sx9324: Add CS idle/sleep mode

We need to configure the sleep and idle mode of the CS pins for this
device. Add a DT property to do this so pins are in a proper state
during sleep (either hi-z, grounded, or pulled up to vdd).

Reviewed-by: Gwendal Grignou <gwendal@...omium.org>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 .../bindings/iio/proximity/semtech,sx9324.yaml           | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
index d265eb5258c8..b3aa2ebf9661 100644
--- a/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
+++ b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
@@ -126,6 +126,14 @@ properties:
       UINT_MAX (4294967295) represents infinite. Other values
       represent 1-1/N.
 
+  semtech,cs-idle-sleep:
+    description:
+      State of CS pins during sleep mode and idle time.
+    enum:
+      - hi-z
+      - gnd
+      - vdd
+
   semtech,int-comp-resistor:
     description:
       Internal resistor setting for compensation.
@@ -187,5 +195,6 @@ examples:
         semtech,avg-pos-strength = <64>;
         semtech,int-comp-resistor = "lowest";
         semtech,input-precharge-resistor-ohms = <2000>;
+        semtech,cs-idle-sleep = "gnd";
       };
     };
-- 
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