linux-kernel - [PATCH 1/2] dt-bindings: iio: adc: ti,adc128s052: Add adc08c and adc10c family

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Date:   Thu, 30 Jun 2022 23:29:18 -0500
From:   Nishanth Menon <nm@...com>
To:     Angelo Compagnucci <angelo.compagnucci@...il.com>,
        Nuno Sá <nuno.sa@...log.com>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Alexandru Ardelean <ardeleanalex@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Jonathan Cameron <jic23@...nel.org>
CC:     Nishanth Menon <nm@...com>, Florian Eckert <fe@....tdt.de>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-iio@...r.kernel.org>
Subject: [PATCH 1/2] dt-bindings: iio: adc: ti,adc128s052: Add adc08c and adc10c family

The adcxx4s communicates with a host processor via an SPI/Microwire Bus
interface. The device family responds with 12bit data, of which the LSB
bits are 0 for the lower resolution devices. I have been able to test
adc102s051, hence adding just the missing ones in that family.

Lets reuse the binding to support the family of devices with name
ADC<bb><c>S<sss>, where
* bb is the resolution in number of bits (8, 10, 12)
* c is the number of channels (1, 2, 4, 8)
* sss is the maximum conversion speed (021 for 200 kSPS, 051 for 500 kSPS
  and 101 for 1 MSPS)

Complete datasheets are available at TI's website here:
  https://www.ti.com/lit/gpn/adc<bb><c>s<sss>.pdf

Handling of 8, 10 and 12 bits converters are the same, the
unavailable bits are 0 in LSB :)

Inspired-by: drivers/hwmon/adcxx.c

Signed-off-by: Nishanth Menon <nm@...com>
---

Checkpatch does complain with Inspired-by: insisting it to be an email
address.. but I was really inspired by the hwmon driver.. Don't know
what else to say here.. we could probably drop it?

 .../devicetree/bindings/iio/adc/ti,adc128s052.yaml          | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml
index d54a0183f024..85adf53c83c1 100644
--- a/Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml
@@ -16,6 +16,12 @@ description: |
 properties:
   compatible:
     enum:
+      - ti,adc082s021
+      - ti,adc082s051
+      - ti,adc082s101
+      - ti,adc102s021
+      - ti,adc102s051
+      - ti,adc102s101
       - ti,adc122s021
       - ti,adc122s051
       - ti,adc122s101
-- 
2.31.1