From:   Caleb Connolly <caleb.connolly@linaro.org>
To:     caleb.connolly@linaro.org, Jonathan Cameron <jic23@kernel.org>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Rob Herring <robh+dt@kernel.org>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Lee Jones <lee.jones@linaro.org>, linux-iio@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-msm@vger.kernel.org
Cc:     sumit.semwal@linaro.org, amit.pundir@linaro.org,
        john.stultz@linaro.org, Rob Herring <robh@kernel.org>
Subject: [PATCH v3 2/7] dt-bindings: iio: adc: document qcom-spmi-rradc
Date:   Thu,  6 Jan 2022 17:31:26 +0000
Message-Id: <20220106173131.3279580-3-caleb.connolly@linaro.org>
In-Reply-To: <20220106173131.3279580-1-caleb.connolly@linaro.org>
References: <20220106173131.3279580-1-caleb.connolly@linaro.org>
MIME-Version: 1.0
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Precedence: bulk

Add dt-binding docs for the Qualcomm SPMI RRADC found in PMICs like
PMI8998 and PMI8994

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../bindings/iio/adc/qcom,spmi-rradc.yaml     | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/qcom,spmi-rradc.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/qcom,spmi-rradc.yaml b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-rradc.yaml
new file mode 100644
index 000000000000..11d47c46a48d
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-rradc.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/qcom,spmi-rradc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm's SPMI PMIC Round Robin ADC
+
+maintainers:
+  - Caleb Connolly <caleb.connolly@linaro.org>
+
+description: |
+  The Qualcomm SPMI Round Robin ADC (RRADC) provides interface to clients to read the
+  voltage, current and temperature for supported peripherals such as the battery thermistor
+  die temperature, charger temperature, USB and DC input voltage / current and battery ID
+  resistor.
+
+properties:
+  compatible:
+    enum:
+      - qcom,pmi8998-rradc
+      - qcom,pm660-rradc
+
+  reg:
+    description: rradc base address and length in the SPMI PMIC register map
+    maxItems: 1
+
+  qcom,batt-id-delay-ms:
+    description:
+      Sets the hardware settling time for the battery ID resistor.
+    enum: [0, 1, 4, 12, 20, 40, 60, 80]
+
+  "#io-channel-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    pmic {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      pmic_rradc: adc@4500 {
+          compatible = "qcom,pmi8998-rradc";
+          reg = <0x4500>;
+          #io-channel-cells  = <1>;
+      };
+    };
+...
-- 
2.34.1