linux-kernel - [PATCH 1/2] dt-bindings: pwm: add bindings for PWM modules inside QCOM PMICs

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Message-Id: <20210427102247.822-2-fenglinw@codeaurora.org>
Date:   Tue, 27 Apr 2021 18:22:09 +0800
From:   Fenglin Wu <fenglinw@...eaurora.org>
To:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Lee Jones <lee.jones@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Fenglin Wu <fenglinw@...eaurora.org>,
        linux-pwm@...r.kernel.org, devicetree@...r.kernel.org
Cc:     subbaram@...eaurora.org, collinsd@...eaurora.org,
        aghayal@...eaurora.org
Subject: [PATCH 1/2] dt-bindings: pwm: add bindings for PWM modules inside QCOM PMICs

Add bindings for QCOM PMIC PWM modules which are accessed through SPMI
bus.

Signed-off-by: Fenglin Wu <fenglinw@...eaurora.org>
---
 .../devicetree/bindings/pwm/pwm-qcom.yaml          | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-qcom.yaml

diff --git a/Documentation/devicetree/bindings/pwm/pwm-qcom.yaml b/Documentation/devicetree/bindings/pwm/pwm-qcom.yaml
new file mode 100644
index 0000000..e8d8ed6
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-qcom.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-qcom.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. PMIC PWM bindings
+
+maintainers:
+  - Fenglin Wu <fenglinw@...eaurora.org>
+
+description:
+  PWM modules inside Qualcomm Technologies, Inc. PMICs can be accessed through
+  SPMI bus and normally one PMIC would have multiple PWM modules with adjacent
+  SPMI address space.
+
+Properties:
+  compatible:
+    const: qcom,pwm
+
+  reg:
+    description:
+      The SPMI address base of the PWM module, if there are multiple PWM
+      modules present with adjacent SPMI address space, only need to specify
+      the address base of the 1st PWM module.
+
+  "#pwm-cells":
+     # See pwm.yaml in this directory for a description of the cells format.
+     const: 2
+
+  qcom,num-channels:
+    description:
+      The number of the PWM channels (modules) with the adjacent SPMI address
+      space following the address base in "reg" property.
+
+required:
+  - compatible
+  - reg
+  - "#pwm-cells"
+  - qcom,num-channels
+
+additionalProperties: false
+
+examples:
+  - |
+    pm8350c_pwm: pwms@...0 {
+        compatible = "qcom,pwm";
+        reg = <0xe800>;
+        #pwm-cells = <2>;
+        qcom,num-channels = <4>;
+    };
-- 
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.