linux-kernel - [PATCH v3 8/9] dt-bindings: i2c: qcom,i2c-qup: convert to dtschema

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Date:   Sat,  2 Apr 2022 20:40:10 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Brown <broonie@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-spi@...r.kernel.org
Cc:     Kuldeep Singh <singh.kuldeep87k@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v3 8/9] dt-bindings: i2c: qcom,i2c-qup: convert to dtschema

Convert the Qualcomm Universal Peripheral (QUP) I2C controller to DT
Schema.

Add missing properties: dma and dma-names, pinctrl states (to indicate
support for sleep pinctrl).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../devicetree/bindings/i2c/qcom,i2c-qup.txt  | 40 ---------
 .../devicetree/bindings/i2c/qcom,i2c-qup.yaml | 89 +++++++++++++++++++
 2 files changed, 89 insertions(+), 40 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt
 create mode 100644 Documentation/devicetree/bindings/i2c/qcom,i2c-qup.yaml

diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt
deleted file mode 100644
index dc71754a56af..000000000000
--- a/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt
+++ /dev/null
@@ -1,40 +0,0 @@
-Qualcomm Universal Peripheral (QUP) I2C controller
-
-Required properties:
- - compatible: Should be:
-   * "qcom,i2c-qup-v1.1.1" for 8660, 8960 and 8064.
-   * "qcom,i2c-qup-v2.1.1" for 8974 v1.
-   * "qcom,i2c-qup-v2.2.1" for 8974 v2 and later.
- - reg: Should contain QUP register address and length.
- - interrupts: Should contain I2C interrupt.
-
- - clocks: A list of phandles + clock-specifiers, one for each entry in
-   clock-names.
- - clock-names: Should contain:
-   * "core" for the core clock
-   * "iface" for the AHB clock
-
- - #address-cells: Should be <1> Address cells for i2c device address
- - #size-cells: Should be <0> as i2c addresses have no size component
-
-Optional properties:
- - clock-frequency: Should specify the desired i2c bus clock frequency in Hz,
-                    defaults to 100kHz if omitted.
-
-Child nodes should conform to i2c bus binding.
-
-Example:
-
- i2c@...24000 {
- 	compatible = "qcom,i2c-qup-v2.2.1";
- 	reg = <0xf9924000 0x1000>;
- 	interrupts = <0 96 0>;
-
- 	clocks = <&gcc GCC_BLSP1_QUP2_I2C_APPS_CLK>, <&gcc GCC_BLSP1_AHB_CLK>;
- 	clock-names = "core", "iface";
-
- 	clock-frequency = <355000>;
-
- 	#address-cells = <1>;
- 	#size-cells = <0>;
- };
diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.yaml b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.yaml
new file mode 100644
index 000000000000..f43947514d48
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.yaml
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/qcom,i2c-qup.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Universal Peripheral (QUP) I2C controller
+
+maintainers:
+  - Andy Gross <agross@...nel.org>
+  - Bjorn Andersson <bjorn.andersson@...aro.org>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,i2c-qup-v1.1.1     # for 8660, 8960 and 8064
+      - qcom,i2c-qup-v2.1.1     # for 8974 v1
+      - qcom,i2c-qup-v2.2.1     # for 8974 v2 and later
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: core
+      - const: iface
+
+  clock-frequency:
+    default: 100000
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+  interrupts:
+    maxItems: 1
+
+  pinctrl-0: true
+  pinctrl-1: true
+
+  pinctrl-names:
+    minItems: 1
+    items:
+      - const: default
+      - const: sleep
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - clock-names
+  - clocks
+  - interrupts
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-msm8998.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    i2c@...5000 {
+        compatible = "qcom,i2c-qup-v2.2.1";
+        reg = <0x0c175000 0x600>;
+        interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+
+        clocks = <&gcc GCC_BLSP1_QUP1_I2C_APPS_CLK>,
+                 <&gcc GCC_BLSP1_AHB_CLK>;
+        clock-names = "core", "iface";
+        dmas = <&blsp1_dma 6>, <&blsp1_dma 7>;
+        dma-names = "tx", "rx";
+        pinctrl-names = "default", "sleep";
+        pinctrl-0 = <&blsp1_i2c1_default>;
+        pinctrl-1 = <&blsp1_i2c1_sleep>;
+        clock-frequency = <400000>;
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+    };
-- 
2.32.0