[PATCH v4 1/4] dt-bindings: i2c: imx-lpi2c: Add properties and use unevaluatedProperties

[Krzysztof Kozlowski]

Additional properties actually might appear (e.g. power-domains) so
describe all typical properties, reference generic i2c schema and use
unevaluatedProperties to fix dtbs_check warnings like:

  arch/arm64/boot/dts/freescale/imx8qxp-ai_ml.dt.yaml: i2c at 5a800000:
    'assigned-clock-rates', 'assigned-clocks', 'clock-names', 'power-domains' do not match any of the regexes: 'pinctrl-[0-9]+'

  arch/arm64/boot/dts/freescale/imx8qxp-colibri-eval-v3.dt.yaml: i2c at 5a800000:
    'touchscreen at 2c' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>

---

Changes since v3:
1. Drop address/size cells
2. Set maxItems to power domains to 1

Changes since v2:
1. Add assigned-clock-parents

Changes since v1:
1. Add more properties and include /schemas/i2c/i2c-controller.yaml#
---
 .../devicetree/bindings/i2c/i2c-imx-lpi2c.yaml | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml
index ac0bc5dd64d6..bf68489eecd1 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml
@@ -9,6 +9,9 @@ title: Freescale Low Power Inter IC (LPI2C) for i.MX
 maintainers:
   - Anson Huang <Anson.Huang at nxp.com>
 
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
 properties:
   compatible:
     enum:
@@ -22,23 +25,34 @@ properties:
   interrupts:
     maxItems: 1
 
+  assigned-clock-parents: true
+  assigned-clock-rates: true
+  assigned-clocks: true
+  clock-frequency: true
+
+  clock-names:
+    maxItems: 1
+
   clocks:
     maxItems: 1
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
   - interrupts
   - clocks
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |
     #include <dt-bindings/clock/imx7ulp-clock.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 
-    lpi2c7 at 40a50000 {
+    i2c at 40a50000 {
         compatible = "fsl,imx7ulp-lpi2c";
         reg = <0x40A50000 0x10000>;
         interrupt-parent = <&intc>;
-- 
2.17.1