[PATCH 03/17] dt-bindings: i2c: samsung,s3c2410-i2c: add specific compatibles for existing SoC

[Krzysztof Kozlowski]

Samsung Exynos SoC reuses several devices from older designs, thus
historically we kept the old (block's) compatible only.  This works fine
and there is no bug here, however guidelines expressed in
Documentation/devicetree/bindings/writing-bindings.rst state that:
1. Compatibles should be specific.
2. We should add new compatibles in case of bugs or features.

Add compatibles specific to each SoC in front of all old-SoC-like
compatibles.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>

---

I propose to take the patch through Samsung SoC (me). See cover letter
for explanation.
---
 .../bindings/i2c/samsung,s3c2410-i2c.yaml     | 22 ++++++++++++-------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml b/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
index b204e35e4f8d..1303502cf265 100644
--- a/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/samsung,s3c2410-i2c.yaml
@@ -11,14 +11,20 @@ maintainers:
 
 properties:
   compatible:
-    enum:
-      - samsung,s3c2410-i2c
-      - samsung,s3c2440-i2c
-        # For s3c2440-like I2C used inside HDMIPHY block found on several SoCs:
-      - samsung,s3c2440-hdmiphy-i2c
-        # For s3c2440-like I2C used as a host to SATA PHY controller on an
-        # internal bus:
-      - samsung,exynos5-sata-phy-i2c
+    oneOf:
+      - enum:
+          - samsung,s3c2410-i2c
+          - samsung,s3c2440-i2c
+            # For s3c2440-like I2C used inside HDMIPHY block found on several SoCs:
+          - samsung,s3c2440-hdmiphy-i2c
+            # For s3c2440-like I2C used as a host to SATA PHY controller on an
+            # internal bus:
+          - samsung,exynos5-sata-phy-i2c
+      - items:
+          - enum:
+              - samsung,exynos7885-i2c
+              - samsung,exynos850-i2c
+          - const: samsung,s3c2440-i2c
 
   '#address-cells':
     const: 1
-- 
2.34.1