[PATCH] dt-bindings: nvmem: snvs-lpgpr: Fix i.MX8M compatible strings

[Marek Vasut]

The compatible strings for "fsl,imx8m*-snvs-lpgpr" always contain
the fallback "fsl,imx7d-snvs-lpgpr" compatible in DTs too, since
the fallback compatible is what the driver matches on, this way:
  compatible = "fsl,imx8mm-snvs-lpgpr", "fsl,imx7d-snvs-lpgpr"
The older "fsl,imx7d-snvs-lpgpr" and "fsl,imx6*-snvs-lpgpr" used
only that single compatible string.

Document both options in the binding document.

Signed-off-by: Marek Vasut <marex at denx.de>
---
Cc: Anson Huang <Anson.Huang at nxp.com>
Cc: Fabio Estevam <festevam at denx.de>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt at linaro.org>
Cc: Oleksij Rempel <linux at rempel-privat.de>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: NXP Linux Team <linux-imx at nxp.com>
Cc: devicetree at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
---
 .../devicetree/bindings/nvmem/snvs-lpgpr.yaml | 20 +++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/nvmem/snvs-lpgpr.yaml b/Documentation/devicetree/bindings/nvmem/snvs-lpgpr.yaml
index e374aa7891ae7..ec20e33d9b8f8 100644
--- a/Documentation/devicetree/bindings/nvmem/snvs-lpgpr.yaml
+++ b/Documentation/devicetree/bindings/nvmem/snvs-lpgpr.yaml
@@ -11,14 +11,18 @@ maintainers:
 
 properties:
   compatible:
-    enum:
-      - fsl,imx6q-snvs-lpgpr
-      - fsl,imx6ul-snvs-lpgpr
-      - fsl,imx7d-snvs-lpgpr
-      - fsl,imx8mm-snvs-lpgpr
-      - fsl,imx8mn-snvs-lpgpr
-      - fsl,imx8mp-snvs-lpgpr
-      - fsl,imx8mq-snvs-lpgpr
+    oneOf:
+      - items:
+          - enum:
+              - fsl,imx8mm-snvs-lpgpr
+              - fsl,imx8mn-snvs-lpgpr
+              - fsl,imx8mp-snvs-lpgpr
+              - fsl,imx8mq-snvs-lpgpr
+          - const: fsl,imx7d-snvs-lpgpr
+      - enum:
+          - fsl,imx6q-snvs-lpgpr
+          - fsl,imx6ul-snvs-lpgpr
+          - fsl,imx7d-snvs-lpgpr
 
 required:
   - compatible
-- 
2.35.1