Re: [PATCH v2 09/11] dt-bindings: mmc: convert amlogic,meson-gx.txt to dt-schema

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On 10/01/2023 11:17, Krzysztof Kozlowski wrote:
On 09/01/2023 13:53, Neil Armstrong wrote:
Convert the Amlogic SD / eMMC controller for S905/GXBB family SoCs
to dt-schema.

Take in account the used variant with amlogic,meson-gx-mmc.

Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
  .../bindings/mmc/amlogic,meson-gx-mmc.yaml         | 75 ++++++++++++++++++++++
  .../devicetree/bindings/mmc/amlogic,meson-gx.txt   | 39 -----------
  2 files changed, 75 insertions(+), 39 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml
new file mode 100644
index 000000000000..30228964fd9c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/amlogic,meson-gx-mmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic SD / eMMC controller for S905/GXBB family SoCs
+
+description:
+  The MMC 5.1 compliant host controller on Amlogic provides the
+  interface for SD, eMMC and SDIO devices
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@xxxxxxxxxx>
+
+allOf:
+  - $ref: mmc-controller.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - amlogic,meson-gx-mmc
+          - amlogic,meson-axg-mmc
+      - items:
+          - const: amlogic,meson-gx-mmc

This does not look correct. Either gx is alone (not compatible with
gxbb) or it is compatible with gxbb. Cannot be both.

This ishow it's used in DT:

arch/arm64/boot/dts/amlogic/meson-gx.dtsi:                              compatible = "amlogic,meson-gx-mmc", "amlogic,meson-gxbb-mmc";
arch/arm64/boot/dts/amlogic/meson-axg.dtsi:                             compatible = "amlogic,meson-axg-mmc";
arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi:                      compatible = "amlogic,meson-axg-mmc";

So I'll drop the amlogic,meson-gx-mmc in the first enum to have :
+properties:
+  compatible:
+    oneOf:
+      - const: amlogic,meson-axg-mmc
+      - items:
+          - const: amlogic,meson-gx-mmc
+          - const: amlogic,meson-gxbb-mmc

It's right ?

Neil




Best regards,
Krzysztof





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