arm64: dts: allwinner: Add basic Allwinner A523 support

[PATCH 02/14] dt-bindings: mmc: sunxi: add compatible strings for Allwinner A523

Posted by Andre Przywara 1 month ago

The Allwinner A523 uses the same MMC IP as the D1.

Introduce the new specific compatible strings, and use them with
fallbacks to the D1 strings.

Also it turned out that the A100 is not compatible to the H616, instead
it is the same as the D1. For compatibility we cannot change the fallback
chain, but any drivers are from now on supposed to match on the H616
string directly. Mark this fallback chain as deprecated, to avoid new
users to be added.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 .../devicetree/bindings/mmc/allwinner,sun4i-a10-mmc.yaml    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mmc/allwinner,sun4i-a10-mmc.yaml b/Documentation/devicetree/bindings/mmc/allwinner,sun4i-a10-mmc.yaml
index 8e4c77b7e4ab9..40b83af02c3f9 100644
--- a/Documentation/devicetree/bindings/mmc/allwinner,sun4i-a10-mmc.yaml
+++ b/Documentation/devicetree/bindings/mmc/allwinner,sun4i-a10-mmc.yaml
@@ -50,10 +50,14 @@ properties:
           - enum:
               - allwinner,sun20i-d1-emmc
               - allwinner,sun50i-h616-emmc
+              - allwinner,sun55i-a523-emmc
           - const: allwinner,sun50i-a100-emmc
-      - items:
+      - items:  # deprecated fallback chain
           - const: allwinner,sun50i-h616-mmc
           - const: allwinner,sun50i-a100-mmc
+      - items:
+          - const: allwinner,sun55i-a523-mmc
+          - const: allwinner,sun20i-d1-mmc
 
   reg:
     maxItems: 1
-- 
2.46.2

Re: [PATCH 02/14] dt-bindings: mmc: sunxi: add compatible strings for Allwinner A523

Posted by Conor Dooley 1 month ago

On Mon, Nov 11, 2024 at 01:30:21AM +0000, Andre Przywara wrote:
> The Allwinner A523 uses the same MMC IP as the D1.
> 
> Introduce the new specific compatible strings, and use them with
> fallbacks to the D1 strings.
> 
> Also it turned out that the A100 is not compatible to the H616, instead
> it is the same as the D1. For compatibility we cannot change the fallback
> chain, but any drivers are from now on supposed to match on the H616
> string directly. Mark this fallback chain as deprecated, to avoid new
> users to be added.

tbh, I think this should be split out into a fix commit of its own.

Split,
Acked-by: Conor Dooley <conor.dooley@microchip.com>