From: Aaron Kling <webgeek1234@gmail.com>

The nvidia,tegra21-emc compatible is required by the Nvidia Android
bootloader to copy emc training value into the kernel dt. So allow this
as a fallback compatible to avoid needing to change the driver.

Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
---
 .../devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
index 78e3417d273a329b77bf2f61de41b29017be56d3..acae6c8a6c0ab9ceaddf00342c933499350568eb 100644
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml
@@ -16,7 +16,11 @@ description: |
 
 properties:
   compatible:
-    const: nvidia,tegra210-emc
+    oneOf:
+      - const: nvidia,tegra210-emc
+      - items:
+          - const: nvidia,tegra210-emc
+          - const: nvidia,tegra21-emc
 
   reg:
     maxItems: 3

-- 
2.48.1

On Thu, 08 May 2025 01:07:39 -0500, Aaron Kling wrote:
> The nvidia,tegra21-emc compatible is required by the Nvidia Android
> bootloader to copy emc training value into the kernel dt. So allow this
> as a fallback compatible to avoid needing to change the driver.
> 
> Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
> ---
>  .../devicetree/bindings/memory-controllers/nvidia,tegra210-emc.yaml | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:


doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20250508-tegra210-emc-dt-v2-2-d33dc20a1123@gmail.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.