Re: [PATCH 1/3] spi: dt-bindings: amlogic: spisg: Document A9-specific properties
From: Xianwei Zhao
Date: Tue Jul 21 2026 - 22:21:30 EST
Hi Krzysztof,
Thank you for your advice.
On 2026/7/21 18:18, Krzysztof Kozlowski wrote:
On Fri, Jul 17, 2026 at 07:49:33AM +0000, Xianwei Zhao wrote:
Document the Amlogic A9 SPISG controller and its additionalProperties MUST be defined in top-level. You only restrict them here.
Device Tree properties.
Add the "amlogic,a9-spisg" compatible string and define the
A9-specific "amlogic,mo-idle-output" and "amlogic,word-gap"
properties, which configure the MOSI idle output level and
the inter-word gap, respectively.
Signed-off-by: Xianwei Zhao<xianwei.zhao@xxxxxxxxxxx>
---
.../devicetree/bindings/spi/amlogic,a4-spisg.yaml | 36 +++++++++++++++++++---
1 file changed, 32 insertions(+), 4 deletions(-)
diff --git a/Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml b/Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml
index 9bfb8089f7ea..7efdc748d566 100644
--- a/Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml
+++ b/Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml
@@ -11,12 +11,11 @@ maintainers:
- Xianwei Zhao<xianwei.zhao@xxxxxxxxxxx>
- Sunny Luo<sunny.luo@xxxxxxxxxxx>
-allOf:
- - $ref: spi-controller.yaml#
-
properties:
compatible:
- const: amlogic,a4-spisg
+ enum:
+ - amlogic,a4-spisg
+ - amlogic,a9-spisg
reg:
maxItems: 1
@@ -42,6 +41,35 @@ required:
- clocks
- clock-names
+allOf:
+ - $ref: spi-controller.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - amlogic,a9-spisg
+ then:
+ properties:
See writing-schema and example-schema.
Will do.
Best regards,
Krzysztof