From: Peng Fan <peng.fan@xxxxxxx>
Similar to i.MX8ULP S4 MU, i.MX93 MU is dedicated for communication
between Sentinel and Cortex-A cores from hardware design, it could not be
reused for other purpose.
However i.MX93 S4 MU use separate tx/rx interrupt, so update
interrupts and add interrupt-names property.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
Hi Rob,
For dual entries, I tested below with dt_binding_check and dtbs_check
"
+ s4muap: s4muap@47520000 {
+ compatible = "fsl,imx93-mu-s4";
+ reg = <0x47520000 0x10000>;
+ interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "tx", "rx";
+ #mbox-cells = <2>;
+ status = "okay";
+ };
+
+ s4muap1: s4muap@48520000 {
+ compatible = "fsl,imx8ulp-mu-s4";
+ reg = <0x48520000 0x10000>;
+ interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "tx", "rx";
+ #mbox-cells = <2>;
+ status = "okay";
+ };
"
.../devicetree/bindings/mailbox/fsl,mu.yaml | 28 ++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
index 6d056d5e16bf..82ce0280add9 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
@@ -29,6 +29,7 @@ properties:
- const: fsl,imx8ulp-mu
- const: fsl,imx8-mu-scu
- const: fsl,imx8-mu-seco
+ - const: fsl,imx93-mu-s4
- const: fsl,imx8ulp-mu-s4
- items:
- const: fsl,imx93-mu
@@ -55,7 +56,14 @@ properties:
maxItems: 1
interrupts:
- maxItems: 1
+ minItems: 1
+ maxItems: 2
+
+ interrupt-names:
+ minItems: 1
+ items:
+ - const: tx
+ - const: rx
"#mbox-cells":
description: |
@@ -90,6 +98,24 @@ required:
- interrupts
- "#mbox-cells"
+allOf:
+ - if:
+ properties:
+ compatible:
+ enum:
+ - fsl,imx93-mu-s4
+ then:
+ properties:
+ interrupt-names:
+ minItems: 2
+ interrupts:
+ minItems: 2
+
+ else:
+ properties:
+ interrupts:
+ maxItems: 1
+
additionalProperties: false
examples:
--
2.25.1
