The Allwinner A523 SoC implements 10 GPIO banks in the first pinctrl
instance, but it skips the first bank (PortA), so their index goes from
1 to 10. The same is actually true for the IRQ banks: there are registers
for 11 banks, though the first bank is not implemented (RAZ/WI).
In contrast to previous SoCs, the count of the IRQ banks starts with this
first unimplemented bank, so we need to provide an interrupt for it.
And indeed the A523 user manual lists an interrupt number for PortA, so we
need to increase the maximum number of interrupts per pin controller to 11,
to be able to assign the correct interrupt number for each bank.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 .../bindings/pinctrl/allwinner,sun55i-a523-pinctrl.yaml   | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/allwinner,sun55i-a523-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/allwinner,sun55i-a523-pinctrl.yaml
index 154e03da8ce9..f87b8274cc37 100644
--- a/Documentation/devicetree/bindings/pinctrl/allwinner,sun55i-a523-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/allwinner,sun55i-a523-pinctrl.yaml
@@ -34,7 +34,7 @@ properties:
 
   interrupts:
     minItems: 2
-    maxItems: 10
+    maxItems: 11
     description:
       One interrupt per external interrupt bank supported on the
       controller, sorted by bank number ascending order.
@@ -61,7 +61,7 @@ properties:
       bank found in the controller
     $ref: /schemas/types.yaml#/definitions/uint32-array
     minItems: 2
-    maxItems: 10
+    maxItems: 11
 
 patternProperties:
   # It's pretty scary, but the basic idea is that:
@@ -130,8 +130,8 @@ allOf:
     then:
       properties:
         interrupts:
-          minItems: 10
-          maxItems: 10
+          minItems: 11
+          maxItems: 11
 
   - if:
       properties:
-- 
2.43.0

Dne petek, 27. marec 2026 ob 12:30:05 Srednjeevropski standardni čas je Andre Przywara napisal(a):
> The Allwinner A523 SoC implements 10 GPIO banks in the first pinctrl
> instance, but it skips the first bank (PortA), so their index goes from
> 1 to 10. The same is actually true for the IRQ banks: there are registers
> for 11 banks, though the first bank is not implemented (RAZ/WI).
> In contrast to previous SoCs, the count of the IRQ banks starts with this
> first unimplemented bank, so we need to provide an interrupt for it.
> And indeed the A523 user manual lists an interrupt number for PortA, so we
> need to increase the maximum number of interrupts per pin controller to 11,
> to be able to assign the correct interrupt number for each bank.
> 
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Best regards,
Jernej