From: Peng Fan <peng.fan@xxxxxxx>
i.MX8ULP and i.MX93 actually has two interrupts for each gpio
controller, one for Trustzone non-secure world, one for secure world.
And they has one register based, not two as i.MX7ULP or VF610.
Although the Linux Kernel driver gpio-vf610.c could work with
fsl,imx7ulp-gpio compatible, it is based on some tricks did in
device tree with some offset added to base address.
So actually i.MX8ULP/i.MX93 is not compatible with i.MX7ULP.
Last, i.MX93 is directly derived from i.MX8ULP, so make i.MX93 GPIO
compatible with i.MX8ULP
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
.../devicetree/bindings/gpio/gpio-vf610.yaml | 36 +++++++++++++++++++---
1 file changed, 31 insertions(+), 5 deletions(-)
diff --git a/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml b/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml
index 59427d97adf5..21199bf221ef 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml
+++ b/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml
@@ -20,6 +20,7 @@ description: |
properties:
compatible:
oneOf:
+ - const: fsl,imx8ulp-gpio
- const: fsl,vf610-gpio
- items:
- const: fsl,imx7ulp-gpio
@@ -27,16 +28,17 @@ properties:
- items:
- enum:
- fsl,imx93-gpio
- - fsl,imx8ulp-gpio
- - const: fsl,imx7ulp-gpio
+ - const: fsl,imx8ulp-gpio
reg:
- description: The first reg tuple represents the PORT module, the second tuple
- represents the GPIO module.
+ minItems: 1
maxItems: 2
interrupts:
- maxItems: 1
+ items:
+ - description: GPIO Trustzone non-secure interrupt number
+ - description: GPIO Trustzone secure interrupt number
+ minItems: 1
interrupt-controller: true
@@ -78,6 +80,30 @@ required:
- "#gpio-cells"
- gpio-controller
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,vf610-gpio
+ - fsl,imx7ulp-gpio
+ then:
+ properties:
+ interrupts:
+ maxItems: 1
+ reg:
+ items:
+ - description: PORT register base address
+ - description: GPIO register base address
+ else:
+ properties:
+ interrupts:
+ minItems: 2
+ reg:
+ items:
+ - description: GPIO register base address
+
additionalProperties: false
examples:
--
2.37.1
