linux-kernel - [PATCH v2 2/6] dt-bindings: gpio: vf610: correct i.MX8ULP and i.MX93

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Date:   Sat, 16 Sep 2023 10:03:58 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andy@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Stefan Agner <stefan@...er.ch>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Peng Fan <peng.fan@....com>
Subject: [PATCH v2 2/6] dt-bindings: gpio: vf610: correct i.MX8ULP and
 i.MX93

From: Peng Fan <peng.fan@....com>

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

Signed-off-by: Peng Fan <peng.fan@....com>
---
 .../devicetree/bindings/gpio/gpio-vf610.yaml       | 41 +++++++++++++++++++---
 1 file changed, 37 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml b/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml
index 59427d97adf5..8c1f87a1a393 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 +28,21 @@ 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.
-    maxItems: 2
+    items:
+      - description: PORT register base address
+      - description: GPIO register base address
+    minItems: 1
 
   interrupts:
-    maxItems: 1
+    items:
+      - description: GPIO Trustzone non-secure interrupt number
+      - description: GPIO Trustzone secure interrupt number
+    minItems: 1
 
   interrupt-controller: true
 
@@ -78,6 +84,33 @@ required:
   - "#gpio-cells"
   - gpio-controller
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,vf610-gpio
+              - fsl,imx7ulp-gpio
+    then:
+      properties:
+        interrupts:
+          items:
+            - description: GPIO interrupt number
+        reg:
+          items:
+            - description: PORT register base address
+            - description: GPIO register base address
+    else:
+      properties:
+        interrupts:
+          items:
+            - description: GPIO Trustzone non-secure interrupt number
+            - description: GPIO Trustzone secure interrupt number
+        reg:
+          items:
+            - description: GPIO register base address
+
 additionalProperties: false
 
 examples:

-- 
2.37.1