linux-kernel - [PATCH 2/9] dt-bindings: fsl,fpga-qixis-i2c: extend support to also cover the LX2160ARDB FPGA

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Message-Id: <20250709112658.1987608-3-ioana.ciornei@nxp.com>
Date: Wed,  9 Jul 2025 14:26:51 +0300
From: Ioana Ciornei <ioana.ciornei@....com>
To: devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Cc: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Shawn Guo <shawnguo@...nel.org>,
	Michael Walle <mwalle@...nel.org>,
	Lee Jones <lee@...nel.org>,
	Frank Li <Frank.Li@....com>
Subject: [PATCH 2/9] dt-bindings: fsl,fpga-qixis-i2c: extend support to also cover the LX2160ARDB FPGA

Extend the list of supported compatible strings with fsl,lx2160ardb-fpga.

Since the register map exposed by the LX2160ARDB's FPGA also contains
two GPIO controllers, accept the necessary GPIO pattern property. At the
same time, add the #address-cells and #size-cells properties as valid
ones.

This is needed because when defining child devices such as the GPIO
controller described in the added example, the child device needs a the
reg property to properly identify its register location.

Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
---
 .../bindings/board/fsl,fpga-qixis-i2c.yaml    | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/Documentation/devicetree/bindings/board/fsl,fpga-qixis-i2c.yaml b/Documentation/devicetree/bindings/board/fsl,fpga-qixis-i2c.yaml
index 28b37772fb65..e8981f974210 100644
--- a/Documentation/devicetree/bindings/board/fsl,fpga-qixis-i2c.yaml
+++ b/Documentation/devicetree/bindings/board/fsl,fpga-qixis-i2c.yaml
@@ -22,6 +22,13 @@ properties:
               - fsl,lx2160aqds-fpga
           - const: fsl,fpga-qixis-i2c
           - const: simple-mfd
+      - const: fsl,lx2160ardb-fpga
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
 
   interrupts:
     maxItems: 1
@@ -32,6 +39,10 @@ properties:
   mux-controller:
     $ref: /schemas/mux/reg-mux.yaml
 
+patternProperties:
+  "^gpio(@[0-9a-f]+)?$":
+    $ref: /schemas/gpio/fsl,fpga-gpio.yaml
+
 required:
   - compatible
   - reg
@@ -68,3 +79,27 @@ examples:
         };
     };
 
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        board-control@66 {
+            compatible = "fsl,lx2160ardb-fpga";
+            reg = <0x66>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            gpio@19 {
+                compatible = "fsl,lx2160ardb-fpga-gpio-sfp2";
+                reg = <0x19>;
+                gpio-controller;
+                #gpio-cells = <2>;
+                gpio-line-names =
+                    "SFP2_TX_EN", "",
+                    "", "",
+                    "SFP2_RX_LOS", "SFP2_TX_FAULT",
+                    "", "SFP2_MOD_ABS";
+            };
+        };
+    };
-- 
2.25.1