linux-kernel - [PATCH v2 1/1] dt-bindings: soc: Add fsl,imx23-digctl.yaml for i.MX23 and i.MX28

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Message-Id: <20250528183549.694434-1-Frank.Li@nxp.com>
Date: Wed, 28 May 2025 14:35:48 -0400
From: Frank Li <Frank.Li@....com>
To: Christophe Leroy <christophe.leroy@...roup.eu>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	linuxppc-dev@...ts.ozlabs.org (open list:FREESCALE SOC DRIVERS),
	linux-arm-kernel@...ts.infradead.org (moderated list:FREESCALE SOC DRIVERS),
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	imx@...ts.linux.dev (open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev
Subject: [PATCH v2 1/1] dt-bindings: soc: Add fsl,imx23-digctl.yaml for i.MX23 and i.MX28

Add fsl,imx23-digctl.yaml for i.MX23 and i.MX28 to fix below CHECK_DTB
warning:

arch/arm/boot/dts/nxp/mxs/imx23-sansa.dtb: /apb@...00000/apbh-bus@...00000/digctl@...1c000:
    failed to match any schema with compatible: ['fsl,imx23-digctl']

Signed-off-by: Frank Li <Frank.Li@....com>
---
change in v2
- add more description about digctrl hardware module
- fix double /
---
 .../bindings/soc/fsl/fsl,imx23-digctl.yaml    | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/fsl/fsl,imx23-digctl.yaml

diff --git a/Documentation/devicetree/bindings/soc/fsl/fsl,imx23-digctl.yaml b/Documentation/devicetree/bindings/soc/fsl/fsl,imx23-digctl.yaml
new file mode 100644
index 0000000000000..3de135a70579a
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/fsl/fsl,imx23-digctl.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/fsl/fsl,imx23-digctl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale mxs digctrl for i.MX23/i.MX28
+
+description: |
+  The digital control block provides overall control of various items within
+  the top digital block of the chip, including:
+    - Default first-level page table (DFLPT) controls
+    - HCLK performance counter
+    - Free-running microseconds counter
+    - Entropy control
+    - BIST controls for ARM Core and On-Chip RAM
+    - Chip Revision register
+    - USB loop back congtrol
+    - Other miscellaneous controls
+
+maintainers:
+  - Frank Li <Frank.Li@....com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - fsl,imx28-digctl
+          - const: fsl,imx23-digctl
+      - const: fsl,imx23-digctl
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    digctl@...1c000 {
+        compatible = "fsl,imx28-digctl", "fsl,imx23-digctl";
+        reg = <0x8001c000 0x2000>;
+        interrupts = <89>;
+    };
+
-- 
2.34.1