linux-kernel - [PATCH v2 1/3] dt-bindings: ata: eswin: Document for EIC7700 SoC ahci

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Message-Id: <20250819135413.386-1-luyulin@eswincomputing.com>
Date: Tue, 19 Aug 2025 21:54:13 +0800
From: Yulin Lu <luyulin@...incomputing.com>
To: dlemoal@...nel.org,
	cassel@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	linux-ide@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	vkoul@...nel.org,
	kishon@...nel.org,
	linux-phy@...ts.infradead.org
Cc: ningyu@...incomputing.com,
	zhengyu@...incomputing.com,
	linmin@...incomputing.com,
	huangyifeng@...incomputing.com,
	fenglin@...incomputing.com,
	lianghujun@...incomputing.com,
	luyulin <luyulin@...incomputing.com>
Subject: [PATCH v2 1/3] dt-bindings: ata: eswin: Document for EIC7700 SoC ahci

From: luyulin <luyulin@...incomputing.com>

Add document for the SATA AHCI controller on the EIC7700 SoC platform,
including descriptions of its hardware configurations.

Signed-off-by: luyulin <luyulin@...incomputing.com>
---
 .../bindings/ata/eswin,eic7700-ahci.yaml      | 92 +++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/ata/eswin,eic7700-ahci.yaml

diff --git a/Documentation/devicetree/bindings/ata/eswin,eic7700-ahci.yaml b/Documentation/devicetree/bindings/ata/eswin,eic7700-ahci.yaml
new file mode 100644
index 000000000000..9ef58c9c2f28
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/eswin,eic7700-ahci.yaml
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ata/eswin,eic7700-ahci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Eswin EIC7700 SoC SATA Controller
+
+maintainers:
+  - Yulin Lu <luyulin@...incomputing.com>
+  - Huan He <hehuan1@...incomputing.com>
+
+description:
+  This document defines device tree bindings for the Synopsys DWC
+  implementation of the AHCI SATA controller found in Eswin's
+  Eic7700 SoC platform.
+
+select:
+  properties:
+    compatible:
+      const: eswin,eic7700-ahci
+  required:
+    - compatible
+
+allOf:
+  - $ref: snps,dwc-ahci-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: eswin,eic7700-ahci
+      - const: snps,dwc-ahci
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  ports-implemented:
+    const: 1
+
+  clocks:
+    minItems: 2
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: aclk
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    const: arst
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    const: sata-phy
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - phys
+  - phy-names
+  - ports-implemented
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    sata@...20000 {
+        compatible = "eswin,eic7700-ahci", "snps,dwc-ahci";
+        reg = <0x50420000 0x10000>;
+        interrupt-parent = <&plic>;
+        interrupts = <58>;
+        ports-implemented = <0x1>;
+        clocks = <&gate_clk_hsp_cfgclk>, <&gate_clk_hsp_aclk>;
+        clock-names = "pclk", "aclk";
+        resets = <&reset 96>;
+        reset-names = "arst";
+        phys = <&sata_phy>;
+        phy-names = "sata-phy";
+    };
-- 
2.25.1