[PATCH v2 01/12] dt-bindings: soc: starfive: Add StarFive JHB100 syscon modules

From: Changhuang Liang <changhuang.liang@starfivetech.com>
To: Michael Turquette <mturquette@baylibre.com>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Stephen Boyd <sboyd@kernel.org>,
	Brian Masney <bmasney@redhat.com>, Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Emil Renner Berthing <kernel@esmil.dk>
Cc: Chen Wang <unicorn_wang@outlook.com>,
	Inochi Amaoto <inochiama@gmail.com>,
	Alexey Charkov <alchark@gmail.com>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Keguang Zhang <keguang.zhang@gmail.com>,
	linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
	Changhuang Liang <changhuang.liang@starfivetech.com>
Subject: [PATCH v2 01/12] dt-bindings: soc: starfive: Add StarFive JHB100 syscon modules
Date: Tue, 12 May 2026 01:35:10 -0700	[thread overview]
Message-ID: <20260512083521.3448-2-changhuang.liang@starfivetech.com> (raw)
In-Reply-To: <20260512083521.3448-1-changhuang.liang@starfivetech.com>

Add documentation to describe StarFive JHB100 SoC System Controller
Registers.

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
---
 .../soc/starfive/starfive,jhb100-syscon.yaml  | 107 ++++++++++++++++++
 MAINTAINERS                                   |   5 +
 2 files changed, 112 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/starfive/starfive,jhb100-syscon.yaml

diff --git a/Documentation/devicetree/bindings/soc/starfive/starfive,jhb100-syscon.yaml b/Documentation/devicetree/bindings/soc/starfive/starfive,jhb100-syscon.yaml
new file mode 100644
index 000000000000..0add3d9727ac
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/starfive/starfive,jhb100-syscon.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/starfive/starfive,jhb100-syscon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JHB100 SoC system controller
+
+maintainers:
+  - Kevin Xie <kevin.xie@starfivetech.com>
+  - Changhuang Liang <changhuang.liang@starfivetech.com>
+
+description:
+  The StarFive JHB100 SoC system controller contains MMIO registers used by
+  other hardware modules (e.g., PLL, eMMC, PCIe). These modules access
+  specific register offsets, bit masks, and shifts within the system
+  controller region for configuration and status.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - starfive,jhb100-b2h-syscon
+          - starfive,jhb100-gpu-syscon
+          - starfive,jhb100-h2b-syscon
+          - starfive,jhb100-host-syscon
+          - starfive,jhb100-husb-syscon
+          - starfive,jhb100-husbcmn-syscon
+          - starfive,jhb100-husbd-syscon
+          - starfive,jhb100-npu-syscon
+          - starfive,jhb100-pcieep-ecsr-syscon
+          - starfive,jhb100-pcierp-ecsr-syscon
+          - starfive,jhb100-pcierp-syscon
+          - starfive,jhb100-per0-syscon
+          - starfive,jhb100-per1-syscon
+          - starfive,jhb100-per2-syscon
+          - starfive,jhb100-per3-syscon
+          - starfive,jhb100-strap-syscon
+          - starfive,jhb100-sys0-syscon
+          - starfive,jhb100-sys1-syscon
+          - starfive,jhb100-sys2-syscon
+          - starfive,jhb100-usb-syscon
+          - starfive,jhb100-vout-syscon
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+  '#reset-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - starfive,jhb100-per0-syscon
+              - starfive,jhb100-per1-syscon
+              - starfive,jhb100-sys0-syscon
+    then:
+      required:
+        - clocks
+        - '#clock-cells'
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: starfive,jhb100-pcierp-syscon
+    then:
+      required:
+        - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    syscon@13010000 {
+        compatible = "starfive,jhb100-sys0-syscon", "syscon";
+        reg = <0x13010000 0x2000>;
+        clocks = <&osc>;
+        #clock-cells = <1>;
+    };
+
+    syscon@13014000 {
+        compatible = "starfive,jhb100-sys1-syscon", "syscon";
+        reg = <0x13014000 0x4000>;
+    };
+
+    syscon@11719000 {
+        compatible = "starfive,jhb100-pcierp-syscon", "syscon";
+        reg = <0x11719000 0x1000>;
+        #reset-cells = <1>;
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 47e4b368347f..6f6aac7cea95 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -25613,6 +25613,11 @@ S:	Maintained
 F:	drivers/reset/starfive/reset-starfive-jhb1*
 F:	include/dt-bindings/reset/starfive,jhb1*.h
 
+STARFIVE JHB100 SYSCON
+M:	Changhuang Liang <changhuang.liang@starfivetech.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/soc/starfive/starfive,jhb100-syscon.yaml
+
 STATIC BRANCH/CALL
 M:	Peter Zijlstra <peterz@infradead.org>
 M:	Josh Poimboeuf <jpoimboe@kernel.org>
-- 
2.25.1

