linux-kernel - [RFC v3 11/16] dt-bindings: clock: Add StarFive JH8100 South-West clock and reset generator

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Date: Wed, 10 Jan 2024 21:31:23 +0800
From: Sia Jee Heng <jeeheng.sia@...rfivetech.com>
To: kernel@...il.dk,
	conor@...nel.org,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	paul.walmsley@...ive.com,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	mturquette@...libre.com,
	sboyd@...nel.org,
	p.zabel@...gutronix.de,
	emil.renner.berthing@...onical.com,
	hal.feng@...rfivetech.com,
	xingyu.wu@...rfivetech.com
Cc: linux-riscv@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	jeeheng.sia@...rfivetech.com,
	leyfoon.tan@...rfivetech.com,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [RFC v3 11/16] dt-bindings: clock: Add StarFive JH8100 South-West clock and reset generator

Add bindings for the South-West clock and reset generator (SWCRG) on
JH8100 SoC.

Signed-off-by: Sia Jee Heng <jeeheng.sia@...rfivetech.com>
Reviewed-by: Ley Foon Tan <leyfoon.tan@...rfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../bindings/clock/starfive,jh8100-swcrg.yaml | 64 +++++++++++++++++++
 .../dt-bindings/clock/starfive,jh8100-crg.h   | 12 ++++
 .../dt-bindings/reset/starfive,jh8100-crg.h   |  8 +++
 3 files changed, 84 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/starfive,jh8100-swcrg.yaml

diff --git a/Documentation/devicetree/bindings/clock/starfive,jh8100-swcrg.yaml b/Documentation/devicetree/bindings/clock/starfive,jh8100-swcrg.yaml
new file mode 100644
index 000000000000..287dff7e91e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/starfive,jh8100-swcrg.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/starfive,jh8100-swcrg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH8100 South-West Clock And Reset Generator
+
+maintainers:
+  - Sia Jee Heng <jeeheng.sia@...rfivetech.com>
+
+properties:
+  compatible:
+    const: starfive,jh8100-swcrg
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: APB_BUS clock from SYSCRG
+      - description: VDEC_ROOT clock from SYSCRG
+      - description: FLEXNOC1 clock from SYSCRG
+
+  clock-names:
+    items:
+      - const: apb_bus
+      - const: vdec_root
+      - const: flexnoc1
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/starfive,jh8100-crg.h> for valid indices.
+
+  '#reset-cells':
+    const: 1
+    description:
+      See <dt-bindings/reset/starfive,jh8100-crg.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+  - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/starfive,jh8100-crg.h>
+
+    clock-controller@...20000 {
+        compatible = "starfive,jh8100-swcrg";
+        reg = <0x12720000 0x10000>;
+        clocks = <&syscrg JH8100_SYSCLK_APB_BUS>,
+                 <&syscrg JH8100_SYSCLK_VDEC_ROOT>,
+                 <&syscrg JH8100_SYSCLK_FLEXNOC1>;
+        clock-names = "apb_bus", "vdec_root", "flexnoc1";
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+    };
diff --git a/include/dt-bindings/clock/starfive,jh8100-crg.h b/include/dt-bindings/clock/starfive,jh8100-crg.h
index c37b42f3eacd..7b337c1495be 100644
--- a/include/dt-bindings/clock/starfive,jh8100-crg.h
+++ b/include/dt-bindings/clock/starfive,jh8100-crg.h
@@ -339,4 +339,16 @@
 #define JH8100_NECLK_CAN1_ICG_EN					173
 #define JH8100_NECLK_SMBUS0_ICG_EN					174
 
+/* SWCRG clocks */
+#define JH8100_SWCLK_JPEG_AXI						0
+#define JH8100_SWCLK_VC9000DJ_AXI					1
+#define JH8100_SWCLK_VC9000DJ_VDEC					2
+#define JH8100_SWCLK_VC9000DJ_APB					3
+#define JH8100_SWCLK_VDEC_AXI						4
+#define JH8100_SWCLK_VC9000D_AXI					5
+#define JH8100_SWCLK_VC9000D_VDEC					6
+#define JH8100_SWCLK_VC9000D_APB					7
+#define JH8100_SWCLK_JPEG_ICG_EN					8
+#define JH8100_SWCLK_VDEC_ICG_EN					9
+
 #endif /* __DT_BINDINGS_CLOCK_STARFIVE_JH8100_H__ */
diff --git a/include/dt-bindings/reset/starfive,jh8100-crg.h b/include/dt-bindings/reset/starfive,jh8100-crg.h
index 30a99c78341a..de4f25dc301d 100644
--- a/include/dt-bindings/reset/starfive,jh8100-crg.h
+++ b/include/dt-bindings/reset/starfive,jh8100-crg.h
@@ -91,4 +91,12 @@
 #define JH8100_NERST_SYS_IOMUX_E				48
 #define JH8100_NERST_DUBHE_TVSENSOR				49
 
+/*
+ * SWCRG resets: assert0
+ */
+#define JH8100_SWRST_PRESETN					0
+#define JH8100_SWRST_VC9000DJ					1
+#define JH8100_SWRST_VC9000D					2
+#define JH8100_SWRST_DDR_TVSENSOR				3
+
 #endif /* __DT_BINDINGS_RESET_STARFIVE_JH8100_H__ */
-- 
2.34.1