linux-kernel - [PATCH v3 08/11] dt-bindings: clock: Add StarFive JH7110 always-on clock and reset generator

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Date:   Tue, 20 Dec 2022 08:50:51 +0800
From:   Hal Feng <hal.feng@...rfivetech.com>
To:     <linux-riscv@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-clk@...r.kernel.org>
CC:     Conor Dooley <conor@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        "Rob Herring" <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        "Michael Turquette" <mturquette@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>,
        Hal Feng <hal.feng@...rfivetech.com>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 08/11] dt-bindings: clock: Add StarFive JH7110 always-on clock and reset generator

From: Emil Renner Berthing <kernel@...il.dk>

Add bindings for the always-on clock and reset generator (AONCRG) on the
JH7110 RISC-V SoC by StarFive Ltd.

Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
Signed-off-by: Hal Feng <hal.feng@...rfivetech.com>
---
 .../clock/starfive,jh7110-aoncrg.yaml         | 76 +++++++++++++++++++
 .../dt-bindings/clock/starfive,jh7110-crg.h   | 18 +++++
 .../dt-bindings/reset/starfive,jh7110-crg.h   | 12 +++
 3 files changed, 106 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/starfive,jh7110-aoncrg.yaml

diff --git a/Documentation/devicetree/bindings/clock/starfive,jh7110-aoncrg.yaml b/Documentation/devicetree/bindings/clock/starfive,jh7110-aoncrg.yaml
new file mode 100644
index 000000000000..a3cf0570d950
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/starfive,jh7110-aoncrg.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/starfive,jh7110-aoncrg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 Always-On Clock and Reset Generator
+
+maintainers:
+  - Emil Renner Berthing <kernel@...il.dk>
+
+properties:
+  compatible:
+    const: starfive,jh7110-aoncrg
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Main Oscillator (24 MHz)
+      - description: RTC Oscillator (32.768 kHz)
+      - description: GMAC0 RMII reference
+      - description: GMAC0 RGMII RX
+      - description: STG AXI/AHB
+      - description: APB Bus
+      - description: GMAC0 GTX
+
+  clock-names:
+    items:
+      - const: osc
+      - const: rtc_osc
+      - const: gmac0_rmii_refin
+      - const: gmac0_rgmii_rxin
+      - const: stg_axiahb
+      - const: apb_bus
+      - const: gmac0_gtxclk
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/starfive,jh7110-crg.h> for valid indices.
+
+  '#reset-cells':
+    const: 1
+    description:
+      See <dt-bindings/reset/starfive,jh7110-crg.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+  - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/starfive,jh7110-crg.h>
+
+    clock-controller@...00000 {
+        compatible = "starfive,jh7110-aoncrg";
+        reg = <0x17000000 0x10000>;
+        clocks = <&osc>, <&rtc_osc>,
+                 <&gmac0_rmii_refin>, <&gmac0_rgmii_rxin>,
+                 <&syscrg JH7110_SYSCLK_STG_AXIAHB>,
+                 <&syscrg JH7110_SYSCLK_APB_BUS>,
+                 <&syscrg JH7110_SYSCLK_GMAC0_GTXCLK>;
+        clock-names = "osc", "rtc_osc", "gmac0_rmii_refin",
+                      "gmac0_rgmii_rxin", "stg_axiahb",
+                      "apb_bus", "gmac0_gtxclk";
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+    };
diff --git a/include/dt-bindings/clock/starfive,jh7110-crg.h b/include/dt-bindings/clock/starfive,jh7110-crg.h
index cda199084bcf..5e4f21ca0642 100644
--- a/include/dt-bindings/clock/starfive,jh7110-crg.h
+++ b/include/dt-bindings/clock/starfive,jh7110-crg.h
@@ -204,4 +204,22 @@
 
 #define JH7110_SYSCLK_END			193
 
+/* AONCRG clocks */
+#define JH7110_AONCLK_OSC_DIV4			0
+#define JH7110_AONCLK_APB_FUNC			1
+#define JH7110_AONCLK_GMAC0_AHB			2
+#define JH7110_AONCLK_GMAC0_AXI			3
+#define JH7110_AONCLK_GMAC0_RMII_RTX		4
+#define JH7110_AONCLK_GMAC0_TX			5
+#define JH7110_AONCLK_GMAC0_TX_INV		6
+#define JH7110_AONCLK_GMAC0_RX			7
+#define JH7110_AONCLK_GMAC0_RX_INV		8
+#define JH7110_AONCLK_OTPC_APB			9
+#define JH7110_AONCLK_RTC_APB			10
+#define JH7110_AONCLK_RTC_INTERNAL		11
+#define JH7110_AONCLK_RTC_32K			12
+#define JH7110_AONCLK_RTC_CAL			13
+
+#define JH7110_AONCLK_END			14
+
 #endif /* __DT_BINDINGS_CLOCK_STARFIVE_JH7110_CRG_H__ */
diff --git a/include/dt-bindings/reset/starfive,jh7110-crg.h b/include/dt-bindings/reset/starfive,jh7110-crg.h
index b88216a4fe40..d78e38690ceb 100644
--- a/include/dt-bindings/reset/starfive,jh7110-crg.h
+++ b/include/dt-bindings/reset/starfive,jh7110-crg.h
@@ -139,4 +139,16 @@
 
 #define JH7110_SYSRST_END			126
 
+/* AONCRG resets */
+#define JH7110_AONRST_GMAC0_AXI			0
+#define JH7110_AONRST_GMAC0_AHB			1
+#define JH7110_AONRST_IOMUX			2
+#define JH7110_AONRST_PMU_APB			3
+#define JH7110_AONRST_PMU_WKUP			4
+#define JH7110_AONRST_RTC_APB			5
+#define JH7110_AONRST_RTC_CAL			6
+#define JH7110_AONRST_RTC_32K			7
+
+#define JH7110_AONRST_END			8
+
 #endif /* __DT_BINDINGS_RESET_STARFIVE_JH7110_CRG_H__ */
-- 
2.38.1