linux-kernel - [PATCH v4 3/4] riscv: dts: sophgo: add clock generator for Sophgo CV1800 series SoC

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Date: Mon, 18 Dec 2023 12:04:05 +0800
From: Inochi Amaoto <inochiama@...look.com>
To: Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chao Wei <chao.wei@...hgo.com>,
	Chen Wang <unicorn_wang@...look.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Inochi Amaoto <inochiama@...look.com>
Cc: Jisheng Zhang <jszhang@...nel.org>,
	Liu Gui <kenneth.liu@...hgo.com>,
	Emil Renner Berthing <emil.renner.berthing@...onical.com>,
	Jingbao Qiu <qiujingbao.dlmu@...il.com>,
	dlan@...too.org,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: [PATCH v4 3/4] riscv: dts: sophgo: add clock generator for Sophgo CV1800 series SoC

Add clock generator node for CV1800B and CV1812H.

Until now, It uses DT override to minimize duplication. This may
change in the future. See the last link for the discussion on
maintaining DT of CV1800 series.

Signed-off-by: Inochi Amaoto <inochiama@...look.com>
Link: https://github.com/milkv-duo/duo-files/blob/main/hardware/CV1800B/CV1800B-CV1801B-Preliminary-Datasheet-full-en.pdf
Link: https://lore.kernel.org/all/IA1PR20MB495373158F3B690EF3BF2901BB8BA@IA1PR20MB4953.namprd20.prod.outlook.com/
---
 arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 4 ++++
 arch/riscv/boot/dts/sophgo/cv1812h.dtsi | 4 ++++
 arch/riscv/boot/dts/sophgo/cv18xx.dtsi  | 6 ++++++
 3 files changed, 14 insertions(+)

diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
index 165e9e320a8c..baf641829e72 100644
--- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
@@ -16,3 +16,7 @@ &plic {
 &clint {
 	compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
 };
+
+&clk {
+	compatible = "sophgo,cv1800-clk";
+};
diff --git a/arch/riscv/boot/dts/sophgo/cv1812h.dtsi b/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
index 9a375935b00c..83243c918204 100644
--- a/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
@@ -21,3 +21,7 @@ &plic {
 &clint {
 	compatible = "sophgo,cv1812h-clint", "thead,c900-clint";
 };
+
+&clk {
+	compatible = "sophgo,cv1810-clk";
+};
diff --git a/arch/riscv/boot/dts/sophgo/cv18xx.dtsi b/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
index 2d6f4a4b1e58..6ea1b2784db9 100644
--- a/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
@@ -53,6 +53,12 @@ soc {
 		dma-noncoherent;
 		ranges;

+		clk: clock-controller@...2000 {
+			reg = <0x03002000 0x1000>;
+			clocks = <&osc>;
+			#clock-cells = <1>;
+		};
+
 		gpio0: gpio@...0000 {
 			compatible = "snps,dw-apb-gpio";
 			reg = <0x3020000 0x1000>;
--
2.43.0