linux-kernel - Re: [PATCH v6 3/4] riscv: dts: sophgo: add clock generator for Sophgo CV1800 series SoC

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Date: Wed, 31 Jan 2024 11:44:37 +0800
From: Chen Wang <unicorn_wang@...look.com>
To: Inochi Amaoto <inochiama@...look.com>,
 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>,
 Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt
 <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>
Cc: Jisheng Zhang <jszhang@...nel.org>, Liu Gui <kenneth.liu@...hgo.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: Re: [PATCH v6 3/4] riscv: dts: sophgo: add clock generator for Sophgo
 CV1800 series SoC


On 2024/1/14 12:17, Inochi Amaoto wrote:
> 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/6f4e9b8ecb459e017cca1a8df248a19ca70837a3/duo/datasheet/CV1800B-CV1801B-Preliminary-Datasheet-full-en.pdf
> Link: https://lore.kernel.org/all/IA1PR20MB495373158F3B690EF3BF2901BB8BA@IA1PR20MB4953.namprd20.prod.outlook.com/

Reviewed-by: Chen Wang <unicorn_wang@...look.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 3e7a942f5c1a..7fa4c1e2d1da 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
> @@ -22,3 +22,7 @@ &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
>