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Date: Thu, 25 Jan 2024 20:15:32 +0800
From: Chen Wang <unicorn_wang@...look.com>
To: AnnanLiu <annan.liu.xdu@...look.com>, chao.wei@...hgo.com,
 robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org
Cc: paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu,
 devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] riscv: dts: sophgo: add watchdog dt node for CV1800

hi, Annan, I see another email with same title, any difference between 
them two? Which one you want us to review? Maybe you should void one of 
them.

On 2024/1/25 17:46, AnnanLiu wrote:
> Add the watchdog device tree node to cv1800 SoC.
>
> Signed-off-by: AnnanLiu <annan.liu.xdu@...look.com>
> ---
> This patch depends on the clk driver and reset driver.
> Clk driver link:
> https://lore.kernel.org/all/IA1PR20MB49539CDAD9A268CBF6CA184BBB9FA@IA1PR20MB4953.namprd20.prod.outlook.com/
> Reset driver link:
> https://lore.kernel.org/all/20231113005503.2423-1-jszhang@kernel.org/
>
> Changes since v1:
> - Change the name of the watchdog from watchdog0 to watchdog.
> - Change the status of watchdog.
> v1 link:
> https://lore.kernel.org/all/DM6PR20MB23160B8499CC2BFDAE6FCACDAB9EA@DM6PR20MB2316.namprd20.prod.outlook.com/
>
>
>   arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts |  4 ++++
>   arch/riscv/boot/dts/sophgo/cv1800b.dtsi          | 16 ++++++++++++++++
>   2 files changed, 20 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
> index 3af9e34b3bc7..75469161bfff 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
> +++ b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
> @@ -36,3 +36,7 @@ &osc {
>   &uart0 {
>   	status = "okay";
>   };
> +
> +&watchdog {
> +	status = "okay";
> +};
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> index aec6401a467b..03ca32cd37b6 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> @@ -1,6 +1,7 @@
>   // SPDX-License-Identifier: (GPL-2.0 OR MIT)
>   /*
>    * Copyright (C) 2023 Jisheng Zhang <jszhang@...nel.org>
> + * Copyright (C) 2024 Annan Liu <annan.liu.xdu@...look.com>
>    */
>   
>   #include <dt-bindings/interrupt-controller/irq.h>
> @@ -103,6 +104,21 @@ uart4: serial@...0000 {
>   			status = "disabled";
>   		};
>   
> +		watchdog: watchdog@...0000{
> +			compatible = "snps,dw-wdt";
> +			reg = <0x3010000 0x100>;
> +			interrupts = <58 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&pclk>;
> +			resets = <&rst RST_WDT>;
> +			status = "disabled";
> +		};
> +
> +		pclk: pclk {
> +			#clock-cells = <0>;
> +			compatible = "fixed-clock";
> +			clock-frequency = <25000000>;
> +		};
> +
>   		plic: interrupt-controller@...00000 {
>   			compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
>   			reg = <0x70000000 0x4000000>;

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