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Message-ID:
 <IA1PR20MB49531613C8AA14C065D1B59EBB362@IA1PR20MB4953.namprd20.prod.outlook.com>
Date: Mon, 25 Mar 2024 08:58:12 +0800
From: Inochi Amaoto <inochiama@...look.com>
To: AnnanLiu <annan.liu.xdu@...look.com>, chao.wei@...hgo.com, 
	unicorn_wang@...look.com, robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org, 
	conor+dt@...nel.org
Cc: Inochi Amaoto <inochiama@...look.com>, 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

On Thu, Jan 25, 2024 at 05:46:40PM +0800, 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>;
> +		};
> +

Remove this stub clock and use osc instead.

Also, please rebase to v6.9-rc1.

>  		plic: interrupt-controller@...00000 {
>  			compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
>  			reg = <0x70000000 0x4000000>;
> -- 
> 2.34.1
> 

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