linux-kernel - Re: [PATCH v3 2/3] riscv: dts: add mailbox for Sophgo CV18XX series SoC

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Message-ID: <183aa9ef25290278.6bcb31a17e34dfae.e6a8b825df767676@Jude-Air.local>
Date: Tue, 29 Apr 2025 02:44:10 +0000
From: "Junhui Liu" <junhui.liu@...moral.tech>
To: "Conor Dooley" <conor@...nel.org>
Cc: "Jassi Brar" <jassisinghbrar@...il.com>, 
	"Rob Herring" <robh@...nel.org>, 
	"Krzysztof Kozlowski" <krzk+dt@...nel.org>, 
	"Conor Dooley" <conor+dt@...nel.org>, 
	"Chen Wang" <unicorn_wang@...look.com>, 
	"Inochi Amaoto" <inochiama@...il.com>, "Yuntao Dai" <d1581209858@...e.com>, 
	"Paul Walmsley" <paul.walmsley@...ive.com>, 
	"Palmer Dabbelt" <palmer@...belt.com>, "Albert Ou" <aou@...s.berkeley.edu>, 
	"Alexandre Ghiti" <alex@...ti.fr>, <linux-kernel@...r.kernel.org>, 
	<devicetree@...r.kernel.org>, <sophgo@...ts.linux.dev>, 
	<linux-riscv@...ts.infradead.org>, "Junhui Liu" <junhui.liu@...moral.tech>
Subject: Re: [PATCH v3 2/3] riscv: dts: add mailbox for Sophgo CV18XX series
	 SoC

Hi Conor,
Thanks for you review.

The previous email accidentally lost some Cc lists :(, I'm sorry to
harass you.

On 28/04/2025 17:55, Conor Dooley wrote:
> On Mon, Apr 28, 2025 at 08:39:45PM +0800, Junhui Liu wrote:
>> From: Yuntao Dai <d1581209858@...e.com>
>> 
>> Add mailbox node for Sophgo CV18XX series SoC.
>> 
>> Signed-off-by: Yuntao Dai <d1581209858@...e.com>
>> Signed-off-by: Junhui Liu <junhui.liu@...moral.tech>
>> ---
>>  arch/riscv/boot/dts/sophgo/cv18xx.dtsi | 7 +++++++
>>  1 file changed, 7 insertions(+)
>> 
>> diff --git a/arch/riscv/boot/dts/sophgo/cv18xx.dtsi b/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
>> index c18822ec849f353bc296965d2d600a3df314cff6..f7277288f03c024039054bdc4176fc95c2c8be52 100644
>> --- a/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
>> +++ b/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
>> @@ -55,6 +55,13 @@ soc {
>>  		dma-noncoherent;
>>  		ranges;
>>  
>> +		mailbox: mailbox@...0000 {
>> +			compatible = "sophgo,cv1800b-mailbox";
>> +			reg = <0x01900000 0x1000>;
>> +			interrupts = <101 IRQ_TYPE_LEVEL_HIGH>;
>> +			#mbox-cells = <2>;
>> +		};
> 
> No user added here, is there another series in the works that adds a
> user of the mailbox?
> 

There isn't an actual user node in this specific patch. I used a
`mailbox-test` node to verify the functionality in this patch series.

The intended user for this mailbox is the `remoteproc` node. I plan to
submit the `remoteproc` driver patches once the corresponding reset
driver [1] is ready and merged.

link: https://lore.kernel.org/linux-riscv/20250209122936.2338821-1-inochiama@gmail.com/ [1]

>> +
>>  		clk: clock-controller@...2000 {
>>  			reg = <0x03002000 0x1000>;
>>  			clocks = <&osc>;
>> 
>>

-- 
Best regards,
Junhui Liu