linux-kernel - Re: [PATCH v4 17/19] riscv: dts: starfive: Add initial StarFive JH7110 device tree

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Date:   Thu, 23 Feb 2023 15:16:51 +0800
From:   Hal Feng <hal.feng@...rfivetech.com>
To:     Conor Dooley <conor@...nel.org>
CC:     <linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, Stephen Boyd <sboyd@...nel.org>,
        "Michael Turquette" <mturquette@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Ben Dooks <ben.dooks@...ive.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        "Emil Renner Berthing" <emil.renner.berthing@...onical.com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 17/19] riscv: dts: starfive: Add initial StarFive
 JH7110 device tree

On Tue, 21 Feb 2023 17:03:52 +0000, Conor Dooley wrote:
> On Tue, Feb 21, 2023 at 10:46:43AM +0800, Hal Feng wrote:
> 
>> +		S7_0: cpu@0 {
>> +			compatible = "sifive,s7", "riscv";
>> +			reg = <0>;
>> +			d-cache-block-size = <64>;
>> +			d-cache-sets = <64>;
>> +			d-cache-size = <8192>;
>> +			d-tlb-sets = <1>;
>> +			d-tlb-size = <40>;
>> +			device_type = "cpu";
>> +			i-cache-block-size = <64>;
>> +			i-cache-sets = <64>;
>> +			i-cache-size = <16384>;
>> +			i-tlb-sets = <1>;
>> +			i-tlb-size = <40>;
>> +			mmu-type = "riscv,sv39";
>> +			next-level-cache = <&ccache>;
>> +			riscv,isa = "rv64imac_zicsr_zba_zbb";
> 
> I still think that adding just zicsr here is pointless. If you're going
> to be specific, why not also mention that you have zifencei too?

I would like to remove "_zicsr" in the next version. Thanks.

> 
>> +			tlb-split;
>> +			status = "disabled";
>> +
>> +			cpu0_intc: interrupt-controller {
>> +				compatible = "riscv,cpu-intc";
>> +				interrupt-controller;
>> +				#interrupt-cells = <1>;
>> +			};
>> +		};
> 
> Rest of this looks fine to me though, thanks for adding the s7
> compatible and zba/zbb :)

Thanks for your review. :)

Best regards,
Hal