linux-kernel - Re: [PATCH V18 00/13] irqchip: Add LoongArch-related irqchip drivers

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Date:   Wed, 20 Jul 2022 20:06:10 +0800
From:   Jianmin Lv <lvjianmin@...ngson.cn>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
        loongarch@...ts.linux.dev, Hanjun Guo <guohanjun@...wei.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Huacai Chen <chenhuacai@...ngson.cn>
Subject: Re: [PATCH V18 00/13] irqchip: Add LoongArch-related irqchip drivers



On 2022/7/20 下午7:03, Marc Zyngier wrote:
> On Wed, 20 Jul 2022 11:51:19 +0100,
> Jianmin Lv <lvjianmin@...ngson.cn> wrote:
>>
>> LoongArch is a new RISC ISA, which is a bit like MIPS or RISC-V.
>> LoongArch includes a reduced 32-bit version (LA32R), a standard 32-bit
>> version (LA32S) and a 64-bit version (LA64). LoongArch use ACPI as its
>> boot protocol LoongArch-specific interrupt controllers (similar to APIC)
>> are already added in the ACPI Specification 6.5(which may be published in
>> early June this year and the board is reviewing the draft).
>>
>> Currently, LoongArch based processors (e.g. Loongson-3A5000) can only
>> work together with LS7A chipsets. The irq chips in LoongArch computers
>> include CPUINTC (CPU Core Interrupt Controller), LIOINTC (Legacy I/O
>> Interrupt Controller), EIOINTC (Extended I/O Interrupt Controller), PCH-PIC
>> (Main Interrupt Controller in LS7A chipset), PCH-LPC (LPC Interrupt Controller
>> in LS7A chipset) and PCH-MSI (MSI Interrupt Controller).
> 
> [...]
> 
> OK, that's 4 versions in quick succession, so I suggest we stop the
> bikeshedding and focus on getting this actually merged.
> 
> I'm going to stick this in a branch and throw it at -next. Any change
> will need to go on top of it, no rebasing. If anything that breaks
> cannot be fixed easily, I will drop the branch.
> 
> Thanks,
> 
> 	M.
> 

Ok, Marc, thanks very much!