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Message-ID: <97bb4728-fb03-bff3-1189-f2119e62598c@loongson.cn>
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!
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