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From: Hanjun Guo <guohanjun@huawei.com>
To: Marc Zyngier <marc.zyngier@arm.com>,
	Yang Yingliang <yangyingliang@huawei.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Cc: <tglx@linutronix.de>
Subject: Re: [PATCH 3/4] irqchip/mbigen: add support for a MBIGEN generating SPIs
Date: Thu, 18 Oct 2018 19:20:56 +0800	[thread overview]
Message-ID: <df892248-4f9c-c095-df9b-885f1e650ba0@huawei.com> (raw)
In-Reply-To: <15c4ab00-3bfa-0eb8-a341-fc7a2be857f7@arm.com>

Hi Marc,

>>>>
>>> Now, the biggest question of them all: how does it work with ACPI? Last
>>> time I checked, there was no DT support for platforms using the MBIGEN.
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/hisilicon/hip07.dtsi
>> This DT describes how platform devices using the MBIGEN.
> 
> That's not how my own D05 boots. It is ACPI only. How is that going to
> work on this platform?

D05 is ACPI only so it has no dtb in the firmware, that's why we can
boot D05 without acpi=on in the boot cmdline, but if you want to
boot D05 with dtb, you could try to specify the dtb in the grub
(seems centos based):

menuentry "example" --id example{
        linux /Image-kernel root=... rdinit=...
        initrd /example.img
        devicetree /d05.dtb
}

Hope it helps.

Thanks
Hanjun


  reply	other threads:[~2018-10-18 11:21 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-16  9:15 [PATCH 0/4] add support for MBIGEN generating message based SPIs Yang Yingliang
2018-10-16  9:15 ` [PATCH 1/4] irqchip/gic-v3-mbi: fix uninitialized mbi_lock Yang Yingliang
2018-10-16  9:15 ` [PATCH 2/4] irqchip/mbigen: rename register marcros Yang Yingliang
2018-10-16  9:15 ` [PATCH 3/4] irqchip/mbigen: add support for a MBIGEN generating SPIs Yang Yingliang
2018-10-17 16:30   ` Marc Zyngier
2018-10-18  3:41     ` Yang Yingliang
2018-10-18  8:55       ` Marc Zyngier
2018-10-18 11:20         ` Hanjun Guo [this message]
2018-10-18 11:56           ` Marc Zyngier
2018-10-18 12:54             ` Hanjun Guo
2018-10-16  9:15 ` [PATCH 4/4] dt-bindings/irqchip/mbigen: add example of MBIGEN generate SPIs Yang Yingliang

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