From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: How kernel derive irq number for particular irq line
Date: Mon, 25 Jun 2018 08:50:20 +0800 [thread overview]
Message-ID: <20180625005020.GA23869@kroah.com> (raw)
In-Reply-To: <CAHJZ6qFmUOSXvqxAR9bt4c+0VK4B7a75bijZnJeL2WqhEN70Og@mail.gmail.com>
On Mon, Jun 25, 2018 at 12:17:06AM +0530, Abhinav Misra wrote:
> Hi Guys,
>
> I want to know how the irq number is derived in linux kernel.
It all depends on your platform. It either comes from the firmware/bios
or it is in the device tree information. The kernel itself doesn't know
this information, it has to be told that from an external source.
Hope this helps,
greg k-h
next prev parent reply other threads:[~2018-06-25 0:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-24 18:47 How kernel derive irq number for particular irq line Abhinav Misra
2018-06-25 0:50 ` Greg KH [this message]
2018-06-25 9:03 ` priyaranjan
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