Re: [RFC PATCH 4/5] irqchip: RISC-V Local Interrupt Controller Driver

From: Christoph Hellwig
Date: Mon Sep 10 2018 - 09:35:57 EST


On Thu, Sep 06, 2018 at 05:23:07PM +0530, Anup Patel wrote:
> > And we reject that driver approach for good reason and are now
> > doing the architectualy low-level irq handling in common code
> > without any need whatsover to duplicate information in the
> > privileged spec in DT.
>
> In other words, the whole idea of separate RISCV local interrupt
> controller driver was dropped due duplicate information in privilege
> spec DT ??

No. We came to the conflusion that a few registers on a cpu
that allow enabling/disabling local vs external vs timer intterupts
aren't worth writing an irqchip (or DT entries) for.