linux-kernel - Re: [PATCH] RISC-V: defconfig: Enable Generic PCIE by default

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Message-ID: <c51c125f40a12a3afdd8272bbbf0670673a15349.camel@wdc.com>
Date:   Fri, 21 Dec 2018 22:11:54 +0000
From:   Alistair Francis <Alistair.Francis@....com>
To:     "paul.walmsley@...ive.com" <paul.walmsley@...ive.com>
CC:     "palmer@...ive.com" <palmer@...ive.com>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] RISC-V: defconfig: Enable Generic PCIE by default

On Fri, 2018-12-21 at 11:27 -0800, Paul Walmsley wrote:
> On Fri, 21 Dec 2018, Alistair Francis wrote:
> 
> > When the MicroSemi driver does eventually go upstream this will
> > probably have to be discussed though as either the config or device
> > tree will need to be edited to ensure only one PCIe device is
> > present.
> 
> The right way to do that is to have two separate DT files: one for
> the 
> HiFive-U board alone; the other for the HiFive-U plus the expansion
> board 
> combo.  There shouldn't be any problems with keeping both drivers
> enabled 
> in the defconfig.

Agreed, the only problem is that the device tree comes from the boards
firmware at the moment.

Alistair

> 
> 
> - Paul