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

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Message-ID: <alpine.DEB.2.21.9999.1812211110260.777@viisi.sifive.com>
Date:   Fri, 21 Dec 2018 11:13:41 -0800 (PST)
From:   Paul Walmsley <paul.walmsley@...ive.com>
To:     Alistair Francis <Alistair.Francis@....com>
cc:     "Palmpalmer@...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

Hello Alistair,

On Fri, 21 Dec 2018, Alistair Francis wrote:

> Enable generic PCIe by default in the RISC-V defconfig, this allows us
> to use QEMU's PCIe support out of the box. Also remove the Xilinx PCIe
> support by default as this is rarely used and conflicts with the more
> commonly used (out of tree) MicroSemi PCIe root complex.

There are many folks working on FPGAs who use the Xilinx driver.

Also, we should not remove support for an in-tree driver because an 
out-of-tree driver conflicts.  The right approach is to get the 
out-of-tree driver upstream.

Enabling general support for PCIe in the defconfig should be fine, though.

- Paul