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Date:   Tue, 26 Oct 2021 16:57:08 -0700 (PDT)
Subject:     Re: [PATCH 1/1] riscv: defconfig: enable DRM_NOUVEAU
In-Reply-To: <20211012164658.81894-1-heinrich.schuchardt@canonical.com>
CC:     Paul Walmsley <paul.walmsley@sifive.com>, aou@eecs.berkeley.edu,
        Anup Patel <Anup.Patel@wdc.com>, axboe@kernel.dk,
        sagar.kadam@sifive.com, Atish Patra <Atish.Patra@wdc.com>,
        linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
        heinrich.schuchardt@canonical.com
From:   Palmer Dabbelt <palmer@dabbelt.com>
To:     heinrich.schuchardt@canonical.com
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On Tue, 12 Oct 2021 09:46:58 PDT (-0700), heinrich.schuchardt@canonical.com wrote:
> Both RADEON and NOUVEAU graphics cards are supported on RISC-V. Enabling
> the one and not the other does not make sense.
>
> As typically at most one of RADEON, NOUVEAU, or VIRTIO GPU support will be
> needed DRM drivers should be compiled as modules.

Do you have an nVidia card that works on real hardware?  Last I checked 
was a while ago, but they weren't working at the time (IIRC it was 
something to do with PCIe addressing, but it was a hardware limitation 
so I don't remember exactly how it all fits together).

If they work then I'm happy to flip them on.

> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
> ---
>  arch/riscv/configs/defconfig | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
> index 4ebc80315f01..c252fd5706d2 100644
> --- a/arch/riscv/configs/defconfig
> +++ b/arch/riscv/configs/defconfig
> @@ -72,9 +72,10 @@ CONFIG_GPIOLIB=y
>  CONFIG_GPIO_SIFIVE=y
>  # CONFIG_PTP_1588_CLOCK is not set
>  CONFIG_POWER_RESET=y
> -CONFIG_DRM=y
> -CONFIG_DRM_RADEON=y
> -CONFIG_DRM_VIRTIO_GPU=y
> +CONFIG_DRM=m
> +CONFIG_DRM_RADEON=m
> +CONFIG_DRM_NOUVEAU=m
> +CONFIG_DRM_VIRTIO_GPU=m
>  CONFIG_FRAMEBUFFER_CONSOLE=y
>  CONFIG_USB=y
>  CONFIG_USB_XHCI_HCD=y