linux-kernel - Re: [PATCH v5 09/13] PCI: mediatek: allow selecting controller driver for airoha arch

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Date:   Mon, 29 Nov 2021 17:55:49 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Felix Fietkau <nbd@....name>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Matthias Brugger <matthias.bgg@...il.com>, john@...ozen.org,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v5 09/13] PCI: mediatek: allow selecting controller
 driver for airoha arch

On Mon, Nov 29, 2021 at 04:33:25PM +0100, Felix Fietkau wrote:
> The EN7523 SoC uses the same controller as MT7622

If you have occasion to post a v6, please:

  - Update the subject line so it starts with a capital letter,
    capitalizes "Airoha" appropriately, and includes "EN7523" as your
    DT patch does, and moves those close to the beginning, e.g.,

      PCI: mediatek: Allow selection for Airoha EN7532

  - Update the commit log so it says what this patch does.  It's OK to
    repeat the subject line.  Add a period at end.

I expected a patch to add "airoha,en7523-pcie" to
drivers/pci/controller/pcie-mediatek.c.  Did I miss it?

Oh, I see your arch/arm/boot/dts/en7523.dtsi has:

  +       pcie0: pcie@...91000 {
  +               compatible = "airoha,en7523-pcie", "mediatek,mt7622-pcie";

so I guess you just rely on the existing "mediatek,mt7622-pcie" string
in the driver?

> Signed-off-by: Felix Fietkau <nbd@....name>
> ---
>  drivers/pci/controller/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
> index 93b141110537..f1342059c2a3 100644
> --- a/drivers/pci/controller/Kconfig
> +++ b/drivers/pci/controller/Kconfig
> @@ -233,7 +233,7 @@ config PCIE_ROCKCHIP_EP
>  
>  config PCIE_MEDIATEK
>  	tristate "MediaTek PCIe controller"
> -	depends on ARCH_MEDIATEK || COMPILE_TEST
> +	depends on ARCH_AIROHA || ARCH_MEDIATEK || COMPILE_TEST
>  	depends on OF
>  	depends on PCI_MSI_IRQ_DOMAIN
>  	help
> -- 
> 2.30.1
>