linux-kernel - Re: [PATCH] arm64: defconfig: Modify number of usable 8250 uart ports

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Message-ID: <110bdc3f-6605-42b1-92f1-e4773abdd310@ti.com>
Date: Thu, 16 May 2024 15:37:20 +0530
From: Bhavya Kapoor <b-kapoor@...com>
To: <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
CC: <u-kumar1@...com>, <nfraprado@...labora.com>, <m.szyprowski@...sung.com>,
        <arnd@...db.de>, <biju.das.jz@...renesas.com>,
        <neil.armstrong@...aro.org>, <shawnguo@...nel.org>,
        <konrad.dybcio@...aro.org>, <geert+renesas@...der.be>,
        <krzysztof.kozlowski@...aro.org>, <quic_bjorande@...cinc.com>,
        <will@...nel.org>, <catalin.marinas@....com>,
        Bhavya Kapoor <b-kapoor@...com>
Subject: Re: [PATCH] arm64: defconfig: Modify number of usable 8250 uart ports


On 16/05/24 3:27 pm, Bhavya Kapoor wrote:
> Jacinto SoCs have a total of 12 serial uart ports. But only 8 out
> of these 12 uarts can be used at a time.
>
> Thus, Modify maximum number of 8250 serial uart ports which can be
> supported as well as modify how many 8250 serial uart ports which
> we can use in the runtime to 12 for all the SoCs.
>
> Signed-off-by: Bhavya Kapoor <b-kapoor@...com>
> ---

rebased to next-20240516

>   arch/arm64/configs/defconfig | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> index 57a9abe78ee4..c693736909bc 100644
> --- a/arch/arm64/configs/defconfig
> +++ b/arch/arm64/configs/defconfig
> @@ -454,7 +454,8 @@ CONFIG_SERIO_AMBAKMI=y
>   CONFIG_LEGACY_PTY_COUNT=16
>   CONFIG_SERIAL_8250=y
>   CONFIG_SERIAL_8250_CONSOLE=y
> -CONFIG_SERIAL_8250_NR_UARTS=8
> +CONFIG_SERIAL_8250_NR_UARTS=12
> +CONFIG_SERIAL_8250_RUNTIME_UARTS=12
>   CONFIG_SERIAL_8250_EXTENDED=y
>   CONFIG_SERIAL_8250_SHARE_IRQ=y
>   CONFIG_SERIAL_8250_BCM2835AUX=y