linux-kernel - [PATCH] arm64: defconfig: Increase the maximum number of 8250/16550 serial ports

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Message-ID: <20211208080737.10761-1-a-govindraju@ti.com>
Date:   Wed, 8 Dec 2021 13:37:35 +0530
From:   Aswath Govindraju <a-govindraju@...com>
To:     unlisted-recipients:; (no To-header on input)
CC:     Kishon Vijay Abraham I <kishon@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Aswath Govindraju <a-govindraju@...com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Biju Das <biju.das.jz@...renesas.com>,
        Guido Günther <agx@...xcpu.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sameer Pujar <spujar@...dia.com>,
        Zenghui Yu <yuzenghui@...wei.com>, Nishanth Menon <nm@...com>,
        Saravana Kannan <saravanak@...gle.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] arm64: defconfig: Increase the maximum number of 8250/16550 serial ports

On some TI SoCs the number of UART instances used can be greater than 4.
For example in TI's J721S2 SoC, 11th instance of UART is used as console.
So, increase the maximum number of instances to 16.

Signed-off-by: Aswath Govindraju <a-govindraju@...com>
---
 arch/arm64/configs/defconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 0da6a944d5cd..adb9f1f0802d 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -409,6 +409,8 @@ CONFIG_SERIAL_8250_SHARE_IRQ=y
 CONFIG_SERIAL_8250_BCM2835AUX=y
 CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_8250_OMAP=y
+CONFIG_SERIAL_8250_NR_UARTS=16
+CONFIG_SERIAL_8250_RUNTIME_UARTS=16
 CONFIG_SERIAL_8250_MT6577=y
 CONFIG_SERIAL_8250_UNIPHIER=y
 CONFIG_SERIAL_OF_PLATFORM=y
-- 
2.17.1