From: Heiko Stuebner <heiko@sntech.de>
To: linux-rockchip@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org,
quentin.schulz@theobroma-systems.com, heiko@sntech.de,
Heiko Stuebner <heiko.stuebner@cherry.de>
Subject: [PATCH] arm64: defconfig: Increase SERIAL_8250_NR_UARTS to 10
Date: Fri, 1 Dec 2023 20:12:28 +0100 [thread overview]
Message-ID: <20231201191228.343230-1-heiko@sntech.de> (raw)
From: Heiko Stuebner <heiko.stuebner@cherry.de>
Boards using socs like the rk3588 can use up to 10 uarts, so the default
of 4 is way too low. Therefore increase the maximum number to 10.
SERIAL_8250_RUNTIME_UARTS on the other hand describes the number of uart
data structures to prepare before registering them. This option can stay
at its default value of 4 since for one it can be changed via a boot
parameter 8250.nr_uarts but also since
commit 9d86719f8769 ("serial: 8250: Allow using ports higher than SERIAL_8250_RUNTIME_UARTS")
the kernel can register uarts dynamically that are above the
SERIAL_8250_RUNTIME_UARTS threshold.
Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
---
arch/arm64/configs/defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index b60aa1f89343..69835dc43d24 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -448,6 +448,7 @@ CONFIG_SERIO_AMBAKMI=y
CONFIG_LEGACY_PTY_COUNT=16
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=10
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_BCM2835AUX=y
--
2.39.2
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next reply other threads:[~2023-12-01 19:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-01 19:12 Heiko Stuebner [this message]
2023-12-01 19:57 ` [PATCH] arm64: defconfig: Increase SERIAL_8250_NR_UARTS to 10 Florian Fainelli
2023-12-01 20:09 ` Francesco Dolcini
2023-12-01 20:56 ` Heiko Stübner
2023-12-01 21:03 ` Heiko Stübner
2023-12-01 21:12 ` Francesco Dolcini
2023-12-02 11:51 ` Francesco Dolcini
2023-12-02 12:12 ` Heiko Stübner
2023-12-04 9:32 ` Quentin Schulz
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