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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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Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip

WARNING: multiple messages have this Message-ID (diff)
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


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2023-12-01 19:12 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-01 19:12 Heiko Stuebner [this message]
2023-12-01 19:12 ` [PATCH] arm64: defconfig: Increase SERIAL_8250_NR_UARTS to 10 Heiko Stuebner
2023-12-01 19:57 ` Florian Fainelli
2023-12-01 19:57   ` Florian Fainelli
2023-12-01 20:09   ` Francesco Dolcini
2023-12-01 20:09     ` Francesco Dolcini
2023-12-01 20:56     ` Heiko Stübner
2023-12-01 20:56       ` Heiko Stübner
2023-12-01 21:03       ` Heiko Stübner
2023-12-01 21:03         ` Heiko Stübner
2023-12-01 21:12         ` Francesco Dolcini
2023-12-01 21:12           ` Francesco Dolcini
2023-12-02 11:51       ` Francesco Dolcini
2023-12-02 11:51         ` Francesco Dolcini
2023-12-02 12:12         ` Heiko Stübner
2023-12-02 12:12           ` Heiko Stübner
2023-12-04  9:32           ` Quentin Schulz
2023-12-04  9:32             ` Quentin Schulz

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