922190 – feature request : ARM64 platform add PL011 serial console support

Bug 922190 - feature request : ARM64 platform add PL011 serial console support

Summary: feature request : ARM64 platform add PL011 serial console support

Status:	UNCONFIRMED

Alias:	None

Product:	Gentoo Hosted Projects
Classification:	Unclassified
Component:	genkernel (show other bugs)
Hardware:	ARM64 Linux

Importance:	Normal minor (vote)
Assignee:	Gentoo Genkernel Maintainers

URL:
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2024-01-15 23:53 UTC by Richard Liu
Modified:	2024-01-15 23:53 UTC (History)
CC List:	0 users

See Also:
Package list:
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Richard Liu 2024-01-15 23:53:57 UTC

I am Ampere Altra platform user, and the genkernel doesn't support the serial driver by default. 

but my system needs this driver. 
Ampere Altra is a generic ARM64 CPU, which major market is cloud server, not for embedded system, hope you can add this setting to genkernel default settings. 

Here is my linux kernel configuration (partical) 
#
# Non-8250 serial port support
#
CONFIG_SERIAL_AMBA_PL010=y
CONFIG_SERIAL_AMBA_PL010_CONSOLE=y
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
# CONFIG_SERIAL_EARLYCON_SEMIHOST is not set
# CONFIG_SERIAL_KGDB_NMI is not set
# CONFIG_SERIAL_MESON is not set
CONFIG_SERIAL_TEGRA_TCU=y
CONFIG_SERIAL_TEGRA_TCU_CONSOLE=y

Here is my kernel message about the PL011 driver. 

# dmesg | grep PL011 -i
[    0.000000] ACPI: SPCR: console: pl011,mmio32,0x100002600000,115200
[    0.103487] Serial: AMBA PL011 UART driver

Reproducible: Always

Actual Results:  
No serial console output.