Dan Johansen 78aedee18a arm64: dts: rockchip: Lower SD card speed on rk3399 Pinebook Pro
MicroSD card slot in the Pinebook Pro is located on a separate
daughterboard that's connected to the mainboard using a rather
long flat cable.  The resulting signal degradation causes many
perfectly fine microSD cards not to work in the Pinebook Pro,
which is a common source of frustration among the owners.

Changing the mode and lowering the speed reportedly fixes this
issue and makes many microSD cards work as expected.

Co-developed-by: Dragan Simic <dragan.simic@gmail.com>
Signed-off-by: Dragan Simic <dragan.simic@gmail.com>
Tested-by: JR Gonzalez <jrg@scientiam.org>
Signed-off-by: Dan Johansen <strit@manjaro.org>
Link: https://lore.kernel.org/r/20230305104730.15849-1-strit@manjaro.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2023-03-07 17:57:46 +01:00
2023-03-05 10:49:37 -08:00
2022-09-28 09:02:20 +02:00
2023-03-05 14:52:03 -08:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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