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fc67d663aa
Per guidance from the NXP downstream kernel, if the clock is
disabled before HDMI/LCDIF probe, LCDIF will not get pixel
clock from HDMI PHY and throw an error:
[CRTC:39:crtc-2] vblank wait timed out
WARNING: CPU: 2 PID: 9 at drivers/gpu/drm/drm_atomic_helper.c:
1634 drm_atomic_helper_wait_for_vblanks.part.0+0x23c/0x260
Fix this by adding the fdcc clock to the hdmi_blk_ctrl. This
should be safe, since neither this power domain nor the dependent
HDMI and LCDIF drivers been enabled or added to the SoC device
tree yet.
According to Sandor Yu from NXP, "the FDCC clock is not for HDMITX
in desgin, but it is part of HDMI domain that needed by HDMITX.
So I think it is reasonable added it to the power domain driver."
The driver also supports two power domains which are missing from the binding
that also fix an issue with resuming from suspend.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240203165307.7806-4-aford173@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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.