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f89263b697
When enable initcall_debug together with higher debug level below.
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=9
CONFIG_CONSOLE_LOGLEVEL_QUIET=9
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=7
The initialization of i.MX8MP PCIe PHY might be timeout failed randomly.
To fix this issue, adjust the sequence of the resets refer to the power
up sequence listed below.
i.MX8MP PCIe PHY power up sequence:
/---------------------------------------------
1.8v supply ---------/
/---------------------------------------------------
0.8v supply ---/
---\ /--------------------------------------------------
X REFCLK Valid
Reference Clock ---/ \--------------------------------------------------
-------------------------------------------
|
i_init_restn --------------
------------------------------------
|
i_cmn_rstn ---------------------
-------------------------------
|
o_pll_lock_done --------------------------
Logs:
imx6q-pcie 33800000.pcie: host bridge /soc@0/pcie@33800000 ranges:
imx6q-pcie 33800000.pcie: IO 0x001ff80000..0x001ff8ffff -> 0x0000000000
imx6q-pcie 33800000.pcie: MEM 0x0018000000..0x001fefffff -> 0x0018000000
probe of clk_imx8mp_audiomix.reset.0 returned 0 after 1052 usecs
probe of 30e20000.clock-controller returned 0 after 32971 usecs
phy phy-32f00000.pcie-phy.4: phy poweron failed --> -110
probe of 30e10000.dma-controller returned 0 after 10235 usecs
imx6q-pcie 33800000.pcie: waiting for PHY ready timeout!
dwhdmi-imx 32fd8000.hdmi: Detected HDMI TX controller v2.13a with HDCP (samsung_dw_hdmi_phy2)
imx6q-pcie 33800000.pcie: probe with driver imx6q-pcie failed with error -110
Fixes:
|
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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 reStructuredText 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.