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docs(linux): U-Boot: Add a known issue #56

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docs(linux): U-Boot: Add a known issue #56

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1 change: 1 addition & 0 deletions source/devices/AM64X/linux/Release_Specific_Release_Notes.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -212,6 +212,7 @@ Known Issues
:header: "Record ID", "Title", "Platform", "Workaround"
:widths: 5, 10, 50, 35

"LCPD-42226","am64xx-evm : OSPI NOR boot fails","am64xx-hsevm","Refer :ref:`here <u-boot-introduction-qspi-ug>`"
"LCPD-38695","Documentation: Kernel_Drivers/Network & PRU-ICSS sections doesn't follow sphinx convention","am64xx-evm",""
"LCPD-38689","Linux benchmarks: add context to Boot-time measurement","am62axx_sk-fs,am62pxx_sk-fs,am62xx_lp_sk-fs,am64xx-evm,am654x-evm",""
"LCPD-38688","RT Linux benchmarks: add histogram for cyclic test","am62axx_sk-fs,am62pxx_sk-fs,am62xx_lp_sk-fs,am62xx_sk-fs,am64xx-evm",""
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28 changes: 28 additions & 0 deletions source/linux/Foundational_Components/U-Boot/UG-QSPI.rst
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Expand Up @@ -23,6 +23,34 @@ controllers work only in master mode.
| AM64x | OSPI NOR | :file:`drivers/spi/cadence_qspi.c` |
+------------+------------+------------------------------------+

.. important::

The BCDMA channel[0] is being allocated for read during OSPI NOR boot.
Currently, OSPI NOR boot fails in AM64x-EVM as the 'main_bcdma' node
is not passed in FDT to the early boot stage. Hence, user can apply the
following patch to add 'bootph-all' property to 'main_bcdma' node.

This issue (Record ID: LCPD-42226) has been listed in the :ref:`Known Issues <known-issues>`

.. code-block:: diff

diff --git a/arch/arm/dts/k3-am642-evm-u-boot.dtsi b/arch/arm/dts/k3-am642-evm-u-boot.dtsi
index 5d7cbe0477c3..e30e6cd63dd9 100644
--- a/arch/arm/dts/k3-am642-evm-u-boot.dtsi
+++ b/arch/arm/dts/k3-am642-evm-u-boot.dtsi
@@ -121,6 +121,10 @@
bootph-all;
};

+&main_bcdma {
+ bootph-all;
+};
+
&main_pktdma {
bootph-all;
};


.. ifconfig:: CONFIG_part_variant in ('AM62X')

+-------------+------------+------------------------------------+
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