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fix: Add steps to enable touch on Microtips OLDI on SK-AM62B-P1 #105

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Dec 12, 2024
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fix: Add steps to enable touch on Microtips OLDI on SK-AM62B-P1 #105

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48 changes: 38 additions & 10 deletions source/linux/How_to_Guides/Target/How_to_enable_Microtips_LVDS_Panel.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,11 @@ is supported on platforms:
- `AM62X SK <https://www.ti.com/tool/SK-AM62>`__
- `AM62X LP SK <https://www.ti.com/tool/SK-AM62-LP>`__
- `AM62P SK <https://www.ti.com/tool/SK-AM62P-LP>`__
- `AM62B SK <https://www.ti.com/tool/SK-AM62B>`__
- `AM62B-P1 <https://www.ti.com/tool/SK-AM62B-P1>`__

**Steps to enable OLDI Panel DT overlay:**
Steps to enable OLDI Panel DT overlay
-------------------------------------

#. Follow the :ref:`How to enable DT overlays in linux <howto_dt_overlays>` guide for steps on building
and adding the overlay to your SD card. Make sure the correct overlay file has been appended
Expand All @@ -33,25 +36,50 @@ is supported on platforms:
+---------------+---------------------------------------------+


**Steps to enable Touch on the Microtips Panel on AM625 SK EVM:**
Steps to enable Touch on the Microtips Panel on AM625 SK EVM
------------------------------------------------------------

**Note**: The following steps are only applicable on AM625 SK EVM revision E3 board
AM62X SK E3 revision
^^^^^^^^^^^^^^^^^^^^

#. Power off the LVDS board by disconnecting the 12V barrel jack (do not power off the SK EVM)
#. Run the following commands from the Linux prompt:

.. code-block:: bash
.. code-block:: console

root@am62xx-evm:~# modprobe -r ili210x
root@am62xx-evm:~# i2ctransfer -f -y 0 w3@0x3f 0x09 0x1 0x0e
root@am62xx-evm:~# i2ctransfer -f -y 0 w6@0x3f 0x08 0x04 0x47 0x50 0x73 0x68
root@am62xx-evm:~# i2ctransfer -f -y 0 w1@0x3f 0x72 r9
root@am62xx-evm:~# modprobe -r ili210x
root@am62xx-evm:~# i2ctransfer -f -y 0 w3@0x3f 0x09 0x1 0x0e
root@am62xx-evm:~# i2ctransfer -f -y 0 w6@0x3f 0x08 0x04 0x47 0x50 0x73 0x68
root@am62xx-evm:~# i2ctransfer -f -y 0 w1@0x3f 0x72 r9

#. Power on the LVDS board
#. Run the following command:

.. code-block:: bash
.. code-block:: console

root@am62xx-evm:~# modprobe ili210x
root@am62xx-evm:~# modprobe ili210x

After re-initializing the module, the touch IC should now be registered as an input and touch should be functional.

AM62B SK & AM62B-P1
^^^^^^^^^^^^^^^^^^^

#. Run the following command

.. code-block:: console

root@am62xx-evm:~# modprobe -r ili210x

#. Power off the LVDS panel by disconnecting the 12V barrel jack (do not power off the SK EVM)
#. Power on the LVDS panel
#. Run the following command

.. code-block:: console

root@am62xx-evm:~# modprobe ili210x

After re-initializing the module, the touch IC should now be registered as an input and touch should be functional.

.. note::

``i2ctransfer`` not required for AM62B SK & AM62B-P1
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