Re: [PATCH v7 16/17] doc: board: ti: k3: Add J784S4 EVM and AM69 SK documentation

[Nishanth Menon <nm@ti.com>]

On 00:45-20231220, Apurva Nandan wrote:
> TI K3 J784S4 and AM69 are new additions to the K3 SoC family.
> Add documentation about the J784S4 EVM and AM69 SK.
> 
> Signed-off-by: Dasnavis Sabiya <sabiya.d@ti.com>
> Signed-off-by: Apurva Nandan <a-nandan@ti.com>
> ---
>  doc/board/ti/j784s4_evm.rst | 303 ++++++++++++++++++++++++++++++++++++
>  doc/board/ti/k3.rst         |   1 +
>  2 files changed, 304 insertions(+)
>  create mode 100644 doc/board/ti/j784s4_evm.rst
> 
> diff --git a/doc/board/ti/j784s4_evm.rst b/doc/board/ti/j784s4_evm.rst
> new file mode 100644
> index 0000000000..bb7ed0b031
> --- /dev/null
> +++ b/doc/board/ti/j784s4_evm.rst
> @@ -0,0 +1,303 @@
[...]
> +
> +
> +More info can be found in TRM: http://www.ti.com/lit/zip/spruj52
> +
> +Platform information:
> +
> +* https://www.ti.com/tool/J784S4XEVM
> +* https://www.ti.com/tool/SK-AM69
> +
> +Boot Flow
> +---------
> +Below is the pictorial representation of boot flow:
> +
> +.. image:: img/boot_diagram_k3_current.svg
> +    :alt: K3 boot flow
> +
> +- On this platform, "TI Foundational Security (TIFS)" functions as the
"TI Foundational Security" (TIFS)

> +  security enclave master. While "Device Manager (DM)", also known as the
"Device Manager" (DM)

[...]

> +
> +Switch Setting for Boot Mode
> +----------------------------
> +
> +Boot Mode pins provide means to select the boot mode and options before the
> +device is powered up. After every POR, they are the main source to populate
> +the Boot Parameter Tables.
> +
> +Boot Mode Pins for J784S4-EVM
> +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> +
> +The following tables show some common boot modes used on J784S4 SoC platform.

Pick EVM Platform - since we are talking about evm in this context.

> +More details can be found in the Technical Reference Manual:
> +http://www.ti.com/lit/zip/spruj52 under the `Boot Mode Pins` section.
> +
> +.. list-table:: J784S4 EVM Boot Modes
> +   :widths: 16 16 16
> +   :header-rows: 1
> +
> +   * - Switch Label
> +     - SW9: 12345678
> +     - SW8: 12345678
> +
> +   * - SD
> +     - 00000000
> +     - 10000010
> +
> +   * - EMMC
> +     - 01000000
> +     - 10000000
> +
> +   * - OSPI
> +     - 01000000
> +     - 00000110
> +
> +   * - UART
> +     - 01110000
> +     - 00000000
> +
> +   * - USB DFU
> +     - 00100000
> +     - 10000000
> +
> +For SW8 and SW9, the switch state in the "ON" position = 1.
> +
> +Boot Mode Pins for AM69-SK
> +^^^^^^^^^^^^^^^^^^^^^^^^^^
> +
> +The following table show some common boot modes used on AM69-SK platform.
> +More details can be found in the User Guide for AM69-SK:
> +https://www.ti.com/lit/ug/spruj70/spruj70.pdf under the `Bootmode Settings`
> +section.
> +
> +.. list-table:: AM69 SK Boot Modes
> +   :widths: 16 16
> +   :header-rows: 1
> +
> +   * - Switch Label
> +     - SW2: 1234
> +
> +   * - SD
> +     - 0000
> +
> +   * - EMMC
> +     - 0110
> +
> +   * - OSPI
> +     - 1110
> +
> +   * - UART
> +     - 1010

Just make sure that the dip switches match up to the boot modes we
support in u-boot.

> +
> +For SW2, the switch state in the "ON" position = 1.
> +
> +Debugging U-Boot
> +----------------
> +
> +See :ref:`Common Debugging environment - OpenOCD<k3_rst_refer_openocd>`: for
> +detailed setup information.
> +
> +.. warning::
> +
> +  **Debugging the platform via JTAG requires latest OpenOCD tag**

This very vague. Use the same terminology as doc/board/ti/am62ax_sk.rst

> +
> +
> +Debugging U-Boot on J784S4-EVM and AM69-SK
> +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> +
> +.. include::  k3.rst
> +    :start-after: .. k3_rst_include_start_openocd_connect_XDS110
> +    :end-before: .. k3_rst_include_end_openocd_connect_XDS110
> +
> +To start OpenOCD and connect to J784S4-EVM or AM69-SK board, use the
> +following.
> +
> +.. code-block:: bash
> +
> +  openocd -f board/ti_j784s4evm.cfg
> diff --git a/doc/board/ti/k3.rst b/doc/board/ti/k3.rst
> index f19ee56f29..6b2faa9dc3 100644
> --- a/doc/board/ti/k3.rst
> +++ b/doc/board/ti/k3.rst
> @@ -40,6 +40,7 @@ K3 Based SoCs
>     ../beagle/j721e_beagleboneai64
>     j721e_evm
>     j721s2_evm
> +   j784s4_evm
>  
>  Boot Flow Overview
>  ------------------

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D