Re: [PATCH v2 7/7] doc: ti: k3: Add section for DDR configuration

[Romain Naour <romain.naour@smile.fr>]

Hello Neha, All,

Le 03/11/2025 à 08:10, Neha Malcom Francis a écrit :
> Add a concise section for DDR configuration pointing to the public tool
> that can be used to generate the configuration DTSI.
> 
> Signed-off-by: Neha Malcom Francis <n-francis@ti.com>
> ---
> Changes since v1:
> - new patch
> 
>  doc/board/ti/k3.rst | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/doc/board/ti/k3.rst b/doc/board/ti/k3.rst
> index 01fb9411688..de66b830703 100644
> --- a/doc/board/ti/k3.rst
> +++ b/doc/board/ti/k3.rst
> @@ -649,6 +649,17 @@ Refer (:ref:`U-boot ARMV8 build <k3_rst_include_start_build_steps_uboot>`)
>     This will need to be explicitly disabled by changing the boot_targets to
>     disallow fallback during testing.
>  
> +DDR Configuration
> +-----------------
> +
> +The K3 DDRSS driver (drivers/ram/k3-ddrss/k3-ddrss.c) configures the DDR during
> +the R5 SPL stage. The driver utilizes an auto-generated configuration file
> +containing necessary settings for the DDR. It configures the frequency, timing
> +parameters, training algorithms etc. for DDR initialization. The configuration
> +DTSI can be generated using the `Sysconfig tool <https://dev.ti.com/sysconfig>`_
> +and selecting the software product as "DDR Configuration for \*" as well as the
> +required device.

Thanks for promoting the new K3 DDRSS configuration tool (v0.12.00)!
Until recently, I was still using the old spreadsheet (K3 DDRSS v0.10.0) from
outdated application note [1].

The FAQ post [2] is really useful for custom board DDR configuration but
somewhat difficult to find/notice on e2e forum.

Note: The K3 DDRSS sysconfig based tool can even be used offline [3].

[1] https://www.ti.com/lit/an/spracu8b/spracu8b.pdf
[2]
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1482402/faq-tda4vm-tda4x-dra8x-am68x-am69x-lpddr4-topics
[3]
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1378443/processor-sdk-j784s4-tda4ah-offline-ddr-configuration-tool---latest-version/5269621

Reviewed-by: Romain Naour <romain.naour@smile.fr>

Best regards,
Romain


> +
>  Saving environment
>  ------------------
>