Re: [PATCH 0/4] firmware: qcom: scm: Add minidump SRAM destination support

[Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>]

On Thu, May 07, 2026 at 01:37:16PM +0530, Mukesh Ojha wrote:
> On most Qualcomm SoCs where minidump is supported, a word in always-on
> SRAM is shared between the kernel and boot firmware. Before DDR is
> initialised on the warm reset following a crash, firmware reads this
> word to decide if minidump is enabled and collect a minidump and where
> to deliver it (USB upload to a host, or save to local storage).
> 
> This series wires that mechanism into the SCM driver:
> 
>   - The SRAM word location is described via a 'sram'/'sram-names'
>     phandle pair on the SCM DT node, keeping it decoupled from the
>     driver and extensible to future SoCs.
> 
>   - A 'minidump_dest' module parameter (default: usb) selects the
>     destination.  Custom kernel_param_ops expose it as the human-
>     readable strings "usb" or "storage".
> 
>   - Add the support for Kaanapali.
> 
> Suggested-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> Link: https://lore.kernel.org/lkml/b33938e9-bb5c-4743-866d-4cdccf808a02@oss.qualcomm.com/
> Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
>

I meant this to be RFC., would fix the minor schema error if this
suggestion received well.


-Mukesh

-- 
-Mukesh Ojha