Re: [PATCH 2/6] dt-bindings: dma: qcom-gpi: Add QSPI protocol identifier

[Jyothi Kumar Seerapu <jyothi.seerapu@oss.qualcomm.com>]

On 11/9/2026 7:12 PM, Krzysztof Kozlowski wrote:
> On Fri, Nov 06, 2026 at 08:31:20PM +0530, Jyothi Kumar Seerapu wrote:
>> Add QCOM_GPI_QSPI to identify QSPI (Quad SPI) channels in GPI DMA
>> specifiers. Its value, 9, matches the GENI serial engine firmware
>> protocol ID for QSPI.
> 
> What is GENI serial engine firmware? How does the Linux rely on it that
> we add bindings for it?

Hi Krzysztof,
GENI firmware runs on the serial engine’s programmable sequencers and 
implements protocols such as SPI and QSPI. Linux configures the engine 
and submits transfers to it.
The existing GPI DMA specifier includes a client protocol ID. Linux 
programs this ID into the DMA channel and selects the corresponding 
descriptor format. QCOM_GPI_QSPI adds the QSPI protocol encoding 9 to 
that interface.
I will clarify this in the commit description in V2.

Thanks,
JyothiKumar>
> Best regards,
> Krzysztof