Re: [PATCH v8 1/2] dmaengine: qcom: gpi: Add GPI Block event interrupt support

From: Andi Shyti
Date: Fri Oct 03 2025 - 14:48:41 EST


Hi Vinod,

On Thu, Sep 25, 2025 at 05:30:34PM +0530, Jyothi Kumar Seerapu wrote:
> From: Jyothi Kumar Seerapu <quic_jseerapu@xxxxxxxxxxx>
>
> GSI hardware generates an interrupt for each transfer completion.
> For multiple messages within a single transfer, this results in
> N interrupts for N messages, leading to significant software
> interrupt latency.
>
> To mitigate this latency, utilize Block Event Interrupt (BEI) mechanism.
> Enabling BEI instructs the GSI hardware to prevent interrupt generation
> and BEI is disabled when an interrupt is necessary.
>
> Large I2C transfer can be divided into chunks of messages internally.
> Interrupts are not expected for the messages for which BEI bit set,
> only the last message triggers an interrupt, indicating the completion of
> N messages. This BEI mechanism enhances overall transfer efficiency.
>
> Signed-off-by: Jyothi Kumar Seerapu <quic_jseerapu@xxxxxxxxxxx>

Ping on this patch. I'm sorry, but going to take it in the next
few days if I don't hear from you, this patch has been waiting
for a very long time.

Thanks,
Andi