linux-kernel - Re: [PATCH v5] dmaengine: qcom: gpi: Add GPI immediate DMA support for SPI protocol

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Message-Id: <173503694298.903491.10995123391235816729.b4-ty@kernel.org>
Date: Tue, 24 Dec 2024 16:12:22 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Jyothi Kumar Seerapu <quic_jseerapu@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, dmaengine@...r.kernel.org, 
 linux-kernel@...r.kernel.org, quic_msavaliy@...cinc.com, 
 quic_vtanuku@...cinc.com
Subject: Re: [PATCH v5] dmaengine: qcom: gpi: Add GPI immediate DMA support
 for SPI protocol


On Mon, 09 Dec 2024 13:20:33 +0530, Jyothi Kumar Seerapu wrote:
> The DMA TRE(Transfer ring element) buffer contains the DMA
> buffer address. Accessing data from this address can cause
> significant delays in SPI transfers, which can be mitigated to
> some extent by utilizing immediate DMA support.
> 
> QCOM GPI DMA hardware supports an immediate DMA feature for data
> up to 8 bytes, storing the data directly in the DMA TRE buffer
> instead of the DMA buffer address. This enhancement enables faster
> SPI data transfers.
> 
> [...]

Applied, thanks!

[1/1] dmaengine: qcom: gpi: Add GPI immediate DMA support for SPI protocol
      commit: a131169dfa48d6d40da45bca67d1e4f54fa130a6

Best regards,
-- 
~Vinod