linux-kernel - Re: [PATCH v4] i2c: i2c-qcom-geni: Correct I2C TRE sequence

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Date: Mon, 12 Feb 2024 17:30:25 +0100
From: Andi Shyti <andi.shyti@...nel.org>
To: andersson@...nel.org, konrad.dybcio@...aro.org, 
 linux-arm-msm@...r.kernel.org, linux-i2c@...r.kernel.org, 
 linux-kernel@...r.kernel.org, vkoul@...nel.org, quic_bjorande@...cinc.com, 
 manivannan.sadhasivam@...aro.org, bryan.odonoghue@...aro.org, 
 dmitry.baryshkov@...aro.org, Viken Dadhaniya <quic_vdadhani@...cinc.com>
Cc: quic_msavaliy@...cinc.com, quic_vtanuku@...cinc.com
Subject: Re: [PATCH v4] i2c: i2c-qcom-geni: Correct I2C TRE sequence

Hi

On Mon, 12 Feb 2024 18:22:39 +0530, Viken Dadhaniya wrote:
> For i2c read operation in GSI mode, we are getting timeout
> due to malformed TRE basically incorrect TRE sequence
> in gpi(drivers/dma/qcom/gpi.c) driver.
> 
> I2C driver has geni_i2c_gpi(I2C_WRITE) function which generates GO TRE and
> geni_i2c_gpi(I2C_READ)generates DMA TRE. Hence to generate GO TRE before
> DMA TRE, we should move geni_i2c_gpi(I2C_WRITE) before
> geni_i2c_gpi(I2C_READ) inside the I2C GSI mode transfer function
> i.e. geni_i2c_gpi_xfer().
> 
> [...]

Applied to i2c/i2c-host-fixes on

git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux.git

Thank you,
Andi

Patches applied
===============
[1/1] i2c: i2c-qcom-geni: Correct I2C TRE sequence
      commit: 32e9b680de4b46cfe835cbc7ee3dc721f7cc65fb