Re: [PATCH 0/4] i2c: tegra: Improve DMA mapping, latency, and power management

From: Jon Hunter

Date: Tue May 12 2026 - 10:46:06 EST



On 05/05/2026 11:59, Akhil R wrote:
This series addresses several aspects of the Tegra I2C driver:

- DMA mapping: Use the proper DMA device for buffer allocation to
ensure correct DMA address translation.
- Transfer latency: Disable fair arbitration on non-MCTP buses to
reduce transfer latency.
- Timing parameters: Update I2C timing values for Tegra410.
- Power management: Keep the controller available during noirq
suspend/resume phases for system dependencies.

Akhil R (4):
i2c: tegra: use dmaengine_get_dma_device() for DMA buffer allocation
i2c: tegra: Disable fair arbitration for non-MCTP buses
i2c: tegra: Update Tegra410 I2C timing parameters
i2c: tegra: Fix NOIRQ suspend/resume

drivers/i2c/busses/i2c-tegra.c | 86 +++++++++++++++++++++++-----------
1 file changed, 58 insertions(+), 28 deletions(-)


For the series ...

Reviewed-by: Jon Hunter <jonathanh@xxxxxxxxxx>

Thanks!
Jon

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