lkml.org 
[lkml]   [2020]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v10 43/55] dt-bindings: input: atmel: support to set max bytes transferred
From
Date
07.04.2020 12:27, Wang, Jiada пишет:
..
>> Is this a software (firmware) limitation which varies from version to
>> version?
>>
>
> the timeout issue trying to be addressed in this patch is from software,
> one of our board a Serializer/Deserializer bridge exists between the SoC
> (imx6) and the Atmel touch controller.
> imx6 i2c controller driver has a timeout value(100ms) for each i2c
> transaction,
> Large i2c read transaction failed to complete within this timeout value
> and therefore imx6 i2c controller driver aborts the transaction
> and returns failure.
>
> Therefore this patch was created to split the large i2c transaction into
> smaller chunks which can complete
> within the timeout defined by i2c controller driver.

Isn't it possible to use the max_read/write_len of the generic struct
i2c_adapter_quirks for limiting the transfer size?

BTW, it looks like the i.MX I2C driver doesn't specify the
i2c_adapter_quirks, which probably needs to be fixed.

\
 
 \ /
  Last update: 2020-04-07 16:47    [W:0.148 / U:2.668 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site