lkml.org 
[lkml]   [2022]   [Jul]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 5/9] dt_bindings: rs485: Correct delay values
On Sun, 03 Jul 2022 19:00:35 +0200, Lino Sanfilippo wrote:
> From: Lino Sanfilippo <l.sanfilippo@kunbus.com>
>
> Currently the documentation claims that a maximum of 1000 msecs is allowed
> for RTS delays. However nothing actually checks the values read from device
> tree/ACPI and so it is possible to set much higher values.
>
> There is already a maximum of 100 ms enforced for RTS delays that are set
> via the uart TIOCSRS485 ioctl. To be consistent with that use the same
> limit for DT/ACPI values.
>
> Although this change is visible to userspace the risk of breaking anything
> when reducing the max delays from 1000 to 100 ms should be very low, since
> 100 ms is already a very high maximum for delays that are usually rather in
> the usecs range.
>
> Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
> ---
> Documentation/devicetree/bindings/serial/rs485.yaml | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>

Acked-by: Rob Herring <robh@kernel.org>

\
 
 \ /
  Last update: 2022-07-05 22:39    [W:0.126 / U:1.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site