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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org On Fri, Nov 21, 2025 at 02:21:48PM +0800, adrianhoyin.ng@altera.com wrote: > From: Adrian Ng Ho Yin > > Document sysfs attribute dev_nack_retry_cnt that controls the number of > automatic retries performed by the DesignWare I3C controller when a target > device returns a NACK Maybe other controller also support this feature, remove 'DesignWare'. Add Exist only when I3C constroller support this feature. Frank > > Signed-off-by: Adrian Ng Ho Yin > --- > Documentation/ABI/testing/sysfs-bus-i3c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c > index c812ab180ff4..d75339330067 100644 > --- a/Documentation/ABI/testing/sysfs-bus-i3c > +++ b/Documentation/ABI/testing/sysfs-bus-i3c > @@ -161,3 +161,14 @@ Contact: linux-i3c@vger.kernel.org > Description: > These directories are just symbolic links to > /sys/bus/i3c/devices/i3c-/-. > + > +What: /sys/bus/i3c/devices/i3c-/-/dev_nack_retry_count > +KernelVersion: 6.18 > +Contact: linux-i3c@vger.kernel.org > +Description: > + Expose the dev_nak_retry_count which controls the number of automatic > + retries that will be performed by the controller when the target device > + returns a NACK response. A value of 0 disables the automatic retries. A > + max value of 3 can be configured. > + > + Valid values: 0-3 > -- > 2.49.GIT > -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c