Merge tag 'dt-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

[linux-2.6-microblaze.git] / Documentation / ABI / testing / sysfs-block-device

diff --git a/Documentation/ABI/testing/sysfs-block-device b/Documentation/ABI/testing/sysfs-block-device
index aa0fb50..7ac7b19 100644 (file)
--- a/Documentation/ABI/testing/sysfs-block-device
+++ b/Documentation/ABI/testing/sysfs-block-device
@@ -55,6 +55,43 @@ Date:                Oct, 2016
 KernelVersion: v4.10
 Contact:       linux-ide@vger.kernel.org
 Description:
-               (RW) Write to the file to turn on or off the SATA ncq (native
-               command queueing) support. By default this feature is turned
-               off.
+               (RW) Write to the file to turn on or off the SATA NCQ (native
+               command queueing) priority support. By default this feature is
+               turned off. If the device does not support the SATA NCQ
+               priority feature, writing "1" to this file results in an error
+               (see ncq_prio_supported).
+
+
+What:          /sys/block/*/device/sas_ncq_prio_enable
+Date:          Oct, 2016
+KernelVersion: v4.10
+Contact:       linux-ide@vger.kernel.org
+Description:
+               (RW) This is the equivalent of the ncq_prio_enable attribute
+               file for SATA devices connected to a SAS host-bus-adapter
+               (HBA) implementing support for the SATA NCQ priority feature.
+               This file does not exist if the HBA driver does not implement
+               support for the SATA NCQ priority feature, regardless of the
+               device support for this feature (see sas_ncq_prio_supported).
+
+
+What:          /sys/block/*/device/ncq_prio_supported
+Date:          Aug, 2021
+KernelVersion: v5.15
+Contact:       linux-ide@vger.kernel.org
+Description:
+               (RO) Indicates if the device supports the SATA NCQ (native
+               command queueing) priority feature.
+
+
+What:          /sys/block/*/device/sas_ncq_prio_supported
+Date:          Aug, 2021
+KernelVersion: v5.15
+Contact:       linux-ide@vger.kernel.org
+Description:
+               (RO) This is the equivalent of the ncq_prio_supported attribute
+               file for SATA devices connected to a SAS host-bus-adapter
+               (HBA) implementing support for the SATA NCQ priority feature.
+               This file does not exist if the HBA driver does not implement
+               support for the SATA NCQ priority feature, regardless of the
+               device support for this feature.