Merge tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the big set of char/misc and other small driver subsystem
  updates for 5.18-rc1.

  Included in here are merges from driver subsystems which contain:

   - iio driver updates and new drivers

   - fsi driver updates

   - fpga driver updates

   - habanalabs driver updates and support for new hardware

   - soundwire driver updates and new drivers

   - phy driver updates and new drivers

   - coresight driver updates

   - icc driver updates

  Individual changes include:

   - mei driver updates

   - interconnect driver updates

   - new PECI driver subsystem added

   - vmci driver updates

   - lots of tiny misc/char driver updates

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (556 commits)
  firmware: google: Properly state IOMEM dependency
  kgdbts: fix return value of __setup handler
  firmware: sysfb: fix platform-device leak in error path
  firmware: stratix10-svc: add missing callback parameter on RSU
  arm64: dts: qcom: add non-secure domain property to fastrpc nodes
  misc: fastrpc: Add dma handle implementation
  misc: fastrpc: Add fdlist implementation
  misc: fastrpc: Add helper function to get list and page
  misc: fastrpc: Add support to secure memory map
  dt-bindings: misc: add fastrpc domain vmid property
  misc: fastrpc: check before loading process to the DSP
  misc: fastrpc: add secure domain support
  dt-bindings: misc: add property to support non-secure DSP
  misc: fastrpc: Add support to get DSP capabilities
  misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP
  misc: fastrpc: separate fastrpc device from channel context
  dt-bindings: nvmem: brcm,nvram: add basic NVMEM cells
  dt-bindings: nvmem: make "reg" property optional
  nvmem: brcm_nvram: parse NVRAM content into NVMEM cells
  nvmem: dt-bindings: Fix the error of dt-bindings check
  ...

1 files changed, 141 insertions, 0 deletions

diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
index f5724bb5b462..c3fec3c835af 100644
--- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
+++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
@@ -113,3 +113,144 @@ Description:
 		    # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
 
 Users:		Xilinx
+
+What:		/sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+Date:		Feb 2022
+KernelVersion:	5.18
+Contact:	"Ronak Jain" <ronak.jain@xilinx.com>
+Description:
+		This sysfs interface allows user to configure features at
+		runtime. The user can enable or disable features running at
+		firmware as well as the user can configure the parameters of
+		the features at runtime. The supported features are over
+		temperature and external watchdog. Here, the external watchdog
+		is completely different than the /dev/watchdog as the external
+		watchdog is running on the firmware and it is used to monitor
+		the health of firmware not APU(Linux). Also, the external
+		watchdog is interfaced outside of the zynqmp soc.
+
+		The supported config ids are for the feature configuration is,
+		1. PM_FEATURE_OVERTEMP_STATUS = 1, the user can enable or
+		disable the over temperature feature.
+		2. PM_FEATURE_OVERTEMP_VALUE = 2, the user can configure the
+		over temperature limit in Degree Celsius.
+		3. PM_FEATURE_EXTWDT_STATUS = 3, the user can enable or disable
+		the external watchdog feature.
+		4. PM_FEATURE_EXTWDT_VALUE = 4, the user can configure the
+		external watchdog feature.
+
+		Usage:
+
+		Select over temperature config ID to enable/disable feature
+		# echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+
+		Check over temperature config ID is selected or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		The expected result is 1.
+
+		Select over temperature config ID to configure OT limit
+		# echo 2 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+
+		Check over temperature config ID is selected or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		The expected result is 2.
+
+		Select external watchdog config ID to enable/disable feature
+		# echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+
+		Check external watchdog config ID is selected or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		The expected result is 3.
+
+		Select external watchdog config ID to configure time interval
+		# echo 4 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+
+		Check external watchdog config ID is selected or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		The expected result is 4.
+
+Users:		Xilinx
+
+What:		/sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+Date:		Feb 2022
+KernelVersion:	5.18
+Contact:	"Ronak Jain" <ronak.jain@xilinx.com>
+Description:
+		This sysfs interface allows to configure features at runtime.
+		The user can enable or disable features running at firmware.
+		Also, the user can configure the parameters of the features
+		at runtime. The supported features are over temperature and
+		external watchdog. Here, the external watchdog is completely
+		different than the /dev/watchdog as the external watchdog is
+		running on the firmware and it is used to monitor the health
+		of firmware not APU(Linux). Also, the external watchdog is
+		interfaced outside of the zynqmp soc.
+
+		By default the features are disabled in the firmware. The user
+		can enable features by querying appropriate config id of the
+		features.
+
+		The default limit for the over temperature is 90 Degree Celsius.
+		The default timer interval for the external watchdog is 570ms.
+
+		The supported config ids are for the feature configuration is,
+		1. PM_FEATURE_OVERTEMP_STATUS = 1, the user can enable or
+		disable the over temperature feature.
+		2. PM_FEATURE_OVERTEMP_VALUE = 2, the user can configure the
+		over temperature limit in Degree Celsius.
+		3. PM_FEATURE_EXTWDT_STATUS = 3, the user can enable or disable
+		the external watchdog feature.
+		4. PM_FEATURE_EXTWDT_VALUE = 4, the user can configure the
+		external watchdog feature.
+
+		Usage:
+
+		Enable over temperature feature
+		# echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		# echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+		Check whether the over temperature feature is enabled or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+		The expected result is 1.
+
+		Disable over temperature feature
+		# echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		# echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+		Check whether the over temperature feature is disabled or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+		The expected result is 0.
+
+		Configure over temperature limit to 50 Degree Celsius
+		# echo 2 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		# echo 50 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+		Check whether the over temperature limit is configured or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+		The expected result is 50.
+
+		Enable external watchdog feature
+		# echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		# echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+		Check whether the external watchdog feature is enabled or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+		The expected result is 1.
+
+		Disable external watchdog feature
+		# echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		# echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+		Check whether the external watchdog feature is disabled or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+		The expected result is 0.
+
+		Configure external watchdog timer interval to 500ms
+		# echo 4 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+		# echo 500 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+		Check whether the external watchdog timer interval is configured or not
+		# cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+		The expected result is 500.
+
+Users:		Xilinx