Re: [PATCH v9 6/9] docs: misc-devices: (smpro-misc) Add documentation

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 01/10/2022 11:11, Bagas Sanjaya wrote:
On Thu, Sep 29, 2022 at 04:43:18PM +0700, Quan Nguyen wrote:
Adds documentation for the Ampere(R)'s Altra(R) SMpro misc driver.


s/Adds/Add/

Signed-off-by: Thu Nguyen <thu@xxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Quan Nguyen <quan@xxxxxxxxxxxxxxxxxxxxxx>

Does this patch originally authored by Thu? If so, add From: line before
the patch description.

diff --git a/Documentation/misc-devices/index.rst b/Documentation/misc-devices/index.rst
index b74b3b34a235..b40cd1b402f7 100644
--- a/Documentation/misc-devices/index.rst
+++ b/Documentation/misc-devices/index.rst
@@ -28,6 +28,7 @@ fit into other categories.
     oxsemi-tornado
     pci-endpoint-test
     smpro-errmon
+   smpro-misc
     spear-pcie-gadget
     uacce
     xilinx_sdfec
diff --git a/Documentation/misc-devices/smpro-misc.rst b/Documentation/misc-devices/smpro-misc.rst
new file mode 100644
index 000000000000..d21be4a09e69
--- /dev/null
+++ b/Documentation/misc-devices/smpro-misc.rst
@@ -0,0 +1,82 @@
+.. SPDX-License-Identifier: GPL-2.0-only
+
+Kernel driver Ampere(R) Altra(R) SMpro miscellaneous
+====================================================
+
+Supported chips:
+
+  * Ampere(R) Altra(R)
+
+    Prefix: 'smpro'
+
+    Reference: Altra SoC BMC Interface Specification
+
+Author: Thu Nguyen <thu@xxxxxxxxxxxxxxxxxxxxxx>
+
+Description
+-----------
+
+This driver support the monitoring and configuration of various miscellaneous
+data provided by Ampere(R) Altra(R) SMpro processor.
+At this time, these include:
+
+  * Reading Boot Progress information
+  * Configuring SoC Power Limit
+
+Sysfs entries
+-------------
+
+1) Boot progress
+
+SMpro misc driver creates the sysfs files ``boot_progress``.
+The format of ``boot_progress`` file is as below::
+
+<boot stage><boot status><boot progress>
+
+Where:
+
+* Boot stage::
+
+    0: SMpro firmware booting.
+    1: PMpro firmware booting.
+    2: ATF BL1 firmware booting.
+    3: DDR initialization.
+    4: DDR training report status.
+    5: ATF BL2 firmware booting.
+    6: ATF BL31 firmware booting.
+    7: ATF BL32 firmware booting.
+    8: UEFI firmware booting.
+    9: OS booting.
+
+* Boot status::
+
+    0: Not started.
+    1: Started.
+    2: Complete without error.
+    3: Failure.
+
+* boot progress: 32 bits boot progress code
+
+The sysfs ``boot_progress`` only reports the boot state when the host is booting.
+If the host is already booted, it returns latest state.
+
+Example::
+
+    #cat boot_progress
+    0102808454A8
+
+2) SoC Power Limit
+
+SMpro misc driver creates the sysfs file ``soc_power_limit`` to get/set the SoC Power Limit.
+
+Reading this sysfs return the current setting of SoC Power Limit (W) in decimal string.
+Writing the desired value in decimal string to set the SoC Power Limit in Watt (W).
+The range of SoC Power Limit is 90-500(W) and will be ignored if out of range.
+
+Example::
+
+    #cat soc_power_limit
+    90
+    #echo 95 > soc_power_limit
+    #cat soc_power_limit
+    95

The documentation above can be improved (both grammatical and
formatting):

---- >8 ----

diff --git a/Documentation/misc-devices/smpro-misc.rst b/Documentation/misc-devices/smpro-misc.rst
index d21be4a09e69c4..f33466152ac402 100644
--- a/Documentation/misc-devices/smpro-misc.rst
+++ b/Documentation/misc-devices/smpro-misc.rst
@@ -7,76 +7,77 @@ Supported chips:
* Ampere(R) Altra(R) - Prefix: 'smpro'
+    Prefix: ``smpro``
- Reference: Altra SoC BMC Interface Specification
+    Reference: `Altra SoC BMC Interface Specification`
Author: Thu Nguyen <thu@xxxxxxxxxxxxxxxxxxxxxx> Description
  -----------
-This driver support the monitoring and configuration of various miscellaneous
-data provided by Ampere(R) Altra(R) SMpro processor.
-At this time, these include:
+The smpro-misc driver supports monitoring and configuration of various
+miscellaneous data provided by Ampere(R) Altra(R) SMpro processor.
+Currently, the driver supports:
- * Reading Boot Progress information
-  * Configuring SoC Power Limit
+  * reading boot progress information
+  * configuring SoC power limit
Sysfs entries
  -------------
1) Boot progress -SMpro misc driver creates the sysfs files ``boot_progress``.
-The format of ``boot_progress`` file is as below::
+   The driver creates ``boot_progress`` sysfs file. Its format is described
+   as::
-<boot stage><boot status><boot progress>
+     <boot stage><boot status><boot progress>
-Where:
+   where:
-* Boot stage::
+   * ``<boot stage>`` can be:
- 0: SMpro firmware booting.
-    1: PMpro firmware booting.
-    2: ATF BL1 firmware booting.
-    3: DDR initialization.
-    4: DDR training report status.
-    5: ATF BL2 firmware booting.
-    6: ATF BL31 firmware booting.
-    7: ATF BL32 firmware booting.
-    8: UEFI firmware booting.
-    9: OS booting.
+     * 0: SMpro firmware booting.
+     * 1: PMpro firmware booting.
+     * 2: ATF BL1 firmware booting.
+     * 3: DDR initialization.
+     * 4: DDR training report status.
+     * 5: ATF BL2 firmware booting.
+     * 6: ATF BL31 firmware booting.
+     * 7: ATF BL32 firmware booting.
+     * 8: UEFI firmware booting.
+     * 9: OS booting.
-* Boot status::
+  * ``<boot status>`` can be:
- 0: Not started.
-    1: Started.
-    2: Complete without error.
-    3: Failure.
+     * 0: Not started.
+     * 1: Started.
+     * 2: Complete without error.
+     * 3: Failure.
-* boot progress: 32 bits boot progress code
+  * ``<boot progress>``: 32-bit boot progress code
-The sysfs ``boot_progress`` only reports the boot state when the host is booting.
-If the host is already booted, it returns latest state.
+  The sysfs file  only reports the boot state when the host is booting. If
+  the host is already booted, it returns the latest state.
-Example::
+  Example::
#cat boot_progress
      0102808454A8
-2) SoC Power Limit
+2) SoC power limit
-SMpro misc driver creates the sysfs file ``soc_power_limit`` to get/set the SoC Power Limit.
+   The driver creates ``soc_power_limit`` sysfs file to get/set the SoC
+   power limit.
-Reading this sysfs return the current setting of SoC Power Limit (W) in decimal string.
-Writing the desired value in decimal string to set the SoC Power Limit in Watt (W).
-The range of SoC Power Limit is 90-500(W) and will be ignored if out of range.
+   Reading the file returns the current limit. Write the desired value in
+   decimal to set the limit (in watts).  The valid limit range is 90-500 W.
+   If the value is out of range, it will be ignored.
-Example::
+   Example::
- #cat soc_power_limit
-    90
-    #echo 95 > soc_power_limit
-    #cat soc_power_limit
-    95
+     #cat soc_power_limit
+     90
+     #echo 95 > soc_power_limit
+     #cat soc_power_limit
+     95

Thank you Bagas but as per Greg's comment, this file might be dropped and move to Documentation/ABI in next version.

Thanks a lot for the detail change.
- Quan



[Index of Archives]     [LM Sensors]     [Linux Sound]     [ALSA Users]     [ALSA Devel]     [Linux Audio Users]     [Linux Media]     [Kernel]     [Gimp]     [Yosemite News]     [Linux Media]

  Powered by Linux