hwmon: (sfctemp) Add StarFive JH71x0 temperature sensor
[platform/kernel/linux-starfive.git] / Documentation / admin-guide / kernel-parameters.txt
index a465d52..6b83886 100644 (file)
                        Provide an override to the IOAPIC-ID<->DEVICE-ID
                        mapping provided in the IVRS ACPI table.
                        By default, PCI segment is 0, and can be omitted.
-                       For example:
+
+                       For example, to map IOAPIC-ID decimal 10 to
+                       PCI segment 0x1 and PCI device 00:14.0,
+                       write the parameter as:
+                               ivrs_ioapic=10@0001:00:14.0
+
+                       Deprecated formats:
                        * To map IOAPIC-ID decimal 10 to PCI device 00:14.0
                          write the parameter as:
                                ivrs_ioapic[10]=00:14.0
                        Provide an override to the HPET-ID<->DEVICE-ID
                        mapping provided in the IVRS ACPI table.
                        By default, PCI segment is 0, and can be omitted.
-                       For example:
+
+                       For example, to map HPET-ID decimal 10 to
+                       PCI segment 0x1 and PCI device 00:14.0,
+                       write the parameter as:
+                               ivrs_hpet=10@0001:00:14.0
+
+                       Deprecated formats:
                        * To map HPET-ID decimal 0 to PCI device 00:14.0
                          write the parameter as:
                                ivrs_hpet[0]=00:14.0
        ivrs_acpihid    [HW,X86-64]
                        Provide an override to the ACPI-HID:UID<->DEVICE-ID
                        mapping provided in the IVRS ACPI table.
+                       By default, PCI segment is 0, and can be omitted.
 
                        For example, to map UART-HID:UID AMD0020:0 to
                        PCI segment 0x1 and PCI device ID 00:14.5,
                        write the parameter as:
-                               ivrs_acpihid[0001:00:14.5]=AMD0020:0
+                               ivrs_acpihid=AMD0020:0@0001:00:14.5
 
-                       By default, PCI segment is 0, and can be omitted.
-                       For example, PCI device 00:14.5 write the parameter as:
+                       Deprecated formats:
+                       * To map UART-HID:UID AMD0020:0 to PCI segment is 0,
+                         PCI device ID 00:14.5, write the parameter as:
                                ivrs_acpihid[00:14.5]=AMD0020:0
+                       * To map UART-HID:UID AMD0020:0 to PCI segment 0x1 and
+                         PCI device ID 00:14.5, write the parameter as:
+                               ivrs_acpihid[0001:00:14.5]=AMD0020:0
 
        js=             [HW,JOY] Analog joystick
                        See Documentation/input/joydev/joystick.rst.
                                memory, and other data can't be written using
                                xmon commands.
                        off     xmon is disabled.
+
+       amd_pstate=     [X86]
+                       disable
+                         Do not enable amd_pstate as the default
+                         scaling driver for the supported processors
+                       passive
+                         Use amd_pstate as a scaling driver, driver requests a
+                         desired performance on this abstract scale and the power
+                         management firmware translates the requests into actual
+                         hardware states (core frequency, data fabric and memory
+                         clocks etc.)