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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /Documentation/ABI/testing/sysfs-driver-ppi
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Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
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+What: /sys/class/tpm/tpmX/ppi/
+Date: August 2012
+KernelVersion: 3.6
+Contact: xiaoyan.zhang@intel.com
+Description:
+ This folder includes the attributes related with PPI (Physical
+ Presence Interface). Only if TPM is supported by BIOS, this
+ folder makes sense. The folder path can be got by command
+ 'find /sys/ -name 'pcrs''. For the detail information of PPI,
+ please refer to the PPI specification from
+
+ http://www.trustedcomputinggroup.org/
+
+ In Linux 4.2 ppi was moved to the character device directory.
+ A symlink from tpmX/device/ppi to tpmX/ppi to provide backwards
+ compatibility.
+
+What: /sys/class/tpm/tpmX/ppi/version
+Date: August 2012
+Contact: xiaoyan.zhang@intel.com
+Description:
+ This attribute shows the version of the PPI supported by the
+ platform.
+ This file is readonly.
+
+What: /sys/class/tpm/tpmX/ppi/request
+Date: August 2012
+Contact: xiaoyan.zhang@intel.com
+Description:
+ This attribute shows the request for an operation to be
+ executed in the pre-OS environment. It is the only input from
+ the OS to the pre-OS environment. The request should be an
+ integer value range from 1 to 160, and 0 means no request.
+ This file can be read and written.
+
+What: /sys/class/tpm/tpmX/ppi/response
+Date: August 2012
+Contact: xiaoyan.zhang@intel.com
+Description:
+ This attribute shows the response to the most recent operation
+ request it acted upon. The format is "<request> <response num>
+ : <response description>".
+ This file is readonly.
+
+What: /sys/class/tpm/tpmX/ppi/transition_action
+Date: August 2012
+Contact: xiaoyan.zhang@intel.com
+Description:
+ This attribute shows the platform-specific action that should
+ take place in order to transition to the BIOS for execution of
+ a requested operation. The format is "<action num>: <action
+ description>".
+ This file is readonly.
+
+What: /sys/class/tpm/tpmX/ppi/tcg_operations
+Date: August 2012
+Contact: xiaoyan.zhang@intel.com
+Description:
+ This attribute shows whether it is allowed to request an
+ operation to be executed in the pre-OS environment by the BIOS
+ for the requests defined by TCG, i.e. requests from 1 to 22.
+ The format is "<request> <status num>: <status description>".
+ This attribute is only supported by PPI version 1.2+.
+ This file is readonly.
+
+What: /sys/class/tpm/tpmX/ppi/vs_operations
+Date: August 2012
+Contact: xiaoyan.zhang@intel.com
+Description:
+ This attribute shows whether it is allowed to request an
+ operation to be executed in the pre-OS environment by the BIOS
+ for the verdor specific requests, i.e. requests from 128 to
+ 255. The format is same with tcg_operations. This attribute
+ is also only supported by PPI version 1.2+.
+ This file is readonly.