kernel/linux.git/Documentation/devicetree/bindings/tpm, branch linux-7.0.y

dt-bindings: tpm: Add st,st33tphf2ei2c

2025-12-31T02:25:08+00:00

Add the ST chip st33tphf2ei2c to the supported compatible strings of the TPM TIS I2C schema. The chip is compliant with the TCG PC Client TPM Profile specification. For reference, a databrief is available at: https://www.st.com/resource/en/data_brief/st33tphf2ei2c.pdf Acked-by: Krzysztof Kozlowski Signed-off-by: Marek Vasut Signed-off-by: Shawn Guo

Merge tag 'devicetree-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2024-05-18T00:27:49+00:00

Pull devicetree updates from Rob Herring: "DT Bindings: - Convert samsung,exynos5-dp, atmel,lcdc, aspeed,ast2400-wdt bindings to schemas - Add bindings for Allwinner H616 NMI controller, Renesas r8a779g0 irqc, Renesas R-Car V4M TMU and CMT timers, Freescale S32G3 linflexuart, and Mediatek MT7988 XHCI - Add 'reg' constraints on DSI and SPI display panels - More dropping of unnecessary quotes in schemas - Use full paths rather than relative paths in schema $refs - Drop redundant storing of phandle for reserved memory DT Core: - Use scope based cleanups for kfree() and of_node_put() - Track interrupt-map and power-supplies for fw_devlink - Add buffer overflow check in of_modalias() - Add and use __of_prop_free() helper for freeing struct property" * tag 'devicetree-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (25 commits) of: property: Add fw_devlink support for interrupt-map property dt-bindings: display: panel: constrain 'reg' in DSI panels dt-bindings: display: panel: constrain 'reg' in SPI panels dt-bindings: display: samsung,ams495qa01: add missing SPI properties ref dt-bindings: Use full path to other schemas dt-bindings: PCI: qcom,pcie-sm8350: Drop redundant 'oneOf' sub-schema of: module: add buffer overflow check in of_modalias() dt-bindings: PCI: microchip: increase number of items in ranges property dt-bindings: Drop unnecessary quotes on keys dt-bindings: interrupt-controller: mediatek,mt6577-sysirq: Drop unnecessary quotes of: property: Use scope based cleanup on port_node of: reserved_mem: Remove the use of phandle from the reserved_mem APIs of: property: fw_devlink: Add support for "power-supplies" binding dt-bindings: watchdog: aspeed,ast2400-wdt: Convert to DT schema dt-bindings: irq: sun7i-nmi: Add binding for the H616 NMI controller dt-bindings: interrupt-controller: renesas,irqc: Add r8a779g0 support dt-bindings: timer: renesas,tmu: Add R-Car V4M support dt-bindings: timer: renesas,cmt: Add R-Car V4M support of: Use scope based of_node_put() cleanups of: Use scope based kfree() cleanups ...

dt-bindings: tpm: Add st,st33ktpm2xi2c

2024-05-09T19:30:50+00:00

Add the ST chip st33ktpm2xi2c to the supported compatible strings of the TPM TIS I2C schema. The Chip is compliant with the TCG PC Client TPM Profile specification. For reference, a datasheet is available at: https://www.st.com/resource/en/data_brief/st33ktpm2xi2c.pdf Reviewed-by: Alexander Sverdlin Signed-off-by: Michael Haener Reviewed-by: Krzysztof Kozlowski Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen

dt-bindings: Drop unnecessary quotes on keys

2024-05-03T12:50:05+00:00

The yamllint quoted-strings check wasn't checking keys for quotes, but support for checking keys was added in 1.34 release. Fix all the errors found when enabling the check. Clean-up the xilinx-versal-cpm formatting while we're here. Acked-by: Mark Brown Reviewed-by: Krzysztof Kozlowski Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20240426202239.2837516-1-robh@kernel.org Signed-off-by: Rob Herring (Arm)

dt-bindings: tpm: Add compatible string atmel,attpm20p

2024-03-11T22:26:05+00:00

Commit 4f2a348aa365 ("arm64: dts: imx8mm-venice-gw73xx: add TPM device") added a devicetree node for the Trusted Platform Module on certain Gateworks boards. The commit only used the generic "tcg,tpm_tis-spi" compatible string, but public documentation shows that the chip is an ATTPM20P from Atmel (nowadays Microchip): https://trac.gateworks.com/wiki/tpm Add the chip to the supported compatible strings of the TPM TIS SPI schema. For reference, a datasheet is available at: https://ww1.microchip.com/downloads/en/DeviceDoc/ATTPM20P-Trusted-Platform-Module-TPM-2.0-SPI-Interface-Summary-Data-Sheet-DS40002082A.pdf Signed-off-by: Lukas Wunner Reviewed-by: Jarkko Sakkinen Cc: Tim Harvey Acked-by: Rob Herring Signed-off-by: Jarkko Sakkinen

dt-bindings: tpm: Drop type from "resets"

2024-01-31T13:42:38+00:00

"resets" is a standard property which already has a type. Users only need to define how many clocks and what each clock is if more than 1 clock. Reviewed-by: Lukas Wunner Link: https://lore.kernel.org/r/20240124190714.1553772-1-robh@kernel.org Signed-off-by: Rob Herring

dt-bindings: tpm: Document Microsoft fTPM bindings

2024-01-09T16:56:19+00:00

A driver for Microsoft's firmware-based Trusted Platform Module (fTPM) was merged with commit 09e574831b27 ("tpm/tpm_ftpm_tee: A driver for firmware TPM running inside TEE"), but its devicetree bindings were not. This is the only remaining undocumented compatible string for a TPM, so add a DT schema based on the patch linked below. Link: https://lore.kernel.org/all/20190409184958.7476-2-sashal@kernel.org/ Signed-off-by: Lukas Wunner Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/99523409eb5aec9276055ff358ae6f2ceb10be6d.1702806810.git.lukas@wunner.de Signed-off-by: Rob Herring

dt-bindings: tpm: Convert IBM vTPM bindings to DT schema

2024-01-09T16:56:19+00:00

Convert the devicetree bindings for the IBM Virtual Trusted Platform Module to DT schema. Drop properties which are already documented in tpm-common.yaml. Document the "IBM,vtpm20" compatible string introduced by commit 18b3670d79ae ("tpm: ibmvtpm: Add support for TPM2"). Signed-off-by: Lukas Wunner Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/5c41e045dfe7cc3f27dd41c08c62ed8c4a90d8a4.1702806810.git.lukas@wunner.de Signed-off-by: Rob Herring

dt-bindings: tpm: Convert Google Cr50 bindings to DT schema

2024-01-09T16:56:18+00:00

Convert the devicetree bindings for the Google Security Chip H1 running Cr50 firmware to DT schema. The chip can be attached to SPI or I²C. Existing devicetrees use the same "google,cr50" compatible string for both cases without additionally specifying a generic "tcg,tpm_tis-spi" or "tcg,tpm-tis-i2c" compatible. The chip therefore cannot be documented in the tcg,tpm_tis-spi.yaml and tcg,tpm-tis-i2c.yaml schemas: The validator would select both of them and complain about SPI properties when the chip is an I²C peripheral. So document the chip in a schema of its own which includes both, SPI and I²C properties by reference. Signed-off-by: Lukas Wunner Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/52635205818ab201cacb0c0f37c7fa48149c7f8e.1702806810.git.lukas@wunner.de Signed-off-by: Rob Herring

dt-bindings: tpm: Consolidate TCG TIS bindings

2024-01-09T16:56:18+00:00

A significant number of Trusted Platform Modules conform to the "TIS" specification published by the Trusted Computing Group ("TCG PC Client Specific TPM Interface Specification"). These chips typically use an SPI, I²C or LPC bus as transport (via MMIO in the latter case). Some of them even support multiple of those buses (selectable through a config strap) or the same chip is available in multiple SKUs, each with a different bus interface. The devicetree bindings for these TPMs have not been converted to DT schema yet and are spread out across 3 generic files and 2 chip-specific files. A few TPM compatible strings were added to trivial-devices.yaml even though additional properties are documented in the plaintext bindings. Consolidate the devicetree bindings into 3 yaml files, one per bus. Move common properties to a separate tpm-common.yaml. Document compatible strings which are supported by the TPM TIS driver but were neglected to be added to the devicetree bindings. Document the memory-region property recently introduced by commit 1e2714bb83fc ("tpm: Add reserved memory event log"). Signed-off-by: Lukas Wunner Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/953fd4c7519030db88e5b5e12ab6307414ebdd21.1702806810.git.lukas@wunner.de Signed-off-by: Rob Herring