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2024-01-09dt-bindings: tpm: Convert IBM vTPM bindings to DT schemaLukas Wunner1-41/+0
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 <[email protected]> Reviewed-by: Rob Herring <[email protected]> Link: https://lore.kernel.org/r/5c41e045dfe7cc3f27dd41c08c62ed8c4a90d8a4.1702806810.git.lukas@wunner.de Signed-off-by: Rob Herring <[email protected]>
2024-01-09dt-bindings: tpm: Convert Google Cr50 bindings to DT schemaLukas Wunner1-19/+0
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 <[email protected]> Reviewed-by: Rob Herring <[email protected]> Link: https://lore.kernel.org/r/52635205818ab201cacb0c0f37c7fa48149c7f8e.1702806810.git.lukas@wunner.de Signed-off-by: Rob Herring <[email protected]>
2024-01-09dt-bindings: tpm: Consolidate TCG TIS bindingsLukas Wunner5-140/+0
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 <[email protected]> Reviewed-by: Rob Herring <[email protected]> Link: https://lore.kernel.org/r/953fd4c7519030db88e5b5e12ab6307414ebdd21.1702806810.git.lukas@wunner.de Signed-off-by: Rob Herring <[email protected]>
2019-11-12dt-bindings: tpm: document properties for cr50Andrey Pronin1-0/+19
Add TPM2.0 PTP FIFO compatible SPI interface for chips with Cr50 firmware. Cc: Andrey Pronin <[email protected]> Cc: Duncan Laurie <[email protected]> Cc: Jason Gunthorpe <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Guenter Roeck <[email protected]> Cc: Alexander Steffen <[email protected]> Cc: Heiko Stuebner <[email protected]> Signed-off-by: Andrey Pronin <[email protected]> Reviewed-by: Rob Herring <[email protected]> Signed-off-by: Stephen Boyd <[email protected]> Acked-by: Jarkko Sakkinen <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]>
2018-07-25dt-bindings: remove 'interrupt-parent' from bindingsRob Herring3-3/+1
'interrupt-parent' is often documented as part of define bindings, but it is really outside the scope of a device binding. It's never required in a given node as it is often inherited from a parent node. Or it can be implicit if a parent node is an 'interrupt-controller' node. So remove it from all the binding files. Cc: Mark Rutland <[email protected]> Cc: [email protected] Signed-off-by: Rob Herring <[email protected]>
2017-09-24Merge branch 'next-tpm' of ↵Linus Torvalds1-0/+6
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull TPM updates from James Morris: "Here are the TPM updates from Jarkko for v4.14, which I've placed in their own branch (next-tpm). I ended up cherry-picking them as other changes had been made in Jarkko's branch after he sent me his original pull request. I plan on maintaining a separate branch for TPM (and other security subsystems) from now on. From Jarkko: 'Not much this time except a few fixes'" * 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: tpm: ibmvtpm: simplify crq initialization and document crq format tpm: replace msleep() with usleep_range() in TPM 1.2/2.0 generic drivers Documentation: tpm: add powered-while-suspended binding documentation tpm: tpm_crb: constify acpi_device_id. tpm: vtpm: constify vio_device_id
2017-09-23Documentation: tpm: add powered-while-suspended binding documentationEnric Balletbo i Serra1-0/+6
Add a new powered-while-suspended property to control the behavior of the TPM suspend/resume. Signed-off-by: Enric Balletbo i Serra <[email protected]> Signed-off-by: Sonny Rao <[email protected]> Reviewed-by: Jason Gunthorpe <[email protected]> Reviewed-by: Jarkko Sakkinen <[email protected]> Acked-by: Rob Herring <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]> Signed-off-by: James Morris <[email protected]>
2017-09-05dt-bindings: Remove "status" from examplesRob Herring4-4/+0
Pretty much any node can have a status property, so it doesn't need to be in examples. Converted with the following command and removed examples with SoC and board specific splits: git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d' Acked-by: Mark Rutland <[email protected]> Signed-off-by: Rob Herring <[email protected]>
2016-11-28tpm_tis: Allow tpm_tis to be bound using DTJason Gunthorpe1-0/+25
This provides an open firwmare driver binding for tpm_tis. OF is useful on arches where ACPI/PNP is not used. The tcg,tpm-tis-mmio register map interface is specified by the TCG. Reviewed-by: Rob Herring <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]> Reviewed-by: Jarkko Sakkinen <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]>
2016-11-28Documentation: tpm: add the Physical TPM device tree binding documentationNayna Jain1-0/+21
Newly added support of TPM 2.0 eventlog securityfs pseudo files in tpm device driver consumes device tree bindings representing I2C based Physical TPM. This patch adds the documentation for corresponding device tree bindings of I2C based Physical TPM. These bindings are similar to vtpm device tree bindings being used on IBM Power7+ and Power8 Systems running PowerVM. Suggested-by: Jason Gunthorpe <[email protected]> Signed-off-by: Nayna Jain <[email protected]> Acked-by: Rob Herring <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]>
2016-11-28Documentation: tpm: add the IBM Virtual TPM device tree binding documentationNayna Jain1-0/+41
Virtual TPM, which is being used on IBM POWER7+ and POWER8 systems running POWERVM, is currently supported by tpm device driver but lacks the documentation. This patch adds the missing documentation for the existing support. Suggested-by: Jason Gunthorpe <[email protected]> Signed-off-by: Nayna Jain <[email protected]> Acked-by: Rob Herring <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]>
2016-06-25tpm/tpm_tis_spi: Add support for spi phyChristophe Ricard1-0/+24
Spi protocol standardized by the TCG is now supported by most of TPM vendors. It supports SPI Bit Protocol as describe in the TCG PTP specification (chapter 6.4.6 SPI Bit Protocol). Irq mode is not supported. This commit is based on the initial work by Peter Huewe. Signed-off-by: Peter Huewe <[email protected]> Signed-off-by: Alexander Steffen <[email protected]> Signed-off-by: Christophe Ricard <[email protected]> Reviewed-by: Jarkko Sakkinen <[email protected]> Tested-by: Jarkko Sakkinen <[email protected]> Tested-by: Stefan Berger <[email protected]> Reviewed-by: Stefan Berger <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]>
2015-03-18tpm/st33zp24/dts/st33zp24-spi: Add dts documentation for st33zp24 spi phyChristophe Ricard1-0/+34
Reviewed-by: Jason Gunthorpe <[email protected]> Signed-off-by: Christophe Ricard <[email protected]> Signed-off-by: Peter Huewe <[email protected]>
2015-01-17tpm/tpm_i2c_stm_st33/dts/st33zp24-i2c: Rename st33zp24 dts documentationChristophe Ricard1-1/+1
st33zp24 exists in i2c and spi version. Both have different possible configuration. st33zp24.txt is renamed st33zp24-i2c.txt. Reviewed-by: Jason Gunthorpe <[email protected]> Signed-off-by: Christophe Ricard <[email protected]> Reviewed-by: Peter Huewe <[email protected]> Signed-off-by: Peter Huewe <[email protected]>
2015-01-17tpm/tpm_i2c_stm_st33/dts/st33zp24_i2c: Add DTS DocumentationChristophe Ricard1-0/+36
st33zp24 tpm can be seen as a trivial i2c device as other i2c tpm. However several other properties needs to be documented such as lpcpd. Reviewed-by: Jason Gunthorpe <[email protected]> Signed-off-by: Christophe Ricard <[email protected]> Signed-off-by: Peter Huewe <[email protected]>
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