Messages in this thread Patch in this message | | | From | Krishna Yarlagadda <> | Subject | [PATCH 1/4] dt-bindings: tpm: Add compatible for Tegra TPM | Date | Thu, 2 Feb 2023 21:47:47 +0530 |
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Tegra234 and Tegra241 devices have QSPI controller that supports TPM devices. Since the controller only supports half duplex, sw wait polling method implemented in tpm_tis_spi does not suffice. Wait polling as per protocol is a hardware feature.
Add compatible for Tegra TPM driver with hardware flow control.
Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> --- .../bindings/security/tpm/nvidia,tegra-tpm-spi.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/nvidia,tegra-tpm-spi.txt
diff --git a/Documentation/devicetree/bindings/security/tpm/nvidia,tegra-tpm-spi.txt b/Documentation/devicetree/bindings/security/tpm/nvidia,tegra-tpm-spi.txt new file mode 100644 index 000000000000..a2017945c7c0 --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/nvidia,tegra-tpm-spi.txt @@ -0,0 +1,14 @@ +* Device Tree Bindings for TPM device connected to TEGRA QSPI controller + +Required Properties: + +- compatible: Should be "nvidia,tegra-tpm-spi". + +Example: + +&qspi0 { + tpm@0 { + compatible = "nvidia,tegra-tpm-spi"; + reg = <0>; + }; +}; -- 2.17.1
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