| Message ID | 20230202161750.21210-2-kyarlagadda@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Tegra TPM driver with hw flow control | expand |
On 02/02/2023 17:17, Krishna Yarlagadda wrote: > 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. Sorry, new bindings only in DT schema. see Documentation/devicetree/bindings/writing-schema.rst for instructions. Best regards, Krzysztof
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>; + }; +};
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