On Thu, Feb 02, 2023 at 09:47:46PM +0530, Krishna Yarlagadda wrote: > Tegra234 and Tegra241 chips have QSPI controller that supports TCG > PC Client Specific TPM Interface Specification (TIS) flow control. > Since the controller only supports half duplex, sw wait polling > (flow control using full duplex transfers) method implemented in > tpm_tis_spi_main.c does not suffice. > Added extended driver to disable sw flow control and send s/Added/Add/ What is "extended driver"? > all transfers in single message. Flow control is handled by hardware. > > Krishna Yarlagadda (4): > dt-bindings: tpm: Add compatible for Tegra TPM > tpm: tegra: Support SPI tpm wait state detect > spi: dt-bindings: Add Tegra TPM wait polling flag > spi: tegra210-quad: Enable TPM wait polling > > .../security/tpm/nvidia,tegra-tpm-spi.txt | 14 ++ > ...nvidia,tegra210-quad-peripheral-props.yaml | 6 + > drivers/char/tpm/Makefile | 1 + > drivers/char/tpm/tpm_tis_spi.h | 1 + > drivers/char/tpm/tpm_tis_spi_main.c | 4 +- > drivers/char/tpm/tpm_tis_spi_tegra.c | 123 ++++++++++++++++++ > drivers/spi/spi-tegra210-quad.c | 16 +++ > 7 files changed, 164 insertions(+), 1 deletion(-) > create mode 100644 Documentation/devicetree/bindings/security/tpm/nvidia,tegra-tpm-spi.txt > create mode 100644 drivers/char/tpm/tpm_tis_spi_tegra.c > > -- > 2.17.1 > BR, Jarkko
