From: Krishna Yarlagadda <kyarlagadda@nvidia.com>
To: <robh+dt@kernel.org>, <broonie@kernel.org>, <peterhuewe@gmx.de>,
<jgg@ziepe.ca>, <jarkko@kernel.org>,
<krzysztof.kozlowski+dt@linaro.org>, <linux-spi@vger.kernel.org>,
<linux-tegra@vger.kernel.org>, <linux-integrity@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Cc: <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
<skomatineni@nvidia.com>, <ldewangan@nvidia.com>,
Krishna Yarlagadda <kyarlagadda@nvidia.com>
Subject: [Patch V2 0/4] Tegra TPM driver with hw flow control
Date: Fri, 3 Feb 2023 18:31:29 +0530 [thread overview]
Message-ID: <20230203130133.32901-1-kyarlagadda@nvidia.com> (raw)
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
all transfers in single message. Flow control is handled by hardware.
V2: Fix dt schema errors.
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.yaml | 34 +++++
...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, 184 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/security/tpm/nvidia,tegra-tpm-spi.yaml
create mode 100644 drivers/char/tpm/tpm_tis_spi_tegra.c
--
2.17.1
next reply other threads:[~2023-02-03 13:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-03 13:01 Krishna Yarlagadda [this message]
2023-02-03 13:01 ` [Patch V2 1/4] dt-bindings: tpm: Add compatible for Tegra TPM Krishna Yarlagadda
2023-02-03 18:57 ` Rob Herring
2023-02-03 13:01 ` [Patch V2 2/4] tpm: tegra: Support SPI tpm wait state detect Krishna Yarlagadda
2023-02-03 23:43 ` kernel test robot
2023-02-04 9:48 ` kernel test robot
2023-02-06 11:02 ` Paul Menzel
2023-02-06 13:19 ` Mark Brown
2023-02-06 16:10 ` Thierry Reding
2023-02-03 13:01 ` [Patch V2 3/4] spi: dt-bindings: Add Tegra TPM wait polling flag Krishna Yarlagadda
2023-02-03 19:49 ` Rob Herring
2023-02-23 16:26 ` Krishna Yarlagadda
2023-02-03 13:01 ` [Patch V2 4/4] spi: tegra210-quad: Enable TPM wait polling Krishna Yarlagadda
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