From: Jon Hunter <jonathanh@nvidia.com>
To: Krishna Yarlagadda <kyarlagadda@nvidia.com>,
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, skomatineni@nvidia.com, ldewangan@nvidia.com
Subject: Re: [Patch V6 3/3] spi: tegra210-quad: Enable TPM wait polling
Date: Wed, 1 Mar 2023 13:51:42 +0000 [thread overview]
Message-ID: <fc274097-93f5-1f01-952f-dda06b5ddaff@nvidia.com> (raw)
In-Reply-To: <20230227172108.8206-4-kyarlagadda@nvidia.com>
On 27/02/2023 17:21, Krishna Yarlagadda wrote:
> Trusted Platform Module requires flow control. As defined in TPM
> interface specification, client would drive MISO line at same cycle as
> last address bit on MOSI.
> Tegra241 QSPI controller has TPM wait state detection feature which is
> enabled for TPM client devices reported in SPI device mode bits.
Earlier in patch 2/3 we say Tegra234 and Tegra241 but here we just say
Tegra241.
> static struct tegra_qspi_soc_data tegra186_qspi_soc_data = {
> .has_dma = true,
> .cmb_xfer_capable = true,
> + .support_tpm = false,
> .cs_count = 1,
> };
>
> static struct tegra_qspi_soc_data tegra234_qspi_soc_data = {
> .has_dma = false,
> .cmb_xfer_capable = true,
> + .support_tpm = true,
> .cs_count = 1,
> };
>
> static struct tegra_qspi_soc_data tegra241_qspi_soc_data = {
> .has_dma = false,
> .cmb_xfer_capable = true,
> + .support_tpm = true,
> .cs_count = 4,
> };
>
We enable for both Tegra234 and Tegra241 and so the commit message
should say so.
Jon
--
nvpublic
prev parent reply other threads:[~2023-03-01 13:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-27 17:21 [Patch V6 0/3] Tegra TPM driver with HW flow control Krishna Yarlagadda
2023-02-27 17:21 ` [Patch V6 1/3] spi: Add TPM HW flow flag Krishna Yarlagadda
2023-03-01 13:34 ` Thierry Reding
2023-03-01 15:27 ` Krishna Yarlagadda
2023-02-27 17:21 ` [Patch V6 2/3] tpm_tis-spi: Support hardware wait polling Krishna Yarlagadda
2023-03-01 13:37 ` Thierry Reding
2023-02-27 17:21 ` [Patch V6 3/3] spi: tegra210-quad: Enable TPM " Krishna Yarlagadda
2023-03-01 13:39 ` Thierry Reding
2023-03-01 13:41 ` Thierry Reding
2023-03-01 13:51 ` Jon Hunter [this message]
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