Re: [Patch V6 3/3] spi: tegra210-quad: Enable TPM wait polling

From: Thierry Reding
Date: Wed Mar 01 2023 - 08:39:39 EST


On Mon, Feb 27, 2023 at 10:51:08PM +0530, 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.
> Set half duplex flag for TPM device to detect and send entire message
> to controller in one shot.
>
> Signed-off-by: Krishna Yarlagadda <kyarlagadda@xxxxxxxxxx>
> ---
> drivers/spi/spi-tegra210-quad.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)

Acked-by: Thierry Reding <treding@xxxxxxxxxx>

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