[PATCH v4 3/8] spi: stm32: Add 'SPI_SIMPLEX_RX', 'SPI_3WIRE_RX' support for stm32f4

[Mark Brown]

On Sat, May 23, 2020 at 09:35:06AM +0800, dillon min wrote:

> -       if (ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) {
> +       if ((ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) &&
> +               !(msg->spi->mode & SPI_3WIRE)) {
>                 max_tx = 0;
>                 max_rx = 0;

> for my board, lcd panel ilitek ill9341 use 3wire mode, gyro l3gd20 use
> simplex rx mode.
> it's has benefits to l3gd20, no impact to ili9341.

> if it's fine to spi-core, i will include it to my next submits.

Yes, looks reasonable.
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