Re: [PATCH 4/4] spi: gpio: Support 3WIRE high impedance turn-around

[Lorenzo Bianconi <lorenzo.bianconi@xxxxxxxxxx>]

On Sep 03, Linus Walleij wrote:
> Some devices such as the TPO TPG110 display panel require
> a "high impedance turnaround", in effect a clock cycle after
> switching the line from output to input mode.
> 
> Support this in the GPIO driver to begin with. Other driver
> may implement it if they can, it is unclear if this can
> be achieved with anything else than GPIO bit-banging.
> 
> Cc: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
> Cc: Lorenzo Bianconi <lorenzo.bianconi@xxxxxxxxxx>
> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
> ---
>  drivers/spi/spi-gpio.c  | 24 +++++++++++++++++++++---
>  drivers/spi/spi.c       |  2 ++
>  include/linux/spi/spi.h |  1 +
>  3 files changed, 24 insertions(+), 3 deletions(-)
> 

Acked-by: Lorenzo Bianconi <lorenzo.bianconi@xxxxxxxxxx>