Re: [STLinux Kernel] [PATCH v2 07/10] ARM: dts: STiH410-b2260: Identify the UART RTS line

Peter Griffin
2017-02-01T14:55:48Z

On Wed, 01 Feb 2017, Lee Jones wrote:

> When hardware flow-control is disabled, manual toggling of the UART's
> reset line (RTS) using userland applications (e.g. stty) is not
> possible, since the ASC IP does not provide this functionality in the
> same was as some other IPs do. Thus, we have to do this manually.
> This patch configures the UART RTS line as a GPIO for manipulation
> within the UART driver when HW flow-control is not enabled.
>
> Signed-off-by: Lee Jones <lee.jones@linaro.org>

Acked-by: Peter Griffin <peter.griffin@linaro.org>

> ---
> arch/arm/boot/dts/stih410-b2260.dts | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/stih410-b2260.dts b/arch/arm/boot/dts/stih410-b2260.dts
> index 06b0696..fa16aba 100644
> --- a/arch/arm/boot/dts/stih410-b2260.dts
> +++ b/arch/arm/boot/dts/stih410-b2260.dts
> @@ -63,6 +63,7 @@
> uart0: serial@9830000 {
> label = "LS-UART0";
> status = "okay";
> + rts-gpios = <&pio17 3 GPIO_ACTIVE_LOW>;
> };
>
> /* Low speed expansion connector */