Hi,
On 03/01/2022 16:46, Gary Bisson wrote:
> - RX/TX signals can be mapped on 2 different pairs of pins so supporting
> both options
> - RTS/CTS signals however only have 1 option available
>
> Signed-off-by: Gary Bisson <gary.bisson@xxxxxxxxxxxxxxxxxxx>
> ---
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> Cc: Kevin Hilman <khilman@xxxxxxxxxxxx>
> Cc: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
> Cc: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
> .../boot/dts/amlogic/meson-g12-common.dtsi | 27 +++++++++++++++++++
> 1 file changed, 27 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
> index af1357c48bee..3a7773ffbd08 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
> @@ -1952,6 +1952,33 @@ mux {
> };
> };
>
> + uart_ao_b_1_pins: uart-ao-b-1 {
> + mux {
> + groups = "uart_ao_b_tx_2",
> + "uart_ao_b_rx_3";
> + function = "uart_ao_b";
> + bias-disable;
> + };
> + };
> +
> + uart_ao_b_2_pins: uart-ao-b-2 {
> + mux {
> + groups = "uart_ao_b_tx_8",
> + "uart_ao_b_rx_9";
> + function = "uart_ao_b";
> + bias-disable;
> + };
> + };
I'm not fan of these nodes namings.
Perhaps :
- uart-ao-b-2-3
- uart-ao-b-8-9
so the actual pins numbers used are more clear ?
> +
> + uart_ao_b_cts_rts_pins: uart-ao-b-cts-rts {
> + mux {
> + groups = "uart_ao_b_cts",
> + "uart_ao_b_rts";
> + function = "uart_ao_b";
> + bias-disable;
> + };
> + };
> +
> pwm_a_e_pins: pwm-a-e {
> mux {
> groups = "pwm_a_e";
>
