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ARM: dts: stm32: fix usart 2 & 3 pinconf to wake up with flow control

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Modify usart 2 & 3 pins to allow wake up from low power mode while the
hardware flow control is activated. UART RTS pin need to stay configure
in idle mode to receive characters in order to wake up.

Fixes: 842ed898a7 ("ARM: dts: stm32: add usart2, usart3 and uart7 pins in stm32mp15-pinctrl")

Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
This commit is contained in:
Valentin CARON - foss 2021-02-11 12:07:03 +01:00 • committed by Alexandre Torgue
parent a38fd87484
commit a1429f3d30
1 changed files with 18 additions and 3 deletions
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21
arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
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@ -1891,10 +1891,15 @@
usart2_idle_pins_c: usart2-idle-2 {
pins1 {
pinmux = <STM32_PINMUX('D', 5, ANALOG)>, /* USART2_TX */
<STM32_PINMUX('D', 4, ANALOG)>, /* USART2_RTS */
<STM32_PINMUX('D', 3, ANALOG)>; /* USART2_CTS_NSS */
};
pins2 {
pinmux = <STM32_PINMUX('D', 4, AF7)>; /* USART2_RTS */
bias-disable;
drive-push-pull;
slew-rate = <3>;
};
pins3 {
pinmux = <STM32_PINMUX('D', 6, AF7)>; /* USART2_RX */
bias-disable;
};
@ -1940,10 +1945,15 @@
usart3_idle_pins_b: usart3-idle-1 {
pins1 {
pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */
<STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */
<STM32_PINMUX('I', 10, ANALOG)>; /* USART3_CTS_NSS */
};
pins2 {
pinmux = <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins3 {
pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */
bias-disable;
};
@ -1976,10 +1986,15 @@
usart3_idle_pins_c: usart3-idle-2 {
pins1 {
pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */
<STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */
<STM32_PINMUX('B', 13, ANALOG)>; /* USART3_CTS_NSS */
};
pins2 {
pinmux = <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins3 {
pinmux = <STM32_PINMUX('B', 12, AF8)>; /* USART3_RX */
bias-disable;
};