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Subject[PATCH 1/5] ARM: dts: stm32: add usart2, usart3 and uart7 pins in stm32mp15-pinctrl
Date
Adds usart2_pins_c, usart3_pins_b, usart3_pins_c and uart7_pins_c pins
configurations in stm32mp15-pinctrl.
- usart2_pins_c pins are connected to Bluetooth chip on dk2 board.
- usart3_pins_b pins are connected to GPIO expansion connector on evx board.
- usart3_pins_c pins are connected to GPIO expansion connector on dkx board.
- uart7_pins_c pins are connected to Arduino Uno connector on dkx board.

Signed-off-by: Erwan Le Ray <erwan.leray@st.com>

diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
index fb98a66977fe..99e399e4e4c3 100644
--- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
@@ -1658,6 +1658,36 @@
};
};

+ uart7_pins_c: uart7-1 {
+ pins1 {
+ pinmux = <STM32_PINMUX('E', 8, AF7)>; /* USART7_TX */
+ bias-disable;
+ drive-push-pull;
+ slew-rate = <0>;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('E', 7, AF7)>; /* USART7_RX */
+ bias-disable;
+ };
+ };
+
+ uart7_idle_pins_c: uart7-idle-1 {
+ pins1 {
+ pinmux = <STM32_PINMUX('E', 8, ANALOG)>; /* USART7_TX */
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('E', 7, AF7)>; /* USART7_RX */
+ bias-disable;
+ };
+ };
+
+ uart7_sleep_pins_c: uart7-sleep-1 {
+ pins {
+ pinmux = <STM32_PINMUX('E', 8, ANALOG)>, /* USART7_TX */
+ <STM32_PINMUX('E', 7, ANALOG)>; /* USART7_RX */
+ };
+ };
+
uart8_pins_a: uart8-0 {
pins1 {
pinmux = <STM32_PINMUX('E', 1, AF8)>; /* UART8_TX */
@@ -1719,6 +1749,42 @@
};
};

+ usart2_pins_c: usart2-0 {
+ pins1 {
+ pinmux = <STM32_PINMUX('D', 5, AF7)>, /* USART2_TX */
+ <STM32_PINMUX('D', 4, AF7)>; /* USART2_RTS */
+ bias-disable;
+ drive-push-pull;
+ slew-rate = <3>;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('D', 6, AF7)>, /* USART2_RX */
+ <STM32_PINMUX('D', 3, AF7)>; /* USART2_CTS_NSS */
+ bias-disable;
+ };
+ };
+
+ usart2_idle_pins_c: usart2-idle-0 {
+ 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', 6, AF7)>; /* USART2_RX */
+ bias-disable;
+ };
+ };
+
+ usart2_sleep_pins_c: usart2-sleep-0 {
+ pins {
+ pinmux = <STM32_PINMUX('D', 5, ANALOG)>, /* USART2_TX */
+ <STM32_PINMUX('D', 4, ANALOG)>, /* USART2_RTS */
+ <STM32_PINMUX('D', 6, ANALOG)>, /* USART2_RX */
+ <STM32_PINMUX('D', 3, ANALOG)>; /* USART2_CTS_NSS */
+ };
+ };
+
usart3_pins_a: usart3-0 {
pins1 {
pinmux = <STM32_PINMUX('B', 10, AF7)>; /* USART3_TX */
@@ -1732,6 +1798,78 @@
};
};

+ usart3_pins_b: usart3-0 {
+ pins1 {
+ pinmux = <STM32_PINMUX('B', 10, AF7)>, /* USART3_TX */
+ <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */
+ bias-disable;
+ drive-push-pull;
+ slew-rate = <0>;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('B', 12, AF8)>, /* USART3_RX */
+ <STM32_PINMUX('I', 10, AF8)>; /* USART3_CTS_NSS */
+ bias-disable;
+ };
+ };
+
+ usart3_idle_pins_b: usart3-idle-0 {
+ 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('B', 12, AF8)>; /* USART3_RX */
+ bias-disable;
+ };
+ };
+
+ usart3_sleep_pins_b: usart3-sleep-0 {
+ pins {
+ pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */
+ <STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */
+ <STM32_PINMUX('I', 10, ANALOG)>, /* USART3_CTS_NSS */
+ <STM32_PINMUX('B', 12, ANALOG)>; /* USART3_RX */
+ };
+ };
+
+ usart3_pins_c: usart3-1 {
+ pins1 {
+ pinmux = <STM32_PINMUX('B', 10, AF7)>, /* USART3_TX */
+ <STM32_PINMUX('G', 8, AF8)>; /* USART3_RTS */
+ bias-disable;
+ drive-push-pull;
+ slew-rate = <0>;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('B', 12, AF8)>, /* USART3_RX */
+ <STM32_PINMUX('B', 13, AF7)>; /* USART3_CTS_NSS */
+ bias-disable;
+ };
+ };
+
+ usart3_idle_pins_c: usart3-idle-1 {
+ 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('B', 12, AF8)>; /* USART3_RX */
+ bias-disable;
+ };
+ };
+
+ usart3_sleep_pins_c: usart3-sleep-1 {
+ pins {
+ pinmux = <STM32_PINMUX('B', 10, ANALOG)>, /* USART3_TX */
+ <STM32_PINMUX('G', 8, ANALOG)>, /* USART3_RTS */
+ <STM32_PINMUX('B', 13, ANALOG)>, /* USART3_CTS_NSS */
+ <STM32_PINMUX('B', 12, ANALOG)>; /* USART3_RX */
+ };
+ };
+
usbotg_hs_pins_a: usbotg-hs-0 {
pins {
pinmux = <STM32_PINMUX('A', 10, ANALOG)>; /* OTG_ID */
--
2.17.1
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