Commit 251fe9a5 authored by Erwan Le Ray's avatar Erwan Le Ray Committed by Alexandre Torgue
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ARM: dts: stm32: update uart4 pin configuration for low power on stm32mp157 



Sleep pin configuration is refined for low power modes:
- "sleep" (no wakeup & console suspend enabled): put pins in analog state
  to optimize power
- "idle" (wakeup capability): keep Rx pin in alternate function

Signed-off-by: default avatarBich Hemon <bich.hemon@st.com>
Signed-off-by: default avatarErwan Le Ray <erwan.leray@st.com>
Signed-off-by: default avatarAlexandre Torgue <alexandre.torgue@st.com>
parent 1a21240d

arch/arm/boot/dts/stm32mp15-pinctrl.dtsi

+17 −0
Original line number Diff line number Diff line
@@ -1648,6 +1648,23 @@ pins2 { 
		};

	};



	uart4_idle_pins_a: uart4-idle-0 {

		   pins1 {

			 pinmux = <STM32_PINMUX('G', 11, ANALOG)>; /* UART4_TX */

		   };

		   pins2 {

			 pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */

			 bias-disable;

		   };

	};



	uart4_sleep_pins_a: uart4-sleep-0 {

		   pins {

			pinmux = <STM32_PINMUX('G', 11, ANALOG)>, /* UART4_TX */

				 <STM32_PINMUX('B', 2, ANALOG)>; /* UART4_RX */

		    };

	};



	uart4_pins_b: uart4-1 {

		pins1 {

			pinmux = <STM32_PINMUX('D', 1, AF8)>; /* UART4_TX */