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| author | Erwan Le Ray <erwan.leray@st.com> | 2020-05-28 10:38:51 +0300 |
|---|---|---|
| committer | Alexandre Torgue <alexandre.torgue@st.com> | 2020-06-15 13:10:13 +0300 |
| commit | 251fe9a53354a55ffc4151f8176b443c6129c384 (patch) | |
| tree | 4a44a2ab41d47f3e35a6776296ffa83692e10f79 /arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | |
| parent | 1a21240dd017d55966e55884e817686720c500bd (diff) | |
| download | linux-251fe9a53354a55ffc4151f8176b443c6129c384.tar.xz | |
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: Bich Hemon <bich.hemon@st.com>
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Diffstat (limited to 'arch/arm/boot/dts/stm32mp15-pinctrl.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi index 7eb858732d6d..7cf535dc05f5 100644 --- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi +++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi @@ -1648,6 +1648,23 @@ }; }; + 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 */ |