Messages in this thread Patch in this message | | | From | Erwan Le Ray <> | Subject | [PATCH v2 3/5] ARM: dts: stm32: add usart3 node to stm32mp157c-ev1 | Date | Thu, 18 Jun 2020 15:06:49 +0200 |
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Adds the usart3 node to stm32mp157c-ev1 board. usart3 pins are connected to GPIO Expansion connector. usart3 is disabled by default.
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Changes in v2: - Add a comment to indicate how to wire USART3_RTS flow control to the GPIO expansion connector on ev1.
diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts index b19056557ef0..85628e16d2d5 100644 --- a/arch/arm/boot/dts/stm32mp157c-ev1.dts +++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts @@ -19,6 +19,7 @@ aliases { serial0 = &uart4; + serial1 = &usart3; ethernet0 = ðernet0; }; @@ -341,6 +342,20 @@ }; }; +&usart3 { + pinctrl-names = "default", "sleep", "idle"; + pinctrl-0 = <&usart3_pins_b>; + pinctrl-1 = <&usart3_sleep_pins_b>; + pinctrl-2 = <&usart3_idle_pins_b>; + /* + * HW flow control USART3_RTS is optional, and isn't default wired to + * the connector. SB23 needs to be soldered in order to use it, and R77 + * (ETH_CLK) should be removed. + */ + uart-has-rtscts; + status = "disabled"; +}; + &usbh_ehci { phys = <&usbphyc_port0>; status = "okay"; -- 2.17.1
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