lkml.org 
[lkml]   [2020]   [Jun]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 3/5] ARM: dts: stm32: add usart3 node to stm32mp157c-ev1
Date
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 = &ethernet0;
};

@@ -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
\
 
 \ /
  Last update: 2020-06-18 15:08    [W:0.062 / U:0.344 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site