From: Seung-Woo Kim <sw0312.kim@samsung.com>
Date: Fri, 14 Aug 2020 07:47:15 +0000 (+0900)
Subject: ARM: dts: bcm2711-rpi-4-b: Enable uart2 node
X-Git-Tag: accepted/tizen/unified/20210330.111217~49
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4c3f960d767dd7ba4b7cfbc41359ce114344f5dc;p=platform%2Fkernel%2Flinux-rpi.git

ARM: dts: bcm2711-rpi-4-b: Enable uart2 node

Enable uart2 to support '/dev/ttyAMA1'. The node setting is from
arch/arm/boot/dts/overlays/uart2-overlay.dts, without cts, rts.
Tx pin is gpio 0, pin 27, and Rx pin is gpio 1, pin 28.

Ref: https://www.raspberrypi.org/forums/viewtopic.php?t=244827

Change-Id: Ib6c460f6c8e46f3ef7d2d40ab23b3524e438c6c9
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
---

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index 7b7dd4f..87471890 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -435,6 +435,12 @@
 	pinctrl-0 = <&uart1_pins>;
 };
 
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart2_pins>;
+	status = "okay";
+};
+
 &spi0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;