Files
operating-system/buildroot-external/board/raspberrypi/amber/patches/linux/0002-ARM-dts-bcm2711-amber-Mux-UART4-for-SiLabs-radio-mod.patch
Stefan Agner e63aa1a5f4 Update Linux kernel patches for Home Assistant Amber (#1626)
Support the user LED available on the latest revision of the PCB. Also
rebase the patchset ontop of the Raspberry Pi kernel 1.20210928.
2021-11-03 00:54:15 +01:00

59 lines
1.6 KiB
Diff

From 60125e49aff88c430ebc6b8702aaf3867f529b75 Mon Sep 17 00:00:00 2001
Message-Id: <60125e49aff88c430ebc6b8702aaf3867f529b75.1635895105.git.stefan@agner.ch>
In-Reply-To: <fa42d0ece205b3c2a8a06dac3e4436400cf59978.1635895105.git.stefan@agner.ch>
References: <fa42d0ece205b3c2a8a06dac3e4436400cf59978.1635895105.git.stefan@agner.ch>
From: Stefan Agner <stefan@agner.ch>
Date: Thu, 4 Mar 2021 14:33:09 +0100
Subject: [PATCH 2/7] ARM: dts: bcm2711: amber: Mux UART4 for SiLabs radio
module
Enable UART4 by default and mux pins including hardware flow control.
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
arch/arm/boot/dts/bcm2711-rpi-cm4-ha-amber.dts | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/bcm2711-rpi-cm4-ha-amber.dts b/arch/arm/boot/dts/bcm2711-rpi-cm4-ha-amber.dts
index 855da2b029a4..ba4116cdffc4 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-cm4-ha-amber.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-cm4-ha-amber.dts
@@ -21,6 +21,7 @@ memory@0 {
};
aliases {
+ serial4 = &uart4;
emmc2bus = &emmc2bus;
ethernet0 = &genet;
pcie0 = &pcie0;
@@ -321,6 +322,14 @@ &uart1 {
status = "okay";
};
+/* uart4 for Zigbee */
+&uart4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart4_pins>;
+ uart-has-rtscts;
+ status = "okay";
+};
+
&vchiq {
interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
};
@@ -549,9 +558,9 @@ uart3_pins: uart3_pins {
};
uart4_pins: uart4_pins {
- brcm,pins = <8 9>;
+ brcm,pins = <8 9 10 11>;
brcm,function = <BCM2835_FSEL_ALT4>;
- brcm,pull = <0 2>;
+ brcm,pull = <0 2 2 0>;
};
uart5_pins: uart5_pins {
--
2.33.1