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openwrt/target/linux/bcm27xx/patches-6.6/950-0805-ARM-dts-bcm2712-rpi-5-b-Allow-RTC-to-be-disabled.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

39 lines
1.6 KiB
Diff

From a7d602c262510352faff743e55373e77444cb57f Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Tue, 19 Dec 2023 14:55:21 +0000
Subject: [PATCH 0805/1085] ARM: dts: bcm2712-rpi-5-b: Allow RTC to be disabled
Add a dtparam "rtc", so that "dtparam=rtc=off" can be used to disable
the Pi 5's onboard RTC.
See: https://forums.raspberrypi.com/viewtopic.php?t=361813
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
arch/arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts | 1 +
arch/arm/boot/dts/overlays/README | 3 +++
2 files changed, 4 insertions(+)
--- a/arch/arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts
+++ b/arch/arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts
@@ -819,6 +819,7 @@ spi10_cs_pins: &spi10_cs_gpio1 {};
pciex1_tperst_clk_ms = <&pciex1>, "brcm,tperst-clk-ms:0";
pcie_tperst_clk_ms = <&pciex1>, "brcm,tperst-clk-ms:0";
random = <&random>, "status";
+ rtc = <&rpi_rtc>, "status";
rtc_bbat_vchg = <&rpi_rtc>, "trickle-charge-microvolt:0";
spi = <&spi0>, "status";
suspend = <&pwr_key>, "linux,code:0=205";
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -307,6 +307,9 @@ Params:
random Set to "on" to enable the hardware random
number generator (default "on")
+ rtc Set to "off" to disable the onboard Real Time
+ Clock (2712 only, default "on")
+
rtc_bbat_vchg Set the RTC backup battery charging voltage in
microvolts. If set to 0 or not specified, the
trickle charger is disabled.