From a0b552605f8c588fdd9ea062886fb90d50534a8d Mon Sep 17 00:00:00 2001 From: Nathan Morrisson Date: Thu, 13 Jun 2024 16:07:58 -0700 Subject: [PATCH] arm64: dts: ti: k3-am6xx-phycore-som: Add overlay to disable rtc Add an overlay to disable the rtc for all am6xx-phycore-som boards. The EEPROM on am6xx-phycore-soms contains information about the configuration of the SOM. The standard configuration of the SOM has an rtc, but if no rtc is populated, the EEPROM will indicate that change and we can use this overlay to cleanly disable the rtc. Signed-off-by: Nathan Morrisson Link: https://lore.kernel.org/r/20240613230759.1984966-4-nmorrisson@phytec.com Signed-off-by: Vignesh Raghavendra --- arch/arm64/boot/dts/ti/Makefile | 5 +++++ .../boot/dts/ti/k3-am6xx-phycore-disable-rtc.dtso | 15 +++++++++++++++ 2 files changed, 20 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am6xx-phycore-disable-rtc.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index 14c7377cb9b0..6c816446df8f 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -59,6 +59,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am64-tqma64xxl-mbax4xxl-wlan.dtbo # Common overlays for the phyCORE-AM6* family of boards dtb-$(CONFIG_ARCH_K3) += k3-am6xx-phycore-disable-eth-phy.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-am6xx-phycore-disable-rtc.dtbo # Boards with AM65x SoC k3-am654-gp-evm-dtbs := k3-am654-base-board.dtb \ @@ -121,6 +122,8 @@ k3-am625-phyboard-lyra-1-4-ghz-opp.dtbs := k3-am625-phyboard-lyra-rdk.dtb \ k3-am625-phyboard-lyra-1-4-ghz-opp.dtbo k3-am625-phyboard-lyra-disable-eth-phy-dtbs := k3-am625-phyboard-lyra-rdk.dtb \ k3-am6xx-phycore-disable-eth-phy.dtbo +k3-am625-phyboard-lyra-disable-rtc-dtbs := k3-am625-phyboard-lyra-rdk.dtb \ + k3-am6xx-phycore-disable-rtc.dtbo k3-am625-phyboard-lyra-gpio-fan-dtbs := k3-am625-phyboard-lyra-rdk.dtb \ k3-am62x-phyboard-lyra-gpio-fan.dtbo k3-am625-sk-csi2-imx219-dtbs := k3-am625-sk.dtb \ @@ -150,6 +153,8 @@ k3-am642-evm-icssg1-dualemac-mii-dtbs := \ k3-am642-evm.dtb k3-am642-evm-icssg1-dualemac-mii.dtbo k3-am642-phyboard-electra-disable-eth-phy-dtbs := \ k3-am642-phyboard-electra-rdk.dtb k3-am6xx-phycore-disable-eth-phy.dtbo +k3-am642-phyboard-electra-disable-rtc-dtbs := \ + k3-am642-phyboard-electra-rdk.dtb k3-am6xx-phycore-disable-rtc.dtbo k3-am642-phyboard-electra-gpio-fan-dtbs := \ k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-gpio-fan.dtbo k3-am642-phyboard-electra-pcie-usb2-dtbs := \ diff --git a/arch/arm64/boot/dts/ti/k3-am6xx-phycore-disable-rtc.dtso b/arch/arm64/boot/dts/ti/k3-am6xx-phycore-disable-rtc.dtso new file mode 100644 index 000000000000..8b24191f5948 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am6xx-phycore-disable-rtc.dtso @@ -0,0 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* + * Copyright (C) 2023 PHYTEC America, LLC + * Author: Garrett Giordano + * + * Copyright (C) 2024 PHYTEC America, LLC + * Author: Nathan Morrisson + */ + +/dts-v1/; +/plugin/; + +&i2c_som_rtc { + status = "disabled"; +}; -- 2.25.1