linux-kernel - [PATCH V3 1/2] arm64: dts: ti: k3-am62-wakeup: Introduce RTC node

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Message-ID: <20230320165123.80561-2-nm@ti.com>
Date:   Mon, 20 Mar 2023 11:51:22 -0500
From:   Nishanth Menon <nm@...com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Tero Kristo <kristo@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Julien Panis <jpanis@...libre.com>, <bb@...com>,
        <d-gole@...com>, Nishanth Menon <nm@...com>
Subject: [PATCH V3 1/2] arm64: dts: ti: k3-am62-wakeup: Introduce RTC node

Introduce digital RTC node in wakeup domain. Even though this has
no specific battery backup supply, this on-chip RTC is used in
cost-optimized board designs as a wakeup source.

Reviewed-by: Dhruva Gole <d-gole@...com>
Reviewed-by: Bryan Brattlof <bb@...com>
Signed-off-by: Nishanth Menon <nm@...com>
---
Changes since v2:
- Just reviewed-by pickups

V2: https://lore.kernel.org/all/20230315170706.1598977-2-nm@ti.com/
V1: https://lore.kernel.org/all/20230311105850.21811-2-nm@ti.com/

 arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
index 38dced6b4fef..fec81546fbbd 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
@@ -40,4 +40,14 @@ wkup_i2c0: i2c@...00000 {
 		clock-names = "fck";
 		status = "disabled";
 	};
+
+	wkup_rtc0: rtc@...f0000 {
+		compatible = "ti,am62-rtc";
+		reg = <0x00 0x2b1f0000 0x00 0x100>;
+		interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&k3_clks 117 6> , <&k3_clks 117 0>;
+		clock-names = "vbus", "osc32k";
+		power-domains = <&k3_pds 117 TI_SCI_PD_EXCLUSIVE>;
+		wakeup-source;
+	};
 };
-- 
2.40.0