linux-kernel - [RFC PATCH 3/3] arm64: dts: imx8mn-bsh-smm-s2/pro: Add pmic clock connection

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Message-Id: <20220605165703.1565234-4-michael@amarulasolutions.com>
Date:   Sun,  5 Jun 2022 18:57:03 +0200
From:   Michael Trimarchi <michael@...rulasolutions.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        "Ariel D'Alessandro" <ariel.dalessandro@...labora.com>,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/FREESCALE IMX
        / MXC ARM ARCHITECTURE), linux-kernel@...r.kernel.org (open list)
Cc:     Dario Binacchi <dario.binacchi@...rulasolutions.com>,
        linux-amarula@...rulasolutions.com,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/FREESCALE IMX
        / MXC ARM ARCHITECTURE), linux-kernel@...r.kernel.org (open list)
Subject: [RFC PATCH 3/3] arm64: dts: imx8mn-bsh-smm-s2/pro: Add pmic clock connection

pmic clock is connected to svns_rtc using RTC_XTALI pin so we
need to mark this clock as critical. The clock source even the
wifi/bluetooth chipset

Signed-off-by: Michael Trimarchi <michael@...rulasolutions.com>
---
 arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
index c11895d9d582..072d2c480f20 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
@@ -28,6 +28,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_usdhc2_pwrseq>;
 		reset-gpios = <&gpio4 27 GPIO_ACTIVE_LOW>;
+		clocks = <&bd71847 0>;
+		clock-names = "ext_clock";
 	};
 };
 
@@ -92,6 +94,7 @@ bd71847: pmic@4b {
 		rohm,reset-snvs-powered;
 
 		#clock-cells = <0>;
+		clock-critical = <1>;
 		clocks = <&osc_32k 0>;
 		clock-output-names = "clk-32k-out";
 
@@ -235,6 +238,8 @@ bluetooth {
 		shutdown-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
 		device-wakeup-gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>;
 		host-wakeup-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+		clocks = <&bd71847 0>;
+		clock-names = "lpo";
 		max-speed = <3000000>;
 	};
 };
-- 
2.25.1