[PATCH v2 6/8] arm64: dts: apple: t8103: Add the UART PMGR tree

From: Hector Martin <marcan@marcan.st>
To: linux-arm-kernel@lists.infradead.org
Cc: Hector Martin <marcan@marcan.st>, Marc Zyngier <maz@kernel.org>,
	Rob Herring <robh+dt@kernel.org>, Arnd Bergmann <arnd@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Alyssa Rosenzweig <alyssa@rosenzweig.io>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Mark Kettenis <mark.kettenis@xs4all.nl>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Johan Hovold <johan@kernel.org>,
	devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
	linux-serial@vger.kernel.org,
	Mark Kettenis <kettenis@openbsd.org>
Subject: [PATCH v2 6/8] arm64: dts: apple: t8103: Add the UART PMGR tree
Date: Mon, 25 Oct 2021 23:47:16 +0900	[thread overview]
Message-ID: <20211025144718.157794-7-marcan@marcan.st> (raw)
In-Reply-To: <20211025144718.157794-1-marcan@marcan.st>

Note that the UART driver does not currently support runtime-pm, so this
effectively always keeps the UART0 device on. However, this does clockgate
all the other UARTs, as those are not currently instantiated.

Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Signed-off-by: Hector Martin <marcan@marcan.st>
---
 arch/arm64/boot/dts/apple/t8103.dtsi | 116 +++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
index 9f60f9e48ea0..1d0fac1747c7 100644
--- a/arch/arm64/boot/dts/apple/t8103.dtsi
+++ b/arch/arm64/boot/dts/apple/t8103.dtsi
@@ -122,6 +122,7 @@ serial0: serial@235200000 {
 			 */
 			clocks = <&clkref>, <&clkref>;
 			clock-names = "uart", "clk_uart_baud0";
+			power-domains = <&ps_uart0>;
 			status = "disabled";
 		};
 
@@ -131,5 +132,120 @@ aic: interrupt-controller@23b100000 {
 			interrupt-controller;
 			reg = <0x2 0x3b100000 0x0 0x8000>;
 		};
+
+		pmgr: power-management@23b700000 {
+			compatible = "apple,t8103-pmgr", "apple,pmgr", "syscon", "simple-mfd";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			reg = <0x2 0x3b700000 0x0 0x14000>;
+
+			ps_sio_busif: power-controller@1c0 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x1c0>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "sio_busif";
+			};
+
+			ps_sio: power-controller@1c8 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x1c8>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "sio";
+				power-domains = <&ps_sio_busif>;
+			};
+
+			ps_uart_p: power-controller@220 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x220>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart_p";
+				power-domains = <&ps_sio>;
+			};
+
+			ps_uart0: power-controller@270 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x270>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart0";
+				power-domains = <&ps_uart_p>;
+			};
+
+			ps_uart1: power-controller@278 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x278>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart1";
+				power-domains = <&ps_uart_p>;
+			};
+
+			ps_uart2: power-controller@280 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x280>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart2";
+				power-domains = <&ps_uart_p>;
+			};
+
+			ps_uart3: power-controller@288 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x288>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart3";
+				power-domains = <&ps_uart_p>;
+			};
+
+			ps_uart4: power-controller@290 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x290>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart4";
+				power-domains = <&ps_uart_p>;
+			};
+
+			ps_uart5: power-controller@298 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x298>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart5";
+				power-domains = <&ps_uart_p>;
+			};
+
+			ps_uart6: power-controller@2a0 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x2a0>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart6";
+				power-domains = <&ps_uart_p>;
+			};
+
+			ps_uart7: power-controller@2a8 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x2a8>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart7";
+				power-domains = <&ps_uart_p>;
+			};
+
+			ps_uart8: power-controller@2b0 {
+				compatible = "apple,t8103-pmgr-pwrstate", "apple,pmgr-pwrstate";
+				reg = <0x2b0>;
+				#power-domain-cells = <0>;
+				#reset-cells = <0>;
+				label = "uart8";
+				power-domains = <&ps_uart_p>;
+			};
+		};
 	};
 };
-- 
2.33.0

