linux-kernel - [PATCH] arm64: dts: zynqmp: Wire mailbox with zynqmp-power driver

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Message-Id: <5d3523150890e494df308ee69523d0f0e7b33b22.1605185549.git.michal.simek@xilinx.com>
Date:   Thu, 12 Nov 2020 13:52:34 +0100
From:   Michal Simek <michal.simek@...inx.com>
To:     linux-kernel@...r.kernel.org, monstr@...str.eu,
        michal.simek@...inx.com, git@...inx.com
Cc:     Kalyani Akula <kalyani.akula@...inx.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Manish Narani <manish.narani@...inx.com>,
        Rajan Vaja <rajan.vaja@...inx.com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] arm64: dts: zynqmp: Wire mailbox with zynqmp-power driver

The support to driver was added by commit ffdbae28d9d1 ("drivers: soc:
xilinx: Use mailbox IPI callback") that's why also enable it via DT by
default. It setups communication with firmware via IPI interface.

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
index 66dad22b8a76..68923fbd0e89 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
+++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
@@ -99,6 +99,29 @@ opp03 {
 		};
 	};
 
+	zynqmp_ipi {
+		compatible = "xlnx,zynqmp-ipi-mailbox";
+		interrupt-parent = <&gic>;
+		interrupts = <0 35 4>;
+		xlnx,ipi-id = <0>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		ipi_mailbox_pmu1: mailbox@...90400 {
+			reg = <0x0 0xff9905c0 0x0 0x20>,
+			      <0x0 0xff9905e0 0x0 0x20>,
+			      <0x0 0xff990e80 0x0 0x20>,
+			      <0x0 0xff990ea0 0x0 0x20>;
+			reg-names = "local_request_region",
+				    "local_response_region",
+				    "remote_request_region",
+				    "remote_response_region";
+			#mbox-cells = <1>;
+			xlnx,ipi-id = <4>;
+		};
+	};
+
 	dcc: dcc {
 		compatible = "arm,dcc";
 		status = "disabled";
@@ -128,6 +151,8 @@ zynqmp_power: zynqmp-power {
 				compatible = "xlnx,zynqmp-power";
 				interrupt-parent = <&gic>;
 				interrupts = <0 35 4>;
+				mboxes = <&ipi_mailbox_pmu1 0>, <&ipi_mailbox_pmu1 1>;
+				mbox-names = "tx", "rx";
 			};
 
 			zynqmp_clk: clock-controller {
-- 
2.29.2