From: Andrea della Porta <andrea.porta@suse.com>
Date: Thu, 29 May 2025 13:50:43 +0000 (+0200)
Subject: arm64: dts: rp1: Add support for RaspberryPi's RP1 device
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eed7414420283d830ab576f32a5e3e5792c6fd77;p=thirdparty%2Flinux.git

arm64: dts: rp1: Add support for RaspberryPi's RP1 device

RaspberryPi RP1 is a multi function PCI endpoint device that
exposes several subperipherals via PCI BAR.

Add a dtb overlay that will be compiled into a binary blob
and linked in the RP1 driver.

This overlay offers just minimal support to represent the
RP1 device itself, the sub-peripherals will be added by
future patches.

Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20250529135052.28398-6-andrea.porta@suse.com
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
---

diff --git a/arch/arm64/boot/dts/broadcom/rp1-common.dtsi b/arch/arm64/boot/dts/broadcom/rp1-common.dtsi
new file mode 100644
index 0000000000000..5002a375eb0b2
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/rp1-common.dtsi
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clock/raspberrypi,rp1-clocks.h>
+
+pci_ep_bus: pci-ep-bus@1 {
+	compatible = "simple-bus";
+	ranges = <0x00 0x40000000  0x01 0x00 0x00000000  0x00 0x00400000>;
+	dma-ranges = <0x10 0x00000000  0x43000000 0x10 0x00000000  0x10 0x00000000>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	rp1_clocks: clocks@40018000 {
+		compatible = "raspberrypi,rp1-clocks";
+		reg = <0x00 0x40018000 0x0 0x10038>;
+		#clock-cells = <1>;
+		clocks = <&clk_rp1_xosc>;
+		assigned-clocks = <&rp1_clocks RP1_PLL_SYS_CORE>,
+				  <&rp1_clocks RP1_PLL_SYS>,
+				  <&rp1_clocks RP1_PLL_SYS_SEC>,
+				  <&rp1_clocks RP1_CLK_SYS>;
+		assigned-clock-rates = <1000000000>, // RP1_PLL_SYS_CORE
+				       <200000000>,  // RP1_PLL_SYS
+				       <125000000>,  // RP1_PLL_SYS_SEC
+				       <200000000>;  // RP1_CLK_SYS
+	};
+
+	rp1_gpio: pinctrl@400d0000 {
+		compatible = "raspberrypi,rp1-gpio";
+		reg = <0x00 0x400d0000  0x0 0xc000>,
+		      <0x00 0x400e0000  0x0 0xc000>,
+		      <0x00 0x400f0000  0x0 0xc000>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		interrupts = <0 IRQ_TYPE_LEVEL_HIGH>,
+			     <1 IRQ_TYPE_LEVEL_HIGH>,
+			     <2 IRQ_TYPE_LEVEL_HIGH>;
+	};
+};
diff --git a/arch/arm64/boot/dts/broadcom/rp1-nexus.dtsi b/arch/arm64/boot/dts/broadcom/rp1-nexus.dtsi
new file mode 100644
index 0000000000000..0ef30d7f1c352
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/rp1-nexus.dtsi
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+rp1_nexus {
+	compatible = "pci1de4,1";
+	#address-cells = <3>;
+	#size-cells = <2>;
+	ranges = <0x01 0x00 0x00000000
+		  0x02000000 0x00 0x00000000
+		  0x0 0x400000>;
+	interrupt-controller;
+	#interrupt-cells = <2>;
+
+	#include "rp1-common.dtsi"
+};