linux-kernel - [PATCH v3 09/12] arm64: dts: rp1: Add support for RaspberryPi's RP1 device

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Message-ID: <1f4cec50493ec5d3168735c0a005771787e5cd59.1730123575.git.andrea.porta@suse.com>
Date: Mon, 28 Oct 2024 15:07:26 +0100
From: Andrea della Porta <andrea.porta@...e.com>
To: Andrea della Porta <andrea.porta@...e.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczynski <kw@...ux.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Derek Kiernan <derek.kiernan@....com>,
	Dragan Cvetic <dragan.cvetic@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Saravana Kannan <saravanak@...gle.com>,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>,
	Stefan Wahren <wahrenst@....net>,
	Herve Codina <herve.codina@...tlin.com>,
	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Andrew Lunn <andrew@...n.ch>
Subject: [PATCH v3 09/12] 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@...e.com>
---
NOTE: this patch should be taken by the same maintainer that will take
"[PATCH v3 10/12] misc: rp1: RaspberryPi RP1 misc driver", since they
are closely related in terms of compiling.

 MAINTAINERS                           |  1 +
 arch/arm64/boot/dts/broadcom/rp1.dtso | 61 +++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100644 arch/arm64/boot/dts/broadcom/rp1.dtso

diff --git a/MAINTAINERS b/MAINTAINERS
index 06277969a522..510a071ede78 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19383,6 +19383,7 @@ F:	include/uapi/linux/media/raspberrypi/
 RASPBERRY PI RP1 PCI DRIVER
 M:	Andrea della Porta <andrea.porta@...e.com>
 S:	Maintained
+F:	arch/arm64/boot/dts/broadcom/rp1.dtso
 F:	Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml
 F:	Documentation/devicetree/bindings/misc/pci1de4,1.yaml
 F:	Documentation/devicetree/bindings/pci/pci-ep-bus.yaml
diff --git a/arch/arm64/boot/dts/broadcom/rp1.dtso b/arch/arm64/boot/dts/broadcom/rp1.dtso
new file mode 100644
index 000000000000..8d1bbf207a30
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/rp1.dtso
@@ -0,0 +1,61 @@
+// 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>
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target-path="";
+		__overlay__ {
+			compatible = "pci1de4,1";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			pci_ep_bus: pci-ep-bus@1 {
+				compatible = "simple-bus";
+				ranges = <0xc0 0x40000000
+					  0x01 0x00 0x00000000
+					  0x00 0x00400000>;
+				dma-ranges = <0x10 0x00000000
+					      0x43000000 0x10 0x00000000
+					      0x10 0x00000000>;
+				#address-cells = <2>;
+				#size-cells = <2>;
+
+				rp1_clocks: clocks@...0018000 {
+					compatible = "raspberrypi,rp1-clocks";
+					reg = <0xc0 0x40018000 0x0 0x10038>;
+					#clock-cells = <1>;
+					clocks = <&clk_rp1_xosc>;
+					clock-names = "xosc";
+					assigned-clocks = <&rp1_clocks RP1_PLL_SYS_CORE>,
+							  <&rp1_clocks RP1_PLL_SYS>,
+							  <&rp1_clocks RP1_CLK_SYS>;
+					assigned-clock-rates = <1000000000>, // RP1_PLL_SYS_CORE
+							       <200000000>,  // RP1_PLL_SYS
+							       <200000000>;  // RP1_CLK_SYS
+				};
+
+				rp1_gpio: pinctrl@...00d0000 {
+					compatible = "raspberrypi,rp1-gpio";
+					reg = <0xc0 0x400d0000  0x0 0xc000>,
+					      <0xc0 0x400e0000  0x0 0xc000>,
+					      <0xc0 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>;
+				};
+			};
+		};
+	};
+};
-- 
2.35.3