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

Andrea della Porta
2024-10-28T14:07:27Z

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>
---
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@suse.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@c040018000 {
+ 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@c0400d0000 {
+ 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