[PATCH v8 04/13] dt-bindings: misc: Add device specific bindings for RaspberryPi RP1

Andrea della Porta
2025-03-19T22:03:41Z

The RP1 is a MFD that exposes its peripherals through PCI BARs. This
schema is intended as minimal support for the clock generator and
gpio controller peripherals which are accessible through BAR1.

Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
---
.../devicetree/bindings/misc/pci1de4,1.yaml | 137 ++++++++++++++++++
1 file changed, 137 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/pci1de4,1.yaml

diff --git a/Documentation/devicetree/bindings/misc/pci1de4,1.yaml b/Documentation/devicetree/bindings/misc/pci1de4,1.yaml
new file mode 100644
index 000000000000..2f9a7a554ed8
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/pci1de4,1.yaml
@@ -0,0 +1,137 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/pci1de4,1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RaspberryPi RP1 MFD PCI device
+
+maintainers:
+ - A. della Porta <andrea.porta@suse.com>
+
+description:
+ The RaspberryPi RP1 is a PCI multi function device containing
+ peripherals ranging from Ethernet to USB controller, I2C, SPI
+ and others.
+ The peripherals are accessed by addressing the PCI BAR1 region.
+
+allOf:
+ - $ref: /schemas/pci/pci-ep-bus.yaml
+
+properties:
+ compatible:
+ additionalItems: true
+ maxItems: 3
+ items:
+ - const: pci1de4,1
+
+ '#interrupt-cells':
+ const: 2
+ description: |
+ Specifies respectively the interrupt number and flags as defined
+ in include/dt-bindings/interrupt-controller/irq.h.
+ Since all interrupts are active high, only IRQ_TYPE_LEVEL_HIGH
+ and IRQ_TYPE_EDGE_RISING can be specified as type flags.
+ The supported values for the interrupt number are:
+ - IO BANK0: 0
+ - IO BANK1: 1
+ - IO BANK2: 2
+ - AUDIO IN: 3
+ - AUDIO OUT: 4
+ - PWM0: 5
+ - ETH: 6
+ - I2C0: 7
+ - I2C1: 8
+ - I2C2: 9
+ - I2C3: 10
+ - I2C4: 11
+ - I2C5: 12
+ - I2C6: 13
+ - I2S0: 14
+ - I2S1: 15
+ - I2S2: 16
+ - SDIO0: 17
+ - SDIO1: 18
+ - SPI0: 19
+ - SPI1: 20
+ - SPI2: 21
+ - SPI3: 22
+ - SPI4: 23
+ - SPI5: 24
+ - UART0: 25
+ - TIMER0: 26
+ - TIMER1: 27
+ - TIMER2: 28
+ - TIMER3: 29
+ - USB HOST0: 30
+ - USB HOST0-0: 31
+ - USB HOST0-1: 32
+ - USB HOST0-2: 33
+ - USB HOST0-3: 34
+ - USB HOST1: 35
+ - USB HOST1-0: 36
+ - USB HOST1-1: 37
+ - USB HOST1-2: 38
+ - USB HOST1-3: 39
+ - DMA: 40
+ - PWM1: 41
+ - UART1: 42
+ - UART2: 43
+ - UART3: 44
+ - UART4: 45
+ - UART5: 46
+ - MIPI0: 47
+ - MIPI1: 48
+ - VIDEO OUT: 49
+ - PIO0: 50
+ - PIO1: 51
+ - ADC FIFO: 52
+ - PCIE OUT: 53
+ - SPI6: 54
+ - SPI7: 55
+ - SPI8: 56
+ - PROC MISC: 57
+ - SYSCFG: 58
+ - CLOCKS DEFAULT: 59
+ - VBUSCTRL: 60
+
+ interrupt-controller: true
+
+unevaluatedProperties: false
+
+required:
+ - compatible
+ - '#interrupt-cells'
+ - interrupt-controller
+ - pci-ep-bus@1
+
+examples:
+ - |
+ pci {
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ rp1@0,0 {
+ compatible = "pci1de4,1";
+ ranges = <0x01 0x00 0x00000000 0x82010000 0x00 0x00 0x00 0x400000>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ 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>;
+ };
+ };
+ };
+ };
--
2.35.3