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Message-ID: <3141e3e7898c1538ea658487923d3446b3d7fd0c.1728300189.git.andrea.porta@suse.com>
Date: Mon, 7 Oct 2024 14:39:47 +0200
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 Wilczyński <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 v2 04/14] dt-bindings: misc: Add device specific bindings for RaspberryPi RP1
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@...e.com>
---
.../devicetree/bindings/misc/pci1de4,1.yaml | 110 ++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 111 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..3f099b16e672
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/pci1de4,1.yaml
@@ -0,0 +1,110 @@
+# 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:
+ - Andrea della Porta <andrea.porta@...e.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:
+ - $ref: /schemas/pci/pci-ep-bus.yaml
+
+properties:
+ compatible:
+ additionalItems: true
+ maxItems: 3
+ items:
+ - const: pci1de4,1
+
+patternProperties:
+ "^pci-ep-bus@[0-2]$":
+ $ref: '#/$defs/bar-bus'
+ description:
+ The bus on which the peripherals are attached, which is addressable
+ through the BAR.
+
+unevaluatedProperties: false
+
+$defs:
+ bar-bus:
+ $ref: /schemas/pci/pci-ep-bus.yaml#/$defs/pci-ep-bus
+ unevaluatedProperties: false
+
+ properties:
+ "#interrupt-cells":
+ const: 2
+ description:
+ Specifies respectively the interrupt number and flags as defined
+ in include/dt-bindings/interrupt-controller/irq.h.
+
+ interrupt-controller: true
+
+ interrupt-parent:
+ description:
+ Must be the phandle of this 'pci-ep-bus' node. It will trigger
+ PCI interrupts on behalf of peripheral generated interrupts.
+
+ patternProperties:
+ "^clocks(@[0-9a-f]+)?$":
+ type: object
+ $ref: /schemas/clock/raspberrypi,rp1-clocks.yaml
+
+ "^ethernet(@[0-9a-f]+)?$":
+ type: object
+ $ref: /schemas/net/cdns,macb.yaml
+
+ "^pinctrl(@[0-9a-f]+)?$":
+ type: object
+ $ref: /schemas/pinctrl/raspberrypi,rp1-gpio.yaml
+
+ required:
+ - interrupt-parent
+ - interrupt-controller
+
+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>;
+
+ 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>;
+ interrupt-controller;
+ interrupt-parent = <&pci_ep_bus>;
+ #interrupt-cells = <2>;
+
+ rp1_clocks: clocks@...0018000 {
+ compatible = "raspberrypi,rp1-clocks";
+ reg = <0xc0 0x40018000 0x0 0x10038>;
+ #clock-cells = <1>;
+ clocks = <&clk_rp1_xosc>;
+ clock-names = "rp1-xosc";
+ };
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index ccf123b805c8..2aea5a6166bd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19384,6 +19384,7 @@ RASPBERRY PI RP1 PCI DRIVER
M: Andrea della Porta <andrea.porta@...e.com>
S: Maintained
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
F: Documentation/devicetree/bindings/pinctrl/raspberrypi,rp1-gpio.yaml
F: include/dt-bindings/clock/rp1.h
--
2.35.3
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