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Message-ID: <ZyxppoSeZhOQ8h2L@apocalypse>
Date: Thu, 7 Nov 2024 08:17:58 +0100
From: Andrea della Porta <andrea.porta@...e.com>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc: 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>,
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: Re: [PATCH v3 04/12] dt-bindings: misc: Add device specific bindings
for RaspberryPi RP1
Hi Manivannan,
On 14:50 Wed 06 Nov , Manivannan Sadhasivam wrote:
> On Mon, Oct 28, 2024 at 03:07:21PM +0100, Andrea della Porta wrote:
> > 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 | 80 +++++++++++++++++++
> > MAINTAINERS | 1 +
> > 2 files changed, 81 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..d66b2fc130d1
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/misc/pci1de4,1.yaml
> > @@ -0,0 +1,80 @@
> > +# 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
> > +
> > + '#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
> > +
> > +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>;
>
> Could you please have the 'ranges' in a single line as used everywhere?
>
> - Mani
Sure.
Many thanks,
Andrea
>
> > + #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";
> > + };
> > + };
> > + };
> > + };
> > 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
> >
>
> --
> மணிவண்ணன் சதாசிவம்
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