Re: [RFC PATCH v1 1/2] dt-bindings: usb: samsung,exynos-xhci: support Samsung Exynos xHCI Controller

From: Jung Daehwan <dh10.jung@samsung.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Alim Akhtar <alim.akhtar@samsung.com>,
	Mathias Nyman <mathias.nyman@intel.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Linus Walleij <linus.walleij@linaro.org>,
	Colin Ian King <colin.i.king@gmail.com>,
	Artur Bujdoso <artur.bujdoso@gmail.com>,
	Juergen Gross <jgross@suse.com>,
	Tomer Maimon <tmaimon77@gmail.com>,
	"open list:USB SUBSYSTEM" <linux-usb@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@vger.kernel.org>,
	"moderated list:ARM/SAMSUNG S3C,
	S5P AND EXYNOS ARM ARCHITECTURES" 
	<linux-arm-kernel@lists.infradead.org>,
	"open list:ARM/SAMSUNG S3C,
	S5P AND EXYNOS ARM ARCHITECTURES" 
	<linux-samsung-soc@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>,
	sc.suh@samsung.com, taehyun.cho@samsung.com,
	jh0801.jung@samsung.com, eomji.oh@samsung.com
Subject: Re: [RFC PATCH v1 1/2] dt-bindings: usb: samsung,exynos-xhci: support Samsung Exynos xHCI Controller
Date: Mon, 5 Dec 2022 11:06:50 +0900	[thread overview]
Message-ID: <20221205020634.GA54922@ubuntu> (raw)
In-Reply-To: <e140fdfd-4d8b-7214-d264-0503e6fcc498@linaro.org>

[-- Attachment #1: Type: text/plain, Size: 1896 bytes --]

On Thu, Dec 01, 2022 at 09:59:06AM +0100, Krzysztof Kozlowski wrote:
> On 01/12/2022 03:13, Daehwan Jung wrote:
> > Add the Samsung Exynos xHCI Controller bindings with DT schema format.
> > 
> > Signed-off-by: Daehwan Jung <dh10.jung@samsung.com>
> > ---
> >  .../bindings/usb/samsung,exynos-xhci.yaml     | 25 +++++++++++++++++++
> >  1 file changed, 25 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/usb/samsung,exynos-xhci.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/usb/samsung,exynos-xhci.yaml b/Documentation/devicetree/bindings/usb/samsung,exynos-xhci.yaml
> > new file mode 100644
> > index 000000000000..c5dde53b6491
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/usb/samsung,exynos-xhci.yaml
> > @@ -0,0 +1,25 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: https://protect2.fireeye.com/v1/url?k=7899b46f-19e45c17-78983f20-74fe485fffb1-728a1b33a5d009dd&q=1&e=bdc50247-e986-43da-a15e-03ac6c3a25e8&u=http%3A%2F%2Fdevicetree.org%2Fschemas%2Fusb%2Fsamsung%2Cexynos-xhci.yaml%23
> > +$schema: https://protect2.fireeye.com/v1/url?k=ea1282f0-8b6f6a88-ea1309bf-74fe485fffb1-536f21757c62f28b&q=1&e=bdc50247-e986-43da-a15e-03ac6c3a25e8&u=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
> > +
> > +title: Samsung Exynos xHCI
> > +
> > +maintainers:
> > +  - Daehwan Jung <dh10.jung@samsung.com>
> > +
> > +properties:
> > +  compatible:
> > +    const: samsung,exynos-xhci
> > +
> > +required:
> > +  - compatible
> > +
> > +additionalProperties: false
> > +
> 
> These do not look like complete bindings... What type of device has no
> resources at all, just compatible?
> 
> Best regards,
> Krzysztof
> 
>

It gets resources from dwc->xhci_resources as you can see
dwc3_host_init(usb/dwc3/host.c). I think it doesn't need to get another resource.

Best Regards,
Jung Daehwan

[-- Attachment #2: Type: text/plain, Size: 0 bytes --]