linux-kernel - Re: [PATCH v2 03/12] dt-bindings: connector: Add the GOcontroll Moduline module slot bindings

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Message-ID: <20250317-massive-calm-bat-43ff61@krzk-bin>
Date: Mon, 17 Mar 2025 11:34:48 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Maud Spierings | GOcontroll <maudspierings@...ontroll.com>
Cc: Rob Herring <robh@...nel.org>, 
	Neil Armstrong <neil.armstrong@...aro.org>, Jessica Zhang <quic_jesszhan@...cinc.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 
	Simona Vetter <simona@...ll.ch>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Thierry Reding <thierry.reding@...il.com>, 
	Sam Ravnborg <sam@...nborg.org>, Liu Ying <victor.liu@....com>, Shawn Guo <shawnguo@...nel.org>, 
	Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>, 
	Fabio Estevam <festevam@...il.com>, Mark Brown <broonie@...nel.org>, 
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>, 
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>
Subject: Re: [PATCH v2 03/12] dt-bindings: connector: Add the GOcontroll
 Moduline module slot bindings

On Sat, Mar 15, 2025 at 07:32:28AM +0000, Maud Spierings | GOcontroll wrote:
> >> +required:
> >> +  - compatible
> >> +  - reg
> >> +  - reset-gpios
> >> +  - interrupts
> >> +  - sync-gpios
> >> +  - i2c-bus
> >> +  - slot-number
> >> +
> >> +additionalProperties: false
> >> +
> >> +examples:
> >> +  - |
> >> +    #include <dt-bindings/gpio/gpio.h>
> >> +    #include <dt-bindings/interrupt-controller/irq.h>
> >> +
> >> +    spi {
> >> +        #address-cells = <1>;
> >> +        #size-cells = <0>;
> >> +
> >> +        connector@0 {
> >
> >I find this being a SPI device a bit strange. Is there a defined SPI
> >device that every slot is going to have? Or the connector has SPI
> >interface and *anything* could be attached on it?
> 
> So a module slot is like a pcie slot, it can be occupied or not, and when

But which buses...

Best regards,
Krzysztof