From: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
To: Jon Hunter <jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: Thierry Reding
<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
David Airlie <airlied-cv59FeDIM0c@public.gmane.org>,
Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Alexandre Courbot
<gnurou-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Linus Walleij
<linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH V2 06/11] dt-bindings: i2c: Add support for 'i2c-bus' subnode
Date: Wed, 29 Jun 2016 12:41:14 +0200 [thread overview]
Message-ID: <20160629104114.GB1793@katana> (raw)
In-Reply-To: <1467191877-26017-7-git-send-email-jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
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On Wed, Jun 29, 2016 at 10:17:52AM +0100, Jon Hunter wrote:
> The I2C driver core for boards using device-tree assumes any subnode of
> an I2C adapter in the device-tree blob is an I2C slave device. Although
> this makes complete sense, some I2C adapters may have subnodes which
> are not I2C slaves but subnodes presenting other features. For example
> some Tegra devices have an I2C interface which may share its pins with
> other devices. In order to share these pins using the pinctrl framework,
> it is necessary to add subnodes to the I2C device node that represent
> these pins.
>
> To allow I2C adapters to have non-I2C specific subnodes in device-tree
> that are not parsed by the I2C driver core, add support for an optional
> 'i2c-bus' subnode where I2C slaves can be placed. If the 'i2c-bus'
> subnode is present then all I2C slaves must be placed under this
> subnode.
>
> Signed-off-by: Jon Hunter <jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
> Acked-by: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
> Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Acked-by: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
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next prev parent reply other threads:[~2016-06-29 10:41 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-29 9:17 [PATCH V2 00/11] Add support for Tegra DPAUX pinctrl Jon Hunter
2016-06-29 9:17 ` [PATCH V2 02/11] drm/tegra: Clean-up if probing DPAUX fails Jon Hunter
2016-06-29 9:17 ` [PATCH V2 04/11] dt-bindings: display: Update Tegra DPAUX documentation Jon Hunter
2016-06-29 9:17 ` [PATCH V2 05/11] drm/tegra: Prepare DPAUX for supporting generic PM domains Jon Hunter
2016-06-29 9:17 ` [PATCH V2 06/11] dt-bindings: i2c: Add support for 'i2c-bus' subnode Jon Hunter
[not found] ` <1467191877-26017-7-git-send-email-jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-06-29 10:41 ` Wolfram Sang [this message]
[not found] ` <1467191877-26017-1-git-send-email-jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-06-29 9:17 ` [PATCH V2 01/11] soc/tegra: pmc: Initialise resets associated with a power partition Jon Hunter
[not found] ` <1467191877-26017-2-git-send-email-jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2016-06-30 9:49 ` Thierry Reding
2016-06-29 9:17 ` [PATCH V2 03/11] drm/tegra: Add helper functions for setting up DPAUX pads Jon Hunter
2016-06-29 9:17 ` [PATCH V2 07/11] i2c: core: Add support for 'i2c-bus' subnode Jon Hunter
2016-06-29 9:17 ` [PATCH V2 08/11] dt-bindings: Add bindings for Tegra DPAUX pinctrl driver Jon Hunter
2016-06-29 9:17 ` [PATCH V2 11/11] arm64: tegra: Add DPAUX pinctrl bindings Jon Hunter
2016-06-29 9:17 ` [PATCH V2 09/11] drm/tegra: Add pinctrl support for DPAUX Jon Hunter
2016-06-29 9:17 ` [PATCH V2 10/11] arm64: tegra: Add SOR power-domain node Jon Hunter
2016-06-30 13:25 ` [PATCH V2 00/11] Add support for Tegra DPAUX pinctrl Thierry Reding
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