From: Stephen Boyd <swboyd@chromium.org>
To: Prashant Malani <pmalani@chromium.org>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
bleung@chromium.org, heikki.krogerus@linux.intel.com,
"Pin-Yen Lin" <treapking@chromium.org>,
"AngeloGioacchino Del Regno"
<angelogioacchino.delregno@collabora.com>,
"Nícolas F . R . A . Prado" <nfraprado@collabora.com>,
"Allen Chen" <allen.chen@ite.com.tw>,
"Andrzej Hajda" <andrzej.hajda@intel.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
"David Airlie" <airlied@linux.ie>,
devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Hsin-Yi Wang" <hsinyi@chromium.org>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"Jonas Karlman" <jonas@kwiboo.se>,
"José Expósito" <jose.exposito89@gmail.com>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>,
"Maxime Ripard" <maxime@cerno.tech>,
"Neil Armstrong" <narmstrong@baylibre.com>,
"Robert Foss" <robert.foss@linaro.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Sam Ravnborg" <sam@ravnborg.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Xin Ji" <xji@analogixsemi.com>
Subject: Re: [PATCH v5 5/9] drm/bridge: anx7625: Add typec_mux_set callback function
Date: Thu, 30 Jun 2022 16:21:40 -0700 [thread overview]
Message-ID: <CAE-0n50Akd8QikGhaAQgxLkJBhE-7KQf5aJ_P2ajOmCjLk555g@mail.gmail.com> (raw)
In-Reply-To: <CACeCKafzB0wW_B2TOEWywLMyB+UhYCpXYDVBV=UbyxBiGnv1Rw@mail.gmail.com>
Quoting Prashant Malani (2022-06-28 13:56:22)
> On Tue, Jun 28, 2022 at 1:40 PM Stephen Boyd <swboyd@chromium.org> wrote:
> >
> > I suppose none of those things matter though as long as there is some
> > typec switch registered here so that the driver can be informed of the
> > pin assignment. Is it right that the "mode-switch" property is only
> > required in DT if this device is going to control the mode of the
> > connector, i.e. USB+DP, or just DP? Where this device can't do that
> > because it doesn't support only DP.
>
> If the anx7625 is used just to route all lanes from 1 usb-c-connector (i.e
> the USB+DP case), a mode-switch wouldn't be of much use, since one
> would also route the CC lines to the built-in PD controller; so it will
> already have knowledge of what mode the switch is in.
>
> The mode-switch is likely only relevant for this hardware configuration(
> it's "DP only" in the sense that the USB pins to the SoC never go anywhere).
> One only has 2 SS lanes each (from each usb-c-connector).
>
> Since there is no CC-line, the anx7625 needs to know which one has DP
> enabled on it.
Can the CC line be "captured" and not actually sent to the anx7625? I
imagine if that is possible, maybe the CC lines would go to some
micro-controller or something that did more typec management things and
then the anx7625 driver would need to do software control of the mode
and orientation control.
next prev parent reply other threads:[~2022-06-30 23:21 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-22 17:34 [PATCH v5 0/9] usb: typec: Introduce typec-switch binding Prashant Malani
2022-06-22 17:34 ` [PATCH v5 1/9] dt-bindings: usb: Add Type-C switch binding Prashant Malani
2022-06-23 18:30 ` Stephen Boyd
2022-06-23 19:08 ` Prashant Malani
2022-06-23 23:14 ` Stephen Boyd
2022-06-24 0:35 ` Prashant Malani
2022-06-24 1:24 ` Prashant Malani
2022-06-24 2:13 ` Stephen Boyd
2022-06-24 2:48 ` Prashant Malani
2022-06-24 19:50 ` Stephen Boyd
2022-06-24 21:41 ` Prashant Malani
2022-06-25 1:21 ` Stephen Boyd
2022-06-25 20:13 ` Krzysztof Kozlowski
2022-06-27 21:04 ` Rob Herring
2022-06-27 21:43 ` Prashant Malani
2022-06-28 18:23 ` Rob Herring
2022-06-29 14:33 ` Pin-yen Lin
2022-06-29 15:00 ` Pin-yen Lin
2022-06-29 17:58 ` Rob Herring
2022-06-29 21:58 ` Stephen Boyd
2022-06-29 22:55 ` Prashant Malani
2022-06-29 23:55 ` Stephen Boyd
2022-06-30 17:10 ` Prashant Malani
2022-07-12 17:45 ` Rob Herring
2022-07-13 21:58 ` Prashant Malani
2022-09-02 7:41 ` Prashant Malani
2022-09-16 18:21 ` Prashant Malani
2022-10-03 3:42 ` Pin-yen Lin
2022-06-22 17:34 ` [PATCH v5 2/9] dt-bindings: drm/bridge: anx7625: Add mode-switch support Prashant Malani
2022-06-22 17:34 ` [PATCH v5 3/9] drm/bridge: anx7625: Register number of Type C switches Prashant Malani
2022-06-22 17:34 ` [PATCH v5 4/9] drm/bridge: anx7625: Register Type-C mode switches Prashant Malani
2022-06-22 17:34 ` [PATCH v5 5/9] drm/bridge: anx7625: Add typec_mux_set callback function Prashant Malani
2022-06-28 19:25 ` Stephen Boyd
2022-06-28 19:48 ` Prashant Malani
2022-06-28 20:40 ` Stephen Boyd
2022-06-28 20:56 ` Prashant Malani
2022-06-30 23:21 ` Stephen Boyd [this message]
2022-06-30 23:38 ` Prashant Malani
2022-07-06 18:26 ` Prashant Malani
2022-07-07 0:17 ` Stephen Boyd
2022-07-12 10:22 ` Pin-yen Lin
2022-06-22 17:34 ` [PATCH v5 6/9] dt/bindings: drm/bridge: it6505: Add mode-switch support Prashant Malani
2022-06-23 18:24 ` Stephen Boyd
2022-06-23 18:37 ` Prashant Malani
2022-06-23 19:08 ` Stephen Boyd
2022-06-23 19:15 ` Prashant Malani
2022-06-22 17:34 ` [PATCH v5 7/9] drm/bridge: it6505: Register number of Type C switches Prashant Malani
2022-06-27 21:05 ` Rob Herring
2022-06-22 17:34 ` [PATCH v5 8/9] drm/bridge: it6505: Register Type-C mode switches Prashant Malani
2022-06-22 17:34 ` [PATCH v5 9/9] drm/bridge: it6505: Add typec_mux_set callback function Prashant Malani
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