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From: Marek Vasut <marex@denx.de>
To: dri-devel@lists.freedesktop.org
Cc: Jernej Skrabec <jernej.skrabec@siol.net>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Jonas Karlman <jonas@kwiboo.se>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Thierry Reding <treding@nvidia.com>,
	Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [PATCH 4/4] drm/bridge: tc358767: Add DSI-to-DPI mode support
Date: Mon, 17 Jan 2022 04:02:22 +0100	[thread overview]
Message-ID: <6a05a1eb-3aa6-fe08-7520-e670e7378eed@denx.de> (raw)
In-Reply-To: <20211127032405.283435-4-marex@denx.de>

On 11/27/21 04:24, Marek Vasut wrote:
> The TC358767/TC358867/TC9595 are all capable of operating in multiple
> modes, DPI-to-(e)DP, DSI-to-(e)DP, DSI-to-DPI. Add support for the
> DSI-to-DPI mode.
> 
> This requires skipping most of the (e)DP initialization code, which is
> currently a large part of this driver, hence it is better to have far
> simpler separate tc_dpi_bridge_funcs and their implementation.
> 
> The configuration of DPI output is also much simpler. The configuration
> of the DSI input is rather similar to the other TC bridge chips.
> 
> The Pixel PLL in DPI output mode does not have the 65..150 MHz limitation
> imposed on the (e)DP output mode, so this limitation is skipped to permit
> operating panels with far slower pixel clock, even below 9 MHz. This mode
> of operation of the PLL is valid and tested.
> 
> The detection of bridge mode is now added into tc_probe_bridge_mode(),
> where in case a DPI panel is found on port@1 endpoint@1, the mode is
> assumed to be DSI-to-DPI. If (e)DP is detected on port@2, the mode is
> assumed to be DPI-to-(e)DP.
> 
> The DSI-to-(e)DP mode is not supported due to lack of proper hardware,
> but this would be some sort of mix between the two aforementioned modes.

[...]

Would it be possible to get some feedback on this patchset ?

  reply	other threads:[~2022-01-17  3:02 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-27  3:24 [PATCH 1/4] dt-bindings: display: bridge: tc358867: Document DPI output support Marek Vasut
2021-11-27  3:24 ` Marek Vasut
2021-11-27  3:24 ` [PATCH 2/4] drm/bridge: tc358767: Move hardware init to enable callback Marek Vasut
2021-12-06 18:01   ` Dave Stevenson
2021-12-06 20:24     ` Marek Vasut
2021-12-07 13:34       ` Dave Stevenson
2021-12-07 13:59         ` Marek Vasut
2021-12-07 16:28           ` Dave Stevenson
2021-12-07 16:43             ` Marek Vasut
2021-11-27  3:24 ` [PATCH 3/4] drm/bridge: tc358767: Move bridge endpoint parsing into dedicated function Marek Vasut
2021-11-27  3:24 ` [PATCH 4/4] drm/bridge: tc358767: Add DSI-to-DPI mode support Marek Vasut
2022-01-17  3:02   ` Marek Vasut [this message]
2022-02-03 12:26   ` Maxime Ripard
2021-12-07 16:43 ` [PATCH 1/4] dt-bindings: display: bridge: tc358867: Document DPI output support Laurent Pinchart
2021-12-07 16:43   ` Laurent Pinchart
2021-12-07 16:47   ` Marek Vasut
2021-12-07 16:47     ` Marek Vasut
2021-12-07 17:03     ` Laurent Pinchart
2021-12-07 17:03       ` Laurent Pinchart
2021-12-07 17:32       ` Marek Vasut
2021-12-07 17:32         ` Marek Vasut
2022-02-03 12:23         ` Maxime Ripard
2022-02-03 12:23           ` Maxime Ripard
2022-02-17 20:57           ` Marek Vasut
2022-02-17 20:57             ` Marek Vasut

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