linux-kernel - Re: [PATCH v3 02/10] phy: rockchip: add usbdp combo phy driver

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Message-ID: <1891069.1xdlsreqCQ@diego>
Date: Wed, 28 Feb 2024 12:53:59 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
 linux-rockchip@...ts.infradead.org, linux-phy@...ts.infradead.org,
 Sebastian Reichel <sebastian.reichel@...labora.com>
Cc: Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Frank Wang <frank.wang@...k-chips.com>,
 Kever Yang <kever.yang@...k-chips.com>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org,
 Sebastian Reichel <sebastian.reichel@...labora.com>, kernel@...labora.com,
 Zhang Yubing <yubing.zhang@...k-chips.com>
Subject: Re: [PATCH v3 02/10] phy: rockchip: add usbdp combo phy driver

Am Freitag, 16. Februar 2024, 18:01:17 CET schrieb Sebastian Reichel:
> This adds a new USBDP combo PHY with Samsung IP block driver.
> 
> The driver get lane mux and mapping info in 2 ways, supporting
> DisplayPort alternate mode or parsing from DT. When parsing from DT,
> the property "rockchip,dp-lane-mux" provide the DP mux and mapping
> info. This is needed when the PHY is not used with TypeC Alt-Mode.
> For example if the USB3 interface of the PHY is connected to a USB
> Type A connector and the DP interface is connected to a DisplayPort
> connector.
> 
> When do DP link training, need to set lane number, link rate, swing,
> and pre-emphasis via PHY configure interface.
> 
> Co-developed-by: Heiko Stuebner <heiko@...ech.de>
> Signed-off-by: Heiko Stuebner <heiko@...ech.de>
> Co-developed-by: Zhang Yubing <yubing.zhang@...k-chips.com>
> Signed-off-by: Zhang Yubing <yubing.zhang@...k-chips.com>
> Co-developed-by: Frank Wang <frank.wang@...k-chips.com>
> Signed-off-by: Frank Wang <frank.wang@...k-chips.com>
> Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>

Not sure how that relates to me being listed a Co-developer, but this
works nicely on both rk3588-jaguar (real type-c) and rk3588-tiger-haikou
(micro-usb3 as dual-role port and usb3-a host port), so

Tested-by: Heiko Stuebner <heiko@...ech.de>

It would be nice if patches 1+2 could go through the phy-tree and I'd
be able to pick up the devicetree patches after that, to minimize conflict


Thanks
Heiko