linux-kernel - Re: [PATCH 2/2] phy: rockchip: inno-usb2: add usb2 phy support for rk3562

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Message-ID: <2246672.1BCLMh4Saa@diego>
Date: Tue, 24 Dec 2024 13:29:53 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Kever Yang <kever.yang@...k-chips.com>
Cc: linux-rockchip@...ts.infradead.org,
 Frank Wang <frank.wang@...k-chips.com>,
 William Wu <william.wu@...k-chips.com>,
 Kever Yang <kever.yang@...k-chips.com>, Vinod Koul <vkoul@...nel.org>,
 linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
 Kishon Vijay Abraham I <kishon@...nel.org>,
 linux-arm-kernel@...ts.infradead.org
Subject:
 Re: [PATCH 2/2] phy: rockchip: inno-usb2: add usb2 phy support for rk3562

Am Dienstag, 24. Dezember 2024, 10:42:40 CET schrieb Kever Yang:
> From: Frank Wang <frank.wang@...k-chips.com>
> 
> RK3652 has one USB2.0 PHY with two ports, the OTG port support OTG
> and BC1.2, the SoC provide USB GRF and APB to access the registers.
> 
> This adds vbus detection function control and make the below tuning
> to enhance the usb2-phy SQ for RK3562 SoC.
>  - enable pre-emphasis during non-chirp phase
>  - set HS eye height to 425mv
>  - turn off differential receiver by default to save power
> 
> Signed-off-by: Frank Wang <frank.wang@...k-chips.com>
> Signed-off-by: William Wu <william.wu@...k-chips.com>
> Signed-off-by: Kever Yang <kever.yang@...k-chips.com>

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