linux-kernel - Re: [PATCH v3 06/10] phy: phy-snps-eusb2: make repeater optional

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Message-ID: <m6uabp57a2kskyspnrz65frcf7dqkljmdeffupqkcni5qbgya7@cwmdcac5eh52>
Date: Fri, 21 Mar 2025 17:13:29 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
Cc: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Abel Vesa <abel.vesa@...aro.org>, linux-arm-msm@...r.kernel.org,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v3 06/10] phy: phy-snps-eusb2: make repeater optional

On Fri, Mar 21, 2025 at 03:58:50PM +0200, Ivaylo Ivanov wrote:
> As described in the device tree bindings, it's not necessary for the
> SNPS eUSB2 phy to be connected to a repeater. In configurations where
> there are such instances, the driver probing fails and the usb
> controller does not work.
> 
> Make the repeater optional to avoid that, which also lets us use
> the eUSB2 phy when it's connected to a repeater that is not configurable
> by the kernel (for example it's missing a driver), as long as it has
> been configured beforehand (usually by the bootloader).
> 
> Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
> Acked-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
>  drivers/phy/phy-snps-eusb2.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>

-- 
With best wishes
Dmitry