linux-kernel - Re: [PATCH 00/13] Add USB support to Exynos7885

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Message-ID: <229538e5-f9db-4f2f-a0ac-13ecb7d3f7ba@kernel.org>
Date: Mon, 5 Aug 2024 07:45:09 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: David Virag <virag.david003@...il.com>, 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>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Alim Akhtar <alim.akhtar@...sung.com>,
 Sylwester Nawrocki <s.nawrocki@...sung.com>,
 Chanwoo Choi <cw00.choi@...sung.com>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
 André Draszik <andre.draszik@...aro.org>,
 Peter Griffin <peter.griffin@...aro.org>,
 Sam Protsenko <semen.protsenko@...aro.org>,
 Marek Szyprowski <m.szyprowski@...sung.com>
Cc: linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
 linux-clk@...r.kernel.org
Subject: Re: [PATCH 00/13] Add USB support to Exynos7885

On 04/08/2024 23:53, David Virag wrote:
> This set of patches adds support for USB on the Exynos7885 SoC.
> 
> The Exynos7885 has a DWC3 compatible USB controller and an Exynos USB
> PHY that theoretically supports USB3 SuperSpeed, but is not implemented
> in any known device. The vendor kernel also stubs out USB3 functions, so
> we do not support it.
> 
> While at it, since we need some new clocks implemented, also fix some
> issues with the existing clock driver/bindings.
> 
> p.s.: Not realizing the USB PLL has a MUX on it made me waste I don't
> even want to know how much time on troubleshooting why it's not
> working...

If there is going to be any new version, please split between subsystems
into: clock+DTS, phy and usb.

Best regards,
Krzysztof