linux-kernel - Re: [PATCH v6 00/12] ufs: qcom: Add HS-G4 support

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Message-ID: <Y8Y/QX1KzWy2m3v5@matsya>
Date:   Tue, 17 Jan 2023 11:55:05 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     andersson@...nel.org, quic_cang@...cinc.com,
        quic_asutoshd@...cinc.com, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
        dmitry.baryshkov@...aro.org, ahalaney@...hat.com,
        abel.vesa@...aro.org
Subject: Re: [PATCH v6 00/12] ufs: qcom: Add HS-G4 support

On 14-01-23, 12:39, Manivannan Sadhasivam wrote:
> Hello,
> 
> This series adds HS-G4 support to the Qcom UFS driver and PHY driver.
> The newer Qcom platforms support configuring the UFS controller and PHY
> in dual gears (i.e., controller/PHY can be configured to run in two gear
> speeds). This is accomplished by adding two different PHY init sequences
> to the PHY driver and the UFS driver requesting the one that's required
> based on the platform configuration.
> 
> Initially the ufs-qcom driver will use the default gear G2 for enumerating
> the UFS device. Afer enumeration, the max gear supported by both the
> controller and device would be found out and that will be used thereafter.
> But for using the max gear after enumeration, the ufs-qcom driver requires
> the UFS device to be reinitialized. For this purpose, a separate quirk has
> been introduced in the UFS core along with a callback and those will be used
> by the ufs-qcom driver.

Applied, thanks

-- 
~Vinod