linux-kernel - Re: [PATCH v3 06/15] phy: tegra: xusb: Add Tegra210 lane

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Message-ID: <20200928131010.GG3065790@ulmo>
Date:   Mon, 28 Sep 2020 15:10:10 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     JC Kuo <jckuo@...dia.com>
Cc:     gregkh@...uxfoundation.org, robh@...nel.org, jonathanh@...dia.com,
        kishon@...com, linux-tegra@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, nkristam@...dia.com
Subject: Re: [PATCH v3 06/15] phy: tegra: xusb: Add Tegra210 lane_iddq
 operation

On Wed, Sep 09, 2020 at 04:10:32PM +0800, JC Kuo wrote:
> As per Tegra210 TRM, before changing lane assignments, driver should
> keep lanes in IDDQ and sleep state; after changing lane assignments,
> driver should bring lanes out of IDDQ.
> This commit implements the required operations.
> 
> Signed-off-by: JC Kuo <jckuo@...dia.com>
> ---
> v3:
>    add 'misc_ctl2' data member to UPHY lane for carrying MISC_PAD_PX_CTL2 offset
>    tegra210_uphy_lane_iddq_[enable/disable]() to access 'misc_ctl2' data member
>    
>  drivers/phy/tegra/xusb-tegra210.c | 82 ++++++++++++++++++++++++++++---
>  drivers/phy/tegra/xusb.c          |  6 +++
>  drivers/phy/tegra/xusb.h          |  6 +++
>  3 files changed, 86 insertions(+), 8 deletions(-)

Acked-by: Thierry Reding <treding@...dia.com>

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