linux-kernel - Re: [PATCH v3 03/15] phy: tegra: xusb: Move usb3 port init for Tegra210

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Date:   Mon, 28 Sep 2020 15:03:28 +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 03/15] phy: tegra: xusb: Move usb3 port init for
 Tegra210

On Wed, Sep 09, 2020 at 04:10:29PM +0800, JC Kuo wrote:
> The programming sequence in tegra210_usb3_port_enable() is required
> for both cold boot and SC7 exit, and must be performed only after
> PEX/SATA UPHY is initialized. Therefore, this commit moves the
> programming sequence to tegra210_usb3_phy_power_on(). PCIE/SATA phy
> .power_on() stub will invoke tegra210_usb3_phy_power_on() if the lane
> is assigned for XUSB super-speed.
> 
> Signed-off-by: JC Kuo <jckuo@...dia.com>
> ---
> v3:
>    new, was a part of "phy: tegra: xusb: Rearrange UPHY init on Tegra210"
> 
>  drivers/phy/tegra/xusb-tegra210.c | 298 +++++++++++++++++-------------
>  drivers/phy/tegra/xusb.c          |   2 +-
>  drivers/phy/tegra/xusb.h          |   2 +
>  3 files changed, 174 insertions(+), 128 deletions(-)

I'm a bit unhappy about the repeated calls to tegra_xusb_lane_check(),
but I don't have any great ideas on how to improve this, so:

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

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