From: Roger Quadros <rogerq@kernel.org>
To: Ravi Gunasekaran <r-gunasekaran@ti.com>, marex@denx.de
Cc: u-boot@lists.denx.de
Subject: Re: [PATCH] usb: cdns3: gadget.c: Set fast access bit
Date: Thu, 11 May 2023 15:10:23 +0300 [thread overview]
Message-ID: <bcb3a56a-ba46-1ccb-dbe7-5d12282a498e@kernel.org> (raw)
In-Reply-To: <20230505121353.23486-1-r-gunasekaran@ti.com>
On 05/05/2023 15:13, Ravi Gunasekaran wrote:
> From: Aswath Govindraju <a-govindraju@ti.com>
>
> When the device port is in a low power state [U3/L2/Not Connected],
> accesses to usb device registers may take a long time. This could lead to
> potential core hang when the controller registers are accessed after the
> port is disabled by setting DEVDS field. Setting the fast register access
> bit ensures that the PHY clock is keeping up in active state.
>
> Therefore, set fast access bit to ensure the accesses to device registers
> are quick even in low power states.
>
> Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
prev parent reply other threads:[~2023-05-11 12:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-05 12:13 [PATCH] usb: cdns3: gadget.c: Set fast access bit Ravi Gunasekaran
2023-05-05 12:32 ` Roger Quadros
2023-05-09 5:58 ` [EXTERNAL] " Ravi Gunasekaran
2023-05-10 9:10 ` Roger Quadros
2023-05-11 5:30 ` Pawel Laszczak
2023-05-11 9:33 ` Ravi Gunasekaran
2023-05-12 4:42 ` Pawel Laszczak
2023-05-11 12:10 ` Roger Quadros [this message]
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