Re: [PATCH v8 06/13] phy: tegra: xusb: Add sleepwalk and suspend/resume

Vinod Koul
2021-03-30T14:24:41Z

On 25-03-21, 17:40, Thierry Reding wrote:
> From: JC Kuo <jckuo@nvidia.com>
>
> This commit adds sleepwalk/wake and suspend/resume interfaces
> to Tegra XUSB PHY driver.
>
> Tegra XUSB host controller driver makes use of sleepwalk functions
> to enable/disable sleepwalk circuit which is in always-on partition
> and can respond to USB resume signals when controller is not powered.
> Sleepwalk can be enabled/disabled for any USB UPHY individually.
>
> - tegra_xusb_padctl_enable_phy_sleepwalk()
> - tegra_xusb_padctl_disable_phy_sleepwalk()
>
> Tegra XUSB host controller driver makes use of wake functions to
> enable/disable/query wake circuit which is in always-on partition
> can wake system up when USB resume happens.
> Wake circuit can be enabled/disabled for any USB PHY individually.
>
> - tegra_xusb_padctl_enable_phy_wake()
> - tegra_xusb_padctl_disable_phy_wake()
> - tegra_xusb_padctl_remote_wake_detected()
>
> This commit also adds two system suspend stubs that can be used to
> save and restore XUSB PADCTL context during system suspend and
> resume.
> - tegra_xusb_padctl_suspend_noirq()
> - tegra_xusb_padctl_resume_noirq()

Acked-By: Vinod Koul <vkoul@kernel.org>

--
~Vinod