Re: [PATCH v3 2/5] usb: phy: Workaround for USB erratum-A005728

2019-01-23 Thread Alan Stern
On Wed, 23 Jan 2019, Yinbo Zhu wrote: > From: Suresh Gupta > > PHY_CLK_VALID bit for UTMI PHY in USBDR does not set even > if PHY is providing valid clock. Workaround for this > involves resetting of PHY and check PHY_CLK_VALID bit > multiple times. If PHY_CLK_VALID bit is still not set even >

[PATCH v3 2/5] usb: phy: Workaround for USB erratum-A005728

2019-01-22 Thread Yinbo Zhu
From: Suresh Gupta PHY_CLK_VALID bit for UTMI PHY in USBDR does not set even if PHY is providing valid clock. Workaround for this involves resetting of PHY and check PHY_CLK_VALID bit multiple times. If PHY_CLK_VALID bit is still not set even after 5 retries, it would be safe to deaclare that