linux-kernel - Re: [PATCH v3 5/5] usb: dwc3-am62: add workaround for Errata i2409

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Date: Wed, 14 Feb 2024 12:27:08 +0100
From: Andrejs Cainikovs <andrejs.cainikovs@...il.com>
To: b-liu@...com
Cc: afd@...com,
	conor+dt@...nel.org,
	conor@...nel.org,
	devicetree@...r.kernel.org,
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	Andrejs Cainikovs <andrejs.cainikovs@...adex.com>
Subject: Re: [PATCH v3 5/5] usb: dwc3-am62: add workaround for Errata i2409

> All AM62 devices have Errata i2409 [1] due to which
> USB2 PHY may lock up due to short suspend.
> 
> Workaround involves setting bit 5 and 4 PLL_REG12
> in PHY2 register space after USB controller is brought
> out of LPSC reset but before controller initialization.
> 
> Handle this workaround.

Tested-by: Andrejs Cainikovs <andrejs.cainikovs@...adex.com>

You have requested [1] to check whether this patch
fixes issues I observed, and I can confirm it does.

[1]: https://lore.kernel.org/all/2629cd30-23aa-4f03-8452-ae13297fd6b6@kernel.org/