linux-kernel - Re: [PATCH v5] clk: tegra: Initialize UTMIPLL when enabling PLLU

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Date:	Tue, 28 Jun 2016 17:30:16 +0100
From:	Jon Hunter <jonathanh@...dia.com>
To:	Rhyland Klein <rklein@...dia.com>,
	Thierry Reding <thierry.reding@...il.com>
CC:	Peter De Schrijver <pdeschrijver@...dia.com>,
	Mike Turquette <mturquette@...libre.com>,
	Stephen Warren <swarren@...dotorg.org>,
	"Stephen Boyd" <sboyd@...eaurora.org>,
	Alexandre Courbot <gnurou@...il.com>,
	"linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Andrew Bresticker" <abrestic@...omium.org>
Subject: Re: [PATCH v5] clk: tegra: Initialize UTMIPLL when enabling PLLU

Hi Rhyland,

On 27/06/16 19:11, Rhyland Klein wrote:
> Jonathan, can you confirm replacing usleep_range(100, 200) with udelay(2) works for you?

Yes for me, using a udelay(2) does seem to work. I have made sure that a
usb device is still detected on the Jetson TX1. However, I am not sure
the best way to test this thoroughly.

If we do make this change it would be good to propagate downstream as
well to get wider testing.

Cheers
Jon

-- 
nvpublic