From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@linaro.org>
Subject: Re: [PATCH v2 2/3] xen/arm: Add new driver for R-Car
	Gen2 UART
Date: Thu, 22 Jan 2015 16:49:06 +0000
Message-ID: <54C12A02.8000003@linaro.org>
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To: Oleksandr Tyshchenko <oleksandr.tyshchenko@globallogic.com>
Cc: Iurii Konovalenko <iurii.konovalenko@globallogic.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Tim Deegan <tim@xen.org>, Ian Campbell <ian.campbell@citrix.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
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On 22/01/15 16:44, Oleksandr Tyshchenko wrote:
> I understand, then I will implement local delay func in uart driver
> based on READ_SYSREG64(CNTPCT_EL0).

Unless I miss something, udelay should work in your case even if the
xen_init_time is not called.

Regards,

-- 
Julien Grall