linux-kernel - Re: [PATCH 2/2] clk: Add Fixed MMIO clock driver

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Message-ID: <154360417873.88331.512675786310551936@swboyd.mtv.corp.google.com>
Date:   Fri, 30 Nov 2018 10:56:18 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     Janek Kotas <jank@...ence.com>
Cc:     "mark.rutland@....com" <mark.rutland@....com>,
        "mturquette@...libre.com" <mturquette@...libre.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] clk: Add Fixed MMIO clock driver

Quoting Janek Kotas (2018-11-30 01:57:09)
> 
> I tried it. io_remap doesn’t allow RAM to be mapped,
> even if it’s marked as a reserved memory.
> I got an error, the address couldn’t be mapped.
> 
> ARM64’s memory management has an explicit check for this here:
> https://elixir.bootlin.com/linux/latest/source/arch/arm64/mm/ioremap.c#L55
> 

Ok. Thanks!