linux-kernel - Re: [PATCH 0/4] clk: mvebu: fix clk init order

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Message-ID: <52E42D6A.5050508@elopez.com.ar>
Date:	Sat, 25 Jan 2014 18:32:26 -0300
From:	Emilio López <emilio@...pez.com.ar>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
CC:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Andrew Lunn <andrew@...n.ch>,
	Mike Turquette <mturquette@...aro.org>,
	Jason Cooper <jason@...edaemon.net>,
	linux-kernel@...r.kernel.org,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 0/4] clk: mvebu: fix clk init order

Hello Sebastian,

El 25/01/14 15:19, Sebastian Hesselbarth escribió:
> This patch set fixes clk init order that went upside-down with
> v3.14. I haven't really investigated what caused this, but I assume
> it is related with DT node reordering by addresses.

The framework should be able to deal with unordered registration. I am 
not very familiar with the mvebu driver though, do you have a valid 
reason to require a specific order?

> Anyway, with v3.14 for MVEBU SoCs, the clock gating driver gets
> registered before core clocks driver. Unfortunately, we cannot
> return -EPROBE_DEFER in drivers initialized by clk_of_init.

Why would you need to do so? After a quick inspection on the code, I see 
you may have problems on mvebu_clk_gating_setup() when getting the 
default parent clock name, but I believe you could solve it in an easier 
way by using of_clk_get_parent_name().

Cheers,

Emilio
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