From mboxrd@z Thu Jan 1 00:00:00 1970 From: thomas.petazzoni@free-electrons.com (Thomas Petazzoni) Date: Tue, 11 Feb 2014 17:32:03 +0100 Subject: [PATCH v2] clk: respect the clock dependencies in of_clk_init In-Reply-To: <1392054179-28830-1-git-send-email-gregory.clement@free-electrons.com> References: <1392054179-28830-1-git-send-email-gregory.clement@free-electrons.com> Message-ID: <20140211173203.4e6c7b22@skate> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello, On Mon, 10 Feb 2014 18:42:59 +0100, Gregory CLEMENT wrote: > Until now the clock providers were initialized in the order found in > the device tree. This led to have the dependencies between the clocks > not respected: children clocks could be initialized before their > parent clocks. > > Instead of forcing each platform to manage its own initialization order, > this patch adds this work inside the framework itself. > > Using the data of the device tree the of_clk_init function now delayed > the initialization of a clock provider if its parent provider was not > ready yet. > > The strict dependency check (all parents of a given clk must be > initialized) was added by Boris BREZILLON > > Signed-off-by: Gregory CLEMENT > --- > > Since the v1, I have merged the strict dependency check from Boris. > And of course tested on my Armada 370 and Armada XP based board > > drivers/clk/clk.c | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++-- > 1 file changed, 106 insertions(+), 3 deletions(-) Tested-by: Thomas Petazzoni On the newly proposed Armada 375 platform. Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com