linux-kernel - Re: [PATCH] ARM: zynq: Move of_clk

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Date:	Wed, 05 Feb 2014 16:52:02 +0100
From:	Michal Simek <monstr@...str.eu>
To:	Sören Brinkmann <soren.brinkmann@...inx.com>
CC:	Michal Simek <michal.simek@...inx.com>,
	linux-arm-kernel@...ts.infradead.org,
	Josh Cartwright <josh.cartwright@...com>,
	Steffen Trumtrar <s.trumtrar@...gutronix.de>,
	Rob Herring <robherring2@...il.com>,
	Peter Crosthwaite <peter.crosthwaite@...inx.com>,
	Russell King <linux@....linux.org.uk>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Stephen Warren <swarren@...dia.com>,
	James Hogan <james.hogan@...tec.com>,
	Felipe Pena <felipensp@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: zynq: Move of_clk_init from clock driver

On 02/05/2014 04:41 PM, Sören Brinkmann wrote:
> On Wed, Feb 05, 2014 at 03:56:37PM +0100, Michal Simek wrote:
>> Move of_clk_init() from clock driver to enable
>> options not to use zynq clock driver.
>> Use for example fixed clock setting.
> What is the use-case? Zynq w/o this driver makes no sense, IMHO. And
> even if you wanna fake clocks, why would this driver prevent it? Just
> replace all the input clocks with different ones and don't care about
> what this driver does?

One case is supervisor for example.

> 
>>
>> Signed-off-by: Michal Simek <michal.simek@...inx.com>
>> ---
>>
>> Based on http://www.spinics.net/lists/arm-kernel/msg298287.html
>> series
>>
>> ---
>>  arch/arm/mach-zynq/common.c | 1 +
>>  drivers/clk/zynq/clkc.c     | 2 --
>>  2 files changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
>> index 93ea19b..8df35f3 100644
>> --- a/arch/arm/mach-zynq/common.c
>> +++ b/arch/arm/mach-zynq/common.c
>> @@ -68,6 +68,7 @@ static void __init zynq_timer_init(void)
>>  	zynq_early_slcr_init();
>>
>>  	zynq_clock_init();
>> +	of_clk_init(NULL);
> Now you have two clock init functions...

If I have two clock init functions now, what I had before?
You were calling of_clk_init from zynq_clock_init.

Thanks,
Michal

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform



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