linux-kernel - Re: [PATCH 0/4] clk: si5351: Some fixes

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Date:	Thu, 30 Apr 2015 13:47:42 -0500
From:	Michael Welling <mwelling@...e.org>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Mike Turquette <mturquette@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Jean-Francois Moine <moinejf@...e.fr>,
	Russell King <rmk+linux@....linux.org.uk>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] clk: si5351: Some fixes

On Thu, Apr 30, 2015 at 07:45:50PM +0200, Sebastian Hesselbarth wrote:
> For Si5351 clock driver, Michael Welling and Jean-Francois Moine reported
> issues with recent v4.x kernels due to broken/missing/wrong parent clock
> claming. This patch set now deals with the issues reported.
> 
> Patch 1 amends the binding documentation mention clock-names property
> for the "xtal" and "clkin" parent clock inputs of Si5351 variants.
> 
> Patch 2 adds the clock-names property for the SolidRun CuBox using Si5351
> with a fixed oscillator connected to "xtal" input.
> 
> Patch 3 reworks the way we claim parent clocks by using devm_clk_get()
> for both DT and platform_data based registration. Also, properly check
> for errors returned by devm_clk_get() and prepare/enable the parent clocks.
> 
> Patch 4 introduces a function to reset PLLs on rate change. This should
> improve generated clock output stability. I currently have no scope at hand
> to actually test that properly, so there may be more issues remaining.
> 
> @Michael, Jean-Francois: Please test and report if there are still
> issues remaining.

I am in the process of testing this patch series.

Hopefully this fixes some issues.

> 
> Sebastian
> 
> Sebastian Hesselbarth (4):
>   clk: si5351: Mention clock-names in the binding documentation
>   ARM: dove: Add clock-names to CuBox Si5351 clk generator
>   clk: si5351: Do not pass struct clk in platform_data
>   clk: si5351: Reset PLL after rate change
> 
>  .../devicetree/bindings/clock/silabs,si5351.txt    |  4 +-
>  arch/arm/boot/dts/dove-cubox.dts                   |  1 +
>  drivers/clk/clk-si5351.c                           | 87 +++++++++++++++++-----
>  include/linux/platform_data/si5351.h               |  4 -
>  4 files changed, 73 insertions(+), 23 deletions(-)
> 
> ---
> Cc: Mike Turquette <mturquette@...aro.org>
> Cc: Stephen Boyd <sboyd@...eaurora.org>
> Cc: Jean-Francois Moine <moinejf@...e.fr>
> Cc: Michael Welling <mwelling@...e.org>
> Cc: Russell King <rmk+linux@....linux.org.uk>
> Cc: Jason Cooper <jason@...edaemon.net>
> Cc: Andrew Lunn <andrew@...n.ch>
> Cc: Gregory Clement <gregory.clement@...e-electrons.com>
> Cc: devicetree@...r.kernel.org
> Cc: linux-clk@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> -- 
> 2.1.0
> 
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