linux-kernel - Re: [PATCH 1/2 v5] clk/axs10x: Add I2S PLL clock driver

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Date:	Wed, 13 Apr 2016 12:35:38 -0500
From:	Rob Herring <robh@...nel.org>
To:	Jose Abreu <Jose.Abreu@...opsys.com>
Cc:	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-snps-arc@...ts.infradead.org, linux-clk@...r.kernel.org,
	sboyd@...eaurora.org, mturquette@...libre.com,
	CARLOS.PALMINHA@...opsys.com, Vineet.Gupta1@...opsys.com,
	Alexey.Brodkin@...opsys.com
Subject: Re: [PATCH 1/2 v5] clk/axs10x: Add I2S PLL clock driver

On Tue, Apr 12, 2016 at 10:14:22AM +0100, Jose Abreu wrote:
> The ARC SDP I2S clock can be programmed using a
> specific PLL.
> 
> This patch has the goal of adding a clock driver
> that programs this PLL.
> 
> At this moment the rate values are hardcoded in
> a table but in the future it would be ideal to
> use a function which determines the PLL values
> given the desired rate.
> 
> Signed-off-by: Jose Abreu <joabreu@...opsys.com>
> ---
> 
> Changes v4 -> v5:
> * Documentation update (as suggested by Alexey Brodkin)
> * Changed compatible string to "snps,axs10x-i2s-pll-clock" (as suggested by Alexey Brodkin)
> 
> Changes v3 -> v4:
> * Added binding document (as suggested by Stephen Boyd)
> * Minor code style fixes (as suggested by Stephen Boyd)
> * Use ioremap (as suggested by Stephen Boyd)
> * Implement round_rate (as suggested by Stephen Boyd)
> * Change to platform driver (as suggested by Stephen Boyd)
> * Use {readl/writel}_relaxed (as suggested by Vineet Gupta)
> 
> Changes v2 -> v3:
> * Implemented recalc_rate
> 
> Changes v1 -> v2:
> * Renamed folder to axs10x (as suggested by Alexey Brodkin)
> * Added more supported rates
> 
>  .../bindings/clock/axs10x-i2s-pll-clock.txt        |  17 ++

Acked-by: Rob Herring <robh@...nel.org>

>  drivers/clk/Makefile                               |   1 +
>  drivers/clk/axs10x/Makefile                        |   1 +
>  drivers/clk/axs10x/i2s_pll_clock.c                 | 217 +++++++++++++++++++++
>  4 files changed, 236 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/axs10x-i2s-pll-clock.txt
>  create mode 100644 drivers/clk/axs10x/Makefile
>  create mode 100644 drivers/clk/axs10x/i2s_pll_clock.c