On Mon, May 02, 2016 at 10:39:05AM +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@xxxxxxxxxxxx>
> ---
>
> Changes v5 -> v6:
> * Use parent clock to determine PLL input rate instead of using hardcoded values
> * Documentation update (added 'clocks' field)
>
> 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
>
> Cc: Carlos Palminha <palminha@xxxxxxxxxxxx>
> Cc: Rob Herring <robh@xxxxxxxxxx>
> Cc: Pawel Moll <pawel.moll@xxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
> Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
> Cc: Michael Turquette <mturquette@xxxxxxxxxxxx>
> Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
> Cc: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>
> Cc: Vineet Gupta <vgupta@xxxxxxxxxxxx>
> Cc: linux-snps-arc@xxxxxxxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: linux-clk@xxxxxxxxxxxxxxx
>
> .../bindings/clock/axs10x-i2s-pll-clock.txt | 25 +++
Acked-by: Rob Herring <robh@xxxxxxxxxx>
> drivers/clk/Makefile | 1 +
> drivers/clk/axs10x/Makefile | 1 +
> drivers/clk/axs10x/i2s_pll_clock.c | 228 +++++++++++++++++++++
> 4 files changed, 255 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
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