linux-kernel - Re: [PATCH v4] ARC: clk: introduce HSDK pll driver

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Message-ID: <20170831053800.GC21656@codeaurora.org>
Date:   Wed, 30 Aug 2017 22:38:00 -0700
From:   Stephen Boyd <sboyd@...eaurora.org>
To:     Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
Cc:     linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-snps-arc@...ts.infradead.org,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v4] ARC: clk: introduce HSDK pll driver

On 08/25, Eugeniy Paltsev wrote:
> HSDK board manages its clocks using various PLLs. These PLL have same
> dividers and corresponding control registers mapped to different addresses.
> So we add one common driver for such PLLs.
> 
> Each PLL on HSDK board consists of three dividers: IDIV, FBDIV and
> ODIV. Output clock value is managed using these dividers.
> 
> We add pre-defined tables with supported rate values and appropriate
> configurations of IDIV, FBDIV and ODIV for each value.
> 
> As of today we add support for PLLs that generate clock for the
> HSDK arc cpus, system, ddr, AXI tunnel and hdmi.
> 
> By this patch we add support for several plls (arc cpus pll and others),
> so we had to use two different init types: CLK_OF_DECLARE for arc cpus pll
> and regular probing for others plls.
> 
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
> ---

Applied to clk-next

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