linux-kernel - Re: [PATCH] drivers: clk: Update clock driver to handle clock attribute

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Message-ID: <155500757006.20095.12680724036255288516@swboyd.mtv.corp.google.com>
Date:   Thu, 11 Apr 2019 11:32:50 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Jolly Shah <jolly.shah@...inx.com>, linux-clk@...r.kernel.org,
        michal.simek@...inx.com, mturquette@...libre.com,
        sboyd@...eaurora.org
Cc:     rajanv@...inx.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Rajan Vaja <rajan.vaja@...inx.com>,
        Tejas Patel <tejas.patel@...inx.com>,
        Jolly Shah <jollys@...inx.com>
Subject: Re: [PATCH] drivers: clk: Update clock driver to handle clock attribute

Quoting Jolly Shah (2019-03-04 15:19:10)
> From: Rajan Vaja <rajan.vaja@...inx.com>
> 
> Versal EEMI APIs uses clock device ID which is combination of class,
> subclass, type and clock index (e.g. 0x8104006 in which 0-13 bits are
> for index(6 in given example), 14-19 bits are for clock type (i.e pll,
> out or ref, 1 in given example), 20-25 bits are for subclass which is
> nothing but clock type only), 26-32 bits are for device class, which
> is clock(0x2) for all clocks) while zynqmp firmware uses clock ID
> which is index only (e.g 0, 1, to n, where n is max_clock id).
> 
> To use zynqmp clock driver for versal platform also, extend use
> of QueryAttribute API to fetch device class, subclass and clock type
> to create clock device ID. In case of zynqmp this attributes would be
> 0 only, so there won't be any effect on clock id as it would use
> clock index only.
> 
> Signed-off-by: Tejas Patel <tejas.patel@...inx.com>
> Signed-off-by: Rajan Vaja <rajan.vaja@...inx.com>
> Signed-off-by: Michal Simek <michal.simek@...inx.com>
> Signed-off-by: Jolly Shah <jollys@...inx.com>
> ---

Applied to clk-next