linux-kernel - Re: [PATCH v2 2/2] drivers: clk: zynqmp: Update fraction clock check from custom type flags

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Message-ID: <159054130065.88029.8168299493953876586@swboyd.mtv.corp.google.com>
Date:   Tue, 26 May 2020 18:01:40 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Jolly Shah <jolly.shah@...inx.com>, arm@...nel.org,
        linux-clk@...r.kernel.org, michal.simek@...inx.com,
        mturquette@...libre.com, olof@...om.net
Cc:     rajanv@...inx.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Tejas Patel <tejas.patel@...inx.com>,
        Rajan Vaja <rajan.vaja@...inx.com>,
        Jolly Shah <jolly.shah@...inx.com>
Subject: Re: [PATCH v2 2/2] drivers: clk: zynqmp: Update fraction clock check from custom type flags

Quoting Jolly Shah (2020-03-12 14:31:39)
> From: Tejas Patel <tejas.patel@...inx.com>
> 
> Older firmware version sets BIT(13) in clkflag to mark a
> divider as fractional divider. Updated firmware version sets BIT(4)
> in type flags to mark a divider as fractional divider since
> BIT(13) is defined as CLK_DUTY_CYCLE_PARENT in the common clk
> framework flags.
> 
> To support both old and new firmware version, consider BIT(13) from
> clkflag and BIT(4) from type_flag to check if divider is fractional
> or not.
> 
> To maintain compatibility BIT(13) of clkflag in firmware will not be
> used in future for any purpose and will be marked as unused.
> 
> Signed-off-by: Tejas Patel <tejas.patel@...inx.com>
> Signed-off-by: Rajan Vaja <rajan.vaja@...inx.com>
> Signed-off-by: Jolly Shah <jolly.shah@...inx.com>
> ---

Applied to clk-next