linux-kernel - Re: [PATCH 1/4] clk: sunxi-ng: Fix fractional mode for N-M clocks

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Message-ID: <CAGb2v65mVyS+4k+o70mBEOqDq2+4xrrEZex8BSLy83xZDsQKAw@mail.gmail.com>
Date:   Mon, 31 Jul 2017 12:54:53 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Mike Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH 1/4] clk: sunxi-ng: Fix fractional mode for N-M clocks

On Mon, Jul 31, 2017 at 12:41 AM, Jernej Skrabec
<jernej.skrabec@...l.net> wrote:
> N-M factor clock driver is missing a call to ccu_frac_helper_enable()
> when fractional mode is used. Additionally, most SoCs require that M
> factor must be set to 0 when fractional mode is used.
>
> Without this patch, clock keeps the old value and clk_set_rate() returns
> without error.
>
> Fixes: 6174a1e24b0d ("clk: sunxi-ng: Add N-M-factor clock support")
> CC: Maxime Ripard <maxime.ripard@...e-electrons.com>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>

Queued as a fix for 4.13.

ChenYu