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In-Reply-To: <20211013172042.10884-1-semen.protsenko@linaro.org>
References: <20211013172042.10884-1-semen.protsenko@linaro.org>
Subject: Re: [PATCH v6] clk: Add write operation for clk_parent debugfs node
From:   Stephen Boyd <sboyd@kernel.org>
Cc:     Chanwoo Choi <cw00.choi@samsung.com>,
        Sylwester Nawrocki <s.nawrocki@samsung.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
        Mike Tipton <mdtipton@codeaurora.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Andy Shevchenko <andy@kernel.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Fabio Estevam <festevam@gmail.com>, linux-clk@vger.kernel.org,
        linux-kernel@vger.kernel.org
To:     Michael Turquette <mturquette@baylibre.com>,
        Russell King <linux@armlinux.org.uk>,
        Sam Protsenko <semen.protsenko@linaro.org>
Date:   Thu, 09 Dec 2021 17:17:16 -0800
User-Agent: alot/0.9.1
Message-Id: <20211210011717.B3E13C004DD@smtp.kernel.org>
Precedence: bulk

Quoting Sam Protsenko (2021-10-13 10:20:42)
> Useful for testing mux clocks. One can write the index of the parent to
> be set into clk_parent node, starting from 0. Example
>=20
>     # cd /sys/kernel/debug/clk/mout_peri_bus
>     # cat clk_possible_parents
>       dout_shared0_div4 dout_shared1_div4
>     # cat clk_parent
>       dout_shared0_div4
>     # echo 1 > clk_parent
>     # cat clk_parent
>       dout_shared1_div4
>=20
> CLOCK_ALLOW_WRITE_DEBUGFS has to be defined in drivers/clk/clk.c in
> order to use this feature.
>=20
> Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---

Applied to clk-next