From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Russell King <linux@armlinux.org.uk>,
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>,
Fabio Estevam <festevam@gmail.com>,
linux-clk <linux-clk@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5] clk: Add write operation for clk_parent debugfs node
Date: Wed, 13 Oct 2021 15:00:42 +0200 [thread overview]
Message-ID: <CAMuHMdU+N071GCb6OepwBu_2fTununksguD26nxY3f-BqzjsQg@mail.gmail.com> (raw)
In-Reply-To: <20211007182158.7490-1-semen.protsenko@linaro.org>
On Thu, Oct 7, 2021 at 8:22 PM Sam Protsenko <semen.protsenko@linaro.org> wrote:
> Useful for testing mux clocks. One can write the index of the parent to
> be set into clk_parent node, starting from 0. Example
>
> # 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
>
> CLOCK_ALLOW_WRITE_DEBUGFS has to be defined in drivers/clk/clk.c in
> order to use this feature.
>
> 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>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
prev parent reply other threads:[~2021-10-13 13:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-07 18:21 [PATCH v5] clk: Add write operation for clk_parent debugfs node Sam Protsenko
2021-10-12 18:55 ` Andy Shevchenko
2021-10-13 11:35 ` Sam Protsenko
2021-10-13 13:07 ` Andy Shevchenko
2021-10-13 16:15 ` Sam Protsenko
2021-10-13 13:08 ` Geert Uytterhoeven
2021-10-13 16:30 ` Sam Protsenko
2021-10-13 17:13 ` Sam Protsenko
2021-10-13 13:00 ` Geert Uytterhoeven [this message]
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