From: Patrice Chotard <patrice.chotard@st.com>
To: Peter Griffin <peter.griffin@linaro.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <kernel@stlinux.com>
Cc: <lee.jones@linaro.org>, <devicetree@vger.kernel.org>
Subject: Re: [PATCH] ARM: sti: stih410-clocks: Add PROC_STFE as a critical clock
Date: Thu, 20 Oct 2016 15:50:10 +0200 [thread overview]
Message-ID: <5d44e490-f6c2-79d4-98da-1d3c7543b1a2@st.com> (raw)
In-Reply-To: <1476804957-24000-1-git-send-email-peter.griffin@linaro.org>
On 10/18/2016 05:35 PM, Peter Griffin wrote:
> Once the ST frontend demux HW IP has been enabled, the clock can't
> be disabled otherwise the system will hang and the board will
> be unserviceable.
>
> To allow balanced clock enable/disable calls in the driver we use
> the critical clock infrastructure to take an extra reference on the
> clock so the clock will never actually be disabled.
>
> Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
> ---
> arch/arm/boot/dts/stih410-clock.dtsi | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/stih410-clock.dtsi b/arch/arm/boot/dts/stih410-clock.dtsi
> index 8598eff..07c8ef9 100644
> --- a/arch/arm/boot/dts/stih410-clock.dtsi
> +++ b/arch/arm/boot/dts/stih410-clock.dtsi
> @@ -208,7 +208,8 @@
> "clk-clust-hades",
> "clk-hwpe-hades",
> "clk-fc-hades";
> - clock-critical = <CLK_ICN_CPU>,
> + clock-critical = <CLK_PROC_STFE>,
> + <CLK_ICN_CPU>,
> <CLK_TX_ICN_DMU>,
> <CLK_EXT2F_A9>,
> <CLK_ICN_LMI>,
>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Applied on sti-dt-for-4.10 branch
Thanks
next prev parent reply other threads:[~2016-10-20 13:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-18 15:35 [PATCH] ARM: sti: stih410-clocks: Add PROC_STFE as a critical clock Peter Griffin
2016-10-20 13:50 ` Patrice Chotard [this message]
2016-10-24 8:53 ` Lee Jones
2016-10-24 13:44 ` Peter Griffin
2016-10-25 7:42 ` Lee Jones
2016-10-25 9:39 ` Peter Griffin
2016-10-25 10:01 ` Lee Jones
2016-10-25 13:49 ` Peter Griffin
2016-10-26 8:51 ` Lee Jones
2016-10-26 8:56 ` Peter Griffin
2016-10-26 13:00 ` Lee Jones
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5d44e490-f6c2-79d4-98da-1d3c7543b1a2@st.com \
--to=patrice.chotard@st.com \
--cc=devicetree@vger.kernel.org \
--cc=kernel@stlinux.com \
--cc=lee.jones@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=peter.griffin@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).