From: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
To: daniel.lezcano@linaro.org, tglx@linutronix.de,
robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, Peng Fan <peng.fan@nxp.com>
Subject: [PATCH 2/2] clocksource/drivers/imx-sysctr: handle nxp,no-divider property
Date: Fri, 2 Sep 2022 19:12:07 +0800 [thread overview]
Message-ID: <20220902111207.2902493-3-peng.fan@oss.nxp.com> (raw)
In-Reply-To: <20220902111207.2902493-1-peng.fan@oss.nxp.com>
From: Peng Fan <peng.fan@nxp.com>
The previous hardware design embedds a internal divider for base clock.
New design not has that divider, so check the nxp,no-divider property,
if true, directly use base clock input, otherwise divide by 3 as before.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/clocksource/timer-imx-sysctr.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/clocksource/timer-imx-sysctr.c b/drivers/clocksource/timer-imx-sysctr.c
index 523e37662a6e..5a7a951c4efc 100644
--- a/drivers/clocksource/timer-imx-sysctr.c
+++ b/drivers/clocksource/timer-imx-sysctr.c
@@ -134,8 +134,10 @@ static int __init sysctr_timer_init(struct device_node *np)
if (ret)
return ret;
- /* system counter clock is divided by 3 internally */
- to_sysctr.of_clk.rate /= SYS_CTR_CLK_DIV;
+ if (!of_property_read_bool(np, "nxp,no-divider")) {
+ /* system counter clock is divided by 3 internally */
+ to_sysctr.of_clk.rate /= SYS_CTR_CLK_DIV;
+ }
sys_ctr_base = timer_of_base(&to_sysctr);
cmpcr = readl(sys_ctr_base + CMPCR);
--
2.37.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-09-02 11:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 11:12 [PATCH 0/2] clocksource: sysctr: add nxp,no-divider property Peng Fan (OSS)
2022-09-02 11:12 ` [PATCH 1/2] dt-bindings: timer: nxp,sysctr-timer: " Peng Fan (OSS)
2022-09-08 13:11 ` Krzysztof Kozlowski
2022-09-02 11:12 ` Peng Fan (OSS) [this message]
2022-09-20 8:45 ` [PATCH 0/2] clocksource: sysctr: " Daniel Lezcano
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=20220902111207.2902493-3-peng.fan@oss.nxp.com \
--to=peng.fan@oss.nxp.com \
--cc=daniel.lezcano@linaro.org \
--cc=devicetree@vger.kernel.org \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=peng.fan@nxp.com \
--cc=robh+dt@kernel.org \
--cc=tglx@linutronix.de \
/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).