From: Pavel Machek <pavel@ucw.cz>
To: Lubomir Rintel <lkundrak@v3.sk>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Eric Miao <eric.y.miao@gmail.com>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Russell King <linux@armlinux.org.uk>
Subject: Re: [PATCH 4/4] ARM: mmp/mmp2: dt: enable the clock
Date: Sat, 3 Nov 2018 20:17:04 +0100 [thread overview]
Message-ID: <20181103191703.GJ31179@amd> (raw)
In-Reply-To: <20180918205455.25464-5-lkundrak@v3.sk>
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On Tue 2018-09-18 22:54:55, Lubomir Rintel wrote:
> The device-tree booted MMP2 needs to enable the timer clock, otherwise
> the it would stop ticking when the boot finishes.
"the it" -> "it"
> It can also use the clock rate from the clk, the non-DT boards need to
> keep using the hardcoded rates.
>
> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
> + clk = of_clk_get(np, 0);
> + if (!IS_ERR(clk)) {
> + ret = clk_prepare_enable(clk);
> + if (ret)
> + goto out;
> + rate = clk_get_rate(clk) / 2;
> + } else if (cpu_is_pj4 ()) {
extra space.
> + rate = 6500000;
> + } else {
> + rate = 3250000;
> + }
> +
> irq = irq_of_parse_and_map(np, 0);
> if (!irq) {
> ret = -EINVAL;
> @@ -231,7 +239,7 @@ void __init mmp_dt_init_timer(void)
> ret = -ENOMEM;
> goto out;
> }
> - timer_init(irq);
> + timer_init(irq, rate);
> return;
> out:
> pr_err("Failed to get timer from device tree with error:%d\n", ret);
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2018-11-03 19:17 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-18 20:54 [PATCH v2 0/4] Enable the timer clock on DT MMP2 Lubomir Rintel
2018-09-18 20:54 ` [PATCH v2 1/4] dt-bindings: mrvl,mmp-timer: add clock Lubomir Rintel
2018-09-26 22:51 ` Rob Herring
2018-11-03 19:14 ` Pavel Machek
2018-09-18 20:54 ` [PATCH v2 2/4] DT: marvell,mmp2: add clock to the timer Lubomir Rintel
2018-11-03 19:15 ` Pavel Machek
2018-09-18 20:54 ` [PATCH v2 3/4] ARM: mmp2: initialize clocks before " Lubomir Rintel
2018-11-03 19:15 ` Pavel Machek
2018-09-18 20:54 ` [PATCH 4/4] ARM: mmp/mmp2: dt: enable the clock Lubomir Rintel
2018-11-03 19:17 ` Pavel Machek [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-09-10 11:30 [PATCH 0/4] Enable the timer clock on DT MMP2 Lubomir Rintel
2018-09-10 11:30 ` [PATCH 4/4] ARM: mmp/mmp2: dt: enable the clock Lubomir Rintel
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