From: Alexey.Brodkin@synopsys.com (Alexey Brodkin)
To: linux-snps-arc@lists.infradead.org
Subject: [PATCH 7/9] ARC: use fixed frequencies in arc_set_early_base_baud()
Date: Tue, 2 Feb 2016 12:53:26 +0000 [thread overview]
Message-ID: <1454417606.25997.7.camel@synopsys.com> (raw)
In-Reply-To: <1454410739-24444-8-git-send-email-vgupta@synopsys.com>
Adding Christian for Abilis TB10x clocks review.
On Tue, 2016-02-02@16:28 +0530, Vineet Gupta wrote:
> From: Alexey Brodkin <abrodkin at synopsys.com>
>
> UARTs usually have fixed clock so we're switching to use of
> constant values instead of something derived from core clock
> frequency.
>
> Among other things this will allow us to get rid of
> arc_{get|set}_core_freq() and switch to generic clock
> framework later on.
>
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> Signed-off-by: Vineet Gupta <vgupta at synopsys.com>
> ---
> arch/arc/kernel/devtree.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arc/kernel/devtree.c b/arch/arc/kernel/devtree.c
> index 7e844fd8213f..e155126c79b1 100644
> --- a/arch/arc/kernel/devtree.c
> +++ b/arch/arc/kernel/devtree.c
> @@ -28,14 +28,12 @@ unsigned int __init arc_early_base_baud(void)
>
> static void __init arc_set_early_base_baud(unsigned long dt_root)
> {
> - unsigned int core_clk = arc_get_core_freq();
> -
> if (of_flat_dt_is_compatible(dt_root, "abilis,arc-tb10x"))
> - arc_base_baud = core_clk/3;
> + arc_base_baud = 166666667; /* Fixed 166.7MHz clk (TB10x) */
> else if (of_flat_dt_is_compatible(dt_root, "snps,arc-sdp"))
> arc_base_baud = 33333333; /* Fixed 33MHz clk (AXS10x) */
> else
> - arc_base_baud = core_clk;
> + arc_base_baud = 50000000; /* Fixed default 50MHz */
> }
> #else
> #define arc_set_early_base_baud(dt_root)
-Alexey
next prev parent reply other threads:[~2016-02-02 12:53 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-02 10:58 [PATCH 0/9] ARC clockevent/clocksource modernization Vineet Gupta
2016-02-02 10:58 ` [PATCH 1/9] ARC: [dts] Add clk feeding into timers to DTs Vineet Gupta
2016-02-02 10:58 ` [PATCH 2/9] ARC: [dts] Introduce Timer bindings Vineet Gupta
2016-02-02 12:48 ` Alexey Brodkin
2016-02-02 13:15 ` Alexey Brodkin
2016-02-02 14:29 ` Vineet Gupta
2016-02-02 15:36 ` Alexey Brodkin
2016-02-02 22:57 ` Alexey Brodkin
2016-02-03 13:44 ` Alexey Brodkin
2016-02-03 13:50 ` Alexey Brodkin
2016-02-02 22:03 ` Rob Herring
2016-02-03 8:04 ` Vineet Gupta
2016-02-03 15:39 ` Rob Herring
2016-02-16 8:44 ` Vineet Gupta
2016-02-02 10:58 ` [PATCH 3/9] ARC: clockevent: switch to cpu notifier for clockevent setup Vineet Gupta
2016-02-02 10:58 ` [PATCH 4/9] ARC: clockevent: Prepare for DT based probe Vineet Gupta
2016-02-02 10:58 ` [PATCH 5/9] ARC: clockevent: " Vineet Gupta
2016-02-02 10:58 ` [PATCH 6/9] ARC: clocksource: " Vineet Gupta
2016-02-08 12:10 ` Daniel Lezcano
2016-02-08 12:23 ` Vineet Gupta
2016-02-10 13:38 ` Daniel Lezcano
2016-02-02 10:58 ` [PATCH 7/9] ARC: use fixed frequencies in arc_set_early_base_baud() Vineet Gupta
2016-02-02 12:53 ` Alexey Brodkin [this message]
2016-02-02 13:43 ` christian.ruppert
2016-02-02 14:26 ` Alexey Brodkin
2016-02-02 10:58 ` [PATCH 8/9] ARC: [plat-axs] Don't use arc_{get|set}_core_freq() for manipulating core clk Vineet Gupta
2016-02-02 10:58 ` [PATCH 9/9] ARC: RIP arc_{get|set}_core_freq() clk API Vineet Gupta
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