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From: Lubomir Rintel <lkundrak@v3.sk>
To: Olof Johansson  <olof@lixom.net>
Cc: Arnd Bergmann <arnd@arndb.de>, Stephen Boyd <sboyd@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	linux-kernel@vger.kernel.org, Lubomir Rintel <lkundrak@v3.sk>,
	soc@kernel.org, linux-clk@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] clk: mmp2: Fix the order of timer mux parents
Date: Wed, 18 Dec 2019 20:04:54 +0100
Message-ID: <20191218190454.420358-3-lkundrak@v3.sk> (raw)
In-Reply-To: <20191218190454.420358-1-lkundrak@v3.sk>

Determined empirically, no documentation is available.

The OLPC XO-1.75 laptop used parent 1, that one being VCTCXO/4 (65MHz), but
thought it's a VCTCXO/2 (130MHz). The mmp2 timer driver, not knowing
what is going on, ended up just dividing the rate as of
commit f36797ee4380 ("ARM: mmp/mmp2: dt: enable the clock")'

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
 drivers/clk/mmp/clk-of-mmp2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/mmp/clk-of-mmp2.c b/drivers/clk/mmp/clk-of-mmp2.c
index e7e264f26a50d..24af9241bfa06 100644
--- a/drivers/clk/mmp/clk-of-mmp2.c
+++ b/drivers/clk/mmp/clk-of-mmp2.c
@@ -154,7 +154,7 @@ static DEFINE_SPINLOCK(ssp3_lock);
 static const char *ssp_parent_names[] = {"vctcxo_4", "vctcxo_2", "vctcxo", "pll1_16"};
 
 static DEFINE_SPINLOCK(timer_lock);
-static const char *timer_parent_names[] = {"clk32", "vctcxo_2", "vctcxo_4", "vctcxo"};
+static const char *timer_parent_names[] = {"clk32", "vctcxo_4", "vctcxo_2", "vctcxo"};
 
 static DEFINE_SPINLOCK(reset_lock);
 
-- 
2.23.0


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Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-18 19:04 [PATCH 0/2] Unbreak parent selection on MMP2 timer mux Lubomir Rintel
2019-12-18 19:04 ` [PATCH 1/2] ARM: mmp: do not divide the clock rate Lubomir Rintel
2019-12-18 19:04 ` Lubomir Rintel [this message]
2019-12-19  5:14   ` [PATCH 2/2] clk: mmp2: Fix the order of timer mux parents Stephen Boyd

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