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Date: Tue, 1 Jul 2014 16:12:12 +0200
From: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To: Nicolas Ferre <nicolas.ferre@...el.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
Boris Brezillon <boris.brezillon@...e-electrons.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Subject: [PATCH 03/33] clk: at91: main: warn when the main crystal frequency is not set
When the main crystal frequency is not set, the main clock is approximated using
the MAINF value in the CKGR_MCFR register. Warn the user in that case.
Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
---
drivers/clk/at91/clk-main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/clk/at91/clk-main.c b/drivers/clk/at91/clk-main.c
index 733306131b99..59fa3cc96c9e 100644
--- a/drivers/clk/at91/clk-main.c
+++ b/drivers/clk/at91/clk-main.c
@@ -388,6 +388,7 @@ static unsigned long clk_main_recalc_rate(struct at91_pmc *pmc,
if (parent_rate)
return parent_rate;
+ pr_warn("Main crystal frequency not set, using approximate value\n");
tmp = pmc_read(pmc, AT91_CKGR_MCFR);
if (!(tmp & AT91_PMC_MAINRDY))
return 0;
--
1.9.1
--
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