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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2014-07-01 16:12:12 +0200
committerMike Turquette <mturquette@linaro.org>2014-07-02 09:00:52 -0700
commit4da66b631f6bee2dfdb77b571418f11016a7ba68 (patch)
tree39494b773c40c1f0395e11d69d851103e40bb9fc /drivers/clk/at91
parent942d1d674931250e81af2aa124549562a06a28c7 (diff)
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@free-electrons.com> Acked-by: Boris BREZILLON <boris.brezillon@overkiz.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/at91')
-rw-r--r--drivers/clk/at91/clk-main.c1
1 files changed, 1 insertions, 0 deletions
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;