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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 15.07.2020 14:24, Claudiu Beznea wrote: > Register slow rc with accuracy option. > > Fixes: 04bcc4275e601 ("clk: at91: sckc: add support for SAM9X60") > Signed-off-by: Claudiu Beznea > --- > drivers/clk/at91/sckc.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/clk/at91/sckc.c b/drivers/clk/at91/sckc.c > index 15dc4cd86d76..2d65770d8665 100644 > --- a/drivers/clk/at91/sckc.c > +++ b/drivers/clk/at91/sckc.c > @@ -471,8 +471,9 @@ static void __init of_sam9x60_sckc_setup(struct device_node *np) > if (!regbase) > return; > > - slow_rc = clk_hw_register_fixed_rate(NULL, parent_names[0], NULL, 0, > - 32768); > + slow_rc = clk_hw_register_fixed_rate_with_accuracy(NULL, parent_names[0], > + NULL, 0, 32768, > + 93750000); I forgot to mention in commit message (I'll do it in v2 once I'll gather more comments on this series): Chapter 57.7.5 of SAM9X60 datasheet specifies that the maximum drift of this oscillator is +- 3KHz. I used that value and the formula at [1] or the calculator at [2] to compute the PPB value. [1] https://www.everythingrf.com/rf-calculators/ppm-to-hz-calculator [2] https://www.changpuak.ch/electronics/ppm_to_Hz_converter.php Thank you, Claudiu Beznea > if (IS_ERR(slow_rc)) > return; > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel