Message ID | 1575977088-16781-1-git-send-email-eugen.hristev@microchip.com (mailing list archive) |
---|---|
State | Mainlined |
Commit | 66d9f5214c9ba1c151478f99520b6817302d50dc |
Headers | show
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clk: at91: sam9x60: fix programmable clock prescaler
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Quoting Eugen.Hristev@microchip.com (2019-12-10 03:25:19) > From: Eugen Hristev <eugen.hristev@microchip.com> > > The prescaler works as parent rate divided by (PRES + 1) (is_pres_direct == 1) > It does not work in the way of parent rate shifted to the right by (PRES + 1), > which means division by 2^(PRES + 1) (is_pres_direct == 0) > Thus is_pres_direct must be enabled for this SoC, to make the right computation. > This field was added in > commit 45b06682113b ("clk: at91: fix programmable clock for sama5d2") > SAM9X60 has the same field as SAMA5D2 in the PCK > > Fixes: 01e2113de9a5 ("clk: at91: add sam9x60 pmc driver") > Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> > --- Applied to clk-next
diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c index 86238d5..77398ae 100644 --- a/drivers/clk/at91/sam9x60.c +++ b/drivers/clk/at91/sam9x60.c @@ -47,6 +47,7 @@ static const struct clk_programmable_layout sam9x60_programmable_layout = { .pres_shift = 8, .css_mask = 0x1f, .have_slck_mck = 0, + .is_pres_direct = 1, }; static const struct clk_pcr_layout sam9x60_pcr_layout = {