diff options
| author |   Maxime Ripard <maxime@cerno.tech> | 2021-09-22 14:54:15 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2021-10-25 15:33:39 +0200 |
| commit | 5517357a4733d7cf7c17fc79d0530cfa47add372 (patch) | |
| tree | 4fbf60db80d484b2f2755bdab960556508e39afb /drivers/clk/bcm | |
| parent | Merge drm/drm-next into drm-misc-next (diff) | |
| download | wireguard-linux-5517357a4733d7cf7c17fc79d0530cfa47add372.tar.xz wireguard-linux-5517357a4733d7cf7c17fc79d0530cfa47add372.zip | |
clk: bcm-2835: Pick the closest clock rate
The driver currently tries to pick the closest rate that is lower than
the rate being requested.
This causes an issue with clk_set_min_rate() since it actively checks
for the rounded rate to be above the minimum that was just set.
Let's change the logic a bit to pick the closest rate to the requested
rate, no matter if it's actually higher or lower.
Fixes: 6d18b8adbe67 ("clk: bcm2835: Support for clock parent selection")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Tested-by: Nicolas Saenz Julienne <nsaenz@kernel.org> # boot and basic functionality
Tested-by: Michael Stapelberg <michael@stapelberg.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210922125419.4125779-2-maxime@cerno.tech
Diffstat (limited to 'drivers/clk/bcm')
| -rw-r--r-- | drivers/clk/bcm/clk-bcm2835.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index a254512965eb..bf97b2b2a63f 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1216,7 +1216,7 @@ static int bcm2835_clock_determine_rate(struct clk_hw *hw, rate = bcm2835_clock_choose_div_and_prate(hw, i, req->rate, &div, &prate, &avgrate); - if (rate > best_rate && rate <= req->rate) { + if (abs(req->rate - rate) < abs(req->rate - best_rate)) { best_parent = parent; best_prate = prate; best_rate = rate; |