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One fix for the composite clk that broke when we changed this clk type 

to use the determine_rate instead of round_rate clk op by default. This
 caused lots of problems on Rockchip SoCs because they heavily use
 the composite clk code to model the clk tree.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fix from Stephen Boyd:
 "One fix for the composite clk that broke when we changed this clk type
  to use the determine_rate instead of round_rate clk op by default.
  This caused lots of problems on Rockchip SoCs because they heavily use
  the composite clk code to model the clk tree"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: composite: Also consider .determine_rate for rate + mux composites
This commit is contained in:
Linus Torvalds 2021-10-30 09:55:46 -07:00
parent bf85ba018f 675c496d0f
commit 3a4347d82e
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/clk/clk-composite.c
View File

@ -58,11 +58,8 @@ static int clk_composite_determine_rate(struct clk_hw *hw,
long rate;
int i;
if (rate_hw && rate_ops && rate_ops->determine_rate) {
__clk_hw_set_clk(rate_hw, hw);
return rate_ops->determine_rate(rate_hw, req);
} else if (rate_hw && rate_ops && rate_ops->round_rate &&
mux_hw && mux_ops && mux_ops->set_parent) {
if (rate_hw && rate_ops && rate_ops->round_rate &&
mux_hw && mux_ops && mux_ops->set_parent) {
req->best_parent_hw = NULL;
if (clk_hw_get_flags(hw) & CLK_SET_RATE_NO_REPARENT) {
@ -107,6 +104,9 @@ static int clk_composite_determine_rate(struct clk_hw *hw,
req->rate = best_rate;
return 0;
} else if (rate_hw && rate_ops && rate_ops->determine_rate) {
__clk_hw_set_clk(rate_hw, hw);
return rate_ops->determine_rate(rate_hw, req);
} else if (mux_hw && mux_ops && mux_ops->determine_rate) {
__clk_hw_set_clk(mux_hw, hw);
return mux_ops->determine_rate(mux_hw, req);