diff options
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/imx/clk-pfdv2.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/clk/imx/clk-pfdv2.c b/drivers/clk/imx/clk-pfdv2.c index 6b744c84278e..9cba83521988 100644 --- a/drivers/clk/imx/clk-pfdv2.c +++ b/drivers/clk/imx/clk-pfdv2.c @@ -161,8 +161,17 @@ static int clk_pfdv2_set_rate(struct clk_hw *hw, unsigned long rate, if (!rate) return -EINVAL; - /* PFD can NOT change rate without gating */ - WARN_ON(clk_pfdv2_is_enabled(hw)); + /* + * PFD can NOT change rate without gating. + * as the PFDs may enabled in HW by default but no + * consumer used it, the enable count is '0', so the + * 'SET_RATE_GATE' can NOT help on blocking the set_rate + * ops especially for 'assigned-clock-xxx'. In order + * to simplify the case, just disable the PFD if it is + * enabled in HW but not in SW. + */ + if (clk_pfdv2_is_enabled(hw)) + clk_pfdv2_disable(hw); tmp = tmp * 18 + rate / 2; do_div(tmp, rate); |