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| author | Quanyang Wang <quanyang.wang@windriver.com> | 2021-04-06 23:40:15 +0800 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2021-04-07 18:09:23 -0700 |
| commit | d7fd3f9f53df8bb2212dff70f66f12cae0e1a653 (patch) | |
| tree | 12cb6b140b661c96e731d46f1954ca3a5fb7d196 /drivers/clk | |
| parent | 21f237534661a93cb6edc68d8cf9aacd025da9c2 (diff) | |
| download | lwn-d7fd3f9f53df8bb2212dff70f66f12cae0e1a653.tar.gz lwn-d7fd3f9f53df8bb2212dff70f66f12cae0e1a653.zip | |
clk: zynqmp: move zynqmp_pll_set_mode out of round_rate callback
The round_rate callback should only perform rate calculation and not
involve calling zynqmp_pll_set_mode to change the pll mode. So let's
move zynqmp_pll_set_mode out of round_rate and to set_rate callback.
Fixes: 3fde0e16d016 ("drivers: clk: Add ZynqMP clock driver")
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>
Link: https://lore.kernel.org/r/20210406154015.602779-1-quanyang.wang@windriver.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/zynqmp/pll.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c index 92f449ed38e5..03bfe62c1e62 100644 --- a/drivers/clk/zynqmp/pll.c +++ b/drivers/clk/zynqmp/pll.c @@ -100,9 +100,7 @@ static long zynqmp_pll_round_rate(struct clk_hw *hw, unsigned long rate, /* Enable the fractional mode if needed */ rate_div = (rate * FRAC_DIV) / *prate; f = rate_div % FRAC_DIV; - zynqmp_pll_set_mode(hw, !!f); - - if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) { + if (f) { if (rate > PS_PLL_VCO_MAX) { fbdiv = rate / PS_PLL_VCO_MAX; rate = rate / (fbdiv + 1); @@ -173,10 +171,12 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate, long rate_div, frac, m, f; int ret; - if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) { - rate_div = (rate * FRAC_DIV) / parent_rate; + rate_div = (rate * FRAC_DIV) / parent_rate; + f = rate_div % FRAC_DIV; + zynqmp_pll_set_mode(hw, !!f); + + if (f) { m = rate_div / FRAC_DIV; - f = rate_div % FRAC_DIV; m = clamp_t(u32, m, (PLL_FBDIV_MIN), (PLL_FBDIV_MAX)); rate = parent_rate * m; frac = (parent_rate * f) / FRAC_DIV; |