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clk: k210: Fix PLL enable always getting taken

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This conditional always evaluated as false, regardless of the value of reg.
Fix it so that it properly tests the bits in the PLL register. Also test
PLL_EN, now that we set it.

Reported-by: Damien Le Moal <Damien.LeMoal@wdc.com>
Signed-off-by: Sean Anderson <seanga2@gmail.com>
This commit is contained in:
Sean Anderson 2021-04-08 22:13:05 -04:00 committed by Leo Yu-Chi Liang
parent d0686a02b9
commit 598a06dcb4
1 changed files with 2 additions and 1 deletions
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3
drivers/clk/kendryte/pll.c
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@ -512,7 +512,8 @@ static int k210_pll_enable(struct clk *clk)
struct k210_pll *pll = to_k210_pll(clk);
u32 reg = readl(pll->reg);
if ((reg | K210_PLL_PWRD) && !(reg | K210_PLL_RESET))
if ((reg & K210_PLL_PWRD) && (reg & K210_PLL_EN) &&
!(reg & K210_PLL_RESET))
return 0;
reg |= K210_PLL_PWRD;