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clk: k210: Fix PLL enable always getting taken 

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;