diff options
| -rw-r--r-- | drivers/clk/bcm/clk-bcm2835.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index c74ed3fd496d..adbaa55e939c 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -910,8 +910,14 @@ static void bcm2835_pll_off(struct clk_hw *hw) struct bcm2835_cprman *cprman = pll->cprman; const struct bcm2835_pll_data *data = pll->data; - cprman_write(cprman, data->cm_ctrl_reg, CM_PLL_ANARST); - cprman_write(cprman, data->a2w_ctrl_reg, A2W_PLL_CTRL_PWRDN); + spin_lock(&cprman->regs_lock); + cprman_write(cprman, data->cm_ctrl_reg, + cprman_read(cprman, data->cm_ctrl_reg) | + CM_PLL_ANARST); + cprman_write(cprman, data->a2w_ctrl_reg, + cprman_read(cprman, data->a2w_ctrl_reg) | + A2W_PLL_CTRL_PWRDN); + spin_unlock(&cprman->regs_lock); } static int bcm2835_pll_on(struct clk_hw *hw) |