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clk: bcm2835: Fix PLL poweron

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In poweroff, we set the reset bit and the power down bit, but only
managed to unset the reset bit for poweron.  This meant that if HDMI
did -EPROBE_DEFER after it had grabbed its clocks, we'd power down the
PLLH (that had been on at boot time) and never recover.

Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 41691b8862 ("clk: bcm2835: Add support for programming the audio domain clocks")
Cc: stable@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Eric Anholt 2016-04-13 13:05:03 -07:00 committed by Stephen Boyd
parent 286259ef4b
commit e708b383f4
1 changed files with 4 additions and 0 deletions
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4
drivers/clk/bcm/clk-bcm2835.c
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@ -554,6 +554,10 @@ static int bcm2835_pll_on(struct clk_hw *hw)
const struct bcm2835_pll_data *data = pll->data;
ktime_t timeout;
cprman_write(cprman, data->a2w_ctrl_reg,
cprman_read(cprman, data->a2w_ctrl_reg) &
~A2W_PLL_CTRL_PWRDN);
/* Take the PLL out of reset. */
cprman_write(cprman, data->cm_ctrl_reg,
cprman_read(cprman, data->cm_ctrl_reg) & ~CM_PLL_ANARST);