From: Lubomir Rintel <[email protected]> commit 655ae29da72a693cf294bba3c3322e662ff75bd3 upstream.
Writing to REG_CLKCTRL with the power off causes a hang. Enable the device first. Cc: [email protected] # 5.10+ Signed-off-by: Lubomir Rintel <[email protected]> Signed-off-by: Sakari Ailus <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/media/platform/marvell-ccic/mcam-core.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/media/platform/marvell-ccic/mcam-core.c +++ b/drivers/media/platform/marvell-ccic/mcam-core.c @@ -931,6 +931,7 @@ static int mclk_enable(struct clk_hw *hw mclk_div = 2; } + pm_runtime_get_sync(cam->dev); clk_enable(cam->clk[0]); mcam_reg_write(cam, REG_CLKCTRL, (mclk_src << 29) | mclk_div); mcam_ctlr_power_up(cam); @@ -944,6 +945,7 @@ static void mclk_disable(struct clk_hw * mcam_ctlr_power_down(cam); clk_disable(cam->clk[0]); + pm_runtime_put(cam->dev); } static unsigned long mclk_recalc_rate(struct clk_hw *hw,
