From: Lubomir Rintel <lkund...@v3.sk>
commit 655ae29da72a693cf294bba3c3322e662ff75bd3 upstream.
Writing to REG_CLKCTRL with the power off causes a hang. Enable the
device first.
Cc: sta...@vger.kernel.org # 5.10+
Signed-off-by: Lubomir Rintel <lkund...@v3.sk>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
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,
