[PATCH] soc: imx: gpcv2: Synchronously suspend MIX domains

[Marek Vasut]

In case the following power domain sequence happens, iMX8M Mini always hangs:
  gpumix:on -> gpu:on -> gpu:off -> gpu:on
This is likely due to another quirk of the GPC block. This situation can be
prevented by always synchronously powering off both the domain and MIX domain.
Make it so. This turns the aforementioned sequence into:
  gpumix:on -> gpu:on -> gpu:off -> gpumix:off -> gpumix:on -> gpu:on

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Frieder Schrempf <frieder.schrempf at kontron.de>
Cc: Lucas Stach <l.stach at pengutronix.de>
Cc: NXP Linux Team <linux-imx at nxp.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Shawn Guo <shawnguo at kernel.org>
---
 drivers/soc/imx/gpcv2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
index b8d52d8d29db..e757044ab751 100644
--- a/drivers/soc/imx/gpcv2.c
+++ b/drivers/soc/imx/gpcv2.c
@@ -377,7 +377,7 @@ static int imx_pgc_power_down(struct generic_pm_domain *genpd)
 		}
 	}
 
-	pm_runtime_put(domain->dev);
+	pm_runtime_put_sync_suspend(domain->dev);
 
 	return 0;
 
-- 
2.33.0