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soc: imx: gpcv2: Synchronously suspend MIX domains

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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@denx.de>
Cc: Frieder Schrempf <frieder.schrempf@kontron.de>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Acked-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Marek Vasut 2021-10-16 23:05:47 +02:00 committed by Shawn Guo
parent fa55b7dcdc
commit f756f435f7
1 changed files with 1 additions and 1 deletions
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2
drivers/soc/imx/gpcv2.c
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@ -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;