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soc: imx: gpc: Use GENPD_FLAG_RPM_ALWAYS_ON for ERR009619

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This allows PU domain to be turned off in suspend and save power.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Leonard Crestez 2019-04-30 15:06:12 +00:00 committed by Rafael J. Wysocki
parent ed61e18a4b
commit 8d5d766f00
1 changed files with 11 additions and 2 deletions
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13
drivers/soc/imx/gpc.c
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@ -431,10 +431,19 @@ static int imx_gpc_probe(struct platform_device *pdev)
return ret;
}
/* Disable PU power down in normal operation if ERR009619 is present */
/*
* Disable PU power down by runtime PM if ERR009619 is present.
*
* The PRE clock will be paused for several cycles when turning on the
* PU domain LDO from power down state. If PRE is in use at that time,
* the IPU/PRG cannot get the correct display data from the PRE.
*
* This is not a concern when the whole system enters suspend state, so
* it's safe to power down PU in this case.
*/
if (of_id_data->err009619_present)
imx_gpc_domains[GPC_PGC_DOMAIN_PU].base.flags |=
GENPD_FLAG_ALWAYS_ON;
GENPD_FLAG_RPM_ALWAYS_ON;
/* Keep DISP always on if ERR006287 is present */
if (of_id_data->err006287_present)