Commit 8d5d766f authored by Leonard Crestez's avatar Leonard Crestez Committed by Rafael J. Wysocki

soc: imx: gpc: Use GENPD_FLAG_RPM_ALWAYS_ON for ERR009619

This allows PU domain to be turned off in suspend and save power.
Signed-off-by: default avatarLeonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent ed61e18a
...@@ -431,10 +431,19 @@ static int imx_gpc_probe(struct platform_device *pdev) ...@@ -431,10 +431,19 @@ static int imx_gpc_probe(struct platform_device *pdev)
return ret; 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) if (of_id_data->err009619_present)
imx_gpc_domains[GPC_PGC_DOMAIN_PU].base.flags |= 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 */ /* Keep DISP always on if ERR006287 is present */
if (of_id_data->err006287_present) if (of_id_data->err006287_present)
......
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