diff options
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/imx/gpc.c | 13 | ||||
| -rw-r--r-- | drivers/soc/sunxi/Kconfig | 1 |
2 files changed, 12 insertions, 2 deletions
diff --git a/drivers/soc/imx/gpc.c b/drivers/soc/imx/gpc.c index 7d14a4b4e82a..29b43651c261 100644 --- a/drivers/soc/imx/gpc.c +++ b/drivers/soc/imx/gpc.c @@ -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) diff --git a/drivers/soc/sunxi/Kconfig b/drivers/soc/sunxi/Kconfig index 353b07e40176..e84eb4e59f58 100644 --- a/drivers/soc/sunxi/Kconfig +++ b/drivers/soc/sunxi/Kconfig @@ -4,6 +4,7 @@ config SUNXI_SRAM bool default ARCH_SUNXI + select REGMAP_MMIO help Say y here to enable the SRAM controller support. This device is responsible on mapping the SRAM in the sunXi SoCs |
