[...]

-#ifdef CONFIG_PM_SLEEP
-
-static int jz4740_mmc_suspend(struct device *dev)
-{
-       struct jz4740_mmc_host *host = dev_get_drvdata(dev);
-
-       jz_gpio_bulk_suspend(jz4740_mmc_pins, jz4740_mmc_num_pins(host));
-

Shouldn't this be replaced with a call to:
pinctrl_pm_select_sleep_state();

-       return 0;
-}
-
-static int jz4740_mmc_resume(struct device *dev)
-{
-       struct jz4740_mmc_host *host = dev_get_drvdata(dev);
-
-       jz_gpio_bulk_resume(jz4740_mmc_pins, jz4740_mmc_num_pins(host));

Shouldn't this be replaced with a call to:
pinctrl_pm_select_default_state();

[...]

Kind regards
Uffe