this is enough
upper layers take care for current transfer to finish
---
 drivers/spi/mpc52xx_psc_spi.c |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

Index: work-powerpc.git/drivers/spi/mpc52xx_psc_spi.c
===================================================================
--- work-powerpc.git.orig/drivers/spi/mpc52xx_psc_spi.c
+++ work-powerpc.git/drivers/spi/mpc52xx_psc_spi.c
@@ -613,6 +613,19 @@ static int __exit mpc52xx_psc_spi_of_rem
 	return mpc52xx_psc_spi_do_remove(&op->dev);
 }
 
+static int mpc52xx_psc_spi_of_suspend(struct of_device *op, pm_message_t state)
+{
+	return 0;
+}
+static int mpc52xx_psc_spi_of_resume(struct of_device *op)
+{
+	struct device *dev = &op->dev;
+	struct spi_master *master = dev_get_drvdata(dev);
+	struct mpc52xx_psc_spi *mps = spi_master_get_devdata(master);
+
+	return mpc52xx_psc_spi_port_config(master->bus_num, mps);
+}
+
 static struct of_device_id mpc52xx_psc_spi_of_match[] = {
 	{ .type = "spi", .compatible = "mpc5200-psc-spi", },
 	{},
@@ -626,6 +639,8 @@ static struct of_platform_driver mpc52xx
 	.match_table = mpc52xx_psc_spi_of_match,
 	.probe = mpc52xx_psc_spi_of_probe,
 	.remove = __exit_p(mpc52xx_psc_spi_of_remove),
+	.suspend = mpc52xx_psc_spi_of_suspend,
+	.resume = mpc52xx_psc_spi_of_resume,
 	.driver = {
 		.name = "mpc52xx-psc-spi",
 		.owner = THIS_MODULE,