[U-Boot] [PATCH 4/5] spi: cadence_qspi: add reset handling

[Simon Goldschmidt]

This adds reset handling to the devicetree-enabled denalid nand driver.

For backwards compatibility, only a warning is printed when failing to
get reset handles.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
---

 drivers/spi/cadence_qspi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 11fce9c4fe..f68c827e6d 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <fdtdec.h>
 #include <malloc.h>
+#include <reset.h>
 #include <spi.h>
 #include <linux/errno.h>
 #include "cadence_qspi.h"
@@ -154,10 +155,18 @@ static int cadence_spi_probe(struct udevice *bus)
 {
 	struct cadence_spi_platdata *plat = bus->platdata;
 	struct cadence_spi_priv *priv = dev_get_priv(bus);
+	struct reset_ctl_bulk reset_bulk;
+	int ret;
 
 	priv->regbase = plat->regbase;
 	priv->ahbbase = plat->ahbbase;
 
+	ret = reset_get_bulk(bus, &reset_bulk);
+	if (ret)
+		dev_warn(bus, "Cant' get reset: %d\n", ret);
+	else
+		reset_deassert_bulk(&reset_bulk);
+
 	if (!priv->qspi_is_init) {
 		cadence_qspi_apb_controller_init(plat);
 		priv->qspi_is_init = 1;
-- 
2.17.1