[PATCH 2/3] mtd: spi-nor: support vcc-supply regulator

[Peng Fan (OSS)]

From: Peng Fan <peng.fan at nxp.com>

spi nor flash needs power supply to work properly. The power supply
maybe software controllable per board design. So add the support
for an optional vcc-supply regulator.

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 drivers/mtd/spi-nor/core.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 9d6e85bf227b..0449afe6bb20 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -17,6 +17,7 @@
 #include <linux/mtd/spi-nor.h>
 #include <linux/mutex.h>
 #include <linux/of_platform.h>
+#include <linux/regulator/consumer.h>
 #include <linux/sched/task_stack.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
@@ -3462,6 +3463,10 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
 	if (!nor->bouncebuf)
 		return -ENOMEM;
 
+	ret = devm_regulator_get_enable_optional(dev, "vcc");
+	if (ret)
+		return ret;
+
 	ret = spi_nor_hw_reset(nor);
 	if (ret)
 		return ret;

-- 
2.37.1