From: Peng Fan <peng.fan@xxxxxxx> 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@xxxxxxx> --- 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
