On 30.09.2024 11:21:27, Marc Kleine-Budde wrote: > On 30.09.2024 17:22:25, Peng Fan (OSS) wrote: > > From: Peng Fan <peng.fan@xxxxxxx> > > > > SPI NOR flashes needs power supply to work properly. The power supply > > maybe software controllable per board design. So add the support > > for an 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..5249c8b13916 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(dev, "vcc"); > > + if (ret) > > + return ret; > > + > > What happens if the SPI-NOR doesn't have a "vcc" regulator? ...the SPI-NOR will use the dummy regulator. regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung Nürnberg | Phone: +49-5121-206917-129 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
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