diff mbox series

[v5,3/3] mtd: spi-nor: support vcc-supply regulator

Message ID 20241111111946.9048-3-tudor.ambarus@linaro.org (mailing list archive)
State New
Headers show
Series [v5,1/3] dt-bindings: mtd: jedec,spi-nor: add optional vcc-supply | expand

Commit Message

Tudor Ambarus Nov. 11, 2024, 11:19 a.m. UTC 
From: Peng Fan <peng.fan@nxp.com>

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@nxp.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
[ta: move devm_regulator_get_enable() to spi_nor_probe().]
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
v5: introduce the local dev variable to its own patch
v4: move the devm_regulator_get_enable() call from spi_nor_scan to
spi_nor_probe(). We no longer add support for the drivers under
drivers/mtd/spi-nor/controllers/. Those drivers shall be moved under
drivers/spi.

 drivers/mtd/spi-nor/core.c | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Pratyush Yadav Nov. 12, 2024, 1:06 p.m. UTC | #1 
On Mon, Nov 11 2024, Tudor Ambarus wrote:

> From: Peng Fan <peng.fan@nxp.com>
>
> 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@nxp.com>
> Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
> [ta: move devm_regulator_get_enable() to spi_nor_probe().]
> Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>

Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
diff mbox series

Patch

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 2a329084505c..19eb98bd6821 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>
@@ -3587,6 +3588,10 @@  static int spi_nor_probe(struct spi_mem *spimem)
 	char *flash_name;
 	int ret;
 
+	ret = devm_regulator_get_enable(dev, "vcc");
+	if (ret)
+		return ret;
+
 	nor = devm_kzalloc(dev, sizeof(*nor), GFP_KERNEL);
 	if (!nor)
 		return -ENOMEM;