mtd: mchp23k256: Add OF device ID table

This allows registering of this device via a Device Tree.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Chris Packham 2017-05-25 11:49:12 +12:00 committed by Brian Norris
parent e3db1289e7
commit 4db4d35ebd
2 changed files with 26 additions and 0 deletions

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@ -0,0 +1,18 @@
* MTD SPI driver for Microchip 23K256 (and similar) serial SRAM
Required properties:
- #address-cells, #size-cells : Must be present if the device has sub-nodes
representing partitions.
- compatible : Must be "microchip,mchp23k256"
- reg : Chip-Select number
- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at
Example:
spi-sram@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "microchip,mchp23k256";
reg = <0>;
spi-max-frequency = <20000000>;
};

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@ -19,6 +19,7 @@
#include <linux/sizes.h>
#include <linux/spi/flash.h>
#include <linux/spi/spi.h>
#include <linux/of_device.h>
struct mchp23k256_flash {
struct spi_device *spi;
@ -166,9 +167,16 @@ static int mchp23k256_remove(struct spi_device *spi)
return mtd_device_unregister(&flash->mtd);
}
static const struct of_device_id mchp23k256_of_table[] = {
{ .compatible = "microchip,mchp23k256" },
{}
};
MODULE_DEVICE_TABLE(of, mchp23k256_of_table);
static struct spi_driver mchp23k256_driver = {
.driver = {
.name = "mchp23k256",
.of_match_table = of_match_ptr(mchp23k256_of_table),
},
.probe = mchp23k256_probe,
.remove = mchp23k256_remove,