From: Chris Packham <chris.packham@alliedtelesis.co.nz>
To: linux-mtd@lists.infradead.org, andrew@lunn.ch,
dwmw2@infradead.org, boris.brezillon@free-electrons.com
Cc: linux-kernel@vger.kernel.org,
Chris Packham <chris.packham@alliedtelesis.co.nz>,
Brian Norris <computersforpeace@gmail.com>,
Marek Vasut <marek.vasut@gmail.com>,
Richard Weinberger <richard@nod.at>,
Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org
Subject: [PATCH v5 1/5] mtd: mchp23k256: Add OF device ID table
Date: Fri, 2 Jun 2017 15:21:15 +1200 [thread overview]
Message-ID: <20170602032119.22282-2-chris.packham@alliedtelesis.co.nz> (raw)
In-Reply-To: <20170602032119.22282-1-chris.packham@alliedtelesis.co.nz>
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>
---
Changes in v2:
- collect review/test from Andrew
Changes in v3:
- None
Changes in v4:
- None
Changes in v5:
- None (note this has already been applied to l2-mtd.git)
.../devicetree/bindings/mtd/microchip,mchp23k256.txt | 18 ++++++++++++++++++
drivers/mtd/devices/mchp23k256.c | 8 ++++++++
2 files changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/microchip,mchp23k256.txt
diff --git a/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.txt b/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.txt
new file mode 100644
index 000000000000..25e5ad38b0f0
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.txt
@@ -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>;
+ };
diff --git a/drivers/mtd/devices/mchp23k256.c b/drivers/mtd/devices/mchp23k256.c
index e237db9f1bdb..9d8306a15833 100644
--- a/drivers/mtd/devices/mchp23k256.c
+++ b/drivers/mtd/devices/mchp23k256.c
@@ -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,
--
2.13.0
next prev parent reply other threads:[~2017-06-02 3:21 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-02 3:21 [PATCH v5 0/5] mtd: mchp23k256: device tree and mchp23lcv1024 Chris Packham
2017-06-02 3:21 ` Chris Packham [this message]
2017-06-02 3:21 ` [PATCH v5 2/5] mtd: mchp23k256: switch to mtd_device_register() Chris Packham
2017-06-02 3:21 ` [PATCH v5 3/5] mtd: handle partitioning on devices with 0 erasesize Chris Packham
2017-06-08 23:26 ` Brian Norris
2017-07-04 3:22 ` Chris Packham
2017-07-08 1:14 ` Brian Norris
2017-06-02 3:21 ` [PATCH v5 4/5] mtd: mchp23k256: add partitioning support Chris Packham
2017-06-08 23:33 ` Brian Norris
2017-06-08 23:40 ` Chris Packham
2017-06-02 3:21 ` [PATCH v5 5/5] mtd: mchp23k256: Add support for mchp23lcv1024 Chris Packham
2017-06-02 5:36 ` [PATCH v5 0/5] mtd: mchp23k256: device tree and mchp23lcv1024 Boris Brezillon
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