[PATCH 4/5] dt-binding: mtd: onenand/samsung: Add device tree support

Paweł Chmiel
2019-04-26T16:42:55Z

From: Tomasz Figa <tomasz.figa@gmail.com>

This patch adds dt-bindings for Samsung OneNAND driver.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
---
.../bindings/mtd/samsung-onenand.txt | 46 +++++++++++++++++++
1 file changed, 46 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/samsung-onenand.txt

diff --git a/Documentation/devicetree/bindings/mtd/samsung-onenand.txt b/Documentation/devicetree/bindings/mtd/samsung-onenand.txt
new file mode 100644
index 000000000000..341d97cc1513
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/samsung-onenand.txt
@@ -0,0 +1,46 @@
+Device tree bindings for Samsung SoC OneNAND controller
+
+Required properties:
+ - compatible : value should be either of the following.
+ (a) "samsung,s3c6400-onenand" - for onenand controller compatible with
+ S3C6400 SoC,
+ (b) "samsung,s3c6410-onenand" - for onenand controller compatible with
+ S3C6410 SoC,
+ (c) "samsung,s5pc100-onenand" - for onenand controller compatible with
+ S5PC100 SoC,
+ (d) "samsung,s5pv210-onenand" - for onenand controller compatible with
+ S5PC110/S5PV210 SoCs.
+
+ - reg : two memory mapped register regions:
+ - first entry: control registers.
+ - second and next entries: memory windows of particular OneNAND chips;
+ for variants a), b) and c) only one is allowed, in case of d) up to
+ two chips can be supported.
+
+ - interrupt-parent : phandle of interrupt controller to which the OneNAND
+ controller is wired,
+ - interrupts : specifier of interrupt signal to which the OneNAND controller
+ is wired; should contain just one entry.
+ - clock-names : should contain two entries:
+ - "bus" - bus clock of the controller,
+ - "onenand" - clock supplied to OneNAND memory.
+ - clock: should contain list of phandles and specifiers for all clocks listed
+ in clock-names property.
+ - #address-cells : must be 1,
+ - #size-cells : must be 1.
+
+For partition table parsing (optional) please refer to:
+ [1] Documentation/devicetree/bindings/mtd/partition.txt
+
+Example for an s5pv210 board:
+
+ onenand@b0600000 {
+ compatible = "samsung,s5pv210-onenand";
+ reg = <0xb0600000 0x2000>, <0xb0000000 0x20000>;
+ interrupt-parent = <&vic1>;
+ interrupts = <31>;
+ clock-names = "bus", "onenand";
+ clocks = <&clocks NANDXL>, <&clocks DOUT_FLASH>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
--
2.20.1