[PATCH 2/3] firmware: dt: document lpc1850 boot ROM bindings

[Joachim Eastwood <manabian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Binding documentation for the NXP LPC boot ROM.

Signed-off-by: Joachim Eastwood <manabian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 .../devicetree/bindings/firmware/nxp,boot-rom.txt   | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/firmware/nxp,boot-rom.txt

diff --git a/Documentation/devicetree/bindings/firmware/nxp,boot-rom.txt b/Documentation/devicetree/bindings/firmware/nxp,boot-rom.txt
new file mode 100644
index 0000000..5f3a044
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/nxp,boot-rom.txt
@@ -0,0 +1,21 @@
+* NXP LPC boot ROM
+
+NXP LPC microcontrollers contains a boot ROM used to retrieve part information
+and access internal Flash memory and OTP memory. Note that the Flash API is
+not available on Flashless devices.
+
+Required properties:
+- compatible: must contain the following: "nxp,lpc1850-boot-rom".
+- reg: physical base address of the ROM and length of memory mapped region.
+- syscon: handle to NXP CREG (Configuration Registers) syscon block.
+- nvmem-cells: = handle to OTP memory cell which contain the part ID.
+- nvmem-cell-names: must contain "PartID".
+
+Example:
+boot_rom: firmware@10400000 {
+	compatible = "nxp,lpc1850-boot-rom";
+	reg = <0x10400000 0x10000>;
+	syscon = <&creg>;
+	nvmem-cells = <&part_id>;
+	nvmem-cell-names = "PartID";
+};
-- 
2.9.3

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