[PATCH 2/3] firmware: dt: document lpc1850 boot ROM bindings
From: robh@kernel.org (Rob Herring)
Date: 2016-09-23 13:39:49
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linux-devicetree
On Tue, Sep 13, 2016 at 09:51:16PM +0200, Joachim Eastwood wrote:
quoted hunk
Binding documentation for the NXP LPC boot ROM. Signed-off-by: Joachim Eastwood <redacted> --- .../devicetree/bindings/firmware/nxp,boot-rom.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/nxp,boot-rom.txtdiff --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.
Is this determined at run-time? If not flashless devices should have a different compatible string to determine this then.
+
+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 at 10400000 {
+ compatible = "nxp,lpc1850-boot-rom";
+ reg = <0x10400000 0x10000>;
+ syscon = <&creg>;
+ nvmem-cells = <&part_id>;
+ nvmem-cell-names = "PartID";
+};
--
2.9.3