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

On 23 September 2016 at 15:39, Rob Herring [off-list ref] wrote:

On Tue, Sep 13, 2016 at 09:51:16PM +0200, Joachim Eastwood wrote:

quoted

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.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.

Is this determined at run-time? If not flashless devices should have a
different compatible string to determine this then.

It is determined at run time by reading a 'CHIP ID' register in CREG
(syscon) that is present on both Flash and Flashless devices.


regards,
Joachim Eastwood