lkml.org 
[lkml]   [2018]   [Sep]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH v2 2/3] dt-bindings: fpga: Add bindings for ZynqMP nvmem driver
Date
Add documentation to describe Xilinx ZynqMP nvmem driver
bindings.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
---
Changes for v2:
-Moved nvmem_firmware node as a child to
firwmare node.

.../firmware/xilinx/xlnx,zynqmp-firmware.txt | 35 ++++++++++++++++++++++
1 file changed, 35 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt
index 1b431d9..4b95fcc 100644
--- a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt
+++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt
@@ -17,6 +17,19 @@ Required properties:
- "smc" : SMC #0, following the SMCCC
- "hvc" : HVC #0, following the SMCCC

+--------------------------------------------------------------------------
+= Zynq UltraScale+ MPSoC nvmem firmware driver binding =
+--------------------------------------------------------------------------
+The nvmem_firmware node provides access to the hardware related data
+like soc revision, IDCODE... etc, By using the firmware interface.
+
+Required properties:
+- compatible: should be "xlnx,zynqmp-nvmem-fw"
+
+= Data cells =
+Are child nodes of silicon id, bindings of which as described in
+bindings/nvmem/nvmem.txt
+
-------
Example
-------
@@ -25,5 +38,27 @@ firmware {
zynqmp_firmware: zynqmp-firmware {
compatible = "xlnx,zynqmp-firmware";
method = "smc";
+ nvmem_firmware {
+ compatible = "xlnx,zynqmp-nvmem-fw";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ /* Data cells */
+ soc_revision: soc_revision {
+ reg = <0x0 0x4>;
+ };
+ };
};
};
+
+= Data consumers =
+Are device nodes which consume nvmem data cells.
+
+For example:
+
+ pcap {
+ ...
+ nvmem-cells = <&soc_revision>;
+ nvmem-cell-names = "soc_revision";
+ };
+
--
2.7.4
\
 
 \ /
  Last update: 2018-09-04 11:53    [W:0.075 / U:3.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site