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Subject[v2,3/3] Documentation: dt: binding: fsl: Add 'fsl,rcpm-scfg' property
Date
The 'fsl,rcpm-scfg' property is used to fix a bug
that FlexTimer cannot wakeup system in deep sleep on LS1021A

Signed-off-by: Biwen Li <biwen.li@nxp.com>
---
Change in v2:
- update desc of the property 'fsl,rcpm-scfg'

Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
index 5a33619d881d..f8dce247357a 100644
--- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
+++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
@@ -34,6 +34,11 @@ Chassis Version Example Chips
Optional properties:
- little-endian : RCPM register block is Little Endian. Without it RCPM
will be Big Endian (default case).
+ - fsl,rcpm-scfg : LS1021A has defect of failing to get data when
+ reading ippdexpcr. So add this property to help store one
+ copy to specified scfg_scrachpad_addr register for others
+ (such as U-Boot) reference. The first entry must be a link to the
+ SCFG device node, then followed by the offset of registers of SCFG.

Example:
The RCPM node for T4240:
@@ -43,6 +48,14 @@ The RCPM node for T4240:
#fsl,rcpm-wakeup-cells = <2>;
};

+The RCPM node for LS1021A:
+ rcpm: rcpm@1ee2140 {
+ compatible = "fsl,ls1021a-rcpm", "fsl,qoriq-rcpm-2.1+";
+ reg = <0x0 0x1ee2140 0x0 0x8>;
+ #fsl,rcpm-wakeup-cells = <2>;
+ fsl,rcpm-scfg = <&scfg 0x0 0x51c>; /* SCFG_SPARECR8 */
+ };
+
* Freescale RCPM Wakeup Source Device Tree Bindings
-------------------------------------------
Required fsl,rcpm-wakeup property should be added to a device node if the device
--
2.17.1
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