2019-05-17 02:47:55

by Ran Wang

Subject: [PATCH 2/3] Documentation: dt: binding: fsl: Add 'little-endian' and update Chassis define

By default, QorIQ SoC's RCPM register block is Big Endian. But
there are some exceptions, such as LS1088A and LS2088A, are Little
Endian. So add this optional property to help identify them.

Actually LS2021A and other Layerscapes won't totally follow Chassis
2.1, so separate them from powerpc SoC.

Signed-off-by: Ran Wang <[email protected]>
---
Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
index e284e4e..058154c 100644
--- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
+++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
@@ -20,6 +20,7 @@ Required properites:
* "fsl,qoriq-rcpm-1.0": for chassis 1.0 rcpm
* "fsl,qoriq-rcpm-2.0": for chassis 2.0 rcpm
* "fsl,qoriq-rcpm-2.1": for chassis 2.1 rcpm
+ * "fsl,qoriq-rcpm-2.1+": for chassis 2.1+ rcpm

All references to "1.0" and "2.0" refer to the QorIQ chassis version to
which the chip complies.
@@ -27,7 +28,12 @@ Chassis Version Example Chips
--------------- -------------------------------
1.0 p4080, p5020, p5040, p2041, p3041
2.0 t4240, b4860, b4420
-2.1 t1040, ls1021
+2.1 t1040,
+2.1+ ls1021a, ls1012a, ls1043a, ls1046a
+
+Optional properties:
+ - little-endian : RCPM register block is Little Endian. Without it RCPM
+ will be Big Endian (default case).

Example:
The RCPM node for T4240:
--
1.7.1

2019-06-13 22:07:58

by Rob Herring (Arm)

Subject: Re: [PATCH 2/3] Documentation: dt: binding: fsl: Add 'little-endian' and update Chassis define

On Fri, 17 May 2019 10:47:47 +0800, Ran Wang wrote:
> By default, QorIQ SoC's RCPM register block is Big Endian. But
> there are some exceptions, such as LS1088A and LS2088A, are Little
> Endian. So add this optional property to help identify them.
>
> Actually LS2021A and other Layerscapes won't totally follow Chassis
> 2.1, so separate them from powerpc SoC.
>
> Signed-off-by: Ran Wang <[email protected]>
> ---
> Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 8 +++++++-
> 1 files changed, 7 insertions(+), 1 deletions(-)
>

Reviewed-by: Rob Herring <[email protected]>