The GPIO block for ls2080a platform has little endian registers,
the GPIO driver needs this property to read/write registers by
right interface.
Signed-off-by: Liu Gang <Gang.Liu@xxxxxxxxxxxxx>
---
V2 changes: No
Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt | 3 +++
arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi | 4 ++++
2 files changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt b/Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt
index f2455c5..c836dab 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt
@@ -10,6 +10,9 @@ Required properties:
the second cell is used to specify the gpio polarity:
0 = active high
1 = active low
+- little-endian : Should be set if the GPIO has little endian
+ registers. No the property means the GPIO
+ registers are big endian mode.
Example:
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
index e81cd48..0099205 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
@@ -277,6 +277,7 @@
reg = <0x0 0x2300000 0x0 0x10000>;
interrupts = <0 36 0x4>; /* Level high type */
gpio-controller;
+ little-endian;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
@@ -287,6 +288,7 @@
reg = <0x0 0x2310000 0x0 0x10000>;
interrupts = <0 36 0x4>; /* Level high type */
gpio-controller;
+ little-endian;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
@@ -297,6 +299,7 @@
reg = <0x0 0x2320000 0x0 0x10000>;
interrupts = <0 37 0x4>; /* Level high type */
gpio-controller;
+ little-endian;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
@@ -307,6 +310,7 @@
reg = <0x0 0x2330000 0x0 0x10000>;
interrupts = <0 37 0x4>; /* Level high type */
gpio-controller;
+ little-endian;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
--
2.1.0.27.g96db324
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