Update the DT bindings documentation with the optional gpio-reserved-ranges
properties.
Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
Reviewed-by: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
---
V2 --> V3
* Incorporated review comments.
---
.../devicetree/bindings/gpio/renesas,gpio-rcar.txt | 61 +++++++++++++---------
1 file changed, 35 insertions(+), 26 deletions(-)
diff --git a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
index 378f132..f8c81e4 100644
--- a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
+++ b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
@@ -38,7 +38,7 @@ Required Properties:
- #gpio-cells: Should be 2. The first cell is the GPIO number and the second
cell specifies GPIO flags, as defined in <dt-bindings/gpio/gpio.h>. Only the
GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported.
- - gpio-ranges: Range of pins managed by the GPIO controller.
+ - gpio-ranges: See gpio.txt.
Optional properties:
@@ -46,35 +46,44 @@ Optional properties:
mandatory if the hardware implements a controllable functional clock for
the GPIO instance.
-Please refer to gpio.txt in this directory for details of gpio-ranges property
-and the common GPIO bindings used by client devices.
+ - gpio-reserved-ranges: See gpio.txt.
+
+Please refer to gpio.txt in this directory for the common GPIO bindings used by
+client devices.
The GPIO controller also acts as an interrupt controller. It uses the default
two cells specifier as described in Documentation/devicetree/bindings/
interrupt-controller/interrupts.txt.
-Example: R8A7779 (R-Car H1) GPIO controller nodes
+Example: R8A77470 (RZ/G1C) GPIO controller nodes
- gpio0: gpio@ffc40000 {
- compatible = "renesas,gpio-r8a7779", "renesas,rcar-gen1-gpio";
- reg = <0xffc40000 0x2c>;
- interrupt-parent = <&gic>;
- interrupts = <0 141 0x4>;
- #gpio-cells = <2>;
- gpio-controller;
- gpio-ranges = <&pfc 0 0 32>;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ gpio0: gpio@e6050000 {
+ compatible = "renesas,gpio-r8a77470",
+ "renesas,rcar-gen2-gpio";
+ reg = <0 0xe6050000 0 0x50>;
+ interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ gpio-ranges = <&pfc 0 0 23>;
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ clocks = <&cpg CPG_MOD 912>;
+ power-domains = <&sysc R8A77470_PD_ALWAYS_ON>;
+ resets = <&cpg 912>;
+ };
...
- gpio6: gpio@ffc46000 {
- compatible = "renesas,gpio-r8a7779", "renesas,rcar-gen1-gpio";
- reg = <0xffc46000 0x2c>;
- interrupt-parent = <&gic>;
- interrupts = <0 147 0x4>;
- #gpio-cells = <2>;
- gpio-controller;
- gpio-ranges = <&pfc 0 192 9>;
- interrupt-controller;
- #interrupt-cells = <2>;
- };
+ gpio3: gpio@e6053000 {
+ compatible = "renesas,gpio-r8a77470",
+ "renesas,rcar-gen2-gpio";
+ reg = <0 0xe6053000 0 0x50>;
+ interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ gpio-ranges = <&pfc 0 96 30>;
+ gpio-reserved-ranges = <17 10>;
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ clocks = <&cpg CPG_MOD 909>;
+ power-domains = <&sysc R8A77470_PD_ALWAYS_ON>;
+ resets = <&cpg 909>;
+ };
--
2.7.4
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