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authorBiju Das <biju.das@bp.renesas.com>2018-08-07 08:57:03 +0100
committerLinus Walleij <linus.walleij@linaro.org>2018-08-29 10:48:02 +0200
commitc0f6afad46a8ed2c0a2053ec720b1e6da80cf69a (patch)
tree1e814d631bab7e1c08759697b15124b4b951d30c /Documentation/devicetree/bindings/gpio
parent496069b87eea631274c2c35fb6f8c45ad838436b (diff)
dt-bindings: gpio: rcar: Add gpio-reserved-ranges support
Update the DT bindings documentation with the optional gpio-reserved-ranges properties. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio')
-rw-r--r--Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt61
1 files 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 4018ee57a6af..e54a6fbd4ab8 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>;
+ };