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documentation: Fix pinctrl documentation for Meson8 / Meson8b

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Fix pin controller documentation introducing the new compatibles for
the pinctrl drivers specific for aobus / cbus.

This is needed because we have changed the pin controller driver: we
have now a single specialized pinctrl driver / compatible for each bus
the controller is attached to, instead of one single driver dealing with
all the controllers we have on different buses.

Signed-off-by: Carlo Caione <carlo@endlessm.com>
Acked-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Carlo Caione 2016-03-23 10:14:00 +01:00
parent b60e1157d8
commit 11ca873574
1 changed files with 7 additions and 31 deletions
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38
Documentation/devicetree/bindings/pinctrl/meson,pinctrl.txt
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@ -1,13 +1,16 @@
== Amlogic Meson pinmux controller ==
Required properties for the root node:
- compatible: "amlogic,meson8-pinctrl" or "amlogic,meson8b-pinctrl"
- compatible: one of "amlogic,meson8-cbus-pinctrl"
"amlogic,meson8b-cbus-pinctrl"
"amlogic,meson8-aobus-pinctrl"
"amlogic,meson8b-aobus-pinctrl"
- reg: address and size of registers controlling irq functionality
=== GPIO sub-nodes ===
The 2 power domains of the controller (regular and always-on) are
represented as sub-nodes and each of them acts as a GPIO controller.
The GPIO bank for the controller is represented as a sub-node and it acts as a
GPIO controller.
Required properties for sub-nodes are:
- reg: should contain address and size for mux, pull-enable, pull and
@ -18,10 +21,6 @@ Required properties for sub-nodes are:
- gpio-controller: identifies the node as a gpio controller
- #gpio-cells: must be 2
Valid sub-node names are:
- "banks" for the regular domain
- "ao-bank" for the always-on domain
=== Other sub-nodes ===
Child nodes without the "gpio-controller" represent some desired
@ -45,7 +44,7 @@ pinctrl-bindings.txt
=== Example ===
pinctrl: pinctrl@c1109880 {
compatible = "amlogic,meson8-pinctrl";
compatible = "amlogic,meson8-cbus-pinctrl";
reg = <0xc1109880 0x10>;
#address-cells = <1>;
#size-cells = <1>;
@ -61,15 +60,6 @@ pinctrl-bindings.txt
#gpio-cells = <2>;
};
gpio_ao: ao-bank@c1108030 {
reg = <0xc8100014 0x4>,
<0xc810002c 0x4>,
<0xc8100024 0x8>;
reg-names = "mux", "pull", "gpio";
gpio-controller;
#gpio-cells = <2>;
};
nand {
mux {
groups = "nand_io", "nand_io_ce0", "nand_io_ce1",
@ -79,18 +69,4 @@ pinctrl-bindings.txt
function = "nand";
};
};
uart_ao_a {
mux {
groups = "uart_tx_ao_a", "uart_rx_ao_a",
"uart_cts_ao_a", "uart_rts_ao_a";
function = "uart_ao";
};
conf {
pins = "GPIOAO_0", "GPIOAO_1",
"GPIOAO_2", "GPIOAO_3";
bias-disable;
};
};
};