142 lines
6.5 KiB
Plaintext
142 lines
6.5 KiB
Plaintext
Cirrus Logic Lochnagar Audio Development Board
|
|
|
|
Lochnagar is an evaluation and development board for Cirrus Logic
|
|
Smart CODEC and Amp devices. It allows the connection of most Cirrus
|
|
Logic devices on mini-cards, as well as allowing connection of
|
|
various application processor systems to provide a full evaluation
|
|
platform. Audio system topology, clocking and power can all be
|
|
controlled through the Lochnagar, allowing the device under test
|
|
to be used in a variety of possible use cases.
|
|
|
|
This binding document describes the binding for the pinctrl portion
|
|
of the driver.
|
|
|
|
Also see these documents for generic binding information:
|
|
[1] GPIO : ../gpio/gpio.txt
|
|
[2] Pinctrl: ../pinctrl/pinctrl-bindings.txt
|
|
|
|
And these for relevant defines:
|
|
[3] include/dt-bindings/pinctrl/lochnagar.h
|
|
|
|
This binding must be part of the Lochnagar MFD binding:
|
|
[4] ../mfd/cirrus,lochnagar.txt
|
|
|
|
Required properties:
|
|
|
|
- compatible : One of the following strings:
|
|
"cirrus,lochnagar-pinctrl"
|
|
|
|
- gpio-controller : Indicates this device is a GPIO controller.
|
|
- #gpio-cells : Must be 2. The first cell is the pin number, see
|
|
[3] for available pins and the second cell is used to specify
|
|
optional parameters, see [1].
|
|
- gpio-ranges : Range of pins managed by the GPIO controller, see
|
|
[1]. Both the GPIO and Pinctrl base should be set to zero and the
|
|
count to the appropriate of the LOCHNAGARx_PIN_NUM_GPIOS define,
|
|
see [3].
|
|
|
|
- pinctrl-names : A pinctrl state named "default" must be defined.
|
|
- pinctrl-0 : A phandle to the default pinctrl state.
|
|
|
|
Required sub-nodes:
|
|
|
|
The pin configurations are defined as a child of the pinctrl states
|
|
node, see [2]. Each sub-node can have the following properties:
|
|
- groups : A list of groups to select (either this or "pins" must be
|
|
specified), available groups:
|
|
codec-aif1, codec-aif2, codec-aif3, dsp-aif1, dsp-aif2, psia1,
|
|
psia2, gf-aif1, gf-aif2, gf-aif3, gf-aif4, spdif-aif, usb-aif1,
|
|
usb-aif2, adat-aif, soundcard-aif
|
|
- pins : A list of pin names to select (either this or "groups" must
|
|
be specified), available pins:
|
|
fpga-gpio1, fpga-gpio2, fpga-gpio3, fpga-gpio4, fpga-gpio5,
|
|
fpga-gpio6, codec-gpio1, codec-gpio2, codec-gpio3, codec-gpio4,
|
|
codec-gpio5, codec-gpio6, codec-gpio7, codec-gpio8, dsp-gpio1,
|
|
dsp-gpio2, dsp-gpio3, dsp-gpio4, dsp-gpio5, dsp-gpio6, gf-gpio2,
|
|
gf-gpio3, gf-gpio7, codec-aif1-bclk, codec-aif1-rxdat,
|
|
codec-aif1-lrclk, codec-aif1-txdat, codec-aif2-bclk,
|
|
codec-aif2-rxdat, codec-aif2-lrclk, codec-aif2-txdat,
|
|
codec-aif3-bclk, codec-aif3-rxdat, codec-aif3-lrclk,
|
|
codec-aif3-txdat, dsp-aif1-bclk, dsp-aif1-rxdat, dsp-aif1-lrclk,
|
|
dsp-aif1-txdat, dsp-aif2-bclk, dsp-aif2-rxdat,
|
|
dsp-aif2-lrclk, dsp-aif2-txdat, psia1-bclk, psia1-rxdat,
|
|
psia1-lrclk, psia1-txdat, psia2-bclk, psia2-rxdat, psia2-lrclk,
|
|
psia2-txdat, gf-aif3-bclk, gf-aif3-rxdat, gf-aif3-lrclk,
|
|
gf-aif3-txdat, gf-aif4-bclk, gf-aif4-rxdat, gf-aif4-lrclk,
|
|
gf-aif4-txdat, gf-aif1-bclk, gf-aif1-rxdat, gf-aif1-lrclk,
|
|
gf-aif1-txdat, gf-aif2-bclk, gf-aif2-rxdat, gf-aif2-lrclk,
|
|
gf-aif2-txdat, dsp-uart1-rx, dsp-uart1-tx, dsp-uart2-rx,
|
|
dsp-uart2-tx, gf-uart2-rx, gf-uart2-tx, usb-uart-rx,
|
|
codec-pdmclk1, codec-pdmdat1, codec-pdmclk2, codec-pdmdat2,
|
|
codec-dmicclk1, codec-dmicdat1, codec-dmicclk2, codec-dmicdat2,
|
|
codec-dmicclk3, codec-dmicdat3, codec-dmicclk4, codec-dmicdat4,
|
|
dsp-dmicclk1, dsp-dmicdat1, dsp-dmicclk2, dsp-dmicdat2, i2c2-scl,
|
|
i2c2-sda, i2c3-scl, i2c3-sda, i2c4-scl, i2c4-sda, dsp-standby,
|
|
codec-mclk1, codec-mclk2, dsp-clkin, psia1-mclk, psia2-mclk,
|
|
gf-gpio1, gf-gpio5, dsp-gpio20, led1, led2
|
|
- function : The mux function to select, available functions:
|
|
aif, fpga-gpio1, fpga-gpio2, fpga-gpio3, fpga-gpio4, fpga-gpio5,
|
|
fpga-gpio6, codec-gpio1, codec-gpio2, codec-gpio3, codec-gpio4,
|
|
codec-gpio5, codec-gpio6, codec-gpio7, codec-gpio8, dsp-gpio1,
|
|
dsp-gpio2, dsp-gpio3, dsp-gpio4, dsp-gpio5, dsp-gpio6, gf-gpio2,
|
|
gf-gpio3, gf-gpio7, gf-gpio1, gf-gpio5, dsp-gpio20, codec-clkout,
|
|
dsp-clkout, pmic-32k, spdif-clkout, clk-12m288, clk-11m2986,
|
|
clk-24m576, clk-22m5792, xmos-mclk, gf-clkout1, gf-mclk1,
|
|
gf-mclk3, gf-mclk2, gf-clkout2, codec-mclk1, codec-mclk2,
|
|
dsp-clkin, psia1-mclk, psia2-mclk, spdif-mclk, codec-irq,
|
|
codec-reset, dsp-reset, dsp-irq, dsp-standby, codec-pdmclk1,
|
|
codec-pdmdat1, codec-pdmclk2, codec-pdmdat2, codec-dmicclk1,
|
|
codec-dmicdat1, codec-dmicclk2, codec-dmicdat2, codec-dmicclk3,
|
|
codec-dmicdat3, codec-dmicclk4, codec-dmicdat4, dsp-dmicclk1,
|
|
dsp-dmicdat1, dsp-dmicclk2, dsp-dmicdat2, dsp-uart1-rx,
|
|
dsp-uart1-tx, dsp-uart2-rx, dsp-uart2-tx, gf-uart2-rx,
|
|
gf-uart2-tx, usb-uart-rx, usb-uart-tx, i2c2-scl, i2c2-sda,
|
|
i2c3-scl, i2c3-sda, i2c4-scl, i2c4-sda, spdif-aif, psia1,
|
|
psia1-bclk, psia1-lrclk, psia1-rxdat, psia1-txdat, psia2,
|
|
psia2-bclk, psia2-lrclk, psia2-rxdat, psia2-txdat, codec-aif1,
|
|
codec-aif1-bclk, codec-aif1-lrclk, codec-aif1-rxdat,
|
|
codec-aif1-txdat, codec-aif2, codec-aif2-bclk, codec-aif2-lrclk,
|
|
codec-aif2-rxdat, codec-aif2-txdat, codec-aif3, codec-aif3-bclk,
|
|
codec-aif3-lrclk, codec-aif3-rxdat, codec-aif3-txdat, dsp-aif1,
|
|
dsp-aif1-bclk, dsp-aif1-lrclk, dsp-aif1-rxdat, dsp-aif1-txdat,
|
|
dsp-aif2, dsp-aif2-bclk, dsp-aif2-lrclk, dsp-aif2-rxdat,
|
|
dsp-aif2-txdat, gf-aif3, gf-aif3-bclk, gf-aif3-lrclk,
|
|
gf-aif3-rxdat, gf-aif3-txdat, gf-aif4, gf-aif4-bclk,
|
|
gf-aif4-lrclk, gf-aif4-rxdat, gf-aif4-txdat, gf-aif1,
|
|
gf-aif1-bclk, gf-aif1-lrclk, gf-aif1-rxdat, gf-aif1-txdat,
|
|
gf-aif2, gf-aif2-bclk, gf-aif2-lrclk, gf-aif2-rxdat,
|
|
gf-aif2-txdat, usb-aif1, usb-aif2, adat-aif, soundcard-aif,
|
|
|
|
- output-enable : Specifies that an AIF group will be used as a master
|
|
interface (either this or input-enable is required if a group is
|
|
being muxed to an AIF)
|
|
- input-enable : Specifies that an AIF group will be used as a slave
|
|
interface (either this or output-enable is required if a group is
|
|
being muxed to an AIF)
|
|
|
|
Example:
|
|
|
|
lochnagar-pinctrl {
|
|
compatible = "cirrus,lochnagar-pinctrl";
|
|
|
|
gpio-controller;
|
|
#gpio-cells = <2>;
|
|
gpio-ranges = <&lochnagar 0 0 LOCHNAGAR2_PIN_NUM_GPIOS>;
|
|
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pin-settings>;
|
|
|
|
pin-settings: pin-settings {
|
|
ap-aif {
|
|
input-enable;
|
|
groups = "gf-aif1";
|
|
function = "codec-aif3";
|
|
};
|
|
codec-aif {
|
|
output-enable;
|
|
groups = "codec-aif3";
|
|
function = "gf-aif1";
|
|
};
|
|
};
|
|
};
|