fbe8749897
Fix a typo in A37xx pin controllers documentation about uart2 pin group. Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com> Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
184 lines
3.7 KiB
Plaintext
184 lines
3.7 KiB
Plaintext
* Marvell Armada 37xx SoC pin and gpio controller
|
|
|
|
Each Armada 37xx SoC come with two pin and gpio controller one for the
|
|
south bridge and the other for the north bridge.
|
|
|
|
Inside this set of register the gpio latch allows exposing some
|
|
configuration of the SoC and especially the clock frequency of the
|
|
xtal. Hence, this node is a represent as syscon allowing sharing the
|
|
register between multiple hardware block.
|
|
|
|
GPIO and pin controller:
|
|
------------------------
|
|
|
|
Main node:
|
|
|
|
Refer to pinctrl-bindings.txt in this directory for details of the
|
|
common pinctrl bindings used by client devices, including the meaning
|
|
of the phrase "pin configuration node".
|
|
|
|
Required properties for pinctrl driver:
|
|
|
|
- compatible: "marvell,armada3710-sb-pinctrl", "syscon, "simple-mfd"
|
|
for the south bridge
|
|
"marvell,armada3710-nb-pinctrl", "syscon, "simple-mfd"
|
|
for the north bridge
|
|
- reg: The first set of register are for pinctrl/gpio and the second
|
|
set for the interrupt controller
|
|
- interrupts: list of the interrupt use by the gpio
|
|
|
|
Available groups and functions for the North bridge:
|
|
|
|
group: jtag
|
|
- pins 20-24
|
|
- functions jtag, gpio
|
|
|
|
group sdio0
|
|
- pins 8-10
|
|
- functions sdio, gpio
|
|
|
|
group emmc_nb
|
|
- pins 27-35
|
|
- functions emmc, gpio
|
|
|
|
group pwm0
|
|
- pin 11 (GPIO1-11)
|
|
- functions pwm, gpio
|
|
|
|
group pwm1
|
|
- pin 12
|
|
- functions pwm, gpio
|
|
|
|
group pwm2
|
|
- pin 13
|
|
- functions pwm, gpio
|
|
|
|
group pwm3
|
|
- pin 14
|
|
- functions pwm, gpio
|
|
|
|
group pmic1
|
|
- pin 17
|
|
- functions pmic, gpio
|
|
|
|
group pmic0
|
|
- pin 16
|
|
- functions pmic, gpio
|
|
|
|
group i2c2
|
|
- pins 2-3
|
|
- functions i2c, gpio
|
|
|
|
group i2c1
|
|
- pins 0-1
|
|
- functions i2c, gpio
|
|
|
|
group spi_cs1
|
|
- pin 17
|
|
- functions spi, gpio
|
|
|
|
group spi_cs2
|
|
- pin 18
|
|
- functions spi, gpio
|
|
|
|
group spi_cs3
|
|
- pin 19
|
|
- functions spi, gpio
|
|
|
|
group onewire
|
|
- pin 4
|
|
- functions onewire, gpio
|
|
|
|
group uart1
|
|
- pins 25-26
|
|
- functions uart, gpio
|
|
|
|
group spi_quad
|
|
- pins 15-16
|
|
- functions spi, gpio
|
|
|
|
group uart2
|
|
- pins 9-10 and 18-19
|
|
- functions uart, gpio
|
|
|
|
Available groups and functions for the South bridge:
|
|
|
|
group usb32_drvvbus0
|
|
- pin 36
|
|
- functions drvbus, gpio
|
|
|
|
group usb2_drvvbus1
|
|
- pin 37
|
|
- functions drvbus, gpio
|
|
|
|
group sdio_sb
|
|
- pins 60-64
|
|
- functions sdio, gpio
|
|
|
|
group rgmii
|
|
- pins 42-55
|
|
- functions mii, gpio
|
|
|
|
group pcie1
|
|
- pins 39-40
|
|
- functions pcie, gpio
|
|
|
|
group ptp
|
|
- pins 56-58
|
|
- functions ptp, gpio
|
|
|
|
group ptp_clk
|
|
- pin 57
|
|
- functions ptp, mii
|
|
|
|
group ptp_trig
|
|
- pin 58
|
|
- functions ptp, mii
|
|
|
|
group mii_col
|
|
- pin 59
|
|
- functions mii, mii_err
|
|
|
|
GPIO subnode:
|
|
|
|
Please refer to gpio.txt in this directory for details of gpio-ranges property
|
|
and the common GPIO bindings used by client devices.
|
|
|
|
Required properties for gpio driver under the gpio subnode:
|
|
- interrupts: List of interrupt specifier for the controllers interrupt.
|
|
- gpio-controller: Marks the device node as a gpio controller.
|
|
- #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.
|
|
|
|
Xtal Clock bindings for Marvell Armada 37xx SoCs
|
|
------------------------------------------------
|
|
|
|
see Documentation/devicetree/bindings/clock/armada3700-xtal-clock.txt
|
|
|
|
|
|
Example:
|
|
pinctrl_sb: pinctrl-sb@18800 {
|
|
compatible = "marvell,armada3710-sb-pinctrl", "syscon", "simple-mfd";
|
|
reg = <0x18800 0x100>, <0x18C00 0x20>;
|
|
gpio {
|
|
#gpio-cells = <2>;
|
|
gpio-ranges = <&pinctrl_sb 0 0 29>;
|
|
gpio-controller;
|
|
interrupts =
|
|
<GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
|
|
<GIC_SPI 159 IRQ_TYPE_LEVEL_HIGH>,
|
|
<GIC_SPI 158 IRQ_TYPE_LEVEL_HIGH>,
|
|
<GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,
|
|
<GIC_SPI 156 IRQ_TYPE_LEVEL_HIGH>;
|
|
};
|
|
|
|
rgmii_pins: mii-pins {
|
|
groups = "rgmii";
|
|
function = "mii";
|
|
};
|
|
|
|
};
|