Initial commit; kernel source import

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Nathan
2025-04-06 23:50:55 -05:00
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EEPROMs (SPI) compatible with Atmel at25.
Required properties:
- compatible : "atmel,at25".
- reg : chip select number
- spi-max-frequency : max spi frequency to use
- pagesize : size of the eeprom page
- size : total eeprom size in bytes
- address-width : number of address bits (one of 8, 16, or 24)
Optional properties:
- spi-cpha : SPI shifted clock phase, as per spi-bus bindings.
- spi-cpol : SPI inverse clock polarity, as per spi-bus bindings.
- read-only : this parameter-less property disables writes to the eeprom
Obsolete legacy properties are can be used in place of "size", "pagesize",
"address-width", and "read-only":
- at25,byte-len : total eeprom size in bytes
- at25,addr-mode : addr-mode flags, as defined in include/linux/spi/eeprom.h
- at25,page-size : size of the eeprom page
Additional compatible properties are also allowed.
Example:
at25@0 {
compatible = "atmel,at25", "st,m95256";
reg = <0>
spi-max-frequency = <5000000>;
spi-cpha;
spi-cpol;
pagesize = <64>;
size = <32768>;
address-width = <16>;
};

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* Atmel SSC driver.
Required properties:
- compatible: "atmel,at91rm9200-ssc" or "atmel,at91sam9g45-ssc"
- atmel,at91rm9200-ssc: support pdc transfer
- atmel,at91sam9g45-ssc: support dma transfer
- reg: Should contain SSC registers location and length
- interrupts: Should contain SSC interrupt
Example:
ssc0: ssc@fffbc000 {
compatible = "atmel,at91rm9200-ssc";
reg = <0xfffbc000 0x4000>;
interrupts = <14 4 5>;
};

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BMP085/BMP18x digital pressure sensors
Required properties:
- compatible: bosch,bmp085
Optional properties:
- chip-id: configurable chip id for non-default chip revisions
- temp-measurement-period: temperature measurement period (milliseconds)
- default-oversampling: default oversampling value to be used at startup,
value range is 0-3 with rising sensitivity.
Example:
pressure@77 {
compatible = "bosch,bmp085";
reg = <0x77>;
chip-id = <10>;
temp-measurement-period = <100>;
default-oversampling = <2>;
};

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IFM camera sensor interface on mpc5200 LocalPlus bus
Required properties:
- compatible: "ifm,o2d-csi"
- reg: specifies sensor chip select number and associated address range
- interrupts: external interrupt line number and interrupt sense mode
of the interrupt line signaling frame valid events
- gpios: three gpio-specifiers for "capture", "reset" and "master enable"
GPIOs (strictly in this order).
- ifm,csi-clk-handle: the phandle to a node in the DT describing the sensor
clock generator. This node is usually a general purpose timer controller.
- ifm,csi-addr-bus-width: address bus width (valid values are 16, 24, 25)
- ifm,csi-data-bus-width: data bus width (valid values are 8 and 16)
- ifm,csi-wait-cycles: sensor bus wait cycles
Optional properties:
- ifm,csi-byte-swap: if this property is present, the byte swapping on
the bus will be enabled.
Example:
csi@3,0 {
compatible = "ifm,o2d-csi";
reg = <3 0 0x00100000>; /* CS 3, 1 MiB range */
interrupts = <1 1 2>; /* IRQ1, edge falling */
ifm,csi-clk-handle = <&timer7>;
gpios = <&gpio_simple 23 0 /* image_capture */
&gpio_simple 26 0 /* image_reset */
&gpio_simple 29 0>; /* image_master_en */
ifm,csi-addr-bus-width = <24>;
ifm,csi-data-bus-width = <8>;
ifm,csi-wait-cycles = <0>;
};
The base address of the used chip select is specified in the
ranges property of the parent localbus node, for example:
ranges = <0 0 0xff000000 0x01000000
3 0 0xe3000000 0x00100000>;

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LIS302 accelerometer devicetree bindings
This device is matched via its bus drivers, and has a number of properties
that apply in on the generic device (independent from the bus).
Required properties for the SPI bindings:
- compatible: should be set to "st,lis3lv02d_spi"
- reg: the chipselect index
- spi-max-frequency: maximal bus speed, should be set to 1000000 unless
constrained by external circuitry
- interrupts: the interrupt generated by the device
Required properties for the I2C bindings:
- compatible: should be set to "st,lis3lv02d"
- reg: i2c slave address
- Vdd-supply: The input supply for Vdd
- Vdd_IO-supply: The input supply for Vdd_IO
Optional properties for all bus drivers:
- st,click-single-{x,y,z}: if present, tells the device to issue an
interrupt on single click events on the
x/y/z axis.
- st,click-double-{x,y,z}: if present, tells the device to issue an
interrupt on double click events on the
x/y/z axis.
- st,click-thresh-{x,y,z}: set the x/y/z axis threshold
- st,click-click-time-limit: click time limit, from 0 to 127.5msec
with step of 0.5 msec
- st,click-latency: click latency, from 0 to 255 msec with
step of 1 msec.
- st,click-window: click window, from 0 to 255 msec with
step of 1 msec.
- st,irq{1,2}-disable: disable IRQ 1/2
- st,irq{1,2}-ff-wu-1: raise IRQ 1/2 on FF_WU_1 condition
- st,irq{1,2}-ff-wu-2: raise IRQ 1/2 on FF_WU_2 condition
- st,irq{1,2}-data-ready: raise IRQ 1/2 on data ready contition
- st,irq{1,2}-click: raise IRQ 1/2 on click condition
- st,irq-open-drain: consider IRQ lines open-drain
- st,irq-active-low: make IRQ lines active low
- st,wu-duration-1: duration register for Free-Fall/Wake-Up
interrupt 1
- st,wu-duration-2: duration register for Free-Fall/Wake-Up
interrupt 2
- st,wakeup-{x,y,z}-{lo,hi}: set wakeup condition on x/y/z axis for
upper/lower limit
- st,highpass-cutoff-hz=: 1, 2, 4 or 8 for 1Hz, 2Hz, 4Hz or 8Hz of
highpass cut-off frequency
- st,hipass{1,2}-disable: disable highpass 1/2.
- st,default-rate=: set the default rate
- st,axis-{x,y,z}=: set the axis to map to the three coordinates
- st,{min,max}-limit-{x,y,z} set the min/max limits for x/y/z axis
(used by self-test)
Example for a SPI device node:
lis302@0 {
compatible = "st,lis302dl-spi";
reg = <0>;
spi-max-frequency = <1000000>;
interrupt-parent = <&gpio>;
interrupts = <104 0>;
st,click-single-x;
st,click-single-y;
st,click-single-z;
st,click-thresh-x = <10>;
st,click-thresh-y = <10>;
st,click-thresh-z = <10>;
st,irq1-click;
st,irq2-click;
st,wakeup-x-lo;
st,wakeup-x-hi;
st,wakeup-y-lo;
st,wakeup-y-hi;
st,wakeup-z-lo;
st,wakeup-z-hi;
};
Example for a I2C device node:
lis331dlh: lis331dlh@18 {
compatible = "st,lis331dlh", "st,lis3lv02d";
reg = <0x18>;
Vdd-supply = <&lis3_reg>;
Vdd_IO-supply = <&lis3_reg>;
st,click-single-x;
st,click-single-y;
st,click-single-z;
st,click-thresh-x = <10>;
st,click-thresh-y = <10>;
st,click-thresh-z = <10>;
st,irq1-click;
st,irq2-click;
st,wakeup-x-lo;
st,wakeup-x-hi;
st,wakeup-y-lo;
st,wakeup-y-hi;
st,wakeup-z-lo;
st,wakeup-z-hi;
st,min-limit-x = <120>;
st,min-limit-y = <120>;
st,min-limit-z = <140>;
st,max-limit-x = <550>;
st,max-limit-y = <550>;
st,max-limit-z = <750>;
};

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Broadcom Secure Monitor Bounce buffer
-----------------------------------------------------
This binding defines the location of the bounce buffer
used for non-secure to secure communications.
Required properties:
- compatible : "bcm,kona-smc"
- reg : Location and size of bounce buffer
Example:
smc@0x3404c000 {
compatible = "bcm,bcm11351-smc", "bcm,kona-smc";
reg = <0x3404c000 0x400>; //1 KiB in SRAM
};

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Generic on-chip SRAM
Simple IO memory regions to be managed by the genalloc API.
Required properties:
- compatible : mmio-sram
- reg : SRAM iomem address range
Example:
sram: sram@5c000000 {
compatible = "mmio-sram";
reg = <0x5c000000 0x40000>; /* 256 KiB SRAM at address 0x5c000000 */
};