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author | Sascha Hauer <s.hauer@pengutronix.de> | 2014-04-25 11:22:32 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-04-28 09:08:46 +0200 |
commit | 00ce25c6dcdae5582ae4be37147ab33678adc995 (patch) | |
tree | 41c93102ae304a61738c31353e3cb5336ef0b297 /dts/Bindings/net/can | |
parent | 0af79fbb6779921d3f1962773adb7fb57d3c89d4 (diff) | |
download | barebox-00ce25c6dcdae5582ae4be37147ab33678adc995.tar.gz barebox-00ce25c6dcdae5582ae4be37147ab33678adc995.tar.xz |
Add devicetree source files as of Linux-3.15-rc2
This adds the Linux dts files to barebox. The dts files are
generated from Ian Campbells device-tree-rebasing.git:
git://xenbits.xen.org/people/ianc/device-tree-rebasing.git
The dts are found in dts/ in the barebox repository and
will be updated from upstream regularly, probably for each upstream
-rc.
To keep the synchronization with upstream easy no changes to
the original files are allowed under dts/. Instead changes to
upstream dts files will be done using overlays in arch/$ARCH/dts/.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/net/can')
-rw-r--r-- | dts/Bindings/net/can/atmel-can.txt | 14 | ||||
-rw-r--r-- | dts/Bindings/net/can/c_can.txt | 49 | ||||
-rw-r--r-- | dts/Bindings/net/can/cc770.txt | 53 | ||||
-rw-r--r-- | dts/Bindings/net/can/fsl-flexcan.txt | 29 | ||||
-rw-r--r-- | dts/Bindings/net/can/grcan.txt | 28 | ||||
-rw-r--r-- | dts/Bindings/net/can/microchip,mcp251x.txt | 25 | ||||
-rw-r--r-- | dts/Bindings/net/can/mpc5xxx-mscan.txt | 53 | ||||
-rw-r--r-- | dts/Bindings/net/can/sja1000.txt | 57 |
8 files changed, 308 insertions, 0 deletions
diff --git a/dts/Bindings/net/can/atmel-can.txt b/dts/Bindings/net/can/atmel-can.txt new file mode 100644 index 0000000000..14e52a0d86 --- /dev/null +++ b/dts/Bindings/net/can/atmel-can.txt @@ -0,0 +1,14 @@ +* AT91 CAN * + +Required properties: + - compatible: Should be "atmel,at91sam9263-can" or "atmel,at91sam9x5-can" + - reg: Should contain CAN controller registers location and length + - interrupts: Should contain IRQ line for the CAN controller + +Example: + + can0: can@f000c000 { + compatible = "atmel,at91sam9x5-can"; + reg = <0xf000c000 0x300>; + interrupts = <40 4 5> + }; diff --git a/dts/Bindings/net/can/c_can.txt b/dts/Bindings/net/can/c_can.txt new file mode 100644 index 0000000000..8f1ae81228 --- /dev/null +++ b/dts/Bindings/net/can/c_can.txt @@ -0,0 +1,49 @@ +Bosch C_CAN/D_CAN controller Device Tree Bindings +------------------------------------------------- + +Required properties: +- compatible : Should be "bosch,c_can" for C_CAN controllers and + "bosch,d_can" for D_CAN controllers. +- reg : physical base address and size of the C_CAN/D_CAN + registers map +- interrupts : property with a value describing the interrupt + number + +Optional properties: +- ti,hwmods : Must be "d_can<n>" or "c_can<n>", n being the + instance number + +Note: "ti,hwmods" field is used to fetch the base address and irq +resources from TI, omap hwmod data base during device registration. +Future plan is to migrate hwmod data base contents into device tree +blob so that, all the required data will be used from device tree dts +file. + +Example: + +Step1: SoC common .dtsi file + + dcan1: d_can@481d0000 { + compatible = "bosch,d_can"; + reg = <0x481d0000 0x2000>; + interrupts = <55>; + interrupt-parent = <&intc>; + status = "disabled"; + }; + +(or) + + dcan1: d_can@481d0000 { + compatible = "bosch,d_can"; + ti,hwmods = "d_can1"; + reg = <0x481d0000 0x2000>; + interrupts = <55>; + interrupt-parent = <&intc>; + status = "disabled"; + }; + +Step 2: board specific .dts file + + &dcan1 { + status = "okay"; + }; diff --git a/dts/Bindings/net/can/cc770.txt b/dts/Bindings/net/can/cc770.txt new file mode 100644 index 0000000000..77027bf646 --- /dev/null +++ b/dts/Bindings/net/can/cc770.txt @@ -0,0 +1,53 @@ +Memory mapped Bosch CC770 and Intel AN82527 CAN controller + +Note: The CC770 is a CAN controller from Bosch, which is 100% +compatible with the old AN82527 from Intel, but with "bugs" being fixed. + +Required properties: + +- compatible : should be "bosch,cc770" for the CC770 and "intc,82527" + for the AN82527. + +- reg : should specify the chip select, address offset and size required + to map the registers of the controller. The size is usually 0x80. + +- interrupts : property with a value describing the interrupt source + (number and sensitivity) required for the controller. + +Optional properties: + +- bosch,external-clock-frequency : frequency of the external oscillator + clock in Hz. Note that the internal clock frequency used by the + controller is half of that value. If not specified, a default + value of 16000000 (16 MHz) is used. + +- bosch,clock-out-frequency : slock frequency in Hz on the CLKOUT pin. + If not specified or if the specified value is 0, the CLKOUT pin + will be disabled. + +- bosch,slew-rate : slew rate of the CLKOUT signal. If not specified, + a resonable value will be calculated. + +- bosch,disconnect-rx0-input : see data sheet. + +- bosch,disconnect-rx1-input : see data sheet. + +- bosch,disconnect-tx1-output : see data sheet. + +- bosch,polarity-dominant : see data sheet. + +- bosch,divide-memory-clock : see data sheet. + +- bosch,iso-low-speed-mux : see data sheet. + +For further information, please have a look to the CC770 or AN82527. + +Examples: + +can@3,100 { + compatible = "bosch,cc770"; + reg = <3 0x100 0x80>; + interrupts = <2 0>; + interrupt-parent = <&mpic>; + bosch,external-clock-frequency = <16000000>; +}; diff --git a/dts/Bindings/net/can/fsl-flexcan.txt b/dts/Bindings/net/can/fsl-flexcan.txt new file mode 100644 index 0000000000..56d6cc336e --- /dev/null +++ b/dts/Bindings/net/can/fsl-flexcan.txt @@ -0,0 +1,29 @@ +Flexcan CAN controller on Freescale's ARM and PowerPC system-on-a-chip (SOC). + +Required properties: + +- compatible : Should be "fsl,<processor>-flexcan" + + An implementation should also claim any of the following compatibles + that it is fully backwards compatible with: + + - fsl,p1010-flexcan + +- reg : Offset and length of the register set for this device +- interrupts : Interrupt tuple for this device + +Optional properties: + +- clock-frequency : The oscillator frequency driving the flexcan device + +- xceiver-supply: Regulator that powers the CAN transceiver + +Example: + + can@1c000 { + compatible = "fsl,p1010-flexcan"; + reg = <0x1c000 0x1000>; + interrupts = <48 0x2>; + interrupt-parent = <&mpic>; + clock-frequency = <200000000>; // filled in by bootloader + }; diff --git a/dts/Bindings/net/can/grcan.txt b/dts/Bindings/net/can/grcan.txt new file mode 100644 index 0000000000..34ef3498f8 --- /dev/null +++ b/dts/Bindings/net/can/grcan.txt @@ -0,0 +1,28 @@ +Aeroflex Gaisler GRCAN and GRHCAN CAN controllers. + +The GRCAN and CRHCAN CAN controllers are available in the GRLIB VHDL IP core +library. + +Note: These properties are built from the AMBA plug&play in a Leon SPARC system +(the ordinary environment for GRCAN and GRHCAN). There are no dts files for +sparc. + +Required properties: + +- name : Should be "GAISLER_GRCAN", "01_03d", "GAISLER_GRHCAN" or "01_034" + +- reg : Address and length of the register set for the device + +- freq : Frequency of the external oscillator clock in Hz (the frequency of + the amba bus in the ordinary case) + +- interrupts : Interrupt number for this device + +Optional properties: + +- systemid : If not present or if the value of the least significant 16 bits + of this 32-bit property is smaller than GRCAN_TXBUG_SAFE_GRLIB_VERSION + a bug workaround is activated. + +For further information look in the documentation for the GLIB IP core library: +http://www.gaisler.com/products/grlib/grip.pdf diff --git a/dts/Bindings/net/can/microchip,mcp251x.txt b/dts/Bindings/net/can/microchip,mcp251x.txt new file mode 100644 index 0000000000..ee3723beb7 --- /dev/null +++ b/dts/Bindings/net/can/microchip,mcp251x.txt @@ -0,0 +1,25 @@ +* Microchip MCP251X stand-alone CAN controller device tree bindings + +Required properties: + - compatible: Should be one of the following: + - "microchip,mcp2510" for MCP2510. + - "microchip,mcp2515" for MCP2515. + - reg: SPI chip select. + - clocks: The clock feeding the CAN controller. + - interrupt-parent: The parent interrupt controller. + - interrupts: Should contain IRQ line for the CAN controller. + +Optional properties: + - vdd-supply: Regulator that powers the CAN controller. + - xceiver-supply: Regulator that powers the CAN transceiver. + +Example: + can0: can@1 { + compatible = "microchip,mcp2515"; + reg = <1>; + clocks = <&clk24m>; + interrupt-parent = <&gpio4>; + interrupts = <13 0x2>; + vdd-supply = <®5v0>; + xceiver-supply = <®5v0>; + }; diff --git a/dts/Bindings/net/can/mpc5xxx-mscan.txt b/dts/Bindings/net/can/mpc5xxx-mscan.txt new file mode 100644 index 0000000000..2fa4fcd38f --- /dev/null +++ b/dts/Bindings/net/can/mpc5xxx-mscan.txt @@ -0,0 +1,53 @@ +CAN Device Tree Bindings +------------------------ + +(c) 2006-2009 Secret Lab Technologies Ltd +Grant Likely <grant.likely@secretlab.ca> + +fsl,mpc5200-mscan nodes +----------------------- +In addition to the required compatible-, reg- and interrupt-properties, you can +also specify which clock source shall be used for the controller: + +- fsl,mscan-clock-source : a string describing the clock source. Valid values + are: "ip" for ip bus clock + "ref" for reference clock (XTAL) + "ref" is default in case this property is not + present. + +fsl,mpc5121-mscan nodes +----------------------- +In addition to the required compatible-, reg- and interrupt-properties, you can +also specify which clock source and divider shall be used for the controller: + +- fsl,mscan-clock-source : a string describing the clock source. Valid values + are: "ip" for ip bus clock + "ref" for reference clock + "sys" for system clock + If this property is not present, an optimal CAN + clock source and frequency based on the system + clock will be selected. If this is not possible, + the reference clock will be used. + +- fsl,mscan-clock-divider: for the reference and system clock, an additional + clock divider can be specified. By default, a + value of 1 is used. + +Note that the MPC5121 Rev. 1 processor is not supported. + +Examples: + can@1300 { + compatible = "fsl,mpc5121-mscan"; + interrupts = <12 0x8>; + interrupt-parent = <&ipic>; + reg = <0x1300 0x80>; + }; + + can@1380 { + compatible = "fsl,mpc5121-mscan"; + interrupts = <13 0x8>; + interrupt-parent = <&ipic>; + reg = <0x1380 0x80>; + fsl,mscan-clock-source = "ref"; + fsl,mscan-clock-divider = <3>; + }; diff --git a/dts/Bindings/net/can/sja1000.txt b/dts/Bindings/net/can/sja1000.txt new file mode 100644 index 0000000000..b4a6d53fb0 --- /dev/null +++ b/dts/Bindings/net/can/sja1000.txt @@ -0,0 +1,57 @@ +Memory mapped SJA1000 CAN controller from NXP (formerly Philips) + +Required properties: + +- compatible : should be "nxp,sja1000". + +- reg : should specify the chip select, address offset and size required + to map the registers of the SJA1000. The size is usually 0x80. + +- interrupts: property with a value describing the interrupt source + (number and sensitivity) required for the SJA1000. + +Optional properties: + +- reg-io-width : Specify the size (in bytes) of the IO accesses that + should be performed on the device. Valid value is 1, 2 or 4. + Default to 1 (8 bits). + +- nxp,external-clock-frequency : Frequency of the external oscillator + clock in Hz. Note that the internal clock frequency used by the + SJA1000 is half of that value. If not specified, a default value + of 16000000 (16 MHz) is used. + +- nxp,tx-output-mode : operation mode of the TX output control logic: + <0x0> : bi-phase output mode + <0x1> : normal output mode (default) + <0x2> : test output mode + <0x3> : clock output mode + +- nxp,tx-output-config : TX output pin configuration: + <0x01> : TX0 invert + <0x02> : TX0 pull-down (default) + <0x04> : TX0 pull-up + <0x06> : TX0 push-pull + <0x08> : TX1 invert + <0x10> : TX1 pull-down + <0x20> : TX1 pull-up + <0x30> : TX1 push-pull + +- nxp,clock-out-frequency : clock frequency in Hz on the CLKOUT pin. + If not specified or if the specified value is 0, the CLKOUT pin + will be disabled. + +- nxp,no-comparator-bypass : Allows to disable the CAN input comparator. + +For further information, please have a look to the SJA1000 data sheet. + +Examples: + +can@3,100 { + compatible = "nxp,sja1000"; + reg = <3 0x100 0x80>; + interrupts = <2 0>; + interrupt-parent = <&mpic>; + nxp,external-clock-frequency = <16000000>; +}; + |