diff options
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/arm/fsl.txt | 19 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/arm/gic.txt | 55 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/tty/serial/msm_serial.txt | 27 |
3 files changed, 101 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/fsl.txt b/Documentation/devicetree/bindings/arm/fsl.txt new file mode 100644 index 0000000..e2401cd --- /dev/null +++ b/Documentation/devicetree/bindings/arm/fsl.txt @@ -0,0 +1,19 @@ +i.MX51 Babbage Board +Required root node properties: + - compatible = "fsl,imx51-babbage", "fsl,imx51"; + +i.MX53 Automotive Reference Design Board +Required root node properties: + - compatible = "fsl,imx53-ard", "fsl,imx53"; + +i.MX53 Evaluation Kit +Required root node properties: + - compatible = "fsl,imx53-evk", "fsl,imx53"; + +i.MX53 Quick Start Board +Required root node properties: + - compatible = "fsl,imx53-qsb", "fsl,imx53"; + +i.MX53 Smart Mobile Reference Design Board +Required root node properties: + - compatible = "fsl,imx53-smd", "fsl,imx53"; diff --git a/Documentation/devicetree/bindings/arm/gic.txt b/Documentation/devicetree/bindings/arm/gic.txt new file mode 100644 index 0000000..52916b4 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/gic.txt @@ -0,0 +1,55 @@ +* ARM Generic Interrupt Controller + +ARM SMP cores are often associated with a GIC, providing per processor +interrupts (PPI), shared processor interrupts (SPI) and software +generated interrupts (SGI). + +Primary GIC is attached directly to the CPU and typically has PPIs and SGIs. +Secondary GICs are cascaded into the upward interrupt controller and do not +have PPIs or SGIs. + +Main node required properties: + +- compatible : should be one of: + "arm,cortex-a9-gic" + "arm,arm11mp-gic" +- interrupt-controller : Identifies the node as an interrupt controller +- #interrupt-cells : Specifies the number of cells needed to encode an + interrupt source. The type shall be a <u32> and the value shall be 3. + + The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI + interrupts. + + The 2nd cell contains the interrupt number for the interrupt type. + SPI interrupts are in the range [0-987]. PPI interrupts are in the + range [0-15]. + + The 3rd cell is the flags, encoded as follows: + bits[3:0] trigger type and level flags. + 1 = low-to-high edge triggered + 2 = high-to-low edge triggered + 4 = active high level-sensitive + 8 = active low level-sensitive + bits[15:8] PPI interrupt cpu mask. Each bit corresponds to each of + the 8 possible cpus attached to the GIC. A bit set to '1' indicated + the interrupt is wired to that CPU. Only valid for PPI interrupts. + +- reg : Specifies base physical address(s) and size of the GIC registers. The + first region is the GIC distributor register base and size. The 2nd region is + the GIC cpu interface register base and size. + +Optional +- interrupts : Interrupt source of the parent interrupt controller. Only + present on secondary GICs. + +Example: + + intc: interrupt-controller@fff11000 { + compatible = "arm,cortex-a9-gic"; + #interrupt-cells = <3>; + #address-cells = <1>; + interrupt-controller; + reg = <0xfff11000 0x1000>, + <0xfff10100 0x100>; + }; + diff --git a/Documentation/devicetree/bindings/tty/serial/msm_serial.txt b/Documentation/devicetree/bindings/tty/serial/msm_serial.txt new file mode 100644 index 0000000..aef383e --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/msm_serial.txt @@ -0,0 +1,27 @@ +* Qualcomm MSM UART + +Required properties: +- compatible : + - "qcom,msm-uart", and one of "qcom,msm-hsuart" or + "qcom,msm-lsuart". +- reg : offset and length of the register set for the device + for the hsuart operating in compatible mode, there should be a + second pair describing the gsbi registers. +- interrupts : should contain the uart interrupt. + +There are two different UART blocks used in MSM devices, +"qcom,msm-hsuart" and "qcom,msm-lsuart". The msm-serial driver is +able to handle both of these, and matches against the "qcom,msm-uart" +as the compatibility. + +The registers for the "qcom,msm-hsuart" device need to specify both +register blocks, even for the common driver. + +Example: + + uart@19c400000 { + compatible = "qcom,msm-hsuart", "qcom,msm-uart"; + reg = <0x19c40000 0x1000>, + <0x19c00000 0x1000>; + interrupts = <195>; + }; |