1 NVIDIA Tegra210 Boot and Power Management Processor (BPMP)
2
3 The Boot and Power Management Processor (BPMP) is a co-processor found
4 in Tegra210 SoC. It is designed to handle the early stages of the boot
5 process as well as to assisting in entering deep low power state
6 (suspend to ram), and also offloading DRAM memory clock scaling on
7 some platforms. The binding document defines the resources that would
8 be used by the BPMP T210 firmware driver, which can create the
9 interprocessor communication (IPC) between the CPU and BPMP.
10
11 Required properties:
12 - compatible
13 Array of strings
14 One of:
15 - "nvidia,tegra210-bpmp"
16 - reg: physical base address and length for HW synchornization primitives
17 1) base address and length to Tegra 'atomics' hardware
18 2) base address and length to Tegra 'semaphore' hardware
19 - interrupts: specifies the interrupt number for receiving messages ("rx")
20 and for triggering messages ("tx")
21
22 Optional properties:
23 - #clock-cells : Should be 1 for platforms where DRAM clock control is
24 offloaded to bpmp.
25
26 Example:
27
28 bpmp@70016000 {
29 compatible = "nvidia,tegra210-bpmp";
30 reg = <0x0 0x70016000 0x0 0x2000
31 0x0 0x60001000 0x0 0x1000>;
32 interrupts = <GIC_SPI 6 IRQ_TYPE_EDGE_RISING>,
33 <GIC_SPI 4 IRQ_TYPE_EDGE_RISING>;
34 interrupt-names = "tx", "rx";
35 };
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