Loading...
Broadcom BCM63138 DSL System-on-a-Chip device tree bindings ----------------------------------------------------------- Boards compatible with the BCM63138 DSL System-on-a-Chip should have the following properties: Required root node property: compatible: should be "brcm,bcm63138" An optional Boot lookup table Device Tree node is required for secondary CPU initialization as well as a 'resets' phandle to the correct PMB controller as defined in reset/brcm,bcm63138-pmb.txt for this secondary CPU, and an 'enable-method' property. Required properties for the Boot lookup table node: - compatible: should be "brcm,bcm63138-bootlut" - reg: register base address and length for the Boot Lookup table Optional properties for the primary CPU node: - enable-method: should be "brcm,bcm63138" Optional properties for the secondary CPU node: - enable-method: should be "brcm,bcm63138" - resets: phandle to the relevant PMB controller, one integer indicating the internal bus number, and a second integer indicating the address of the CPU in the PMB internal bus number. Example: cpus { cpu@0 { compatible = "arm,cortex-a9"; reg = <0>; ... enable-method = "brcm,bcm63138"; }; cpu@1 { compatible = "arm,cortex-a9"; reg = <1>; ... enable-method = "brcm,bcm63138"; resets = <&pmb0 4 1>; }; }; bootlut: bootlut@8000 { compatible = "brcm,bcm63138-bootlut"; reg = <0x8000 0x50>; }; ======= reboot ------ Two nodes are required for software reboot: a timer node and a syscon-reboot node. Timer node: - compatible: Must be "brcm,bcm6328-timer", "syscon" - reg: Register base address and length Syscon reboot node: See Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml for the detailed list of properties, the two values defined below are specific to the BCM6328-style timer: - offset: Should be 0x34 to denote the offset of the TIMER_WD_TIMER_RESET register from the beginning of the TIMER block - mask: Should be 1 for the SoftRst bit. Example: timer: timer@80 { compatible = "brcm,bcm6328-timer", "syscon"; reg = <0x80 0x3c>; }; reboot { compatible = "syscon-reboot"; regmap = <&timer>; offset = <0x34>; mask = <0x1>; }; |