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authorSascha Hauer <s.hauer@pengutronix.de>2020-05-14 07:10:49 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2020-05-14 07:10:49 +0200
commite4ea8e8bfa7a37fea2d97c3d268206417e196bdf (patch)
tree44e2513021a45b23fdd897ab91e3588101e7e844 /dts/Bindings/arm/bcm/brcm,bcm23550-cpu-method.txt
parent9859cb41d7d737852d3334d33c6d2c2c9bbc75c6 (diff)
parent65aeb63c89e7b4e701ff1b1880818197b162d9e6 (diff)
downloadbarebox-e4ea8e8bfa7a37fea2d97c3d268206417e196bdf.tar.gz
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Merge branch 'for-next/dts'
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-Broadcom Kona Family CPU Enable Method
---------------------------------------
-This binding defines the enable method used for starting secondary
-CPUs in the following Broadcom SoCs:
- BCM23550
-
-The enable method is specified by defining the following required
-properties in the "cpu" device tree node:
- - enable-method = "brcm,bcm23550";
- - secondary-boot-reg = <...>;
-
-The secondary-boot-reg property is a u32 value that specifies the
-physical address of the register used to request the ROM holding pen
-code release a secondary CPU. The value written to the register is
-formed by encoding the target CPU id into the low bits of the
-physical start address it should jump to.
-
-Example:
- cpus {
- #address-cells = <1>;
- #size-cells = <0>;
-
- cpu0: cpu@0 {
- device_type = "cpu";
- compatible = "arm,cortex-a9";
- reg = <0>;
- };
-
- cpu1: cpu@1 {
- device_type = "cpu";
- compatible = "arm,cortex-a9";
- reg = <1>;
- enable-method = "brcm,bcm23550";
- secondary-boot-reg = <0x3500417c>;
- };
- };