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author | Sascha Hauer <s.hauer@pengutronix.de> | 2017-10-06 06:12:41 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-10-06 06:12:41 +0200 |
commit | ebde8820a04dd73a09f50ba84b8cf8ec3773d6ba (patch) | |
tree | 031d15dcd26f5b737adddc5042a3ddabbb6051f7 /dts/Bindings/sram/renesas,smp-sram.txt | |
parent | 15af9fc8cc9e18409893d2375271d64cac76924a (diff) | |
download | barebox-ebde8820a04dd73a09f50ba84b8cf8ec3773d6ba.tar.gz barebox-ebde8820a04dd73a09f50ba84b8cf8ec3773d6ba.tar.xz |
dts: update to v4.14-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/sram/renesas,smp-sram.txt')
-rw-r--r-- | dts/Bindings/sram/renesas,smp-sram.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/dts/Bindings/sram/renesas,smp-sram.txt b/dts/Bindings/sram/renesas,smp-sram.txt new file mode 100644 index 0000000000..712d05e3e1 --- /dev/null +++ b/dts/Bindings/sram/renesas,smp-sram.txt @@ -0,0 +1,27 @@ +* Renesas SMP SRAM + +Renesas R-Car Gen2 and RZ/G1 SoCs need a small piece of SRAM for the jump stub +for secondary CPU bringup and CPU hotplug. +This memory is reserved by adding a child node to a "mmio-sram" node, cfr. +Documentation/devicetree/bindings/sram/sram.txt. + +Required child node properties: + - compatible: Must be "renesas,smp-sram", + - reg: Address and length of the reserved SRAM. + The full physical (bus) address must be aligned to a 256 KiB boundary. + + +Example: + + icram1: sram@e63c0000 { + compatible = "mmio-sram"; + reg = <0 0xe63c0000 0 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0 0xe63c0000 0x1000>; + + smp-sram@0 { + compatible = "renesas,smp-sram"; + reg = <0 0x10>; + }; + }; |