[PATCH 4/8] arm64: dts: allwinner: a64: add SCPI support
From: andre.przywara@arm.com (Andre Przywara)
Date: 2017-06-30 10:01:42
Also in:
linux-devicetree, lkml
Subsystem:
arm/allwinner sunxi soc support, the rest · Maintainers:
Chen-Yu Tsai, Jernej Skrabec, Samuel Holland, Linus Torvalds
This adds support for the SCPI protocol using an SMC mailbox and some shared memory in SRAM. The SCPI provider is implemented in the ARM Trusted Firmware layer (running in EL3 on the application processor cores), triggered by an smc call. Signed-off-by: Andre Przywara <andre.przywara@arm.com> --- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 9d00622..ef6f10e 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi@@ -124,6 +124,32 @@ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>; }; + mailbox: mbox at 0 { + compatible = "arm,smc-mbox"; + #mbox-cells = <1>; + arm,smc-func-ids = <0x82000001>; + }; + + sram: sram at 10000{ + compatible = "mmio-sram"; + reg = <0x10000 0x8000>; + + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x10000 0x8000>; + + cpu_scp_mem: scp-shmem at 7e00 { + compatible = "mmio-sram"; + reg = <0x7e00 0x200>; + }; + }; + + scpi { + compatible = "arm,scpi"; + mboxes = <&mailbox 0>; + shmem = <&cpu_scp_mem>; + }; + soc { compatible = "simple-bus"; #address-cells = <1>;
--
2.9.0