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 <[email protected]> --- 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@0 { + compatible = "arm,smc-mbox"; + #mbox-cells = <1>; + arm,smc-func-ids = <0x82000001>; + }; + + sram: sram@10000{ + compatible = "mmio-sram"; + reg = <0x10000 0x8000>; + + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x10000 0x8000>; + + cpu_scp_mem: scp-shmem@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 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
