On Tue, Jun 05, 2018 at 01:26:38AM -0500, Nishanth Menon wrote:
> Texas Instrument's System Control Interface (TISCI) permits the
> ability for Operating Systems to running in virtual machines to be
...for OSs running in virtual...
> able to independently communicate with the firmware without the need
> going through an hypervisor.
>
> The "host-id" in effect is the hardware representation of the
> host (example: VMs locked to a core) as identified to the System
> Controller.
So the hypervisor will fill in host-id's for each VM instance?
>
> This is introduced as an optional parameter to maintain consistency
> with legacy device tree blobs.
>
> We call this with a vendor prefix to prevent any possible confusion
> with SCSI ID (m68k) kernel option.
>
> Signed-off-by: Nishanth Menon <nm@xxxxxx>
> ---
> Documentation/devicetree/bindings/arm/keystone/ti,sci.txt | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/arm/keystone/ti,sci.txt b/Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
> index 31f5f9a104cc..b56a02c10ae6 100644
> --- a/Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
> +++ b/Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
> @@ -45,11 +45,15 @@ Optional Properties:
> debug_messages - Map the Debug message region
> - reg: register space corresponding to the debug_messages
> - ti,system-reboot-controller: If system reboot can be triggered by SoC reboot
> +- ti,host-id: Integer value corresponding to the host ID assigned by Firmware
> + for identification of host processing entities such as virtual
> + machines
>
> Example (K2G):
> -------------
> pmmc: pmmc {
> compatible = "ti,k2g-sci";
> + ti,host-id = <2>;
> mbox-names = "rx", "tx";
> mboxes= <&msgmgr &msgmgr_proxy_pmmc_rx>,
> <&msgmgr &msgmgr_proxy_pmmc_tx>;
> --
> 2.15.1
>
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