Thread (24 messages) 24 messages, 7 authors, 2018-03-15

Re: [PATCH v5 1/4] dt-bindings: firmware: Add bindings for ZynqMP firmware

From: Sudeep Holla <hidden>
Date: 2018-03-08 11:48:09
Also in: linux-arm-kernel, lkml


On 07/03/18 22:25, Jolly Shah wrote:
Hi Sudeep,
[...]
quoted
quoted
+Examples:
+	firmware {
+		zynqmp_firmware: zynqmp-firmware {
+			compatible = "xlnx,zynqmp-firmware";
+			method = "smc";
+		};
+	};
Do you foresee using SMC/HVC for this firmware even on future platforms?
If not, I suggest to keep the protocol part separate from the transport i.e.
smc/hvc via ATF. It could be replaced with mailbox or some h/w mechanism in
future ?
We have PSCI and EEMI interfaces exposed to linux from ATF. PSCI is
an EEMI client. We do not have current plans to switch to mailbox as it
will require 2 communication channels to PMU as PSCI is through ATF.
OK, but I just saw some bindings that has mailbox interface, honestly
it's getting too confusing with multiple series on the same thing
floating and hence I requested to put it together as one series.
-- 
Regards,
Sudeep
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