Re: [PATCH 1/2] dt-bindings: arm: arm,scmi: add smc/hvc transports
From: Sudeep Holla <hidden>
Date: 2020-02-07 10:56:54
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linux-devicetree, lkml
On Thu, Feb 06, 2020 at 02:59:47PM -0700, Rob Herring wrote:
On Thu, Feb 06, 2020 at 09:01:25PM +0800, peng.fan@nxp.com wrote:quoted
From: Peng Fan <peng.fan@nxp.com> SCMI could use SMC/HVC as tranports, so add into devicetree binding doc. Signed-off-by: Peng Fan <peng.fan@nxp.com> --- Documentation/devicetree/bindings/arm/arm,scmi.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)diff --git a/Documentation/devicetree/bindings/arm/arm,scmi.txt b/Documentation/devicetree/bindings/arm/arm,scmi.txt index f493d69e6194..03cff8b55a93 100644 --- a/Documentation/devicetree/bindings/arm/arm,scmi.txt +++ b/Documentation/devicetree/bindings/arm/arm,scmi.txt@@ -14,7 +14,7 @@ Required properties: The scmi node with the following properties shall be under the /firmware/ node. -- compatible : shall be "arm,scmi" +- compatible : shall be "arm,scmi" or "arm,scmi-smc" - mboxes: List of phandle and mailbox channel specifiers. It should contain exactly one or two mailboxes, one for transmitting messages("tx") and another optional for receiving the notifications("rx") if@@ -25,6 +25,8 @@ The scmi node with the following properties shall be under the /firmware/ node. protocol identifier for a given sub-node. - #size-cells : should be '0' as 'reg' property doesn't have any size associated with it. +- arm,smc-id : SMC id required when using smc transports +- arm,hvc-id : HVC id required when using hvc transportsDon't the SMC ids get standardized?
Unfortunately no. Please don't ask me why ;) as there's no technical reason to not standardize it. I pushed hard for it, but for this particular case the SMC/HVC transport is considered to be outside the SCMI protocol standards as it's transport related. I completely agree it is total non-sense. I will try to convince them showing this discussion as reference but can't guarantee anything. -- Regards, Sudeep _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel