linux-kernel - [PATCH 0/2] Allow parameter in smc/hvc calls

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Message-ID: <20230409181918.29270-1-quic_nkela@quicinc.com>
Date:   Sun, 9 Apr 2023 11:19:16 -0700
From:   Nikunj Kela <quic_nkela@...cinc.com>
To:     <sudeep.holla@....com>
CC:     <cristian.marussi@....com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Nikunj Kela <quic_nkela@...cinc.com>
Subject: [PATCH 0/2] Allow parameter in smc/hvc calls

Currently, smc/hvc calls are made with parameters set
to zeros. We are using multiple scmi instances within
a VM and hypervisor associates a tag with each instance
and expects the tag in smc calls from that instance, while
sharing the same smc-id(func_id) among the instances.

This patch series introduces new optional dtb bindings which
can be used to pass parameters to smc/hvc calls.

Nikunj Kela (2):
  dt-bindings: firmware: arm,scmi: support parameter passing in smc/hvc
  firmware: arm_scmi: Augment SMC/HVC to allow optional parameters

 .../bindings/firmware/arm,scmi.yaml           | 16 +++++
 drivers/firmware/arm_scmi/smc.c               | 66 ++++++++++++++++++-
 2 files changed, 81 insertions(+), 1 deletion(-)

-- 
2.17.1