linux-kernel - [PATCH V4 0/4] firmware: arm

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Message-ID: <20241023102148.1698910-1-quic_sibis@quicinc.com>
Date: Wed, 23 Oct 2024 15:51:44 +0530
From: Sibi Sankar <quic_sibis@...cinc.com>
To: <sudeep.holla@....com>, <cristian.marussi@....com>,
        <ulf.hansson@...aro.org>, <jassisinghbrar@...il.com>,
        <dmitry.baryshkov@...aro.org>
CC: <linux-kernel@...r.kernel.org>, <arm-scmi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-arm-msm@...r.kernel.org>, <quic_sibis@...cinc.com>,
        <johan@...nel.org>, <konradybcio@...nel.org>,
        <linux-pm@...r.kernel.org>, <tstrudel@...gle.com>, <rafael@...nel.org>
Subject: [PATCH V4 0/4] firmware: arm_scmi: Misc Fixes

The series addresses the kernel warnings reported by Johan at [1] and are
are required to X1E cpufreq device tree changes [2] to land.

[1] - https://lore.kernel.org/lkml/ZoQjAWse2YxwyRJv@hovoldconsulting.com/
[2] - https://lore.kernel.org/lkml/20240612124056.39230-1-quic_sibis@quicinc.com/

The following warnings remain unadressed:
arm-scmi arm-scmi.0.auto: Failed to add opps_by_lvl at 3417600 for NCC - ret:-16
arm-scmi arm-scmi.0.auto: Failed to add opps_by_lvl at 3417600 for NCC - ret:-16

They indicate that duplicate opps are reported by the SCP firmware and
they are seen during probe. They will get addressed by firmware updates. 

Duplicate levels:
arm-scmi arm-scmi.0.auto: Level 2976000 Power 218062 Latency 30us Ifreq 2976000 Index 10
arm-scmi arm-scmi.0.auto: Level 3206400 Power 264356 Latency 30us Ifreq 3206400 Index 11
arm-scmi arm-scmi.0.auto: Level 3417600 Power 314966 Latency 30us Ifreq 3417600 Index 12
arm-scmi arm-scmi.0.auto: Failed to add opps_by_lvl at 3417600 for NCC - ret:-16
arm-scmi arm-scmi.0.auto: Failed to add opps_by_lvl at 3417600 for NCC - ret:-16
arm-scmi arm-scmi.0.auto: Level 4012800 Power 528848 Latency 30us Ifreq 4012800 Index 15

^^ exist because SCP reports duplicate values for the highest sustainable
freq for perf domains 1 and 2. These are the only freqs that appear as
duplicates and will be fixed with a firmware update. FWIW the warnings
that we are addressing in this series will also get fixed by a firmware
update but they still have to land for devices already out in the wild.

V3:
* Pick up R-b, T-b from the list.
* Pick up the updated patch from Cristian for skipping opps.
* Update device names only when a name collision occurs [Dmitry/Ulf]
* Drop Johan's T-b from "fix debugfs node creation failure"
* Move scmi_protocol_msg_check to the top [Sudeep]

V2:
* Include the fix for do_xfer timeout
* Include the fix debugfs node creation failure
* Include Cristian's fix for skipping opp duplication

V1:
* add missing MSG_SUPPORTS_FASTCHANNEL definition.

Base branch: next-20241023

Cristian Marussi (1):
  firmware: arm_scmi: Skip opp duplicates

Sibi Sankar (3):
  firmware: arm_scmi: Ensure that the message-id supports fastchannel
  pmdomain: core: Fix debugfs node creation failure
  mailbox: qcom-cpucp: Mark the irq with IRQF_NO_SUSPEND flag

 drivers/firmware/arm_scmi/driver.c    | 72 +++++++++++++++------------
 drivers/firmware/arm_scmi/perf.c      | 40 +++++++++++----
 drivers/firmware/arm_scmi/protocols.h |  2 +
 drivers/mailbox/qcom-cpucp-mbox.c     |  2 +-
 drivers/pmdomain/core.c               | 65 ++++++++++++++++++------
 include/linux/pm_domain.h             |  1 +
 6 files changed, 123 insertions(+), 59 deletions(-)

-- 
2.34.1