linux-kernel - [PATCH v4 0/4] firmware: ti_sci: Introduce BOARDCFG

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Message-Id: <20260204-ti-sci-jacinto-s2r-restore-irq-v4-0-67820af39eac@bootlin.com>
Date: Wed, 04 Feb 2026 16:03:37 +0100
From: "Thomas Richard (TI)" <thomas.richard@...tlin.com>
To: Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>, 
 Santosh Shilimkar <ssantosh@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>
Cc: Gregory CLEMENT <gregory.clement@...tlin.com>, 
 richard.genoud@...tlin.com, Udit Kumar <u-kumar1@...com>, 
 Prasanth Mantena <p-mantena@...com>, Abhash Kumar <a-kumar2@...com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-clk@...r.kernel.org, 
 "Thomas Richard (TI)" <thomas.richard@...tlin.com>
Subject: [PATCH v4 0/4] firmware: ti_sci: Introduce BOARDCFG_MANAGED mode
 for Jacinto family

The fourth iteration of this series adds support for two new firmware
capabilities:
- MSG_FLAG_CAPS_LPM_IRQ_CONTEXT_LOST: Indicates that DM-Firmware is not
  able to restore IRQ context during resume after suspend-to-ram.
- MSG_FLAG_CAPS_LPM_CLK_CONTEXT_LOST: Indicates that DM-Firmware is not
  able to restore clock context (rate and parent configuration) during
  resume after suspend-to-ram.

Now, ti_sci driver determines whether to restore IRQs based on the
MSG_FLAG_CAPS_LPM_IRQ_CONTEXT_LOST capability rather than the
BOARDCFG_MANAGED mode. The same logic applies to the clock context.

Both J784s4 and J7200 platforms support these new capabilities. A
corresponding pull request has been submitted on DM-Firmware side to
define and enable these capabilities.

The value for the BOARDCFG_MANAGED mode has also been fixed.

Public documentation for BOARDCFG_MANAGED mode and these new capabilities
is currently unavailable. I will update the series with relevant
documentation references as soon as they become available.

I rebased the series on linux-next next-20260202.

Best Regards,
Thomas

Signed-off-by: Thomas Richard (TI) <thomas.richard@...tlin.com>
---
Changes in v4:
- rebase on linux-next next-20260202.
- fix BOARDCFG_MANAGED value.
- add MSG_FLAG_CAPS_LPM_IRQ_CONTEXT_LOST firmware capability.
- add MSG_FLAG_CAPS_LPM_CLK_CONTEXT_LOST firmware capability.
- Link to v3: https://lore.kernel.org/r/20251205-ti-sci-jacinto-s2r-restore-irq-v3-0-d06963974ad4@bootlin.com

Changes in v3:
- rebased on linux-next
- sci-clk: context_restore() operation restores also rate.
- Link to v2: https://lore.kernel.org/r/20251127-ti-sci-jacinto-s2r-restore-irq-v2-0-a487fa3ff221@bootlin.com

Changes in v2:
- ti_sci: use hlist to store IRQs.
- sci-clk: add context_restore operation
- ti_sci: restore clock parents during resume
- Link to v1: https://lore.kernel.org/r/20251017-ti-sci-jacinto-s2r-restore-irq-v1-0-34d4339d247a@bootlin.com

---
Thomas Richard (TI) (4):
      firmware: ti_sci: add BOARDCFG_MANAGED mode support
      firmware: ti_sci: add support for restoring IRQs during resume
      clk: keystone: sci-clk: add restore_context() operation
      firmware: ti_sci: add support for restoring clock context during resume

 drivers/clk/keystone/sci-clk.c |  42 +++++++++--
 drivers/firmware/ti_sci.c      | 164 ++++++++++++++++++++++++++++++++++++++---
 drivers/firmware/ti_sci.h      |   6 ++
 3 files changed, 192 insertions(+), 20 deletions(-)
---
base-commit: c6fb8985458d675f32a22788f30afcba754b6d78
change-id: 20251010-ti-sci-jacinto-s2r-restore-irq-428e008fd10c

Best regards,
-- 
Thomas Richard (TI) <thomas.richard@...tlin.com>