[PATCH v2 0/3] syscon: Alter syscon and reboot drivers

Serge Semin
2020-05-07T23:39:01Z

This is a small patchset about tuning the syscon infrastructure a bit.
As it's going to be general in the framework of the Baikal-T1 SoC support
integration into the kernel, we suggest to replace the legacy text-based
syscon-reboot-mode dts-bindings file with yaml-based one. Then seeing a
syscon reboot block is normally expected to be a part of a system
controller and based on the discussion
https://lore.kernel.org/linux-pm/20200306130402.1F4F0803079F@mail.baikalelectronics.ru/
we decided to alter the syscon reboot driver so one would also try to fetch
the syscon registers map from a parental DT node. regmap property is left
supported although it's marked as deprecated from now.

This patchset is rebased and tested on the mainline Linux kernel 5.7-rc4:
0e698dfa2822 ("Linux 5.7-rc4")
tag: v5.7-rc4

Changelog v2:
- Add Sebastian' Acked-by tag to patch 1.
- Use a shorter summary describing the bindings modification patches.
- Our corporate email server doesn't change Message-Id anymore, so the patchset
is resubmitted being in the cover-letter-threaded format.
- Discard patch with syscon "-endian" property support. As Rob said It shall be
in the common dt-schema.
- Replace patches of adding a regmap property support to the syscon-reboot-mode
with patches making syscon-reboot a sub-node of a system controller node.
- Mark regmap property as deprecated from now.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Maxim Kaurkin <Maxim.Kaurkin@baikalelectronics.ru>
Cc: Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>
Cc: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>
Cc: Ekaterina Skachko <Ekaterina.Skachko@baikalelectronics.ru>
Cc: Vadim Vlasov <V.Vlasov@baikalelectronics.ru>
Cc: Alexey Kolotnikov <Alexey.Kolotnikov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Allison Randal <allison@lohutok.net>
Cc: Richard Fontana <rfontana@redhat.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

Serge Semin (3):
dt-bindings: power: reset: Convert syscon-reboot-mode to DT schema
dt-bindings: power: reset: Unrequire regmap property in syscon-reboot
node
power: reset: syscon-reboot: Add parental syscon support

.../power/reset/syscon-reboot-mode.txt | 35 ------------
.../power/reset/syscon-reboot-mode.yaml | 55 +++++++++++++++++++
.../bindings/power/reset/syscon-reboot.yaml | 15 +++--
drivers/power/reset/syscon-reboot.c | 7 ++-
4 files changed, 70 insertions(+), 42 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt
create mode 100644 Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.yaml

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2.25.1