[PATCH RESEND v3 0/2] syscon: Alter syscon and reboot drivers

From: Serge Semin
Date: Tue May 26 2020 - 09:51:21 EST

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
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.

Link: https://lore.kernel.org/linux-pm/20200507233846.11548-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/
Changelog v3:
- Discard the commit 6acd3ecd88ff ("dt-bindings: power: reset: Convert
syscon-reboot-mode to DT schema") since it has been merged in by Sebatian.
- Add Rob's Reviewed-by tag to the patch "dt-bindings: power: reset: Unrequire
regmap property in syscon-reboot node"

Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
Cc: Alexey Malahov <Alexey.Malahov@xxxxxxxxxxxxxxxxxxxx>
Cc: Maxim Kaurkin <Maxim.Kaurkin@xxxxxxxxxxxxxxxxxxxx>
Cc: Pavel Parkhomenko <Pavel.Parkhomenko@xxxxxxxxxxxxxxxxxxxx>
Cc: Ramil Zaripov <Ramil.Zaripov@xxxxxxxxxxxxxxxxxxxx>
Cc: Ekaterina Skachko <Ekaterina.Skachko@xxxxxxxxxxxxxxxxxxxx>
Cc: Vadim Vlasov <V.Vlasov@xxxxxxxxxxxxxxxxxxxx>
Cc: Alexey Kolotnikov <Alexey.Kolotnikov@xxxxxxxxxxxxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-pm@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx

Serge Semin (2):
dt-bindings: power: reset: Unrequire regmap property in syscon-reboot
power: reset: syscon-reboot: Add parental syscon support

.../bindings/power/reset/syscon-reboot.yaml | 15 ++++++++++-----
drivers/power/reset/syscon-reboot.c | 7 +++++--
2 files changed, 15 insertions(+), 7 deletions(-)