From: Lee Jones <lee.jones@linaro.org>
To: Sergey.Semin@baikalelectronics.ru
Cc: Serge Semin <fancer.lancer@gmail.com>,
Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
Maxim Kaurkin <Maxim.Kaurkin@baikalelectronics.ru>,
Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>,
Ekaterina Skachko <Ekaterina.Skachko@baikalelectronics.ru>,
Vadim Vlasov <V.Vlasov@baikalelectronics.ru>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Paul Burton <paulburton@kernel.org>,
Ralf Baechle <ralf@linux-mips.org>,
Sebastian Reichel <sre@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4] syscon: Alter syscon and reboot-mode drivers
Date: Mon, 9 Mar 2020 07:13:13 +0000 [thread overview]
Message-ID: <20200309071313.GA3200@dell> (raw)
In-Reply-To: <20200306130356.6ABDD8030703@mail.baikalelectronics.ru>
On Fri, 06 Mar 2020, Sergey.Semin@baikalelectronics.ru wrote:
> From: Serge Semin <fancer.lancer@gmail.com>
>
> A lot of custom functionality can be tuned by means of a syscon-registers
> placed in Baikal-T1 CCU memory space (though in documentation they are
> called system devices registers). While in most of the case the syscon
> registers usage will be distributed between corresponding subsystem drivers
> (thanks to pretty much coherent design of the registers fields), there are
> some peculiarities we should reflect in the generic syscon code.
>
> First of all seeing there is an map endiannes config acceptable by the syscon
> it would be justified to add the corresponding properties declared in the
> mfd/syscon.yaml bindings file. Don't really know why this hasn't been done
> before.
>
> Then 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.
>
> Finally seeing the syscon-reboot-mode devices are mostly used in conjuction
> with just syscon-reboot device (in particular Baikal-T1 CCU WDT RCR register is
> preserved during any type of reboots) and for several other reasons (see the
> commit message for details), we suggest to add the 'regmap' property support
> to the syscon-reboot-mode driver. This would eliminate the requirement of
> placing the syscon-reboot-mode dts-node in the syscon sub-nodes area.
>
> This patchset is rebased and tested on the mainline Linux kernel 5.6-rc4:
> commit 98d54f81e36b ("Linux 5.6-rc4").
>
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> Signed-off-by: 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: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> Cc: Paul Burton <paulburton@kernel.org>
> Cc: Ralf Baechle <ralf@linux-mips.org>
> Cc: Lee Jones <lee.jones@linaro.org>
> Cc: Sebastian Reichel <sre@kernel.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: devicetree@vger.kernel.org
> Cc: linux-pm@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
>
> Serge Semin (4):
> dt-bindings: syscon: Add syscon endian properties support
> dt-bindings: power: reset: Replace SYSCON reboot-mode legacy bindings
> with YAML-based one
> dt-bindings: power: reset: Add regmap support to the SYSCON
> reboot-mode bindings
> power: reset: syscon-reboot-mode: Add regmap dts-property support
>
> .../devicetree/bindings/mfd/syscon.yaml | 14 +++++
> .../power/reset/syscon-reboot-mode.txt | 35 -----------
> .../power/reset/syscon-reboot-mode.yaml | 58 +++++++++++++++++++
> drivers/power/reset/syscon-reboot-mode.c | 11 +++-
> 4 files changed, 80 insertions(+), 38 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
Please re-send this patch --threaded.
As it stands, it's been scattered to the 4 winds throughout my inbox.
--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2020-03-09 7:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-06 13:03 [PATCH 0/4] syscon: Alter syscon and reboot-mode drivers Sergey.Semin
2020-03-09 7:13 ` Lee Jones [this message]
[not found] ` <20200309071233.12D6980307C8@mail.baikalelectronics.ru>
2020-03-10 0:35 ` Sergey Semin
2020-05-07 23:38 ` [PATCH v2 0/3] syscon: Alter syscon and reboot drivers Serge Semin
2020-05-07 23:38 ` [PATCH v2 1/3] dt-bindings: power: reset: Convert syscon-reboot-mode to DT schema Serge Semin
2020-05-09 0:30 ` Sebastian Reichel
2020-05-10 8:47 ` Serge Semin
2020-05-07 23:38 ` [PATCH v2 2/3] dt-bindings: power: reset: Unrequire regmap property in syscon-reboot node Serge Semin
2020-05-15 3:14 ` Rob Herring
2020-05-16 13:26 ` Serge Semin
2020-05-07 23:38 ` [PATCH v2 3/3] power: reset: syscon-reboot: Add parental syscon support Serge Semin
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