From: Nishanth Menon <nm@ti.com>
To: Jassi Brar <jassisinghbrar@gmail.com>, Rob Herring <robh+dt@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
Santosh Shilimkar <ssantosh@kernel.org>, <fcooper@ti.com>,
<s-anna@ti.com>, Nishanth Menon <nm@ti.com>
Subject: [PATCH V2 0/2] mailbox: Introduce Texas Instrument's message manager driver
Date: Fri, 26 Feb 2016 16:24:10 -0600 [thread overview]
Message-ID: <1456525452-30638-1-git-send-email-nm@ti.com> (raw)
Hi,
The following v2 of the series provides a base driver for the support
of TI's message manager hardware block which facilitates communication
between multiple compute engines(or processors) with a central system
controller (called PMMC in K2G SoC). Keystone family of TI processors
incorporate this solution starting with K2G[1].
The hardware specification is available here:
http://www.ti.com/lit/ug/spruhy8/spruhy8.pdf Chapter 8.1 (Message
Manager - NOTE: complete chapter update is estimated to be around
March '16).
Starting with K2G SoC, TI Keystone architecture is moving towards an
architecture similar to ARM Juno platform with a centralized system
controller where all system control takes place - all power management
and system control functions are now centralized in this system
controller. A protocol called TI-SCI (TI System Control Interface)
is built on top of this mailbox driver providing for communication
protocol (similar to SCPI drivers/firmware/arm_scpi.c) Follow on
patches (once the message manager is accepted) will enable the same.
However, an 4.1 kernel based vendor kernel implementation is available
at [2].
The following series is functional in TI vendor kernel, however, was
tested on K2G EVM using the following test fragment:
http://pastebin.ubuntu.com/15209502/
Boot log: http://pastebin.ubuntu.com/15209436/
baseline: v4.5-rc1
Changes since v1:
- dt binding has been majorly upgraded
- driver updates for the bindings
v1: http://marc.info/?l=devicetree&m=145469015018996&w=2
Nishanth Menon (2):
Documentation: dt: mailbox: Add TI Message Manager
mailbox: Introduce TI message manager driver
.../bindings/mailbox/ti,message-manager.txt | 50 ++
drivers/mailbox/Kconfig | 11 +
drivers/mailbox/Makefile | 2 +
drivers/mailbox/ti-msgmgr.c | 657 +++++++++++++++++++++
include/linux/ti-msgmgr.h | 35 ++
5 files changed, 755 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mailbox/ti,message-manager.txt
create mode 100644 drivers/mailbox/ti-msgmgr.c
create mode 100644 include/linux/ti-msgmgr.h
[1] K2G support
https://patchwork.kernel.org/patch/8196481/
https://patchwork.kernel.org/patch/8196491/
https://patchwork.kernel.org/patch/8196471/
[2] TISCI support(for reference): (mailbox client driver)
http://git.ti.com/ti-linux-kernel/ti-linux-kernel/blobs/ti-lsk-linux-4.1.y/Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
http://git.ti.com/ti-linux-kernel/ti-linux-kernel/blobs/ti-lsk-linux-4.1.y/drivers/firmware/ti_sci.c
http://git.ti.com/ti-linux-kernel/ti-linux-kernel/blobs/ti-lsk-linux-4.1.y/drivers/firmware/ti_sci.h
http://git.ti.com/ti-linux-kernel/ti-linux-kernel/blobs/ti-lsk-linux-4.1.y/include/linux/ti_sci_protocol.h
The above protocol is used for clock, generic powerdomain, reset
etc..
--
2.7.0
next reply other threads:[~2016-02-26 22:24 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-26 22:24 Nishanth Menon [this message]
2016-02-26 22:24 ` [PATCH V2 1/2] Documentation: dt: mailbox: Add TI Message Manager Nishanth Menon
2016-03-03 21:09 ` Rob Herring
2016-02-26 22:24 ` [PATCH V2 2/2] mailbox: Introduce TI message manager driver Nishanth Menon
2016-03-04 5:18 ` Jassi Brar
2016-03-04 13:05 ` Nishanth Menon
2016-03-07 18:31 ` Jassi Brar
2016-03-07 19:18 ` Nishanth Menon
2016-03-08 7:10 ` Jassi Brar
2016-03-08 14:37 ` Nishanth Menon
2016-03-15 5:31 ` Jassi Brar
2016-03-15 17:05 ` Nishanth Menon
2016-03-16 5:16 ` Jassi Brar
2016-03-17 0:29 ` Nishanth Menon
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