[PATCH 0/3] ARM: K2G: Add support for TI-SCI Generic PM Domains

Nishanth Menon
2016-08-19T23:57:54Z

Texas Instruments' Keystone generation System on Chips (SoC)
starting with 66AK2G02[1], now include a dedicated SoC System Control
entity called PMMC(Power Management Micro Controller) in line with
ARM architecture recommendations. The function of this module is
to integrate all system operations in a centralized location.
Communication with the SoC System Control entity from various
processing units like ARM/DSP occurs over Message Manager hardware
block.

This series adds the base support for device control using generic
power domain framework over the TI System Control Interface (TI-SCI)
protocol[2][3].

Overall architecture is very similar to SCPI[4] as follows:
+----------------+ +---------+ +------------+
| TI SCI GENPD(*)| |TISCI Clk| |TISCI reset |
+------+---------+ +--+------+ +------+-----+
| | |
| +----v--------------+ |
+----------> TISCI Protocol <--+
+----+--------------+
|
+---v-----------+
| MAILBOX FWK |
+---+-----------+
|
+---v-----------+
| TI MSGMGR |-> TISCI hardware block
+---------------+

(*) This series.

Baseline: v4.8-rc1 + [3] (the dependency is due to MAINTAINERS update)
Bootlog: http://pastebin.ubuntu.com/23071846/ (with the addition of couple of mach patches + dts)
Integrated series is available:
https://github.com/nmenon/linux-2.6-playground/commits/upstream/v4.9/tisci-genpd-v1

Dave Gerlach (3):
Documentation: dt: Add TI-SCI PM Domains
dt-bindings: genpd: Add K2G device definitions
soc: ti: Add ti_sci_pm_domains driver

[1] http://www.ti.com/product/66ak2g02
[2] http://processors.wiki.ti.com/index.php/TISCI
[3] https://lkml.org/lkml/2016/8/19/768

.../devicetree/bindings/soc/ti/sci-pm-domain.txt | 58 ++++++
MAINTAINERS | 3 +
arch/arm/mach-keystone/Kconfig | 1 +
drivers/soc/ti/Kconfig | 12 ++
drivers/soc/ti/Makefile | 1 +
drivers/soc/ti/ti_sci_pm_domains.c | 222 +++++++++++++++++++++
include/dt-bindings/genpd/k2g.h | 90 +++++++++
7 files changed, 387 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
create mode 100644 drivers/soc/ti/ti_sci_pm_domains.c
create mode 100644 include/dt-bindings/genpd/k2g.h

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2.9.1.200.gb1ec08f