ARM: brcmstb: add infrastructure for ARM-based Broadcom STB SoCs

The BCM7xxx series of Broadcom SoCs are used primarily in set-top boxes.

This patch adds machine support for the ARM-based Broadcom SoCs.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
ARM: brcmstb: add debug UART for earlyprintk support

Add the UART definitions needed to support earlyprintk on brcmstb machines.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
ARM: brcmstb: add CPU binding for Broadcom Brahma15

Add the Broadcom Brahma B15 CPU to the DT CPU binding list.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
ARM: brcmstb: add misc. DT bindings for brcmstb

Document the bindings that the Broadcom STB platform needs
for proper bootup.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
ARM: brcmstb: gic: add compatible string for Broadcom Brahma15

Document the Broadcom Brahma B15 GIC implementation as compatible
with the ARM GIC standard.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
ARM: brcmstb: dts: add a reference DTS for Broadcom 7445

Add a sample DTS which will allow bootup of a board populated
with the BCM7445 chip.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Matt Porter <mporter@linaro.org>
ARM: brcmstb: select GISB arbiter and interrupt drivers

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
ARM: do CPU-specific init for Broadcom Brahma15 cores

Perform any CPU-specific initialization required on the
Broadcom Brahma-15 core.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: Enable erratum 798181 for Broadcom Brahma-B15

Broadcom Brahma-B15 (r0p0..r0p2) is also affected by Cortex-A15
erratum 798181, so enable the workaround for Brahma-B15.

Signed-off-by: Gregory Fong <gregory.0xf0@gmail.com>
Acked-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Will Deacon <will.deacon@arm.com>
MAINTAINERS: add entry for Broadcom ARM STB architecture

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>