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ARM: mvebu: add core support for Armada 39x

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This commit adds the core support for Armada 39x, which is quite
simple:

 - a new Kconfig option which selects the appropriate clock and
   pinctrl drivers as well as other common features (GIC, L2 cache,
   SMP, etc.)

 - a new DT_MACHINE_START which references the top-level compatible
   strings supported for the Marvell Armada 39x.

 - a new SMP enable-method. The mechanism to enable CPUs for Armada
   39x appears to be the same as Armada 38x. However, we do not want
   to use marvell,armada-380-smp in the Device Tree, in the case of
   the discovery of a subtle difference in the future, which would
   require changing the Device Tree. And the enable-method isn't a
   compatible string: you can't specify several values and expect a
   fallback on the second string if the first one isn't
   supported. Therefore, we simply declare the SMP enable method
   "marvell,armada-390-smp" as doing the same thing as the
   "marvell,armada-380-smp" one.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
This commit is contained in:
Thomas Petazzoni 2015-03-03 15:41:11 +01:00 committed by Gregory CLEMENT
parent 007fa9467f
commit 242ede0bdd
3 changed files with 30 additions and 0 deletions
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14
arch/arm/mach-mvebu/Kconfig
View File

@ -64,6 +64,20 @@ config MACH_ARMADA_38X
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 380/385 SoC with device tree.
config MACH_ARMADA_39X
bool "Marvell Armada 39x boards" if ARCH_MULTI_V7
select ARM_GIC
select ARMADA_39X_CLK
select CACHE_L2X0
select HAVE_ARM_SCU
select HAVE_ARM_TWD if SMP
select HAVE_SMP
select MACH_MVEBU_V7
select PINCTRL_ARMADA_39X
help
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 39x SoC with device tree.
config MACH_ARMADA_XP
bool "Marvell Armada XP boards" if ARCH_MULTI_V7
select ARMADA_XP_CLK

14
arch/arm/mach-mvebu/board-v7.c
View File

@ -232,3 +232,17 @@ DT_MACHINE_START(ARMADA_38X_DT, "Marvell Armada 380/385 (Device Tree)")
.restart = mvebu_restart,
.dt_compat = armada_38x_dt_compat,
MACHINE_END
static const char * const armada_39x_dt_compat[] __initconst = {
"marvell,armada390",
"marvell,armada398",
NULL,
};
DT_MACHINE_START(ARMADA_39X_DT, "Marvell Armada 39x (Device Tree)")
.l2c_aux_val = 0,
.l2c_aux_mask = ~0,
.init_irq = mvebu_init_irq,
.restart = mvebu_restart,
.dt_compat = armada_39x_dt_compat,
MACHINE_END

2
arch/arm/mach-mvebu/platsmp-a9.c
View File

@ -110,3 +110,5 @@ CPU_METHOD_OF_DECLARE(mvebu_armada_375_smp, "marvell,armada-375-smp",
&mvebu_cortex_a9_smp_ops);
CPU_METHOD_OF_DECLARE(mvebu_armada_380_smp, "marvell,armada-380-smp",
&armada_38x_smp_ops);
CPU_METHOD_OF_DECLARE(mvebu_armada_390_smp, "marvell,armada-390-smp",
&armada_38x_smp_ops);