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ARM: mvebu: use dt_fixup to provide fallback for enable-method

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We need to maintain backwards compatibility with device trees that don't
define an enable method. At the same time we want the device tree to be
able to specify an enable-method and have it stick.

Previously by having smp assigned in the DT_MACHINE definition this
would be picked up by setup_arch() and override whatever
arm_dt_init_cpu_maps() had configured. Now we move the initial
assignment of default smp_ops to a dt_fixup and let
arm_dt_init_cpu_maps() override that if the device tree defines an
enable-method.

[olof@lixom.net: Wrap set_smp_ops() in CONFIG_SMP.]
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Gregory CLEMENT <gregory.clement@bootlin.com> (on AX3)
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
This commit is contained in:
Chris Packham 2018-07-26 15:48:56 +12:00 committed by Gregory CLEMENT
parent 5b394b2ddf
commit 3972863aad
1 changed files with 8 additions and 6 deletions
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14
arch/arm/mach-mvebu/board-v7.c
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@ -145,6 +145,13 @@ static void __init mvebu_dt_init(void)
i2c_quirk();
}
static void __init armada_370_xp_dt_fixup(void)
{
#ifdef CONFIG_SMP
smp_set_ops(smp_ops(armada_xp_smp_ops));
#endif
}
static const char * const armada_370_xp_dt_compat[] __initconst = {
"marvell,armada-370-xp",
NULL,
@ -153,17 +160,12 @@ static const char * const armada_370_xp_dt_compat[] __initconst = {
DT_MACHINE_START(ARMADA_370_XP_DT, "Marvell Armada 370/XP (Device Tree)")
.l2c_aux_val = 0,
.l2c_aux_mask = ~0,
/*
* The following field (.smp) is still needed to ensure backward
* compatibility with old Device Trees that were not specifying the
* cpus enable-method property.
*/
.smp = smp_ops(armada_xp_smp_ops),
.init_machine = mvebu_dt_init,
.init_irq = mvebu_init_irq,
.restart = mvebu_restart,
.reserve = mvebu_memblock_reserve,
.dt_compat = armada_370_xp_dt_compat,
.dt_fixup = armada_370_xp_dt_fixup,
MACHINE_END
static const char * const armada_375_dt_compat[] __initconst = {