hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -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 = {