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| author | Gregory CLEMENT <gregory.clement@free-electrons.com> | 2014-07-23 15:00:52 +0200 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2014-07-24 11:47:40 +0000 |
| commit | e53b1fd432497942a0fdfd0e89c3d30241cb4d2c (patch) | |
| tree | 5c091ae93b8ca9f2db67f354eed30f4a659f6eb4 /arch/arm/mach-mvebu/pmsu_ll.S | |
| parent | 3b9e4b1441aedcb26079f690aa11f3f9f93e5182 (diff) | |
| download | linux-e53b1fd432497942a0fdfd0e89c3d30241cb4d2c.tar.gz | |
ARM: mvebu: add cpuidle support for Armada 38x
Unlike the Armada XP and the Armada 370, this SoC uses a Cortex A9 core. Consequently, the procedure to enter the idle state is different: interaction with the SCU, not disabling snooping, etc. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1406120453-29291-16-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'arch/arm/mach-mvebu/pmsu_ll.S')
| -rw-r--r-- | arch/arm/mach-mvebu/pmsu_ll.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/pmsu_ll.S b/arch/arm/mach-mvebu/pmsu_ll.S index 17d7f3b3976d..a945756cfb45 100644 --- a/arch/arm/mach-mvebu/pmsu_ll.S +++ b/arch/arm/mach-mvebu/pmsu_ll.S @@ -23,6 +23,20 @@ ARM_BE8(setend be ) @ go BE8 if entered LE b cpu_resume ENDPROC(armada_370_xp_cpu_resume) +ENTRY(armada_38x_cpu_resume) + /* do we need it for Armada 38x*/ +ARM_BE8(setend be ) @ go BE8 if entered LE + bl v7_invalidate_l1 + mrc p15, 4, r1, c15, c0 @ get SCU base address + orr r1, r1, #0x8 @ SCU CPU Power Status Register + mrc 15, 0, r0, cr0, cr0, 5 @ get the CPU ID + and r0, r0, #15 + add r1, r1, r0 + mov r0, #0x0 + strb r0, [r1] @ switch SCU power state to Normal mode + b cpu_resume +ENDPROC(armada_38x_cpu_resume) + .global mvebu_boot_wa_start .global mvebu_boot_wa_end |