diff options
Diffstat (limited to 'arch/arm/mach-tegra/sleep.S')
| -rw-r--r-- | arch/arm/mach-tegra/sleep.S | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/arch/arm/mach-tegra/sleep.S b/arch/arm/mach-tegra/sleep.S index c4628e9691bb..dff63a166575 100644 --- a/arch/arm/mach-tegra/sleep.S +++ b/arch/arm/mach-tegra/sleep.S @@ -106,27 +106,15 @@ ENDPROC(tegra_pen_unlock) /* * tegra_cpu_wfi * - * puts current CPU in clock-gated wfi using the flow controller + * puts current CPU in wfi + * CPU core clock-gates itself during wfi * * corrupts r0-r3 * must be called with MMU on */ ENTRY(tegra_cpu_wfi) - cpu_id r0 - cpu_to_halt_reg r1, r0 - cpu_to_csr_reg r2, r0 - mov32 r0, TEGRA_FLOW_CTRL_VIRT - mov r3, #FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG - str r3, [r0, r2] @ clear event & interrupt status - mov r3, #FLOW_CTRL_WAIT_FOR_INTERRUPT | FLOW_CTRL_JTAG_RESUME - str r3, [r0, r1] @ put flow controller in wait irq mode dsb wfi - mov r3, #0 - str r3, [r0, r1] @ clear flow controller halt status - mov r3, #FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG - str r3, [r0, r2] @ clear event & interrupt status - dsb mov pc, lr ENDPROC(tegra_cpu_wfi) |