ARM: keystone2: psc: introduce function to hold and release module in reset.

[u-boot] / arch / arm / mach-tegra / psci.S

diff --git a/arch/arm/mach-tegra/psci.S b/arch/arm/mach-tegra/psci.S
index e4733e638351462a781a47209f40862dbd54aa62..b836da1c0ed79b958c5544cfeff36a55b90314fe 100644 (file)
--- a/arch/arm/mach-tegra/psci.S
+++ b/arch/arm/mach-tegra/psci.S
@@ -51,12 +51,25 @@ ENTRY(psci_arch_init)
        str     r5, [r4]
 
        bl      psci_get_cpu_id         @ CPU ID => r0
+
+       adr     r5, _sys_clock_freq
+       cmp     r0, #0
+
+       mrceq   p15, 0, r7, c14, c0, 0  @ read CNTFRQ from CPU0
+       streq   r7, [r5]
+
+       ldrne   r7, [r5]
+       mcrne   p15, 0, r7, c14, c0, 0  @ write CNTFRQ to CPU1..3
+
        bl      psci_get_cpu_stack_top  @ stack top => r0
        mov     sp, r0
 
        bx      r6
 ENDPROC(psci_arch_init)
 
+_sys_clock_freq:
+       .word   0
+
 ENTRY(psci_cpu_off)
        bl      psci_cpu_off_common