redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

ARM: tegra: make tegra_resume can work for Tegra114 

Tegra114 had a newer flow controller hardware that makes its behavior and
configurations are different with other Tegra series. We fix the common
resume function of tegra_resume to make it can work on Tegra114 by checking
SoC ID. And also checking CPU primary part number to isolate the support
code for Cortex A9 and A15.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
hifive-unleashed-5.1
Joseph Lo 2013-05-20 18:39:26 +08:00 committed by Stephen Warren
parent f6d06f3366
commit ecc4d9da21
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/arm/mach-tegra/reset-handler.S
View File

@ -47,23 +47,27 @@ ENTRY(tegra_resume)
THUMB( it ne )
bne cpu_resume @ no
#ifdef CONFIG_ARCH_TEGRA_3x_SOC
#ifndef CONFIG_ARCH_TEGRA_2x_SOC
/* Are we on Tegra20? */
tegra_get_soc_id TEGRA_APB_MISC_BASE, r6
cmp r6, #TEGRA20
beq 1f @ Yes
/* Clear the flow controller flags for this CPU. */
mov32 r2, TEGRA_FLOW_CTRL_BASE + FLOW_CTRL_CPU0_CSR @ CPU0 CSR
ldr r1, [r2]
cpu_to_csr_req r1, r0
mov32 r2, TEGRA_FLOW_CTRL_BASE
ldr r1, [r2, r1]
/* Clear event & intr flag */
orr r1, r1, \
#FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG
movw r0, #0x0FFD @ enable, cluster_switch, immed, & bitmaps
movw r0, #0x3FFD @ enable, cluster_switch, immed, bitmaps
@ & ext flags for CPU power mgnt
bic r1, r1, r0
str r1, [r2]
1:
#endif
check_cpu_part_num 0xc09, r8, r9
bne not_ca9
#ifdef CONFIG_HAVE_ARM_SCU
/* enable SCU */
mov32 r0, TEGRA_ARM_PERIF_BASE
@ -74,6 +78,7 @@ ENTRY(tegra_resume)
/* L2 cache resume & re-enable */
l2_cache_resume r0, r1, r2, l2x0_saved_regs_addr
not_ca9:
b cpu_resume
ENDPROC(tegra_resume)