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ARM: OMAP2/3: CM: fix cm_split_idlest functionality 

cm_split_idlest doesn't take the CM base offset into account right now,
causing it to read reserved registers which show idlestatus as active
always. This will cause the wait_module_ready functionality to be
effectively an expensive NOP, which will cause problems if the
module hasn't really activated during its execution. Fix by adding
the CM offset into the calculation so the wait_module_ready will
access correct register.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Reported-by: Filip Matijevic <filip.matijevic.pz@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tero Kristo 2017-10-30 11:11:04 +02:00 committed by Tony Lindgren
parent 3c4d296e58
commit 6301d58477
2 changed files with 6 additions and 1 deletions
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6
arch/arm/mach-omap2/cm_common.c
View File

@ -68,14 +68,17 @@ void __init omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2)
int cm_split_idlest_reg(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
u8 *idlest_reg_id)
{
int ret;
if (!cm_ll_data->split_idlest_reg) {
WARN_ONCE(1, "cm: %s: no low-level function defined\n",
__func__);
return -EINVAL;
}
return cm_ll_data->split_idlest_reg(idlest_reg, prcm_inst,
ret = cm_ll_data->split_idlest_reg(idlest_reg, prcm_inst,
idlest_reg_id);
*prcm_inst -= cm_base.offset;
return ret;
}
/**
@ -337,6 +340,7 @@ int __init omap2_cm_base_init(void)
if (mem) {
mem->pa = res.start + data->offset;
mem->va = data->mem + data->offset;
mem->offset = data->offset;
}
data->np = np;

1
arch/arm/mach-omap2/prcm-common.h
View File

@ -529,6 +529,7 @@ struct omap_prcm_irq_setup {
struct omap_domain_base {
u32 pa;
void __iomem *va;
s16 offset;
};
/**