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Diffstat (limited to 'arch/arm/mach-davinci/psc.c')
-rw-r--r--arch/arm/mach-davinci/psc.c29
1 files changed, 27 insertions, 2 deletions
diff --git a/arch/arm/mach-davinci/psc.c b/arch/arm/mach-davinci/psc.c
index d7e210f4b55c..82fdc69d5728 100644
--- a/arch/arm/mach-davinci/psc.c
+++ b/arch/arm/mach-davinci/psc.c
@@ -35,7 +35,7 @@ int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id)
struct davinci_soc_info *soc_info = &davinci_soc_info;
if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) {
- pr_warning("PSC: Bad psc data: 0x%x[%d]\n",
+ pr_warn("PSC: Bad psc data: 0x%x[%d]\n",
(int)soc_info->psc_bases, ctlr);
return 0;
}
@@ -48,6 +48,31 @@ int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id)
return mdstat & BIT(12);
}
+/* Control "reset" line associated with PSC domain */
+void davinci_psc_reset(unsigned int ctlr, unsigned int id, bool reset)
+{
+ u32 mdctl;
+ void __iomem *psc_base;
+ struct davinci_soc_info *soc_info = &davinci_soc_info;
+
+ if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) {
+ pr_warn("PSC: Bad psc data: 0x%x[%d]\n",
+ (int)soc_info->psc_bases, ctlr);
+ return;
+ }
+
+ psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K);
+
+ mdctl = readl(psc_base + MDCTL + 4 * id);
+ if (reset)
+ mdctl &= ~MDCTL_LRST;
+ else
+ mdctl |= MDCTL_LRST;
+ writel(mdctl, psc_base + MDCTL + 4 * id);
+
+ iounmap(psc_base);
+}
+
/* Enable or disable a PSC domain */
void davinci_psc_config(unsigned int domain, unsigned int ctlr,
unsigned int id, bool enable, u32 flags)
@@ -58,7 +83,7 @@ void davinci_psc_config(unsigned int domain, unsigned int ctlr,
u32 next_state = PSC_STATE_ENABLE;
if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) {
- pr_warning("PSC: Bad psc data: 0x%x[%d]\n",
+ pr_warn("PSC: Bad psc data: 0x%x[%d]\n",
(int)soc_info->psc_bases, ctlr);
return;
}