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authorSekhar Nori <nsekhar@ti.com>2009-11-12 11:07:22 -0500
committerTom Rix <Tom.Rix@windriver.com>2009-11-27 16:26:14 -0600
commit91172baf46a57807233eb7bcd724b9f10109cfe0 (patch)
tree5a95c4674e269ae5750f8143afaa9c33d8fbe367 /cpu/arm926ejs/davinci/psc.c
parentbbed056e550b26712edc173411c9d7ff9cb7e0e6 (diff)
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TI DA8xx: Add DA8xx cpu functions
Provides initial support for TI OMAP-L1x/DA8xx SoC devices. See http://www.ti.com Provides: Low level initialisation. System clock API. Timer control. Signed-off-by: Nick Thompson <nick.thompson@gefanuc.com>
Diffstat (limited to 'cpu/arm926ejs/davinci/psc.c')
-rw-r--r--cpu/arm926ejs/davinci/psc.c43
1 files changed, 34 insertions, 9 deletions
diff --git a/cpu/arm926ejs/davinci/psc.c b/cpu/arm926ejs/davinci/psc.c
index 5bb972f..8273a7f 100644
--- a/cpu/arm926ejs/davinci/psc.c
+++ b/cpu/arm926ejs/davinci/psc.c
@@ -25,6 +25,7 @@
#include <common.h>
#include <asm/arch/hardware.h>
+#include <asm/io.h>
/*
* The PSC manages three inputs to a "module" which may be a peripheral or
@@ -47,21 +48,45 @@
/* Works on Always On power domain only (no PD argument) */
void lpsc_on(unsigned int id)
{
- dv_reg_p mdstat, mdctl;
+ dv_reg_p mdstat, mdctl, ptstat, ptcmd;
+#ifdef CONFIG_SOC_DA8XX
+ struct davinci_psc_regs *psc_regs;
+#endif
+#ifndef CONFIG_SOC_DA8XX
if (id >= DAVINCI_LPSC_GEM)
return; /* Don't work on DSP Power Domain */
mdstat = REG_P(PSC_MDSTAT_BASE + (id * 4));
mdctl = REG_P(PSC_MDCTL_BASE + (id * 4));
+ ptstat = REG_P(PSC_PTSTAT);
+ ptcmd = REG_P(PSC_PTCMD);
+#else
+ if (id < DAVINCI_LPSC_PSC1_BASE) {
+ if (id >= PSC_PSC0_MODULE_ID_CNT)
+ return;
+ psc_regs = davinci_psc0_regs;
+ mdstat = &psc_regs->psc0.mdstat[id];
+ mdctl = &psc_regs->psc0.mdctl[id];
+ } else {
+ id -= DAVINCI_LPSC_PSC1_BASE;
+ if (id >= PSC_PSC1_MODULE_ID_CNT)
+ return;
+ psc_regs = davinci_psc1_regs;
+ mdstat = &psc_regs->psc1.mdstat[id];
+ mdctl = &psc_regs->psc1.mdctl[id];
+ }
+ ptstat = &psc_regs->ptstat;
+ ptcmd = &psc_regs->ptcmd;
+#endif
- while (REG(PSC_PTSTAT) & 0x01)
+ while (readl(ptstat) & 0x01)
continue;
- if ((*mdstat & 0x1f) == 0x03)
- return; /* Already on and enabled */
+ if ((readl(mdstat) & 0x1f) == 0x03)
+ return; /* Already on and enabled */
- *mdctl |= 0x03;
+ writel(readl(mdctl) | 0x03, mdctl);
switch (id) {
#ifdef CONFIG_SOC_DM644X
@@ -80,16 +105,16 @@ void lpsc_on(unsigned int id)
case DAVINCI_LPSC_MEMSTICK:
case DAVINCI_LPSC_McBSP:
case DAVINCI_LPSC_GPIO:
- *mdctl |= 0x200;
+ writel(readl(mdctl) | 0x200, mdctl);
break;
#endif
}
- REG(PSC_PTCMD) = 0x01;
+ writel(0x01, ptcmd);
- while (REG(PSC_PTSTAT) & 0x03)
+ while (readl(ptstat) & 0x01)
continue;
- while ((*mdstat & 0x1f) != 0x03) /* Probably an overkill... */
+ while ((readl(mdstat) & 0x1f) != 0x03)
continue;
}