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OMAP3: PM: Add D2D clocks and auto-idle setup to PRCM init

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Add D2D clocks (modem_fck, sad2d_ick, mad2d_ick) to clock framework
and ensure that auto-idle bits are set for these clocks during PRCM
init.

Also add omap3_d2d_idle() function called durint PRCM setup which
ensures D2D pins are MUX'd correctly to enable retention for
standalone (no-modem) devices.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman
2009-04-28 15:27:44 -07:00
parent ba87a9beae
commit 8111b221a2
5 changed files with 75 additions and 4 deletions
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25
arch/arm/mach-omap2/pm34xx.c
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@@ -415,14 +415,32 @@ static void __init omap3_iva_idle(void)
OMAP3430_IVA2_MOD, RM_RSTCTRL);
}
static void __init prcm_setup_regs(void)
static void __init omap3_d2d_idle(void)
{
u16 mask, padconf;
/* In a stand alone OMAP3430 where there is not a stacked
* modem for the D2D Idle Ack and D2D MStandby must be pulled
* high. S CONTROL_PADCONF_SAD2D_IDLEACK and
* CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up. */
mask = (1 << 4) | (1 << 3); /* pull-up, enabled */
padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY);
padconf |= mask;
omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY);
padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK);
padconf |= mask;
omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK);
/* reset modem */
prm_write_mod_reg(OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON |
OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST,
CORE_MOD, RM_RSTCTRL);
prm_write_mod_reg(0, CORE_MOD, RM_RSTCTRL);
}
static void __init prcm_setup_regs(void)
{
/* XXX Reset all wkdeps. This should be done when initializing
* powerdomains */
prm_write_mod_reg(0, OMAP3430_IVA2_MOD, PM_WKDEP);
@@ -442,6 +460,7 @@ static void __init prcm_setup_regs(void)
* Note that in the long run this should be done by clockfw
*/
cm_write_mod_reg(
OMAP3430_AUTO_MODEM |
OMAP3430ES2_AUTO_MMC3 |
OMAP3430ES2_AUTO_ICR |
OMAP3430_AUTO_AES2 |
@@ -469,7 +488,7 @@ static void __init prcm_setup_regs(void)
OMAP3430_AUTO_OMAPCTRL |
OMAP3430ES1_AUTO_FSHOSTUSB |
OMAP3430_AUTO_HSOTGUSB |
OMAP3430ES1_AUTO_D2D | /* This is es1 only */
OMAP3430_AUTO_SAD2D |
OMAP3430_AUTO_SSI,
CORE_MOD, CM_AUTOIDLE1);
@@ -483,6 +502,7 @@ static void __init prcm_setup_regs(void)
if (omap_rev() > OMAP3430_REV_ES1_0) {
cm_write_mod_reg(
OMAP3430_AUTO_MAD2D |
OMAP3430ES2_AUTO_USBTLL,
CORE_MOD, CM_AUTOIDLE3);
}
@@ -576,6 +596,7 @@ static void __init prcm_setup_regs(void)
OCP_MOD, OMAP3_PRM_IRQENABLE_MPU_OFFSET);
omap3_iva_idle();
omap3_d2d_idle();
}
static int __init pwrdms_setup(struct powerdomain *pwrdm)