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omap: 3630: disable TLL SAR on 3630 ES1

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USBTLL Save-and-Restore is broken in 3630 ES1.0. Having it
enabled could result in incorrect register restores as
the OMAP exits off-mode. This could potentially result in
unexpected wakeup events.

(Refer 3630 errata ID i579)

This is fixed in ES1.1. So disable it for ES1.0s.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Anand Gadiyar
2010-07-14 13:38:49 +00:00
committed by Tony Lindgren
parent b0a1a6ce05
commit 58dcfb3a0f
1 changed files with 10 additions and 2 deletions
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12
arch/arm/mach-omap2/powerdomains34xx.h
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@@ -75,12 +75,19 @@ static struct powerdomain mpu_3xxx_pwrdm = {
}, },
}; };
/*
* The USBTLL Save-and-Restore mechanism is broken on
* 3430s upto ES3.0 and 3630ES1.0. Hence this feature
* needs to be disabled on these chips.
* Refer: 3430 errata ID i459 and 3630 errata ID i579
*/
static struct powerdomain core_3xxx_pre_es3_1_pwrdm = { static struct powerdomain core_3xxx_pre_es3_1_pwrdm = {
.name = "core_pwrdm", .name = "core_pwrdm",
.prcm_offs = CORE_MOD, .prcm_offs = CORE_MOD,
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430ES1 | .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430ES1 |
CHIP_IS_OMAP3430ES2 | CHIP_IS_OMAP3430ES2 |
CHIP_IS_OMAP3430ES3_0), CHIP_IS_OMAP3430ES3_0 |
CHIP_IS_OMAP3630ES1),
.pwrsts = PWRSTS_OFF_RET_ON, .pwrsts = PWRSTS_OFF_RET_ON,
.pwrsts_logic_ret = PWRSTS_OFF_RET, .pwrsts_logic_ret = PWRSTS_OFF_RET,
.banks = 2, .banks = 2,
@@ -97,7 +104,8 @@ static struct powerdomain core_3xxx_pre_es3_1_pwrdm = {
static struct powerdomain core_3xxx_es3_1_pwrdm = { static struct powerdomain core_3xxx_es3_1_pwrdm = {
.name = "core_pwrdm", .name = "core_pwrdm",
.prcm_offs = CORE_MOD, .prcm_offs = CORE_MOD,
.omap_chip = OMAP_CHIP_INIT(CHIP_GE_OMAP3430ES3_1), .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430ES3_1 |
CHIP_GE_OMAP3630ES1_1),
.pwrsts = PWRSTS_OFF_RET_ON, .pwrsts = PWRSTS_OFF_RET_ON,
.pwrsts_logic_ret = PWRSTS_OFF_RET, .pwrsts_logic_ret = PWRSTS_OFF_RET,
.flags = PWRDM_HAS_HDWR_SAR, /* for USBTLL only */ .flags = PWRDM_HAS_HDWR_SAR, /* for USBTLL only */