From: Anand Gadiyar <gadiyar@xxxxxx>
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@xxxxxx>
Acked-by: Paul Walmsley <paul@xxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/mach-omap2/powerdomains34xx.h | 12 ++++++++++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-omap2/powerdomains34xx.h b/arch/arm/mach-omap2/powerdomains34xx.h
index bd87112..fa90486 100644
--- a/arch/arm/mach-omap2/powerdomains34xx.h
+++ b/arch/arm/mach-omap2/powerdomains34xx.h
@@ -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 = {
.name = "core_pwrdm",
.prcm_offs = CORE_MOD,
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430ES1 |
CHIP_IS_OMAP3430ES2 |
- CHIP_IS_OMAP3430ES3_0),
+ CHIP_IS_OMAP3430ES3_0 |
+ CHIP_IS_OMAP3630ES1),
.pwrsts = PWRSTS_OFF_RET_ON,
.pwrsts_logic_ret = PWRSTS_OFF_RET,
.banks = 2,
@@ -97,7 +104,8 @@ static struct powerdomain core_3xxx_pre_es3_1_pwrdm = {
static struct powerdomain core_3xxx_es3_1_pwrdm = {
.name = "core_pwrdm",
.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_logic_ret = PWRSTS_OFF_RET,
.flags = PWRDM_HAS_HDWR_SAR, /* for USBTLL only */
--
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