diff options
| author | Anand Gadiyar <gadiyar@ti.com> | 2010-07-14 13:38:49 +0000 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2010-08-04 14:43:52 +0300 |
| commit | 58dcfb3a0f5eb0a882f7b696d4d2dc49b709ce5c (patch) | |
| tree | b7595934e1d30cdc7a0c5b3b39109ebe464ada85 /arch/arm/mach-omap2 | |
| parent | b0a1a6ce0597662c06f970643da60b8ebb5cdd1c (diff) | |
omap: 3630: disable TLL SAR on 3630 ES1
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>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | 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 bd87112beea..fa904861668 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 */ |