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ARM: OMAP2+: Use srst_udelay for USB on dm814x

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Without this booting t410 can fail randomly with no output
depending on the .config options chosen. Enabling debug_ll
causes the problem to go away. I narrowed this down to USB
by disabling one module at a time.

Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2016-03-02 07:29:29 -08:00
parent 4f5395f0d1
commit ebf2441480
1 changed files with 2 additions and 0 deletions
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arch/arm/mach-omap2/omap_hwmod_81xx_data.c
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@ -546,9 +546,11 @@ static struct omap_hwmod_ocp_if dm81xx_alwon_l3_slow__gpmc = {
.user = OCP_USER_MPU, .user = OCP_USER_MPU,
}; };
/* USB needs udelay 1 after reset at least on hp t410, use 2 for margin */
static struct omap_hwmod_class_sysconfig dm81xx_usbhsotg_sysc = { static struct omap_hwmod_class_sysconfig dm81xx_usbhsotg_sysc = {
.rev_offs = 0x0, .rev_offs = 0x0,
.sysc_offs = 0x10, .sysc_offs = 0x10,
.srst_udelay = 2,
.sysc_flags = SYSC_HAS_SIDLEMODE | SYSC_HAS_MIDLEMODE | .sysc_flags = SYSC_HAS_SIDLEMODE | SYSC_HAS_MIDLEMODE |
SYSC_HAS_SOFTRESET, SYSC_HAS_SOFTRESET,
.idlemodes = SIDLE_SMART | MSTANDBY_FORCE | MSTANDBY_SMART, .idlemodes = SIDLE_SMART | MSTANDBY_FORCE | MSTANDBY_SMART,