ARM: OMAP2+: Use srst_udelay for USB on dm814x

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>

diff --git a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
index f8cc40021729810b4d39619ae57109e3eae9a1f2..743a2a2183a07dae9ce8e09b817a7ef8cf651cbc 100644 (file)
--- a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
@@ -546,9 +546,11 @@ static struct omap_hwmod_ocp_if dm81xx_alwon_l3_slow__gpmc = {
        .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 = {
        .rev_offs       = 0x0,
        .sysc_offs      = 0x10,
+       .srst_udelay    = 2,
        .sysc_flags     = SYSC_HAS_SIDLEMODE | SYSC_HAS_MIDLEMODE |
                                SYSC_HAS_SOFTRESET,
        .idlemodes      = SIDLE_SMART | MSTANDBY_FORCE | MSTANDBY_SMART,