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| author | Tony Lindgren <tony@atomide.com> | 2016-03-02 15:29:29 (GMT) |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2016-03-02 15:29:29 (GMT) |
| commit | ebf24414809200915b9ddf7f109bba7c278c8210 (patch) | |
| tree | fc2f71a470c452003923754d0a12c45378513d40 /arch/arm | |
| parent | 4f5395f0d1a5b7c8921331ef81081da00302a37c (diff) | |
| download | linux-ebf24414809200915b9ddf7f109bba7c278c8210.tar.xz | |
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_81xx_data.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c index f8cc400..743a2a2 100644 --- 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, |