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| author | Gregory Nutt <gnutt@nuttx.org> | 2013-11-21 18:25:10 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2013-11-21 18:25:10 -0600 |
| commit | 35f7e9eda07ec1745b346cd24d46453006a2f1e7 (patch) | |
| tree | f351b8def01b9cfe7c9deb5d267f8a8c866e2d9a /nuttx/arch/arm/src/lpc31xx | |
| parent | 8149c74577a60030f94a1270140f165d20e7dfe9 (diff) | |
| download | nuttx-35f7e9eda07ec1745b346cd24d46453006a2f1e7.tar.gz nuttx-35f7e9eda07ec1745b346cd24d46453006a2f1e7.tar.bz2 nuttx-35f7e9eda07ec1745b346cd24d46453006a2f1e7.zip | |
LPC31xx EHCI: Power power changes
Diffstat (limited to 'nuttx/arch/arm/src/lpc31xx')
| -rwxr-xr-x | nuttx/arch/arm/src/lpc31xx/lpc31_ehci.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/nuttx/arch/arm/src/lpc31xx/lpc31_ehci.c b/nuttx/arch/arm/src/lpc31xx/lpc31_ehci.c index a91a3a1d6..19d1c2c5a 100755 --- a/nuttx/arch/arm/src/lpc31xx/lpc31_ehci.c +++ b/nuttx/arch/arm/src/lpc31xx/lpc31_ehci.c @@ -4513,8 +4513,24 @@ FAR struct usbhost_connection_s *lpc31_ehci_initialize(int controller) * PORTSC register to enable power. */ - lpc31_usbhost_vbusdrive(0, true); - up_mdelay(50); + /* Handle root hub status change on each root port */ + + for (i = 0; i < LPC31_EHCI_NRHPORT; i++) + { + /* Enable VBUS power for the port */ + + lpc31_usbhost_vbusdrive(i, true); + up_mdelay(25); + + /* Power up the power. REVISIT: Is this necessary? The PP bit never + * gets set unless I explicitly set it here. + */ + + regval = lpc31_getreg(&HCOR->portsc[i]); + regval |= EHCI_PORTSC_PP; + lpc31_putreg(regval, &HCOR->portsc[i]); + up_mdelay(25); + } /* If there is a USB device in the slot at power up, then we will not * get the status change interrupt to signal us that the device is |