From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Vasut Date: Sun, 10 May 2015 18:11:17 +0200 Subject: [U-Boot] [PATCH v5 11/15] usb: ohci: Remove unnecessary delays from hc_start and power power-on paths In-Reply-To: <1431259827-8109-12-git-send-email-hdegoede@redhat.com> References: <1431259827-8109-1-git-send-email-hdegoede@redhat.com> <1431259827-8109-12-git-send-email-hdegoede@redhat.com> Message-ID: <201505101811.17858.marex@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Sunday, May 10, 2015 at 02:10:23 PM, Hans de Goede wrote: > The usb spec says that we must wait a minimum amount of time after port > power on (exact time is in the hub descriptor), this is something which > we must not only do for root ports but also for external hub ports, which > is why the common usb_hub code already waits a full second after powering > up ports. Having a separate wait for just the root hub in the ohci-hcd > code only leads to doing the waiting twice for the root ports, so drop the > wait from the ohci-hcd code. > > Signed-off-by: Hans de Goede Acked-by: Marek Vasut Best regards, Marek Vasut