target/linux/brcm63xx/patches-4.1/100-MIPS-BCM63XX-add-USB-host-clock-enable-delay.patch

   1 From 80a2f983e9f44dbc3e01ae31c62d877846a7f791 Mon Sep 17 00:00:00 2001
   2 From: Florian Fainelli <florian@openwrt.org>
   3 Date: Mon, 28 Jan 2013 20:06:19 +0100
   4 Subject: [PATCH 01/11] MIPS: BCM63XX: add USB host clock enable delay
   5
   6 Knowledge of the clock setup delay should remain at the clock level (so
   7 it can be clock specific and CPU specific). Add the 100 milliseconds
   8 required clock delay for the USB host clock when it gets enabled.
   9
  10 Signed-off-by: Florian Fainelli <florian@openwrt.org>
  11 ---
  12  arch/mips/bcm63xx/clk.c |    5 +++++
  13  1 file changed, 5 insertions(+)
  14
  15 --- a/arch/mips/bcm63xx/clk.c
  16 +++ b/arch/mips/bcm63xx/clk.c
  17 @@ -177,6 +177,11 @@ static void usbh_set(struct clk *clk, in
  18                 bcm_hwclock_set(CKCTL_6362_USBH_EN, enable);
  19         else if (BCMCPU_IS_6368())
  20                 bcm_hwclock_set(CKCTL_6368_USBH_EN, enable);
  21 +       else
  22 +               return;
  23 +
  24 +       if (enable)
  25 +               msleep(100);
  26  }
  27
  28  static struct clk clk_usbh = {