target/linux/brcm63xx/patches-2.6.32/210-init_gpio_out_low_high_current_value_at_boot.patch

   1 To avoid glitch during gpio initialisation, fetch gpio output
   2 registers values left by bootloader.
   3
   4 Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
   5 ---
   6  arch/mips/bcm63xx/gpio.c |    2 ++
   7  1 files changed, 2 insertions(+), 0 deletions(-)
   8
   9 --- a/arch/mips/bcm63xx/gpio.c
  10 +++ b/arch/mips/bcm63xx/gpio.c
  11 @@ -125,6 +125,8 @@ static struct gpio_chip bcm63xx_gpio_chi
  12
  13  int __init bcm63xx_gpio_init(void)
  14  {
  15 +       gpio_out_low = bcm_gpio_readl(GPIO_DATA_LO_REG);
  16 +       gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG);
  17         bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count();
  18         pr_info("registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio);
  19