On Sun, Jun 10, 2012 at 10:03 AM, Vikram Narayanan <vikram...@gmail.com> wrote:
> /* drop PHY power and assert reset (low) */ > - val = readl(&gpio4->gpio_dr) & ~((1 << 7) | (1 << 9)); > - writel(val, &gpio4->gpio_dr); > - val = readl(&gpio4->gpio_dir) | (1 << 7) | (1 << 9); > - writel(val, &gpio4->gpio_dir); > + gpio_direction_output(GPIO_FEC_RESET_B, 0); > + gpio_direction_output(GPIO_FEC_ENABLE_B, 0); > + > + gpio_direction_output(GPIO_FEC_RESET_B, 1); > + gpio_direction_output(GPIO_FEC_ENABLE_B, 1); gpio_direction_output should be set only once for each GPIO. After you set the direction (input or output) you should use 'gpio_set_value' for setting the GPIO to 0 or 1. Also, please remove the: > + gpio_direction_output(GPIO_FEC_RESET_B, 1); > + gpio_direction_output(GPIO_FEC_ENABLE_B, 1); lines, as the setting to 1 should be after the delay (via gpio_set_value). _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
