board/sunxi/gmac.c

   1 #include <common.h>
   2 #include <netdev.h>
   3 #include <miiphy.h>
   4 #include <asm/gpio.h>
   5 #include <asm/io.h>
   6 #include <asm/arch/clock.h>
   7 #include <asm/arch/gpio.h>
   8
   9 int sunxi_gmac_initialize(bd_t *bis)
  10 {
  11         int pin;
  12         struct sunxi_ccm_reg *const ccm =
  13                 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
  14
  15         /* Set up clock gating */
  16         setbits_le32(&ccm->ahb_gate1, 0x1 << AHB_GATE_OFFSET_GMAC);
  17
  18         /* Set MII clock */
  19         setbits_le32(&ccm->gmac_clk_cfg, CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII |
  20                 CCM_GMAC_CTRL_GPIT_RGMII);
  21
  22         /* Configure pin mux settings for GMAC */
  23         for (pin = SUNXI_GPA(0); pin <= SUNXI_GPA(16); pin++) {
  24                 /* skip unused pins in RGMII mode */
  25                 if (pin == SUNXI_GPA(9) || pin == SUNXI_GPA(14))
  26                         continue;
  27                 sunxi_gpio_set_cfgpin(pin, SUN7I_GPA0_GMAC);
  28                 sunxi_gpio_set_drv(pin, 3);
  29         }
  30
  31         return designware_initialize(SUNXI_GMAC_BASE, PHY_INTERFACE_MODE_RGMII);
  32 }