u-boot/board/sunxi/gmac.c

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#include <common.h>
#include <netdev.h>
#include <miiphy.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
void eth_init_board(void)
{
struct sunxi_ccm_reg *const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
/* Set MII clock */
#ifdef CONFIG_RGMII
setbits_le32(&ccm->gmac_clk_cfg, CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII |
CCM_GMAC_CTRL_GPIT_RGMII);
setbits_le32(&ccm->gmac_clk_cfg,
CCM_GMAC_CTRL_TX_CLK_DELAY(CONFIG_GMAC_TX_DELAY));
#else
setbits_le32(&ccm->gmac_clk_cfg, CCM_GMAC_CTRL_TX_CLK_SRC_MII |
CCM_GMAC_CTRL_GPIT_MII);
#endif
}