xref: /openbmc/u-boot/board/sunxi/gmac.c (revision c4f80f50)
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 }
33