Merge branch 'master' of git://git.denx.de/u-boot-video
[platform/kernel/u-boot.git] / 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 #ifdef CONFIG_RGMII
20         setbits_le32(&ccm->gmac_clk_cfg, CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII |
21                 CCM_GMAC_CTRL_GPIT_RGMII);
22 #else
23         setbits_le32(&ccm->gmac_clk_cfg, CCM_GMAC_CTRL_TX_CLK_SRC_MII |
24                 CCM_GMAC_CTRL_GPIT_MII);
25 #endif
26
27         /*
28          * In order for the gmac nic to work reliable on the Bananapi, we
29          * need to set bits 10-12 GTXDC "GMAC Transmit Clock Delay Chain"
30          * of the GMAC clk register to 3.
31          */
32 #ifdef CONFIG_TARGET_BANANAPI
33         setbits_le32(&ccm->gmac_clk_cfg, 0x3 << 10);
34 #endif
35
36         /* Configure pin mux settings for GMAC */
37         for (pin = SUNXI_GPA(0); pin <= SUNXI_GPA(16); pin++) {
38 #ifdef CONFIG_RGMII
39                 /* skip unused pins in RGMII mode */
40                 if (pin == SUNXI_GPA(9) || pin == SUNXI_GPA(14))
41                         continue;
42 #endif
43                 sunxi_gpio_set_cfgpin(pin, SUN7I_GPA0_GMAC);
44                 sunxi_gpio_set_drv(pin, 3);
45         }
46
47 #ifdef CONFIG_RGMII
48         return designware_initialize(SUNXI_GMAC_BASE, PHY_INTERFACE_MODE_RGMII);
49 #else
50         return designware_initialize(SUNXI_GMAC_BASE, PHY_INTERFACE_MODE_MII);
51 #endif
52 }