9 #define AHCI_PHYCS0R 0x00c0
10 #define AHCI_PHYCS1R 0x00c4
11 #define AHCI_PHYCS2R 0x00c8
12 #define AHCI_RWCR 0x00fc
14 /* This magic PHY initialisation was taken from the Allwinner releases
15 * and Linux driver, but is completely undocumented.
17 static int sunxi_ahci_phy_init(u8
*reg_base
)
22 writel(0, reg_base
+ AHCI_RWCR
);
25 setbits_le32(reg_base
+ AHCI_PHYCS1R
, 0x1 << 19);
26 clrsetbits_le32(reg_base
+ AHCI_PHYCS0R
,
28 (0x5 << 24) | (0x1 << 23) | (0x1 << 18));
29 clrsetbits_le32(reg_base
+ AHCI_PHYCS1R
,
30 (0x3 << 16) | (0x1f << 8) | (0x3 << 6),
31 (0x2 << 16) | (0x6 << 8) | (0x2 << 6));
32 setbits_le32(reg_base
+ AHCI_PHYCS1R
, (0x1 << 28) | (0x1 << 15));
33 clrbits_le32(reg_base
+ AHCI_PHYCS1R
, (0x1 << 19));
34 clrsetbits_le32(reg_base
+ AHCI_PHYCS0R
, (0x7 << 20), (0x3 << 20));
35 clrsetbits_le32(reg_base
+ AHCI_PHYCS2R
, (0x1f << 5), (0x19 << 5));
38 setbits_le32(reg_base
+ AHCI_PHYCS0R
, (0x1 << 19));
40 timeout
= 250; /* Power up takes approx 50 us */
42 reg_val
= readl(reg_base
+ AHCI_PHYCS0R
) & (0x7 << 28);
43 if (reg_val
== (0x2 << 28))
46 printf("AHCI PHY power up failed.\n");
52 setbits_le32(reg_base
+ AHCI_PHYCS2R
, (0x1 << 24));
54 timeout
= 100; /* Calibration takes approx 10 us */
56 reg_val
= readl(reg_base
+ AHCI_PHYCS2R
) & (0x1 << 24);
60 printf("AHCI PHY calibration failed.\n");
68 writel(0x7, reg_base
+ AHCI_RWCR
);
73 static int sunxi_sata_probe(struct udevice
*dev
)
79 base
= dev_read_addr(dev
);
80 if (base
== FDT_ADDR_T_NONE
) {
81 debug("%s: Failed to find address (err=%d\n)", __func__
, ret
);
85 ret
= sunxi_ahci_phy_init(reg
);
87 debug("%s: Failed to init phy (err=%d\n)", __func__
, ret
);
90 ret
= ahci_probe_scsi(dev
, base
);
92 debug("%s: Failed to probe (err=%d\n)", __func__
, ret
);
99 static int sunxi_sata_bind(struct udevice
*dev
)
101 struct udevice
*scsi_dev
;
104 ret
= ahci_bind_scsi(dev
, &scsi_dev
);
106 debug("%s: Failed to bind (err=%d\n)", __func__
, ret
);
113 static const struct udevice_id sunxi_ahci_ids
[] = {
114 { .compatible
= "allwinner,sun4i-a10-ahci" },
115 { .compatible
= "allwinner,sun8i-r40-ahci" },
119 U_BOOT_DRIVER(ahci_sunxi_drv
) = {
120 .name
= "ahci_sunxi",
122 .of_match
= sunxi_ahci_ids
,
123 .bind
= sunxi_sata_bind
,
124 .probe
= sunxi_sata_probe
,