summaryrefslogtreecommitdiff
path: root/arch/x86
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/cpu/quark/quark.c41
-rw-r--r--arch/x86/include/asm/arch-quark/quark.h8
2 files changed, 49 insertions, 0 deletions
diff --git a/arch/x86/cpu/quark/quark.c b/arch/x86/cpu/quark/quark.c
index dda3c7c..637c370 100644
--- a/arch/x86/cpu/quark/quark.c
+++ b/arch/x86/cpu/quark/quark.c
@@ -125,6 +125,44 @@ static void quark_pcie_early_init(void)
msg_port_io_write(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L1, pcie_cfg);
}
+static void quark_usb_early_init(void)
+{
+ u32 usb;
+
+ /* The sequence below comes from Quark firmware writer guide */
+
+ usb = msg_port_alt_read(MSG_PORT_USB_AFE, USB2_GLOBAL_PORT);
+ usb &= ~(1 << 1);
+ usb |= ((1 << 6) | (1 << 7));
+ msg_port_alt_write(MSG_PORT_USB_AFE, USB2_GLOBAL_PORT, usb);
+
+ usb = msg_port_alt_read(MSG_PORT_USB_AFE, USB2_COMPBG);
+ usb &= ~((1 << 8) | (1 << 9));
+ usb |= ((1 << 7) | (1 << 10));
+ msg_port_alt_write(MSG_PORT_USB_AFE, USB2_COMPBG, usb);
+
+ usb = msg_port_alt_read(MSG_PORT_USB_AFE, USB2_PLL2);
+ usb |= (1 << 29);
+ msg_port_alt_write(MSG_PORT_USB_AFE, USB2_PLL2, usb);
+
+ usb = msg_port_alt_read(MSG_PORT_USB_AFE, USB2_PLL1);
+ usb |= (1 << 1);
+ msg_port_alt_write(MSG_PORT_USB_AFE, USB2_PLL1, usb);
+
+ usb = msg_port_alt_read(MSG_PORT_USB_AFE, USB2_PLL1);
+ usb &= ~((1 << 3) | (1 << 4) | (1 << 5));
+ usb |= (1 << 6);
+ msg_port_alt_write(MSG_PORT_USB_AFE, USB2_PLL1, usb);
+
+ usb = msg_port_alt_read(MSG_PORT_USB_AFE, USB2_PLL2);
+ usb &= ~(1 << 29);
+ msg_port_alt_write(MSG_PORT_USB_AFE, USB2_PLL2, usb);
+
+ usb = msg_port_alt_read(MSG_PORT_USB_AFE, USB2_PLL2);
+ usb |= (1 << 24);
+ msg_port_alt_write(MSG_PORT_USB_AFE, USB2_PLL2, usb);
+}
+
static void quark_enable_legacy_seg(void)
{
u32 hmisc2;
@@ -164,6 +202,9 @@ int arch_cpu_init(void)
*/
quark_pcie_early_init();
+ /* Initialize USB2 PHY */
+ quark_usb_early_init();
+
/* Turn on legacy segments (A/B/E/F) decode to system RAM */
quark_enable_legacy_seg();
diff --git a/arch/x86/include/asm/arch-quark/quark.h b/arch/x86/include/asm/arch-quark/quark.h
index aad7fbe..5d81976 100644
--- a/arch/x86/include/asm/arch-quark/quark.h
+++ b/arch/x86/include/asm/arch-quark/quark.h
@@ -12,6 +12,7 @@
#define MSG_PORT_HOST_BRIDGE 0x03
#define MSG_PORT_RMU 0x04
#define MSG_PORT_MEM_MGR 0x05
+#define MSG_PORT_USB_AFE 0x14
#define MSG_PORT_PCIE_AFE 0x16
#define MSG_PORT_SOC_UNIT 0x31
@@ -49,6 +50,13 @@
#define ESRAM_BLK_CTRL 0x82
#define ESRAM_BLOCK_MODE 0x10000000
+/* Port 0x14: USB2 AFE Unit Port Registers */
+
+#define USB2_GLOBAL_PORT 0x4001
+#define USB2_PLL1 0x7f02
+#define USB2_PLL2 0x7f03
+#define USB2_COMPBG 0x7f04
+
/* Port 0x16: PCIe AFE Unit Port Registers */
#define PCIE_RXPICTRL0_L0 0x2080