USB: Armada100: Add UTMI PHY interface driver

This patch adds USB host controller's UTMI PHY interface driver for
Armada100 SOCs.

Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>

2 files changed, 87 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-armada100/armada100.h b/arch/arm/include/asm/arch-armada100/armada100.h
index 0ed3a8ea526..70fba277074 100644
--- a/arch/arm/include/asm/arch-armada100/armada100.h
+++ b/arch/arm/include/asm/arch-armada100/armada100.h
@@ -43,6 +43,14 @@
 #define SSP2_APBCLK		0x01
 #define SSP2_FNCLK		0x02
 
+/* USB Clock/reset control bits */
+#define USB_SPH_AXICLK_EN	0x10
+#define USB_SPH_AXI_RST		0x02
+
+/* MPMU Clocks */
+#define APB2_26M_EN		(1 << 20)
+#define AP_26M			(1 << 4)
+
 /* Register Base Addresses */
 #define ARMD1_DRAM_BASE		0xB0000000
 #define ARMD1_FEC_BASE		0xC0800000
diff --git a/arch/arm/include/asm/arch-armada100/utmi-armada100.h b/arch/arm/include/asm/arch-armada100/utmi-armada100.h
new file mode 100644
index 00000000000..097561f1eb5
--- /dev/null
+++ b/arch/arm/include/asm/arch-armada100/utmi-armada100.h
@@ -0,0 +1,79 @@
+/*
+ * (C) Copyright 2012
+ * eInfochips Ltd. <www.einfochips.com>
+ * Written-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
+ *
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef __UTMI_ARMADA100__
+#define __UTMI_ARMADA100__
+
+#define UTMI_PHY_BASE		0xD4206000
+
+/* utmi_ctrl - bits */
+#define INPKT_DELAY_SOF		(1 << 28)
+#define PLL_PWR_UP		2
+#define PHY_PWR_UP		1
+
+/* utmi_pll - bits */
+#define PLL_FBDIV_MASK		0x00000FF0
+#define PLL_FBDIV		4
+#define PLL_REFDIV_MASK		0x0000000F
+#define PLL_REFDIV		0
+#define PLL_READY		0x800000
+#define VCOCAL_START		(1 << 21)
+
+#define N_DIVIDER		0xEE
+#define M_DIVIDER		0x0B
+
+/* utmi_tx - bits */
+#define CK60_PHSEL		17
+#define PHSEL_VAL		0x4
+#define RCAL_START		(1 << 12)
+
+/*
+ * USB PHY registers
+ * Refer Datasheet Appendix A.21
+ */
+struct armd1usb_phy_reg {
+	u32 utmi_rev;	/* USB PHY Revision */
+	u32 utmi_ctrl;	/* USB PHY Control register */
+	u32 utmi_pll;	/* PLL register */
+	u32 utmi_tx;	/* Tx register */
+	u32 utmi_rx;	/* Rx register */
+	u32 utmi_ivref;	/* IVREF register */
+	u32 utmi_tst_g0;	/* Test group 0 register */
+	u32 utmi_tst_g1;	/* Test group 1 register */
+	u32 utmi_tst_g2;	/* Test group 2 register */
+	u32 utmi_tst_g3;	/* Test group 3 register */
+	u32 utmi_tst_g4;	/* Test group 4 register */
+	u32 utmi_tst_g5;	/* Test group 5 register */
+	u32 utmi_reserve;	/* Reserve Register */
+	u32 utmi_usb_int;	/* USB interuppt register */
+	u32 utmi_dbg_ctl;	/* Debug control register */
+	u32 utmi_otg_addon;	/* OTG addon register */
+};
+
+int utmi_init(void);
+
+#endif /* __UTMI_ARMADA100__ */