This patch adds USB host controller's UTMI PHY interface driver for
Armada100 SOCs.
Signed-off-by: Ajay Bhargav ajay.bhar...@einfochips.com
---
Changes for v2:
- Fix: enable only required clock in MPMU
arch/arm/include/asm/arch-armada100/armada100.h |8 ++
drivers/usb/host/utmi-armada100.c | 87 +++
drivers/usb/host/utmi-armada100.h | 79
3 files changed, 174 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/host/utmi-armada100.c
create mode 100644 drivers/usb/host/utmi-armada100.h
diff --git a/arch/arm/include/asm/arch-armada100/armada100.h
b/arch/arm/include/asm/arch-armada100/armada100.h
index 0ed3a8e..70fba27 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_APBCLK0x01
#define SSP2_FNCLK 0x02
+/* USB Clock/reset control bits */
+#define USB_SPH_AXICLK_EN 0x10
+#define USB_SPH_AXI_RST0x02
+
+/* MPMU Clocks */
+#define APB2_26M_EN(1 20)
+#define AP_26M (1 4)
+
/* Register Base Addresses */
#define ARMD1_DRAM_BASE0xB000
#define ARMD1_FEC_BASE 0xC080
diff --git a/drivers/usb/host/utmi-armada100.c
b/drivers/usb/host/utmi-armada100.c
new file mode 100644
index 000..1a4d3f2
--- /dev/null
+++ b/drivers/usb/host/utmi-armada100.c
@@ -0,0 +1,87 @@
+/*
+ * (C) Copyright 2012
+ * eInfochips Ltd. www.einfochips.com
+ * Written-by: Ajay Bhargav ajay.bhar...@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
+ */
+
+#include common.h
+#include asm/io.h
+#include usb.h
+#include asm/arch/cpu.h
+#include asm/arch/armada100.h
+#include utmi-armada100.h
+
+static void utmi_phy_init(void)
+{
+ struct armd1usb_phy_reg *phy_regs =
+ (struct armd1usb_phy_reg *)UTMI_PHY_BASE;
+
+ setbits_le32(phy_regs-utmi_ctrl, INPKT_DELAY_SOF | PLL_PWR_UP);
+ udelay(1000);
+ setbits_le32(phy_regs-utmi_ctrl, PHY_PWR_UP);
+
+ clrbits_le32(phy_regs-utmi_pll, PLL_FBDIV_MASK | PLL_REFDIV_MASK);
+ setbits_le32(phy_regs-utmi_pll, N_DIVIDER PLL_FBDIV | M_DIVIDER);
+
+ setbits_le32(phy_regs-utmi_tx, PHSEL_VAL CK60_PHSEL);
+
+ /* Calibrate pll */
+ while ((readl(phy_regs-utmi_pll) PLL_READY) == 0)
+ ;
+
+ udelay(200);
+ setbits_le32(phy_regs-utmi_pll, VCOCAL_START);
+ udelay(400);
+ clrbits_le32(phy_regs-utmi_pll, VCOCAL_START);
+
+ udelay(200);
+ setbits_le32(phy_regs-utmi_tx, RCAL_START);
+ udelay(400);
+ clrbits_le32(phy_regs-utmi_tx, RCAL_START);
+
+ while ((readl(phy_regs-utmi_pll) PLL_READY) == 0)
+ ;
+}
+
+/*
+ * Initialize USB host controller's UTMI Physical interface
+ */
+void utmi_init(void)
+{
+ struct armd1mpmu_registers *mpmu_regs =
+ (struct armd1mpmu_registers *)ARMD1_MPMU_BASE;
+
+ struct armd1apmu_registers *apmu_regs =
+ (struct armd1apmu_registers *)ARMD1_APMU_BASE;
+
+ /* Turn on 26Mhz ref clock for UTMI PLL */
+ setbits_le32(mpmu_regs-acgr, APB2_26M_EN | AP_26M);
+
+ /* USB Clock reset */
+ writel(USB_SPH_AXICLK_EN, apmu_regs-usbcrc);
+ writel(USB_SPH_AXICLK_EN | USB_SPH_AXI_RST, apmu_regs-usbcrc);
+
+ /* Initialize UTMI transceiver */
+ utmi_phy_init();
+}
diff --git a/drivers/usb/host/utmi-armada100.h
b/drivers/usb/host/utmi-armada100.h
new file mode 100644
index 000..dd0ccdb
--- /dev/null
+++ b/drivers/usb/host/utmi-armada100.h
@@ -0,0 +1,79 @@
+/*
+ * (C) Copyright 2012
+ * eInfochips Ltd. www.einfochips.com
+ * Written-by: Ajay Bhargav ajay.bhar...@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
