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usb: phy: msm: Select secondary PHY via TCSR

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Select the secondary PHY using the TCSR register, if phy-num=1
in the DTS (or phy_number is set in the platform data).  The
SOC has 2 PHYs which can be used with the OTG port, and this
code allows configuring the correct one.

Note: This resolves the problem I was seeing where I couldn't
get the USB driver working at all on a dragonboard, from cold
boot.  This patch depends on patch 5/14 from Ivan's msm USB
patch set.  It does not use DT for the register address, as
there's no evidence that this address changes between SoC
versions.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Tim Bird
2014-04-28 16:34:20 +03:00
committed by Felipe Balbi
parent 9f27984b9e
commit 30bf8667ce
2 changed files with 17 additions and 0 deletions
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3
include/linux/usb/msm_hsusb_hw.h
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@@ -16,6 +16,9 @@
#ifndef __LINUX_USB_GADGET_MSM72K_UDC_H__
#define __LINUX_USB_GADGET_MSM72K_UDC_H__
/* USB phy selector - in TCSR address range */
#define USB2_PHY_SEL 0xfd4ab000
#define USB_AHBBURST (MSM_USB_BASE + 0x0090)
#define USB_AHBMODE (MSM_USB_BASE + 0x0098)
#define USB_CAPLENGTH (MSM_USB_BASE + 0x0100) /* 8 bit */