Best regards,
Peter Chen
> Subject: Re: [PATCH][v2]fsl/usb:Add controller version based ULPI and
> UTMI phy support
>
> On Mon, Jan 30, 2012 at 12:36:12PM +0530, Ramneek Mehresh wrote:
> > Add support for ULPI and UTMI PHYs based on usb controller version
> > info read from device-tree
> >
> > Example of USB Controller versioning info:
> > Version 1.2 and below : MPC8536, MPC8315, etc Version 1.6 : P1020,
> > P1010, P2020, etc Version 2.2 : PSC9131, PSC9132, P3060, etc
> >
> > Signed-off-by: Ramneek Mehresh <ramneek.mehresh@xxxxxxxxxxxxx>
> > ---
> > Changes for v2:
> > - Incorporated Greg's comment
> > - moved fsl_usb.h from drivers/usb/misc
> > to drivers/usb/host/fsl/
> >
> > drivers/usb/gadget/fsl_udc_core.c | 25 ++++++++++++++-
> > drivers/usb/gadget/fsl_usb2_udc.h | 13 ++++++++
> > drivers/usb/host/ehci-fsl.c | 35 +++++++++++++++++----
> > drivers/usb/host/ehci-fsl.h | 15 ++++++++-
> > drivers/usb/host/fsl/fsl_usb.h | 61
> +++++++++++++++++++++++++++++++++++++
> > 5 files changed, 141 insertions(+), 8 deletions(-) create mode
> > 100644 drivers/usb/host/fsl/fsl_usb.h
> >
> > diff --git a/drivers/usb/gadget/fsl_udc_core.c
> > b/drivers/usb/gadget/fsl_udc_core.c
> > index d7ea6c0..3c28887 100644
> > --- a/drivers/usb/gadget/fsl_udc_core.c
> > +++ b/drivers/usb/gadget/fsl_udc_core.c
> Hi ramneek, Freescale i.MX SoCs also use fsl_udc_core.c for device
> function.
> Can you change the patch and let your added code can be not called by
> i.mx SoC?
> Host is ok, as it uses ehci-mxc.c.
>
> [Ramneek]: Hi Peter, the basic thinking behind this patch is that fsl usb
> driver should not be concerned with the SOC. It should only be concerned
> with controller/IP version. This is done to prevent driver code
> contamination with SOC based code/macros. Moving forward, this code
> change will ensure easy code maintainability for fsl usb driver ...
>
> To make this code work for all fsl qoriq and older plarforms, I sent a
> patch for "controller version" information inside all platform device-
> trees. I would recommend the same for i.mx. please let me know if you
> need help for including controller version info for i.mx platforms
>
You mean for all controllers information for i.mx at device-tree file?
I have cc-ed i.mx device-tree guys, I don't know the progress for i.mx
device tree.
> > @@ -1,5 +1,5 @@
> > /*
> > - * Copyright (C) 2004-2007,2011 Freescale Semiconductor, Inc.
> > + * Copyright (C) 2004-2007,2011-2012 Freescale Semiconductor, Inc.
> > * All rights reserved.
> > *
> > * Author: Li Yang <leoli@xxxxxxxxxxxxx> @@ -48,6 +48,7 @@ #include
> > <asm/dma.h>
> >
> > #include "fsl_usb2_udc.h"
> > +#include "../host/fsl/fsl_usb.h"
> >
> > #define DRIVER_DESC "Freescale High-Speed USB SOC Device Controller
> driver"
> > #define DRIVER_AUTHOR "Li Yang/Jiang Bo"
> > @@ -245,23 +246,45 @@ static int dr_controller_setup(struct fsl_udc
> > *udc) {
> > unsigned int tmp, portctrl, ep_num;
> > unsigned int max_no_of_ep;
> > + int contr_ver = usb_get_ver_info();
> > #ifndef CONFIG_ARCH_MXC
> > unsigned int ctrl;
> > #endif
> > unsigned long timeout;
> > #define FSL_UDC_RESET_TIMEOUT 1000
> >
> > + if (contr_ver < 0) {
> > + printk(KERN_WARNING"fsl_usb: Could not get controller"
> > + "version\n");
> > + return -ENODEV;
> > + }
> > +
> > /* Config PHY interface */
> > portctrl = fsl_readl(&dr_regs->portsc1);
> > portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH);
> > switch (udc->phy_mode) {
> > case FSL_USB2_PHY_ULPI:
> > + if (contr_ver) {
> > + /* controller version 1.6 or above */
> > + ctrl = __raw_readl(&usb_sys_regs->control);
> > + ctrl &= ~USB_CTRL_UTMI_PHY_EN;
> > + ctrl |= USB_CTRL_USB_EN;
> > + __raw_writel(ctrl, &usb_sys_regs->control);
> > + }
> > portctrl |= PORTSCX_PTS_ULPI;
> > break;
> > case FSL_USB2_PHY_UTMI_WIDE:
> > portctrl |= PORTSCX_PTW_16BIT;
> > /* fall through */
> > case FSL_USB2_PHY_UTMI:
> > + if (contr_ver) {
> > + /* controller version 1.6 or above */
> > + ctrl = __raw_readl(&usb_sys_regs->control);
> > + ctrl |= (USB_CTRL_UTMI_PHY_EN | USB_CTRL_USB_EN);
> > + __raw_writel(ctrl, &usb_sys_regs->control);
> > + mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to
> > + become stable - 10ms*/
> > + }
> > portctrl |= PORTSCX_PTS_UTMI;
> > break;
> > case FSL_USB2_PHY_SERIAL:
>
> --
>
> Best Regards,
> Peter Chen
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