FW: Cypress C67X00 driver question

[Robertson, Joseph M.]

Sorry, replied to wrong address...

-----Original Message-----
From: Robertson, Joseph M.
Sent: Wed 8/15/2007 2:18 PM
To: Peter Korsgaard
Subject: RE: Cypress C67X00 driver question
 
Hi,

Ok call me dense, but I still get a problem.  
I put some messages in the driver.  I see the c67x00_drv init, and also udc_init.
But no hdc init and no probing.  And my ports are not powered.
I built the system to use c67x00_hdc, and I want 2 hosts enabled.

RE: The CYPRESS C67300 and ROM.   By the docs, this thing comes up dead.  It comes up HPI, co-processor mode and waits.
All the defaut values are 0 = disabled, off, etc.

Actually I have to get my hardware guys to double-check that, and also my port wiring, but thats another story.

Where does 'platform_device c67x00' go?  That is, should it be sent/used by some init function?  All I could find was c67x00_sie?

Thanks again.

Joe Robertson
Joseph.Robertson at sanmina-sci.com



-----Original Message-----
From: linuxppc-embedded-bounces+joseph.robertson=sanmina-sci.com at ozlabs.org on behalf of Peter Korsgaard
Sent: Thu 8/9/2007 2:08 AM
To: linuxppc-embedded at ozlabs.org
Subject: Re: Cypress C67X00 driver question
 
>>>>> "RJM" == Robertson, Joseph M <joseph.robertson at sanmina-sci.com> writes:

Hi,

RJM> Hi all, First off big thanks to the guys working on the Cypress
RJM> USB C67X00 driver!  Without them I would not even be this far.

You're welcome.

RJM> But my question for them is: How are you guys initializing the
RJM> Cypress chip?  It looks like the driver is expecting the cypress
RJM> to be programmed and ready.

No, you don't need to program anything. The driver only uses he
Cypress BIOS programmed in ROM in the chip.

You just need to register a struct platform_device in your board code
with the base address, IRQ and port configuration - Something like:

#include <linux/usb/c67x00.h

..

static struct resource c67x00_resources[] = {
        [0] = {
                .start  = 0x84000000,
                .end    = 0x8400000f,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = 3,
                .end    = 3,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct c67x00_platform_data c67x00_data = {
        .sie_config             = C67X00_SIE1_HOST | C67X00_SIE2_HOST,
        .hpi_regstep            = 0x02,
};

static struct platform_device c67x00 = {
        .name                   = "c67x00",
        .id                     = 0,
        .num_resources          = ARRAY_SIZE(c67x00_resources),
        .resource               = c67x00_resources,
        .dev.platform_data      = &c67x00_data,
};

-- 
Bye, Peter Korsgaard
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