Cypress C67X00 driver question

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

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

I have a FPGA design with a Cypress C67300 which has no eeprom or cpld, so it just comes up blank in coprocessor mode.

I believe I need to 'program' the chip and kick it before the driver loads is that right?
Has anyone ever done this before?  
The Cypress docs do not even begin to provide a simple example of the minimum registers to set
before the usb will 'work'.  I just need 2 hosts.

Thanks,

Joe Robertson
x8259
Joseph.Robertson@sanmina-sci.com


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"RJM" == Robertson, Joseph M [off-list ref] 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