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/*
* Copyright 2017 Scalys B.V.
* opensource@scalys.com
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <i2c.h>
#include <asm/io.h>
#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
#define I2C_ADDRESS_USB_HUB 0x60
#define MAX_I2C_ATTEMPTS 10
#define HX3_SETTINGS_SIZE 192
/* Cypress HX3 hub settings blob */
const uint8_t hx3_settings[5 + HX3_SETTINGS_SIZE] = {
'C', 'Y', /* Cypress magic signature */
0x30, /* I2C speed : 100kHz */
0xd4, /* Image type: Only settings, no firmware */
HX3_SETTINGS_SIZE, /* payload size (192) */
0xb4, 0x04, /* VID */
0x04, 0x65, /* PID */
0x0a, 0x50, /* DID */
0x00, /* Reserved */
0x0f, /* 4 SuperSpeed ports, no shared link */
0x32, /* bPwrOn2PwrGood : 100 ms */
0x7f, /* 4 Downstream ports : DS4 is non-removable (MCU) */
0xe1, /* LEDs disabled, Ganged power switching */
0xa0, /* suspend indicator disabled, power switch control is active high */
0x04, /* BC v1.2 disabled, apple charging 1A, ghost charging disabled */
0x00, /* port charging, cdp & dcp disabled */
0xd8, /* US is embedded port, overcurrent input is active high */
0x00, /* reserved */
0x08, /* USB String descriptors enabled */
0x00, 0x00,
0x12, 0x00, 0x2c,
0x66, 0x66, /* USB3.0 TX driver de-emphasis */
0x69, 0x29, 0x29, 0x29, 0x29, /* TX amplitude */
0x00, /* Reserved */
0x06, 0x65, /* USB 2.0 PID */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Reserved */
0x04, 0x03, 0x09, 0x04, /* LangID = 0x0409 US English */
0x18, 0x03, /* Manufacturer string descriptor */
0x32, 0x00, 0x30, 0x00, 0x31, 0x00, 0x37, 0x00,
0x20, 0x00, 0x53, 0x00, 0x63, 0x00, 0x61, 0x00,
0x6c, 0x00, 0x79, 0x00, 0x73, 0x00,
0x2c, 0x03, /* Product string descriptor */
0x47, 0x00, 0x72, 0x00, 0x61, 0x00, 0x70, 0x00,
0x65, 0x00, 0x62, 0x00, 0x6f, 0x00, 0x61, 0x00,
0x72, 0x00, 0x64, 0x00, 0x20, 0x00, 0x43, 0x00,
0x59, 0x00, 0x2d, 0x00, 0x48, 0x00, 0x58, 0x00,
0x33, 0x00, 0x20, 0x00, 0x48, 0x00, 0x55, 0x00,
0x42, 0x00,
0x1a, 0x03, /* Serial string descriptor */
0x47, 0x00, 0x72, 0x00, 0x61, 0x00, 0x70, 0x00,
0x65, 0x00, 0x62, 0x00, 0x6f, 0x00, 0x61, 0x00,
0x72, 0x00, 0x64, 0x00, 0x20, 0x00, 0x31, 0x00,
0x39, 0x00, 0x41, 0x00,
0x00
};
int usb_hx3_hub_init(void) {
int length, index = 0, i2c_attempts = 0;
const int settings_size = sizeof(hx3_settings);
uint8_t *data = (uint8_t *)hx3_settings;
/*
* Configure USB hub slave
*
* The Hx3 starts in an i2c slave bootloader mode until sufficient and correct data is written to it over I2C.
* If transferred data is incorrect then the device will hang until it has been reset.
*/
puts("USB: configuring hub....");
while(index <= settings_size - 1){
length = MIN(64, (settings_size - index));
if(i2c_write(I2C_ADDRESS_USB_HUB, index, 2, data, length)) {
if(i2c_attempts < 1)
printf("\nWARNING: I2C error during configuring USB hub slave. retrying...\n");
if(++i2c_attempts >= MAX_I2C_ATTEMPTS){
printf("ERROR: Maximum USB hub configuration attempts reached. Exiting now\n");
return 1;
}
continue;
}
i2c_attempts = 0; /* reset error count */
index += length;
data += length;
}
puts("Done!\n");
return 0;
}
int usb_hx3_hub_reset(void) {
/* USB hub cannot be reset in software without resetting the ls1012a */
return 1;
}
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