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Workaround new USB using SPMI instead of I2C #365

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merged 1 commit into from
Dec 3, 2023
Merged

Workaround new USB using SPMI instead of I2C #365

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18 changes: 18 additions & 0 deletions src/usb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
#include "iodev.h"
#include "malloc.h"
#include "pmgr.h"
#include "string.h"
#include "tps6598x.h"
#include "types.h"
#include "usb_dwc3.h"
Expand Down Expand Up @@ -228,13 +229,30 @@ static tps6598x_dev_t *hpm_init(i2c_dev_t *i2c, const char *hpm_path)
return tps;
}

void usb_spmi_init(void)
{
for (int idx = 0; idx < USB_IODEV_COUNT; ++idx)
usb_phy_bringup(idx); /* Fails on missing devices, just continue */

usb_is_initialized = true;
}

void usb_init(void)
{
char hpm_path[sizeof(FMT_HPM_PATH)];

if (usb_is_initialized)
return;

/*
* M3 models do not use i2c, but instead SPMI with a new controller.
* We can get USB going for now by just bringing up the phys.
*/
if (adt_path_offset(adt, "/arm-io/nub-spmi-a0/hpm0") != 0) {
usb_spmi_init();
return;
}

i2c_dev_t *i2c = i2c_init("/arm-io/i2c0");
if (!i2c) {
printf("usb: i2c init failed.\n");
Expand Down
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