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usb: sam0: use TRIM registers when available

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Newer SoCs like SAME54 provide dedicated registers to store
the USB trim configuration.

Use those registers if they are defined in ASF to access the
calibration data.

Signed-off-by: Benjamin Valentin <benpicco@googlemail.com>
This commit is contained in:
Benjamin Valentin 2019-11-06 21:26:33 +01:00 • committed by Carles Cufí
commit 2ffb8dd9f1
1 changed files with 12 additions and 0 deletions
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12
drivers/usb/device/usb_dc_sam0.c
View file

@ -132,6 +132,9 @@ static void usb_sam0_load_padcal(void)
u32_t pad_transp;
u32_t pad_trim;
#ifdef USB_FUSES_TRANSN_ADDR
pad_transn = *(uint32_t *)USB_FUSES_TRANSN_ADDR;
#else
pad_transn = (*((uint32_t *)(NVMCTRL_OTP4) +
(NVM_USB_PAD_TRANSN_POS / 32)) >>
(NVM_USB_PAD_TRANSN_POS % 32)) &
@ -140,9 +143,13 @@ static void usb_sam0_load_padcal(void)
if (pad_transn == 0x1F) {
pad_transn = 5U;
}
#endif
regs->PADCAL.bit.TRANSN = pad_transn;
#ifdef USB_FUSES_TRANSP_ADDR
pad_transp = *(uint32_t *)USB_FUSES_TRANSP_ADDR;
#else
pad_transp = (*((uint32_t *)(NVMCTRL_OTP4) +
(NVM_USB_PAD_TRANSP_POS / 32)) >>
(NVM_USB_PAD_TRANSP_POS % 32)) &
@ -151,9 +158,13 @@ static void usb_sam0_load_padcal(void)
if (pad_transp == 0x1F) {
pad_transp = 29U;
}
#endif
regs->PADCAL.bit.TRANSP = pad_transp;
#ifdef USB_FUSES_TRIM_ADDR
pad_trim = *(uint32_t *)USB_FUSES_TRIM_ADDR;
#else
pad_trim = (*((uint32_t *)(NVMCTRL_OTP4) +
(NVM_USB_PAD_TRIM_POS / 32)) >>
(NVM_USB_PAD_TRIM_POS % 32)) &
@ -162,6 +173,7 @@ static void usb_sam0_load_padcal(void)
if (pad_trim == 0x7) {
pad_trim = 3U;
}
#endif
regs->PADCAL.bit.TRIM = pad_trim;
}