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cpu/saml21: add clock configuration for usbdev

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Co-authored-by: dylad <dylan.laduranty@mesotic.com>
This commit is contained in:
Antonio Galea 2019-08-29 12:30:42 +02:00
parent 1ad2d07181
commit 3076ee837d
2 changed files with 11 additions and 2 deletions
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12
cpu/saml21/cpu.c
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@ -82,8 +82,14 @@ static void _xosc32k_setup(void)
void sam0_gclk_enable(uint8_t id)
{
(void) id;
/* clocks are always running */
switch(id) {
case SAM0_GCLK_48MHZ:
_gclk_setup(SAM0_GCLK_48MHZ, GCLK_GENCTRL_GENEN |
GCLK_GENCTRL_SRC_DFLL48M);
break;
default:
break;
}
}
uint32_t sam0_gclk_freq(uint8_t id)
@ -95,6 +101,8 @@ uint32_t sam0_gclk_freq(uint8_t id)
return 8000000;
case SAM0_GCLK_32KHZ:
return 32768;
case SAM0_GCLK_48MHZ:
return 48000000;
default:
return 0;
}

1
cpu/saml21/include/periph_cpu.h
View File

@ -46,6 +46,7 @@ enum {
SAM0_GCLK_MAIN = 0, /**< Main clock */
SAM0_GCLK_8MHZ = 1, /**< 8MHz clock */
SAM0_GCLK_32KHZ = 2, /**< 32 kHz clock */
SAM0_GCLK_48MHZ = 3, /**< 48MHz clock */
};
/** @} */