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rp2040: Initial USB support

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Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2021-06-25 10:12:44 -04:00
parent 59fe878241
commit c5667193c9
4 changed files with 241 additions and 1 deletions
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3
src/rp2040/main.c
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@@ -131,9 +131,10 @@ clock_setup(void)
enable_pclock(RESETS_RESET_PLL_USB_BITS);
pll_setup(pll_usb_hw, 40, 40*FREQ_XOSC/FREQ_USB);
// Setup clk_peri and clk_adc
// Setup peripheral clocks
clk_aux_setup(clk_peri, CLOCKS_CLK_PERI_CTRL_AUXSRC_VALUE_CLK_SYS);
clk_aux_setup(clk_adc, CLOCKS_CLK_ADC_CTRL_AUXSRC_VALUE_CLKSRC_PLL_USB);
clk_aux_setup(clk_usb, CLOCKS_CLK_USB_CTRL_AUXSRC_VALUE_CLKSRC_PLL_USB);
// Enable watchdog tick (at 12Mhz)
cref->div = 1<<CLOCKS_CLK_REF_DIV_INT_LSB;