diff options
Diffstat (limited to 'board/toradex/verdin-am62/verdin-am62.c')
| -rw-r--r-- | board/toradex/verdin-am62/verdin-am62.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/board/toradex/verdin-am62/verdin-am62.c b/board/toradex/verdin-am62/verdin-am62.c index f1c0614e07..e718eb0030 100644 --- a/board/toradex/verdin-am62/verdin-am62.c +++ b/board/toradex/verdin-am62/verdin-am62.c @@ -226,6 +226,18 @@ void spl_board_init(void) writel(val, CTRLMMR_USB1_PHY_CTRL); /* We use the 32k FOUT from the Epson RX8130CE RTC chip */ + /* In WKUP_LFOSC0 clear the power down bit and set the bypass bit + * The bypass bit is required as we provide a CMOS clock signal and + * the power down seems to be required also in the bypass case + * despite of the datasheet stating otherwise + */ + /* Compare with the AM62 datasheet, + * Table 7-21. LFXOSC Modes of Operation + */ + val = readl(MCU_CTRL_LFXOSC_CTRL); + val &= ~MCU_CTRL_LFXOSC_32K_DISABLE_VAL; + val |= MCU_CTRL_LFXOSC_32K_BYPASS_VAL; + writel(val, MCU_CTRL_LFXOSC_CTRL); /* Make sure to mux up to take the SoC 32k from the LFOSC input */ writel(MCU_CTRL_DEVICE_CLKOUT_LFOSC_SELECT_VAL, MCU_CTRL_DEVICE_CLKOUT_32K_CTRL); |