Make sure the processor does something sensible when the power disappears.
Signed-off-by: Keith Packard <keithp@keithp.com>
(1 << LPC_SCB_SYSAHBCLKCTRL_GPIO) |
(1 << LPC_SCB_SYSAHBCLKCTRL_IOCON));
(1 << LPC_SCB_SYSAHBCLKCTRL_GPIO) |
(1 << LPC_SCB_SYSAHBCLKCTRL_IOCON));
+ /* Enable the brown-out detection at the highest voltage to
+ * make sure the flash part remains happy
+ */
+
+ lpc_scb.pdruncfg &= ~(1 << LPC_SCB_PDRUNCFG_BOD_PD);
+ lpc_scb.bodctrl = ((LPC_SCB_BOD_BODRSTLEV_2_63 << LPC_SCB_BOD_BODRSTLEV) |
+ (LPC_SCB_BOD_BODINTVAL_RESERVED << LPC_SCB_BOD_BODINTVAL) |
+ (1 << LPC_SCB_BOD_BODRSTENA));
+
/* Turn the IRC clock back on */
lpc_scb.pdruncfg &= ~(1 << LPC_SCB_PDRUNCFG_IRC_PD);
ao_clock_delay();
/* Turn the IRC clock back on */
lpc_scb.pdruncfg &= ~(1 << LPC_SCB_PDRUNCFG_IRC_PD);
ao_clock_delay();
/* Power down everything we don't need */
lpc_scb.pdruncfg = ((1 << LPC_SCB_PDRUNCFG_IRCOUT_PD) |
(1 << LPC_SCB_PDRUNCFG_IRC_PD) |
/* Power down everything we don't need */
lpc_scb.pdruncfg = ((1 << LPC_SCB_PDRUNCFG_IRCOUT_PD) |
(1 << LPC_SCB_PDRUNCFG_IRC_PD) |
- (1 << LPC_SCB_PDRUNCFG_BOD_PD) |
+ (0 << LPC_SCB_PDRUNCFG_BOD_PD) |
(1 << LPC_SCB_PDRUNCFG_ADC_PD) |
(1 << LPC_SCB_PDRUNCFG_WDTOSC_PD) |
(1 << LPC_SCB_PDRUNCFG_USBPLL_PD) |
(1 << LPC_SCB_PDRUNCFG_ADC_PD) |
(1 << LPC_SCB_PDRUNCFG_WDTOSC_PD) |
(1 << LPC_SCB_PDRUNCFG_USBPLL_PD) |
#define LPC_SCB_CLKOUTUEN_ENA 0
#define LPC_SCB_CLKOUTUEN_ENA 0
+#define LPC_SCB_BOD_BODRSTLEV 0
+# define LPC_SCB_BOD_BODRSTLEV_1_46 0
+# define LPC_SCB_BOD_BODRSTLEV_2_06 1
+# define LPC_SCB_BOD_BODRSTLEV_2_35 2
+# define LPC_SCB_BOD_BODRSTLEV_2_63 3
+#define LPC_SCB_BOD_BODINTVAL 2
+# define LPC_SCB_BOD_BODINTVAL_RESERVED 0
+# define LPC_SCB_BOD_BODINTVAL_2_22 1
+# define LPC_SCB_BOD_BODINTVAL_2_52 2
+# define LPC_SCB_BOD_BODINTVAL_2_80 3
+#define LPC_SCB_BOD_BODRSTENA 4
+
#define LPC_SCB_PDRUNCFG_IRCOUT_PD 0
#define LPC_SCB_PDRUNCFG_IRC_PD 1
#define LPC_SCB_PDRUNCFG_FLASH_PD 2
#define LPC_SCB_PDRUNCFG_IRCOUT_PD 0
#define LPC_SCB_PDRUNCFG_IRC_PD 1
#define LPC_SCB_PDRUNCFG_FLASH_PD 2