* PPC405EP: Add CFG_GPIO0_OR, CFG_GPIO0_ODR to setup GPIO completely.
- Add configuration of Open Drain GPIO Output selection
- Add configuration of initial value of GPIO output pins
Patch by Tolunay Orkun, 07 Apr 2006
diff --git a/cpu/ppc4xx/cpu_init.c b/cpu/ppc4xx/cpu_init.c
index b27567f..def46f1 100644
--- a/cpu/ppc4xx/cpu_init.c
+++ b/cpu/ppc4xx/cpu_init.c
@@ -226,13 +226,19 @@
/*
* GPIO0 setup (select GPIO or alternate function)
*/
- out32(GPIO0_OSRH, CFG_GPIO0_OSRH); /* output select */
+#if defined(CFG_GPIO0_OR)
+ out32(GPIO0_OR, CFG_GPIO0_OR); /* set initial state of output pins */
+#endif
+#if defined(CFG_GPIO0_ODR)
+ out32(GPIO0_ODR, CFG_GPIO0_ODR); /* open-drain select */
+#endif
+ out32(GPIO0_OSRH, CFG_GPIO0_OSRH); /* output select */
out32(GPIO0_OSRL, CFG_GPIO0_OSRL);
- out32(GPIO0_ISR1H, CFG_GPIO0_ISR1H); /* input select */
+ out32(GPIO0_ISR1H, CFG_GPIO0_ISR1H); /* input select */
out32(GPIO0_ISR1L, CFG_GPIO0_ISR1L);
- out32(GPIO0_TSRH, CFG_GPIO0_TSRH); /* three-state select */
+ out32(GPIO0_TSRH, CFG_GPIO0_TSRH); /* three-state select */
out32(GPIO0_TSRL, CFG_GPIO0_TSRL);
- out32(GPIO0_TCR, CFG_GPIO0_TCR); /* enable output driver for outputs */
+ out32(GPIO0_TCR, CFG_GPIO0_TCR); /* enable output driver for outputs */
/*
* Set EMAC noise filter bits