* [PATCH 6/7] Zedboard turn on LED on startup
@ 2020-04-02 8:22 Michael Graichen
0 siblings, 0 replies; only message in thread
From: Michael Graichen @ 2020-04-02 8:22 UTC (permalink / raw)
To: barebox
Turns on the LED on MIO7 on the Zedboard to have a signal
diff --git a/arch/arm/boards/avnet-zedboard/lowlevel.c b/arch/arm/boards/avnet-zedboard/lowlevel.c
index b8001fcf6..eb85df507 100644
--- a/arch/arm/boards/avnet-zedboard/lowlevel.c
+++ b/arch/arm/boards/avnet-zedboard/lowlevel.c
@@ -306,6 +306,16 @@ ENTRY_FUNCTION(start_avnet_zedboard, r0, r1, r2)
void *fdt = __dtb_zynq_zed_start + get_runtime_offset();
+ /* MIO_07 in GPIO Mode 3.3V VIO, can be uncomented because it is the default value */
+ writel(0x0000DF0D, ZYNQ_SLCR_UNLOCK);
+ writel(0x00000600, 0xF800071C );
+ writel(0x0000767B, ZYNQ_SLCR_LOCK);
+
+ /* turns on the LED MIO_07 */
+ writel((1<<7), 0xe000a204 ); // Direction
+ writel((1<<7), 0xe000a208 ); // Output enable
+ writel((1<<7), 0xe000a040 ); // DATA Register
+
arm_cpu_lowlevel_init();
zynq_cpu_lowlevel_init();
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2020-04-02 8:23 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-02 8:22 [PATCH 6/7] Zedboard turn on LED on startup Michael Graichen
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox