# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1558823751 0
# Node ID a04a145098f1f776fc072ed8fa25a5b41fc9bf25
# Parent  44a1de4264d88b7f7e03844077bcac14e8b44fbf
target-utils: poweroff command does VRPCAUX cleanup for nTESTRESET

diff -r 44a1de4264d8 -r a04a145098f1 target-utils/libbase/abbdrv.c
--- a/target-utils/libbase/abbdrv.c	Sat May 25 22:20:34 2019 +0000
+++ b/target-utils/libbase/abbdrv.c	Sat May 25 22:35:51 2019 +0000
@@ -115,8 +115,16 @@
 abb_power_off()
 {
 	abb_init();
+	/*
+	 * If we booted via nTESTRESET, we need to clean up some state
+	 * in a secret undocumented Iota register before we do the DEVOFF,
+	 * otherwise subsequent switch-on via regular PWON button
+	 * won't work correctly.
+	 */
+	abb_unlock_page2();
+	abb_reg_write(VRPCAUX, 0x07);
 	serial_flush();
-	abb_reg_write(VRPCDEV, 0x01);
+	abb_reg_write(VRPCDEV, 0x01);	/* DEVOFF */
 	/*
 	 * TWL3025 datasheet seems to indicate that the time for the DEVOFF
 	 * command to take effect is 5 cycles of the 32.768 kHz clock.