X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=board%2Ftoradex%2Fapalis-tk1%2Fas3722_init.c;h=68169f55480860b63cd9cb943897cf8ab09c0f9a;hb=c05ed00afb95fa5237f16962fccf5810437317bf;hp=4917034e1af1ab720b05e32d30b881f1078a225b;hpb=04735a8fc45ba7c9f5b17d4837a0c649087b29e1;p=oweals%2Fu-boot.git

diff --git a/board/toradex/apalis-tk1/as3722_init.c b/board/toradex/apalis-tk1/as3722_init.c
index 4917034e1a..68169f5548 100644
--- a/board/toradex/apalis-tk1/as3722_init.c
+++ b/board/toradex/apalis-tk1/as3722_init.c
@@ -1,12 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2012-2016 Toradex, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
+#include <log.h>
 #include <asm/io.h>
 #include <asm/arch-tegra/tegra_i2c.h>
+#include <linux/delay.h>
 #include "as3722_init.h"
 
 /* AS3722-PMIC-specific early init code - get CPU rails up, etc */
@@ -44,6 +45,29 @@ void pmic_enable_cpu_vdd(void)
 	udelay(10 * 1000);
 #endif
 
+	/*
+	 * Make sure all non-fused regulators are down.
+	 * That way we're in known state after software reboot from linux
+	 */
+	tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
+	tegra_i2c_ll_write_data(0x0003, I2C_SEND_2_BYTES);
+	udelay(10 * 1000);
+	tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
+	tegra_i2c_ll_write_data(0x0004, I2C_SEND_2_BYTES);
+	udelay(10 * 1000);
+	tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
+	tegra_i2c_ll_write_data(0x001b, I2C_SEND_2_BYTES);
+	udelay(10 * 1000);
+	tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
+	tegra_i2c_ll_write_data(0x0014, I2C_SEND_2_BYTES);
+	udelay(10 * 1000);
+	tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
+	tegra_i2c_ll_write_data(0x001a, I2C_SEND_2_BYTES);
+	udelay(10 * 1000);
+	tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
+	tegra_i2c_ll_write_data(0x0019, I2C_SEND_2_BYTES);
+	udelay(10 * 1000);
+
 	debug("%s: Setting VDD_CPU to 1.0V via AS3722 reg 0/4D\n", __func__);
 	/*
 	 * Bring up VDD_CPU via the AS3722 PMIC on the PWR I2C bus.