From c0435ed04bd9fb264cb6284399556b11825e96e8 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Wed, 25 Sep 2024 00:08:23 +0200
Subject: [PATCH] arm: imx: Enable always-on regulators using board specific
 workaround on DHCOM SoM

U-Boot is currently unable to automatically enable regulators which
contain DT property regulator-always-on or regulator-boot-on. There
is an ongoing work to add this functionality to regulator core code,
but until the proper solution lands, add this awful workaround code
to force these regulators on. This is specifically needed to assure
the VIO regulator used to supply ethernet magnetics is enabled.

Signed-off-by: Marek Vasut <marex@denx.de>
---
 board/dhelectronics/dh_imx6/dh_imx6.c             | 3 +++
 board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/board/dhelectronics/dh_imx6/dh_imx6.c b/board/dhelectronics/dh_imx6/dh_imx6.c
index c8dd30dfeaf..ada44e01424 100644
--- a/board/dhelectronics/dh_imx6/dh_imx6.c
+++ b/board/dhelectronics/dh_imx6/dh_imx6.c
@@ -30,6 +30,7 @@
 #include <fuse.h>
 #include <i2c_eeprom.h>
 #include <mmc.h>
+#include <power/regulator.h>
 #include <usb.h>
 #include <linux/delay.h>
 #include <usb/ehci-ci.h>
@@ -127,6 +128,8 @@ int board_init(void)
 
 	setup_fec_clock();
 
+	regulators_enable_boot_on(_DEBUG);
+
 	return 0;
 }
 
diff --git a/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c b/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c
index c635735d89c..a389ab3c2d9 100644
--- a/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c
+++ b/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c
@@ -14,6 +14,7 @@
 #include <malloc.h>
 #include <net.h>
 #include <miiphy.h>
+#include <power/regulator.h>
 
 #include "lpddr4_timing.h"
 #include "../common/dh_common.h"
@@ -111,6 +112,8 @@ int dh_setup_mac_address(void)
 
 int board_init(void)
 {
+	regulators_enable_boot_on(_DEBUG);
+
 	return 0;
 }