[PATCH] ARM: dts: stm32: Fix AV96 and DHCOR split

[Marek Vasut]

The commit 132e5b68986d ("ARM: dts: stm32: Split AV96 into DHCOR SoM
and AV96 board") was not applied correctly and in full, and omitted
an important split of the SoM into 3V3 and 1V8 options. The Avenger96
board is based on the 1V8 IO option of the DHCOR SoM, however this is
an optional modification of the 3V3 IO DHCOR SoM with extra on-SoM
regulator to cater for the 96boards 1V8 IO requirements.

Reinstate the split between the 1V8 and 3V3 IO variants.

Fixes: 132e5b68986d ("ARM: dts: stm32: Split AV96 into DHCOR SoM and AV96 board")
Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam at linaro.org>
Cc: Patrick Delaunay <patrick.delaunay at st.com>
Cc: Patrice Chotard <patrice.chotard at st.com>
---
 arch/arm/dts/stm32mp15xx-dhcor-avenger96.dts  |  2 +-
 arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi     | 24 +++++++++++++++++++
 ...hcor.dtsi => stm32mp15xx-dhcor-io3v3.dtsi} | 13 +---------
 3 files changed, 26 insertions(+), 13 deletions(-)
 create mode 100644 arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi
 rename arch/arm/dts/{stm32mp15xx-dhcor.dtsi => stm32mp15xx-dhcor-io3v3.dtsi} (94%)

diff --git a/arch/arm/dts/stm32mp15xx-dhcor-avenger96.dts b/arch/arm/dts/stm32mp15xx-dhcor-avenger96.dts
index a600677563..1b0579c8ab 100644
--- a/arch/arm/dts/stm32mp15xx-dhcor-avenger96.dts
+++ b/arch/arm/dts/stm32mp15xx-dhcor-avenger96.dts
@@ -7,7 +7,7 @@
 
 /dts-v1/;
 
-#include "stm32mp15xx-dhcor.dtsi"
+#include "stm32mp15xx-dhcor-io1v8.dtsi"
 #include "stm32mp15xx-dhcor-avenger96-u-boot.dtsi"
 
 / {
diff --git a/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi
new file mode 100644
index 0000000000..75435424d6
--- /dev/null
+++ b/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+/*
+ * Copyright (C) 2020 Marek Vasut <marex at denx.de>
+ */
+
+#include "stm32mp15xx-dhcor-io3v3.dtsi"
+
+/ {
+	/* Enpirion EP3A8LQI U2 on the 1V8 IO DHCOR */
+	vdd_io: regulator-buck-io {
+		compatible = "regulator-fixed";
+		regulator-name = "buck-io";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vdd>;
+	};
+};
+
+&pwr_regulators {
+	vdd-supply = <&vdd_io>;
+	vdd_3v3_usbfs-supply = <&vdd_usb>;
+};
diff --git a/arch/arm/dts/stm32mp15xx-dhcor.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-io3v3.dtsi
similarity index 94%
rename from arch/arm/dts/stm32mp15xx-dhcor.dtsi
rename to arch/arm/dts/stm32mp15xx-dhcor-io3v3.dtsi
index 97d370e119..248fc455e3 100644
--- a/arch/arm/dts/stm32mp15xx-dhcor.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcor-io3v3.dtsi
@@ -21,17 +21,6 @@
 		device_type = "memory";
 		reg = <0xc0000000 0x40000000>;
 	};
-
-	/* Enpirion EP3A8LQI U2 on the DHCOR */
-	vdd_io: regulator-buck-io {
-		compatible = "regulator-fixed";
-		regulator-name = "buck-io";
-		regulator-min-microvolt = <1800000>;
-		regulator-max-microvolt = <1800000>;
-		regulator-always-on;
-		regulator-boot-on;
-		vin-supply = <&vdd>;
-	};
 };
 
 &i2c4 {
@@ -200,7 +189,7 @@
 };
 
 &pwr_regulators {
-	vdd-supply = <&vdd_io>;
+	vdd-supply = <&vdd>;
 	vdd_3v3_usbfs-supply = <&vdd_usb>;
 };
 
-- 
2.25.1