From 2f3c4b8a0f303edbea9fc112a49e546cf03776b0 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Tue, 31 Mar 2020 19:51:34 +0200
Subject: [PATCH] ARM: dts: stm32: Repair PMIC configuration on AV96
The core and vdd PMIC buck regulators were misconfigured, which caused
instability of the board and malfunction of high-speed interfaces, like
the RGMII. Configure the PMIC correctly to repair these problems. Also,
model the missing Enpirion EP53A8LQI on the DHCOR SoM as a fixed regulator.
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
---
arch/arm/dts/stm32mp157a-avenger96.dts | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/arch/arm/dts/stm32mp157a-avenger96.dts b/arch/arm/dts/stm32mp157a-avenger96.dts
index 27d407a867..1f32395e71 100644
--- a/arch/arm/dts/stm32mp157a-avenger96.dts
+++ b/arch/arm/dts/stm32mp157a-avenger96.dts
@@ -92,6 +92,17 @@
states = <1800000 0x1>,
<2900000 0x0>;
};
+
+ /* 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>;
+ };
};
ðernet0 {
@@ -168,7 +179,7 @@
vddcore: buck1 {
regulator-name = "vddcore";
- regulator-min-microvolt = <1200000>;
+ regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1350000>;
regulator-always-on;
regulator-initial-mode = <0>;
@@ -186,8 +197,8 @@
vdd: buck3 {
regulator-name = "vdd";
- regulator-min-microvolt = <3300000>;
- regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <2900000>;
+ regulator-max-microvolt = <2900000>;
regulator-always-on;
st,mask_reset;
regulator-initial-mode = <0>;
@@ -269,6 +280,7 @@
regulator-name = "vbus_otg";
interrupts = <IT_OCP_OTG 0>;
interrupt-parent = <&pmic>;
+ regulator-active-discharge = <1>;
};
vbus_sw: pwr_sw2 {
@@ -305,7 +317,7 @@
};
&pwr_regulators {
- vdd-supply = <&vdd>;
+ vdd-supply = <&vdd_io>;
vdd_3v3_usbfs-supply = <&vdd_usb>;
};
--
2.39.5