From patchwork Tue Mar 31 00:48:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 244623 List-Id: U-Boot discussion From: marex at denx.de (Marek Vasut) Date: Tue, 31 Mar 2020 02:48:49 +0200 Subject: [PATCH V2 12/14] ARM: dts: stm32: Repair PMIC configuration on AV96 In-Reply-To: <20200331004851.282583-1-marex@denx.de> References: <20200331004851.282583-1-marex@denx.de> Message-ID: <20200331004851.282583-13-marex@denx.de> 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. Signed-off-by: Marek Vasut Cc: Patrick Delaunay Cc: Patrice Chotard Reviewed-by: Patrice Chotard --- V2: - Model the Enpirion EP53A8LQI on the DHCOR SoM as a fixed regulator - Adjust the PMIC voltages further --- 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 7a4b6e6a2c..4fa20bc31d 100644 --- a/arch/arm/dts/stm32mp157a-avenger96.dts +++ b/arch/arm/dts/stm32mp157a-avenger96.dts @@ -91,6 +91,17 @@ 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 { @@ -167,7 +178,7 @@ vddcore: buck1 { regulator-name = "vddcore"; - regulator-min-microvolt = <1200000>; + regulator-min-microvolt = <800000>; regulator-max-microvolt = <1350000>; regulator-always-on; regulator-initial-mode = <0>; @@ -185,8 +196,8 @@ 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>; @@ -268,6 +279,7 @@ regulator-name = "vbus_otg"; interrupts = ; interrupt-parent = <&pmic>; + regulator-active-discharge = <1>; }; vbus_sw: pwr_sw2 { @@ -304,7 +316,7 @@ }; &pwr_regulators { - vdd-supply = <&vdd>; + vdd-supply = <&vdd_io>; vdd_3v3_usbfs-supply = <&vdd_usb>; };