From e7e5af7df1f518610aca8fa29a2eb711eb2ed5b2 Mon Sep 17 00:00:00 2001 From: Igor Opaniuk Date: Mon, 16 Mar 2020 16:33:45 +0200 Subject: ARM: dts: colibri: introduce device trees with UHS-I support 1. Introduce dtsi with overlay configuration for enabling UHS-I for Colibri iMX6S/DL V1.1x re-design. 2. Introduce new dts for the Colibri iMX6S/DL V1.1x on Colibri Evaluation Carrier Board V3.x. However, disable 1.8V for the Colibri Evaluation Board since this carrier board has 3.3V pull-ups on. 3. Provide proper configuration for VGEN3, which allows that rail to be automatically switched to 1.8 volts for proper UHS-I operation mode. Signed-off-by: Igor Opaniuk Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6qdl-colibri.dtsi | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'arch/arm/boot/dts/imx6qdl-colibri.dtsi') diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi index 6e3c6b4925a7..240b86d2eb71 100644 --- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi +++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi @@ -193,7 +193,16 @@ regulator-always-on; }; - /* vgen3: unused */ + /* + * +V3.3_1.8_SD1 coming off VGEN3 and supplying + * the i.MX 6 NVCC_SD1. + */ + vgen3_reg: vgen3 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + regulator-boot-on; + regulator-always-on; + }; vgen4_reg: vgen4 { regulator-min-microvolt = <1800000>; -- cgit v1.2.3