Hi, I’m migrating a device from Yocto thud to scarthgap and moving from a custom 4.1 kernel (fmntf/linux_kernel 4.1.15_2.x-udoo) to linux-fslc-imx 6.6. Hardware is Udooneo Extended (iMX6SoloX) with the stock 7" LVDS panel (UMSH-8596MD-20T w/ DS90CF364 + ST1332 touch). Goal: run X11 with etnaviv (hardware accelerate) because the newer imx-viv-gpu doesn’t support X11 for our Electron apps. What works: Screen backlight and splash are visible during early boot. Touch works. Problem: At a certain point during boot the LVDS image gets heavy tearing/grey lines. X starts but the same tearing appears. Looks like a mode/driver handover problem. What I’m attaching (below): current device-tree fragment (imx6sx-udoo-neo-lvds7.dtsi). some useful logs and outputs I captured (dmesg, Xorg log, /dev/dri listing). Current device-tree fragment (imx6sx-udoo-neo-lvds7.dtsi) which is mostly the same as the one from kernel 4.1: Code: / { reg_lcd_pwr: regulator-lcdpwr { compatible = "regulator-fixed"; regulator-name = "LCD POWER"; gpio = <&gpio4 27 GPIO_ACTIVE_LOW>; enable-active-high; regulator-boot-on; regulator-always-on; status = "okay"; }; backlight_regulator: regulator-backlight { compatible = "regulator-fixed"; regulator-name = "LCD BACKLIGHT BL_ON"; gpio = <&gpio6 3 GPIO_ACTIVE_LOW>; enable-active-high; regulator-boot-on; regulator-always-on; }; }; &lcdif2 { display = <&display1>; disp-dev = "ldb"; status = "okay"; display1: display@1 { bits-per-pixel = <16>; bus-width = <18>; }; }; &ldb { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_ldb_0>; lcd-supply = <®_lcd_pwr &backlight_regulator>; status = "okay"; lvds-channel@0 { fsl,data-mapping = "spwg"; fsl,data-width = <18>; crtc = "lcdif2"; status = "okay"; display-timings { native-mode = <&timing1>; timing1: LDB-WVGA { clock-frequency = <33660000>; hactive = <800>; vactive = <480>; hback-porch = <56>; hfront-porch = <50>; vback-porch = <23>; vfront-porch = <20>; hsync-len = <150>; vsync-len = <2>; }; }; }; }; &i2c1 { touchscreen: st1232@55 { compatible = "sitronix,st1232"; reg = <0x55>; interrupt-parent = <&gpio6>; interrupts = <4 IRQ_TYPE_LEVEL_LOW>; pinctrl-0 = <&pinctrl_st1232>; pinctrl-names = "default"; gpios = <&gpio6 5 GPIO_ACTIVE_LOW>; }; }; &dcic2 { dcic_id = <1>; dcic_mux = "dcic-lvds"; status = "okay"; }; &lcdif1 { /* Disable HDMI */ status = "disabled"; }; &i2c3 { /* Disable HDMI */ status = "disabled"; }; Here's some logs and outputs: Code: user@host:~# dmesg | grep -E "etnaviv|drm|mxsfb" [ 1.236707] etnaviv etnaviv: bound 1800000.gpu (ops 0xc0d7c0b8) [ 1.244047] etnaviv-gpu 1800000.gpu: model: GC400, revision: 4645 [ 1.250843] etnaviv-gpu 1800000.gpu: Need to move linear window on MC1.0, disabling TS [ 1.259865] [drm] Initialized etnaviv 1.4.0 20151214 for etnaviv on minor 0 [ 1.267241] Error: Driver 'mxsfb' is already registered, aborting... [ 2.141557] mxsfb 2224000.lcdif: supply lcd not found, using dummy regulator [ 2.237241] mxsfb 2224000.lcdif: registered mxc display driver ldb [ 2.342101] mxsfb 2224000.lcdif: initialized user@host:~# ls /dev/dri/ by-path card0 renderD128 user@host:~# ls /usr/lib/xorg/modules/drivers/modesetting_drv.so /usr/lib/xorg/modules/drivers/modesetting_drv.so user@host:~# grep -E "(EE|WW|etnaviv|modesetting|DRM)" /var/log/Xorg.0.log [ 110.902] Current Operating System: Linux pad2 6.6.101-lf-6.6.y-lf-6.6.y-g36cee4c51e9a #1 PREEMPT Fri Aug 8 14:52:48 UTC 2025 armv7l (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 110.944] (WW) The directory "/usr/share/fonts/X11/misc" does not exist. [ 110.944] (WW) The directory "/usr/share/fonts/X11/TTF" does not exist. [ 110.944] (WW) The directory "/usr/share/fonts/X11/OTF" does not exist. [ 110.944] (WW) The directory "/usr/share/fonts/X11/Type1" does not exist. [ 110.944] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist. [ 110.945] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist. [ 110.966] (II) Platform probe for /sys/devices/platform/etnaviv/drm/card0 [ 111.079] falling back to /sys/devices/platform/etnaviv/drm/card0 [ 111.416] (WW) Falling back to old probe method for fbdev [ 111.707] (II) Initializing extension MIT-SCREEN-SAVER [ 114.495] (II) XINPUT: Adding extended input device "st1232-touchscreen" (type: TOUCHSCREEN, id 6) user@host:~# glxinfo | grep -E "OpenGL renderer|OpenGL vendor" Error: unable to open display user@host:~# export DISPLAY=:0 user@host:~# glxinfo | grep -E "OpenGL renderer|OpenGL vendor" Error: unable to open display :0 What I expect: a stable LVDS framebuffer handed to KMS/etnaviv and a working X11 modesetting driver with hw accel (no tearing). What I’ve already tried: Using etnaviv (driver loads; /dev/dri/card0 exists). Confirmed modesetting driver is present. Left LVDS node mostly identical to old 4.1 .dtsi. Questions / hints I think are relevant (please point out if I’m wrong): Is the tearing likely caused by a DT timing mismatch or by a double-driver handover (mxsfb vs. etnaviv/modesetting)? I see Error: Driver 'mxsfb' is already registered, aborting.... Do I need to enable/disable specific kernel CONFIGs (fbdev vs drm/KMS) or build etnaviv as builtin vs module for a clean handover? Are there DT properties I’m missing for the LDB -> lcdif2 CRTC mapping (crtc name, fsl,data-mapping, pixelclock) that would cause visible tearing? Anything obvious in the dts that will break atomic modeset / KMS? What I can provide on request: uname -a, kernel .config, full dmesg, lsmod, cat /proc/fb, cat /sys/class/drm/*/status, and the full Xorg.0.log. Thanks for any pointers. I’m new to modern KMS/DT handover so please tell me bluntly if I misunderstood something. Hope someone is still active here
I had to move away from meta-freescale and Freescale/NXP kernels. I'm using now linux-stable_6.12.bb from layer meta-linux-mainline (scarthgap) with following DTSI: Code: / { reg_lcd_pwr: lcd_pwr { compatible = "regulator-fixed"; regulator-name = "LCD POWER"; gpio = <&gpio4 27 GPIO_ACTIVE_HIGH>; enable-active-high; regulator-boot-on; }; backlight_lvds: backlight { compatible = "gpio-backlight"; gpios = <&gpio6 3 GPIO_ACTIVE_HIGH>; default-on; }; panel_lvds: panel-lvds { compatible = "umsh,8596md-20t", "panel-lvds"; width-mm = <152>; height-mm = <91>; data-mapping = "jeida-18"; power-supply = <®_lcd_pwr>; backlight = <&backlight_lvds>; status = "okay"; panel-timing { clock-frequency = <33600000>; hactive = <800>; vactive = <480>; hback-porch = <56>; hfront-porch = <50>; vback-porch = <23>; vfront-porch = <20>; hsync-len = <150>; vsync-len = <2>; hsync-active = <0>; vsync-active = <0>; de-active = <1>; pixelclk-active = <0>; }; port { panel_in: endpoint { remote-endpoint = <&lvds_bridge_out>; }; }; }; }; &gpu { /* Vivante GC400T */ status = "okay"; }; &lcdif1 { status = "okay"; port { lcdif_out: endpoint { remote-endpoint = <&lvds_bridge_in>; }; }; }; &clks { assigned-clocks = <&clks IMX6SX_CLK_PLL5_VIDEO>, <&clks IMX6SX_CLK_LDB_DI0_SEL>, <&clks IMX6SX_CLK_LCDIF1_PRED>, <&clks IMX6SX_CLK_LCDIF1_PODF>; assigned-clock-parents = <0>, <&clks IMX6SX_CLK_PLL5_VIDEO_DIV>, <0>, <0>; assigned-clock-rates = <940800000>, <0>, <33600000>, <33600000>; }; &gpr { status = "okay"; lvds_bridge: bridge@18 { status = "okay"; clocks = <&clks IMX6SX_CLK_LDB_DI0_SEL>; clock-names = "ldb"; ports { #address-cells = <1>; #size-cells = <0>; port@0 { reg = <0>; lvds_bridge_in: endpoint { remote-endpoint = <&lcdif_out>; }; }; port@1 { reg = <1>; lvds_bridge_out: endpoint { remote-endpoint = <&panel_in>; }; }; }; }; }; &i2c1 { /* ST1332 or ST1633 Touch IC */ touchscreen: st1232@55 { compatible = "sitronix,st1232"; reg = <0x55>; interrupt-parent = <&gpio6>; interrupts = <4 IRQ_TYPE_LEVEL_LOW>; pinctrl-0 = <&pinctrl_st1232>; pinctrl-names = "default"; gpios = <&gpio6 5 GPIO_ACTIVE_LOW>; }; }; &lcdif2 { /* Disable HDMI */ status = "disabled"; }; &i2c3 { /* Disable hdmi-transmitter */ status = "disabled"; }; and following patch: Code: diff --git a/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo.dtsi b/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo.dtsi index bbf792ac4896..c133299f48fc 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo.dtsi @@ -202,7 +202,7 @@ hdmi-transmitter@70 { ports { port { hdmi: endpoint { - remote-endpoint = <&lcdc>; + }; }; }; @@ -216,18 +216,6 @@ &i2c4 { /* Onboard Motion sensors */ status = "disabled"; }; -&lcdif1 { - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_lcd>; - status = "okay"; - - port { - lcdc: endpoint { - remote-endpoint = <&hdmi>; - }; - }; -}; - &iomuxc { pinctrl_bt_reg: btreggrp { fsl,pins = -- 2.44.4 Thanks to Bootlin and especially Louis C. who managed to find this solution.
That’s a huge win. Moving from that old 4.1 vendor kernel to 6.12 mainline is basically like jumping surge credit card pre approval
Sorry guys. I didn't expected any answer actually. Need to enable my notifications. I will share on Monday the recipe.
I've made a small tutorial with the help of Claude which I can share here. It's Markdown so feel free to paste in an another editor to read it in good conditions. Code: # LVDS 7" display support on UDOO NEO (mainline Linux 6.12) This enables an 800x480 LVDS panel (e.g. UMSH-8596MD-20T) on the UDOO NEO Extended using **mainline Linux 6.12.x** (tested on 6.12.77). The upstream `imx6sx-udoo-neo.dtsi` hardwires `lcdif1` to the HDMI transmitter. We need to remove that binding, then add our own LVDS device-tree overlay. --- ## 1. Kernel patch: free lcdif1 from HDMI Apply this patch to the kernel source. It removes the `lcdif1 <-> hdmi` endpoint link in the upstream `imx6sx-udoo-neo.dtsi`, freeing LCDIF1 for the LVDS bridge. ```diff diff --git a/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo.dtsi b/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo.dtsi index bbf792ac4896..c133299f48fc 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo.dtsi @@ -202,7 +202,7 @@ hdmi-transmitter@70 { ports { port { hdmi: endpoint { - remote-endpoint = <&lcdc>; + }; }; }; @@ -216,18 +216,6 @@ &i2c4 { /* Onboard Motion sensors */ status = "disabled"; }; -&lcdif1 { - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_lcd>; - status = "okay"; - - port { - lcdc: endpoint { - remote-endpoint = <&hdmi>; - }; - }; -}; - &iomuxc { pinctrl_bt_reg: btreggrp { fsl,pins = ``` --- ## 2. Device tree include: `imx6sx-udoo-neo-lvds7.dtsi` Add this file to `arch/arm/boot/dts/nxp/imx/` and `#include` it from your board `.dts`. It sets up the full display pipeline: **LCDIF1 -> LDB (LVDS bridge) -> panel** with a GPIO-controlled backlight and an optional Sitronix ST1232 touchscreen on I2C1. ```dts / { reg_lcd_pwr: lcd_pwr { compatible = "regulator-fixed"; regulator-name = "LCD POWER"; gpio = <&gpio4 27 GPIO_ACTIVE_HIGH>; enable-active-high; regulator-boot-on; }; backlight_lvds: backlight { compatible = "gpio-backlight"; gpios = <&gpio6 3 GPIO_ACTIVE_HIGH>; default-on; }; panel_lvds: panel-lvds { compatible = "umsh,8596md-20t", "panel-lvds"; width-mm = <152>; height-mm = <91>; data-mapping = "jeida-18"; power-supply = <®_lcd_pwr>; backlight = <&backlight_lvds>; status = "okay"; panel-timing { clock-frequency = <33600000>; hactive = <800>; vactive = <480>; hback-porch = <56>; hfront-porch = <50>; vback-porch = <23>; vfront-porch = <20>; hsync-len = <150>; vsync-len = <2>; hsync-active = <0>; vsync-active = <0>; de-active = <1>; pixelclk-active = <0>; }; port { panel_in: endpoint { remote-endpoint = <&lvds_bridge_out>; }; }; }; }; &gpu { /* Vivante GC400T */ status = "okay"; }; &lcdif1 { status = "okay"; assigned-clocks = <&clks IMX6SX_CLK_PLL5_VIDEO>, <&clks IMX6SX_CLK_LDB_DI0_SEL>, <&clks IMX6SX_CLK_LCDIF1_PRED>, <&clks IMX6SX_CLK_LCDIF1_PODF>; assigned-clock-parents = <0>, <&clks IMX6SX_CLK_PLL5_VIDEO_DIV>, <0>, <0>; assigned-clock-rates = <940800000>, <0>, <33600000>, <33600000>; port { lcdif_out: endpoint { remote-endpoint = <&lvds_bridge_in>; }; }; }; &gpr { status = "okay"; lvds_bridge: bridge@18 { status = "okay"; clocks = <&clks IMX6SX_CLK_LDB_DI0_SEL>; clock-names = "ldb"; ports { #address-cells = <1>; #size-cells = <0>; port@0 { reg = <0>; lvds_bridge_in: endpoint { remote-endpoint = <&lcdif_out>; }; }; port@1 { reg = <1>; lvds_bridge_out: endpoint { remote-endpoint = <&panel_in>; }; }; }; }; }; &i2c1 { /* ST1232 or ST1633 Touch IC */ touchscreen: st1232@55 { compatible = "sitronix,st1232"; reg = <0x55>; interrupt-parent = <&gpio6>; interrupts = <4 IRQ_TYPE_LEVEL_LOW>; pinctrl-0 = <&pinctrl_st1232>; pinctrl-names = "default"; gpios = <&gpio6 5 GPIO_ACTIVE_LOW>; }; }; &lcdif2 { /* Disable HDMI */ status = "disabled"; }; &i2c3 { /* Disable hdmi-transmitter */ status = "disabled"; }; ``` --- ## 3. Pinctrl: required pad configuration The LVDS GPIOs (backlight, panel power, touchscreen) need their pads configured. Add this to your `&iomuxc` node: ```dts &iomuxc { pinctrl_ldb_0: ldbctrlgrp-0 { fsl,pins = < MX6SX_PAD_SD1_DATA1__GPIO6_IO_3 0x80000000 // BL_ON MX6SX_PAD_QSPI1B_DATA3__GPIO4_IO_27 0x80000000 // PANEL_ON >; }; pinctrl_st1232: st1232grp-0 { fsl,pins = < MX6SX_PAD_SD1_DATA2__GPIO6_IO_4 0x80000000 // TOUCH_INT MX6SX_PAD_SD1_DATA3__GPIO6_IO_5 0x80000000 // TOUCH_RST >; }; }; ``` --- ## 4. Kernel config options (relevant subset) Make sure these are enabled for the display pipeline: ``` CONFIG_DRM=y CONFIG_DRM_FBDEV_EMULATION=y CONFIG_DRM_PANEL_LVDS=m CONFIG_DRM_PANEL_SIMPLE=m CONFIG_DRM_FSL_LDB=m CONFIG_DRM_LVDS_CODEC=m CONFIG_DRM_ETNAVIV=m CONFIG_DRM_MXSFB=m CONFIG_DRM_IMX_LCDIF=m CONFIG_FB_DEVICE=y CONFIG_LCD_CLASS_DEVICE=y CONFIG_BACKLIGHT_CLASS_DEVICE=m CONFIG_BACKLIGHT_GPIO=m CONFIG_INPUT_TOUCHSCREEN=y CONFIG_TOUCHSCREEN_ST1232=y ``` --- ## 5. Yocto recipe: `linux-udoo_6.12.bb` If you build with Yocto/OE, here is a cleaned recipe. It requires the [meta-linux-mainline](https://github.com/pidge/meta-linux-mainline) layer for `linux-stable.inc`. Place the `.dtsi`, `.dts`, `.patch` and `defconfig` files under `recipes-kernel/linux/linux-udoo/`. ```bitbake require recipes-kernel/linux/linux-stable.inc FILESEXTRAPATHS:prepend := "${THISDIR}/${BPN}:" COMPATIBLE_MACHINE = "(udooneo)" # To upgrade: copy LINUX_VPATCH + SRCREV from meta-linux-mainline/linux-stable_6.12.bb LINUX_VMAJOR = "6" LINUX_VMINOR = "12" LINUX_VPATCH = "77" SRCREV = "6f232446a62980e51f537db1c655e686d869b9ed" SRC_URI:append = " \ file://imx6sx-udoo-neo-lvds7.dtsi \ file://imx6sx-udoo-neo-lvds7.dts \ file://defconfig \ file://0001-Remove-lcdif1-and-hdmi-transmitter-endpoint.patch \ " KBUILD_DEFCONFIG:udooneo = "" KERNEL_LOCALVERSION:udooneo = "-udooneo-lvds" # Install dtsi/dts into kernel tree after patches are applied do_patch:append() { install -m 0644 ${WORKDIR}/imx6sx-udoo-neo-lvds7.dtsi \ ${S}/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo-lvds7.dtsi install -m 0644 ${WORKDIR}/imx6sx-udoo-neo-lvds7.dts \ ${S}/arch/arm/boot/dts/nxp/imx/imx6sx-udoo-neo-lvds7.dts } do_recompile_dtb() { cd ${B} oe_runmake nxp/imx/imx6sx-udoo-neo-lvds7.dtb } addtask recompile_dtb before do_compile after do_configure ``` The board `.dts` (`imx6sx-udoo-neo-lvds7.dts`) would look like: ```dts // SPDX-License-Identifier: (GPL-2.0+ OR MIT) /dts-v1/; #include "imx6sx-udoo-neo.dtsi" #include "imx6sx-udoo-neo-lvds7.dtsi" / { model = "UDOO NEO Extended with LVDS"; compatible = "udoo,neoextended", "fsl,imx6sx"; memory@80000000 { device_type = "memory"; reg = <0x80000000 0x40000000>; }; }; &uart3 { /* Bluetooth */ status = "okay"; }; ``` Don't forget to add the pinctrl definitions from section 3 - either inline in the `.dts` or in a separate `.dtsi`. --- Tested on UDOO NEO Extended with a 7" LVDS panel (UMSH-8596MD-20T / URT UMSH-8596MD-20T compatible) on mainline Linux 6.12.77.
Also, if you are using U-Boot, be aware that commit 99a94c368c9056acf8107ae4163efbb1cbe34d42 introduced a bug. You may see about half of your UDOONEO boards panic during boot. As a result, with U-Boot you are limited to version 2022.07 or earlier. If you need a newer version, you can apply this patch which reverts part of the faulty commit: Code: From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Carton <myemail@notdisclosed.com> Date: Tue, 25 Mar 2026 10:00:00 +0000 Subject: [PATCH] board: udoo neo: fix PMIC device name and restore voltage programming Upstream-Status: Inappropriate Commit 99a94c368c9 ("udoo_neo: Move to DM for REGULATOR/PMIC/I2C drivers") migrated from the legacy PMIC framework to DM but introduced two bugs: 1. pmic_get() is called with "pfuze3000@8" but the DT node is named "pmic@8", so the lookup always fails with -ENODEV and the function silently returns without configuring anything. 2. The voltage programming (VDD_ARM, VDD_SOC, DDR, standby voltages, ramp rates, VGEN2) was removed during the migration. Without these settings the board runs on PFUZE3000 power-on defaults, causing memory corruption and instability. Fix the device name and restore the full voltage configuration using the DM pmic_reg_read/pmic_reg_write API, matching the values from the original POWER_LEGACY implementation. Signed-off-by: Carton <myemail@notdisclosed.com> --- board/udoo/neo/neo.c | 53 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 52 insertions(+), 1 deletion(-) diff --git a/board/udoo/neo/neo.c b/board/udoo/neo/neo.c index d99d93b44ae..4d2322ae04e 100644 --- a/board/udoo/neo/neo.c +++ b/board/udoo/neo/neo.c @@ -78,9 +78,9 @@ int dram_init(void) int power_init_board(void) { struct udevice *dev; - int ret, dev_id, rev_id; + int ret, dev_id, rev_id, reg; - ret = pmic_get("pfuze3000@8", &dev); + ret = pmic_get("pmic@8", &dev); if (ret == -ENODEV) return 0; if (ret != 0) @@ -90,8 +90,58 @@ int power_init_board(void) rev_id = pmic_reg_read(dev, PFUZE3000_REVID); printf("PMIC: PFUZE3000 DEV_ID=0x%x REV_ID=0x%x\n", dev_id, rev_id); + /* disable Low Power Mode during standby mode */ pmic_clrsetbits(dev, PFUZE3000_LDOGCTL, 0, 1); + /* set all switchers to APS mode (auto power save) */ + pmic_reg_write(dev, PFUZE3000_SW1AMODE, 0xc); + pmic_reg_write(dev, PFUZE3000_SW1BMODE, 0xc); + pmic_reg_write(dev, PFUZE3000_SW2MODE, 0xc); + pmic_reg_write(dev, PFUZE3000_SW3MODE, 0xc); + + /* set SW1A standby voltage 0.975V */ + reg = pmic_reg_read(dev, PFUZE3000_SW1ASTBY); + reg &= ~0x3f; + reg |= PFUZE3000_SW1AB_SETP(9750); + pmic_reg_write(dev, PFUZE3000_SW1ASTBY, reg); + + /* set SW1B standby voltage 0.975V */ + reg = pmic_reg_read(dev, PFUZE3000_SW1BSTBY); + reg &= ~0x3f; + reg |= PFUZE3000_SW1AB_SETP(9750); + pmic_reg_write(dev, PFUZE3000_SW1BSTBY, reg); + + /* set SW1A/VDD_ARM_IN step ramp up time from 16us to 4us/25mV */ + pmic_clrsetbits(dev, PFUZE3000_SW1ACONF, 0xc0, 0x40); + + /* set SW1B/VDD_SOC_IN step ramp up time from 16us to 4us/25mV */ + pmic_clrsetbits(dev, PFUZE3000_SW1BCONF, 0xc0, 0x40); + + /* set VDD_ARM_IN to 1.350V */ + reg = pmic_reg_read(dev, PFUZE3000_SW1AVOLT); + reg &= ~0x3f; + reg |= PFUZE3000_SW1AB_SETP(13500); + pmic_reg_write(dev, PFUZE3000_SW1AVOLT, reg); + + /* set VDD_SOC_IN to 1.350V */ + reg = pmic_reg_read(dev, PFUZE3000_SW1BVOLT); + reg &= ~0x3f; + reg |= PFUZE3000_SW1AB_SETP(13500); + pmic_reg_write(dev, PFUZE3000_SW1BVOLT, reg); + + /* set DDR_1_5V to 1.350V */ + reg = pmic_reg_read(dev, PFUZE3000_SW3VOLT); + reg &= ~0x0f; + reg |= PFUZE3000_SW3_SETP(13500); + pmic_reg_write(dev, PFUZE3000_SW3VOLT, reg); + + /* set VGEN2_1V5 to 1.5V and enable */ + reg = pmic_reg_read(dev, PFUZE3000_VLDO2CTL); + reg &= ~0x0f; + reg |= PFUZE3000_VLDO_SETP(15000); + reg |= 0x10; + pmic_reg_write(dev, PFUZE3000_VLDO2CTL, reg); + return 0; } -- 2.44.4
