Is LVDS/MIPI_DSI supported in linux on i.MX7? Is there any working dts examples?

olegkorenevich — Mon, 12 Sep 2016 14:20:01 GMT

I'm tring to add support for MIPI DSI interface (that will be converted into LVDS on my board) on i.MX7 SOM.

i'm using dts with:

&mipi_dsi {
   disp-dev = "mipi_dsi";
   compatible = "fsl,imx7d-mipi-dsi"; // also "imx7d-mipi-dsi" added to mipi_dsi.c with values of imx6
   lcd_panel = "TRULY-WVGA";
   dev_id = <0>;// doesn't know why, driver requirement
   disp_id = <0>;// doesn't know why, from example
   gpr = <&gpr>;
   disp-power-on-supply = <&reg_mipi_dsi_pwr_on>;
   resets = <&mipi_dsi_reset>;
   status = "okay";
};

reg_mipi_dsi_pwr_on: mipi_dsi_pwr_on {
compatible = "regulator-fixed";
regulator-name = "mipi_dsi_pwr_on";
gpio = <&gpio4 16 GPIO_ACTIVE_HIGH>;
enable-active-high;
};

mipi_dsi_reset: mipi-dsi-reset {
compatible = "gpio-reset";
reset-gpios = <&gpio4 17 GPIO_ACTIVE_LOW>;
reset-delay-us = <50>;
#reset-cells = <0>;
};

Part of kernel config

grep -i mxc .config
CONFIG_ARCH_MXC=y
CONFIG_MXC_TZIC=y
CONFIG_CMDLINE="noinitrd console=ttymxc0,115200"
CONFIG_MTD_NAND_MXC=y
CONFIG_GPIO_MXC=y
# CONFIG_MFD_MXC_HDMI is not set
CONFIG_VIDEO_MXC_OUTPUT=y
# CONFIG_VIDEO_MXC_CAPTURE is not set
# CONFIG_VIDEO_MXC_IPU_OUTPUT is not set
CONFIG_VIDEO_MXC_PXP_V4L2=y
CONFIG_FB_MXC=y
CONFIG_FB_MXC_SYNC_PANEL=y
CONFIG_FB_MXC_MIPI_DSI=y
CONFIG_FB_MXC_MIPI_DSI_SAMSUNG=y
CONFIG_FB_MXC_TRULY_WVGA_SYNC_PANEL=y
# CONFIG_FB_MXC_LDB is not set
# CONFIG_FB_MXC_HDMI is not set
# CONFIG_FB_MXC_EDID is not set
# CONFIG_FB_MXC_DCIC is not set
# CONFIG_FB_MXC_EINK_PANEL is not set
# CONFIG_FB_MXC_EINK_V2_PANEL is not set
CONFIG_USB_EHCI_MXC=y
# CONFIG_MMC_MXC is not set
# MXC support drivers
CONFIG_MXC_IPU=y
# MXC Media Local Bus Driver
CONFIG_MXC_IPU_V3=y
CONFIG_MXC_IPU_V3_PRG=y
CONFIG_MXC_IPU_V3_PRE=y
# MXC SIM Support
# CONFIG_MXC_SIM is not set
# MXC MIPI Support
CONFIG_MXC_MIPI_CSI2=y
# MXC VPU(Video Processing Unit) support
CONFIG_MXC_VPU=y
# CONFIG_MXC_VPU_DEBUG is not set
# MXC HDMI CEC (Consumer Electronics Control) support
CONFIG_RTC_DRV_MXC=y
CONFIG_MXC_PXP_V2=y
# CONFIG_MXC_PXP_V3 is not set
CONFIG_MXC_PXP_CLIENT_DEVICE=y

Help me please

Re: Is LVDS/MIPI_DSI supported in linux on i.MX7? Is there any working dts examples?

igorpadykov — Wed, 21 Sep 2016 23:49:30 GMT

Hi Oleg

one can look at imx7d.dtsi

linux-2.6-imx.git - Freescale i.MX Linux Tree

and attached Linux Manual Chapter 7 MIPI DSI Driver

Best regards
igor
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Is LVDS/MIPI_DSI supported in linux on i.MX7? Is there any working dts examples?

Re: Is LVDS/MIPI_DSI supported in linux on i.MX7? Is there any working dts examples?