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edatec Open Source‌ HMI for 10 inches panel driver #7362

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1 change: 1 addition & 0 deletions arch/arm/boot/dts/overlays/Makefile
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Expand Up @@ -337,6 +337,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
vc4-kms-dpi-hyperpixel4sq.dtbo \
vc4-kms-dpi-panel.dtbo \
vc4-kms-dsi-7inch.dtbo \
vc4-kms-dsi-edatec-panel-101c.dtbo \
vc4-kms-dsi-generic.dtbo \
vc4-kms-dsi-ili79600-10-1inch.dtbo \
vc4-kms-dsi-ili9881-5inch.dtbo \
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15 changes: 15 additions & 0 deletions arch/arm/boot/dts/overlays/README
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Expand Up @@ -5790,6 +5790,21 @@ Params: sizex Touchscreen size x (default 800)
the default DSI1 and i2c_csi_dsi).


Name: vc4-kms-dsi-edatec-panel-101c
Info: Enable the edatec DSI 10" screen.
support ed-dispr-101c.
support ed-dispr5-101c.
support ed-dispr4-101c.
Load: dtoverlay=vc4-kms-dsi-edatec-panel-101c,<param>=<val>
Params: rotation Display rotation {0,90,180,270} (default 0)
interrupt GPIO pin for interrupt signal(default 2)
cm0 the default DSI1 and i2c_csi_dsi
pi4 the default DSI1 and i2c_csi_dsi
cm4 the default DSI1 and i2c_csi_dsi
pi5 the default DSI1 and i2c_csi_dsi
cm5 the default DSI0 and i2c_csi_dsi0


Name: vc4-kms-dsi-generic
Info: Enable a generic DSI display under KMS.
Default timings are for a 840x480 RGB888 panel.
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133 changes: 133 additions & 0 deletions arch/arm/boot/dts/overlays/vc4-kms-dsi-edatec-panel-101c-overlay.dts
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/dts-v1/;
/plugin/;

/ {
compatible = "brcm,bcm2835";

fragment@0 {
target-path = "/";
__overlay__ {
vdd_lcd: fixedregulator_lcd {
compatible = "regulator-fixed";
regulator-name = "vdd_lcd";
regulator-max-microvolt = <5000000>;
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@6by9 6by9 May 14, 2026

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Defining the voltages is fairly redundant when it is a fixed regulator.

regulator-min-microvolt = <5000000>;

gpios = <&reg_display 4 0>;
regulator-boot-on;
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@6by9 6by9 May 14, 2026

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This feels like an odd property to be setting on this regulator
Docs at https://github.com/raspberrypi/linux/blob/rpi-6.18.y/Documentation/devicetree/bindings/regulator/regulator.yaml#L44-L51

  It's expected that this regulator was left on by the bootloader.
 If the bootloader didn't leave it on then OS should turn it on
 at boot but shouldn't prevent it from being turned off later.
 This property is intended to only be used for regulators where
 software cannot read the state of the regulator.

enable-active-high;
};
};
};

fragment@1 {
target = <&dsi1>;
__overlay__{
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
port {
dsi_out_port:endpoint {
remote-endpoint = <&panel_dsi_port>;
};
};

ili9881c:ili9881c@0 {
compatible = "rzw,t101p136cq-rpi4";
status = "okay";
reg = <0>;

reset-gpios = <&reg_display 2 0>;
backlight = <&reg_display>;
power-supply = <&vdd_lcd>;
rotation = <270>;

port {
panel_dsi_port: endpoint {
remote-endpoint = <&dsi_out_port>;
};
};
};
};
};

fragment@2 {
target = <&i2c0if>;
__overlay__ {
status = "okay";
};
};

fragment@3 {
target = <&i2c0mux>;
__overlay__ {
status = "okay";
};
};

fragment@4 {
target = <&gpio>;
__overlay__ {
gt928_pins: gt928_pins {
brcm,pins = <16>;
brcm,function = <0>;
brcm,pull = <2>;
};
};
};

i2c_frag: fragment@5 {
target = <&i2c_csi_dsi>;
__overlay__ {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";

reg_display: reg_display@27 {
compatible = "edatec,disp-regulator";
reg = <0x27>;
gpio-controller;
#gpio-cells = <2>;
};

gt928:gt928@14 {
compatible = "goodix,gt928";
reg = <0x14>;
pinctrl-names = "default";
pinctrl-0 = <&gt928_pins>;

reset-gpios = <&reg_display 3 0>;
interrupt-parent = <&gpio>;
interrupts = <16 2>;
irq-gpios = <&gpio 16 0>;
};
};
};

fragment@6 {
target = <&ili9881c>;
__dormant__ {
compatible = "rzw,t101p136cq-rpi4-lite";
};
};

fragment@7 {
target = <&ili9881c>;
__dormant__ {
compatible = "rzw,t101p136cq-rpi5";
};
};

__overrides__ {
interrupt = <&gt928_pins>,"brcm,pins:0",
<&gt928>,"interrupts:0",
<&gt928>,"irq-gpios:4";
rotation = <&ili9881c>,"rotation:0";

pi4 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>,<0>, "+6";
cm4 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>;
pi5 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>,<0>, "+7";
cm5 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi0>,<0>, "+7";
cm0 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>,<0>, "+6";
};
};
183 changes: 183 additions & 0 deletions arch/arm/configs/edatec_10_defconfig
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# CONFIG_LOCALVERSION_AUTO is not set
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Why do we need a special defconfig for this hardware?

CONFIG_SYSVIPC=y
CONFIG_NO_HZ_IDLE=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_PREEMPT_VOLUNTARY=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_LOG_BUF_SHIFT=18
CONFIG_CFS_BANDWIDTH=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_CGROUP_PERF=y
CONFIG_NAMESPACES=y
CONFIG_SCHED_AUTOGROUP=y
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_EXPERT=y
CONFIG_KALLSYMS_ALL=y
CONFIG_PROFILING=y
CONFIG_KEXEC=y
CONFIG_ARCH_MULTI_V6=y
CONFIG_ARCH_BCM=y
CONFIG_ARCH_BCM2835=y
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPUFREQ_DT=y
CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
CONFIG_VFP=y
# CONFIG_SUSPEND is not set
CONFIG_PM=y
CONFIG_JUMP_LABEL=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_KSM=y
CONFIG_CMA=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_NETWORK_SECMARK=y
CONFIG_NETFILTER=y
CONFIG_BT=y
CONFIG_BT_HCIUART=m
CONFIG_BT_HCIUART_BCM=y
CONFIG_CFG80211=y
CONFIG_MAC80211=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_STANDALONE is not set
CONFIG_RASPBERRYPI_FIRMWARE=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_NETDEVICES=y
CONFIG_BCMGENET=y
CONFIG_USB_LAN78XX=y
CONFIG_USB_USBNET=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_BRCMFMAC=m
CONFIG_ZD1211RW=y
CONFIG_INPUT_EVDEV=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_BCM2835AUX=y
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_DEV_BUS=y
CONFIG_TTY_PRINTK=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_BCM2835=y
CONFIG_SPI=y
CONFIG_SPI_BCM2835=y
CONFIG_SPI_BCM2835AUX=y
CONFIG_GPIO_SYSFS=y
CONFIG_SENSORS_RASPBERRYPI_HWMON=m
CONFIG_THERMAL=y
CONFIG_BCM2711_THERMAL=y
CONFIG_BCM2835_THERMAL=y
CONFIG_WATCHDOG=y
CONFIG_BCM2835_WDT=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_GPIO=y
CONFIG_REGULATOR_EDATEC_10INCH=m
CONFIG_MEDIA_SUPPORT=y
CONFIG_DRM=y
CONFIG_DRM_SIMPLEDRM=y
CONFIG_DRM_PANEL_ILITEK_ILI9881C=m
CONFIG_DRM_V3D=y
CONFIG_DRM_VC4=y
CONFIG_FB=y
CONFIG_BACKLIGHT_CLASS_DEVICE=m
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_SOC=y
CONFIG_SND_BCM2835_SOC_I2S=y
CONFIG_USB=y
CONFIG_USB_OTG=y
CONFIG_USB_STORAGE=y
CONFIG_USB_DWC2=y
CONFIG_NOP_USB_XCEIV=y
CONFIG_USB_GADGET=y
CONFIG_USB_ETH=m
CONFIG_USB_ETH_EEM=y
CONFIG_USB_G_SERIAL=m
CONFIG_MMC=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_SDHCI_IPROC=y
CONFIG_MMC_BCM2835=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_ONESHOT=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
CONFIG_LEDS_TRIGGER_TRANSIENT=y
CONFIG_LEDS_TRIGGER_CAMERA=y
CONFIG_DMADEVICES=y
CONFIG_DMA_BCM2835=y
CONFIG_STAGING=y
CONFIG_SND_BCM2835=m
CONFIG_VIDEO_BCM2835=m
CONFIG_CLK_RASPBERRYPI=y
CONFIG_MAILBOX=y
CONFIG_BCM2835_MBOX=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_RASPBERRYPI_POWER=y
CONFIG_PWM=y
CONFIG_PWM_BCM2835=y
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_FANOTIFY=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
CONFIG_ROOT_NFS=y
CONFIG_NFSD=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_UTF8=y
# CONFIG_XZ_DEC_ARM is not set
# CONFIG_XZ_DEC_ARMTHUMB is not set
CONFIG_DMA_CMA=y
CONFIG_CMA_SIZE_MBYTES=32
CONFIG_PRINTK_TIME=y
CONFIG_BOOT_PRINTK_DELAY=y
CONFIG_DYNAMIC_DEBUG=y
CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
CONFIG_DEBUG_FS=y
CONFIG_KGDB=y
CONFIG_KGDB_KDB=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_FUNCTION_PROFILER=y
CONFIG_STACK_TRACER=y
CONFIG_SCHED_TRACER=y
CONFIG_STRICT_DEVMEM=y
CONFIG_TEST_KSTRTOX=y
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