A13 and LCD7

[marcellus.pereira]

Dear All,

is anyone using the LCD7 and Olinuxino A13, booting under Linux? When I boot, the LCD blinks and that's all...

I can't put the kernel config file here, but the fb session is:

#
# Graphics support
#
CONFIG_DRM=m
CONFIG_DRM_MALI=m
# CONFIG_ION is not set
CONFIG_MALI=m
# CONFIG_VGASTATE is not set
# CONFIG_VIDEO_OUTPUT_CONTROL is not set
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
# CONFIG_FB_DDC is not set
# CONFIG_FB_BOOT_VESA_SUPPORT is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
# CONFIG_FB_WMT_GE_ROPS is not set
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
# CONFIG_FB_MODE_HELPERS is not set
# CONFIG_FB_TILEBLITTING is not set

#
# Frame buffer hardware drivers
#

#
# Display options for sun4i/sun5i
#
CONFIG_LYCHEE_FB_SUN5I=y
CONFIG_FB_SUNXI=y
CONFIG_FB_SUNXI_RESERVED_MEM=y
CONFIG_FB_SUNXI_UMP=y
CONFIG_LYCHEE_LCD_SUN5I=y
CONFIG_FB_SUNXI_LCD=y
# CONFIG_LYCHEE_HDMI_SUN5I is not set
# CONFIG_FB_ARMCLCD is not set
# CONFIG_FB_UVESA is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_UDL is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_BROADSHEET is not set
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y
CONFIG_SOUND=y
# CONFIG_SOUND_OSS_CORE is not set
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_JACK=y
# CONFIG_SND_SEQUENCER is not set
# CONFIG_SND_MIXER_OSS is not set
# CONFIG_SND_PCM_OSS is not set
# CONFIG_SND_DYNAMIC_MINORS is not set
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
# CONFIG_SND_RAWMIDI_SEQ is not set
# CONFIG_SND_OPL3_LIB_SEQ is not set
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
# CONFIG_SND_EMU10K1_SEQ is not set
CONFIG_SND_DRIVERS=y
# CONFIG_SND_DUMMY is not set
# CONFIG_SND_ALOOP is not set
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set
CONFIG_SND_ARM=y
# CONFIG_SND_ARMAACI is not set
CONFIG_SND_SPI=y
CONFIG_SND_USB=y
# CONFIG_SND_USB_AUDIO is not set
# CONFIG_SND_USB_UA101 is not set
# CONFIG_SND_USB_CAIAQ is not set
# CONFIG_SND_USB_6FIRE is not set
CONFIG_SND_SOC=y
# CONFIG_SND_SOC_CACHE_LZO is not set
CONFIG_SOUND_SUN5I=y
CONFIG_SND_SUN5I_SOC_CODEC=y
CONFIG_SND_SUN5I_SOC_HDMIAUDIO=y
CONFIG_SND_SUN5I_SOC_SPDIF=m
CONFIG_SND_SUN5I_SOC_I2S_INTERFACE=m
CONFIG_SND_SOC_I2C_AND_SPI=y
# CONFIG_SND_SOC_ALL_CODECS is not set
# CONFIG_SOUND_PRIME is not set
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
# CONFIG_HIDRAW is not set
# CONFIG_UHID is not set

Thank you very much!

[marcellus.pereira]

Dear ALL, it's alive! I mean: it works!

The pin 36 of LCD connector controls the backlight. And backlight is activated by GND or "0" logic signal.

Unfortunately, I could not find information about PWM registers to make a driver, so I cut the cable and grounded it. I changed the environment variable "console" to "console=tty0 console=ttyS0,115200", so I can see the console at the LCD and at serial port simultaneously.