I. MX6Q (TQIMX6Q/TQE9) Study Notes-New bsp LCD porting, tqimx6qtqe9

I. MX6Q (TQIMX6Q/TQE9) Study Notes-New bsp LCD porting, tqimx6qtqe9

After the above transplantation, eMMC can run properly on tqimx6q. This article will transplant the LCD driver in the future.

Write data through DTS

The LCD controller of imx6 is slightly different from the previous one. For more information, see the chip manual. Refer to the data transmission on the sabrelite Development Board to add the following content:

/ {...aliases {mxcfb0 = &mxcfb1;};...regulators {...reg_mipi_dsi_pwr_on: mipi_dsi_pwr_on {compatible = "regulator-fixed";regulator-name = "mipi_dsi_pwr_on";gpio = <&gpio6 14 0>;enable-active-high;}; };...backlight {compatible = "pwm-backlight";pwms = <&pwm1 0 5000000>;brightness-levels = <0 4 8 16 32 64 128 255>;default-brightness-level = <7>;};mipi_dsi_reset: mipi-dsi-reset {compatible = "gpio-reset";reset-gpios = <&gpio6 11 GPIO_ACTIVE_LOW>;reset-delay-us = <50>;#reset-cells = <0>;};mxcfb1: fb@0 {compatible = "fsl,mxc_sdc_fb";disp_dev = "lcd";interface_pix_fmt = "RGB24";mode_str ="CLAA-WVGA";default_bpp = <24>;int_clk = <0>;late_init = <0>;status = "okay";};};...&mipi_dsi {dev_id = <0>;disp_id = <1>;lcd_panel = "TRULY-WVGA";disp-power-on-supply = <&reg_mipi_dsi_pwr_on>;resets = <&mipi_dsi_reset>;status = "okay";};...

Add the above content and re-compile and burn DTB.

Test Method

Start the kernel with the new DTB and you will find four cute little penguins on the screen. I will not send any picture here. I will only attach the complete kernel startup Log, as shown below:

U-Boot 2013.04-04987-g98fdbdc-dirty (May 03 2015-11:46:24) CPU: Freescale I. MX6Q rev1.2 at 792 MHzCPU: Temperature 23 C, calibration data: Drawing cause: PORBoard: MX6Q/SDL-SabreSDI2C: readyDRAM: 1 GiBMMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2No panel detected: default to Hannstar-XGADisplay: Hannstar-XGA (1024x768) In: serialOut: serialErr: serialmmc0 is current deviceNet: Phy not foundPHY Reset timed outFEC [PRIME] Warning: failed to set MAC addressNormal BootHit any key to stop autoboot: 0 mmc0 is current deviceMMC read: dev #0, block #2048, count 12288... 12288 blocks read: OKMMC read: dev #0, block #20480, count 2048... 2048 blocks read: OK # Booting kernel from Legacy Image at 11ffffc0... image Name: Linux-3.10.17-80739-g33597e3-dir Image Type: ARM Linux Kernel Image (un Compressed) Data Size: 5289360 Bytes = 5 MiB Load Address: 12000000 Entry Point: 12000000 Verifying Checksum... OK ## Flattened Device Tree blob at 18000000 Booting using the fdt blob at 0x18000000 XIP Kernel Image... OKOK Using Device Tree in place at 18000000, end 1800cb83Starting kernel... booting Linux on physical CPU 0x0Linux version 3.10.17-80739-g33597e3-dirty (lilianrong @ lenovo) (gcc vers Ion 4.7.3 (Ubuntu/Linaro 4.7.3-12ubuntu1) #3 smp preempt Wed May 13 00:16:49 CST 2015CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr = 10c53c7dCPU: PIPT/VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine: Freescale I. MX6 Quad/DualLite (Device Tree), model: Freescale I. MX6 Quad TQIMX6Q Smart Device Boardcma: CMA: reserved 320 MiB at 3c000000Memory policy: ECC disabled, Da Ta cache writeallocPERCPU: Embedded 8 pages/cpu @ 814fa000 s8896 r8192 d15680 u32768Built 1 zonelists in Zone order, mobility grouping on. total pages: 260096 Kernel command line: noinitrd console = ttymxc0, 115200 root =/dev/mmcblk0p1 rw rootfstype = ext4 init =/linuxrcPID hash table entries: 4096 (order: 2, 16384 bytes) Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table Entries: 65536 (order: 6, 262144 bytes) Memory: 1024 MB = 1024 MB totalMemory: 697788 k/697788 k available, 350788 k reserved, 0 K highmemVirtual kernel memory layout: vector: 0xffff0000-0xffff1000 (4 kB) fixmap: 0xfff00000-0xfffe0000 (896 kB) vmalloc: 0xc0800000-0xff000000 (1000 MB) lowmem: 0x80000000-0xc0000000 (1024 MB) pkmap: 0x7fe00000-0x80000000 (2 MB) modules: 0x7f000000-0x7f E00000 (14 MB ). text: 0x80008000-0x80be704c (12157 kB ). init: 0x80be8000-0x80c2a2c0 (265 kB ). data: 0x80c2c000-0x80c7c260 (321 kB ). bss: 0x80c7c260-0x80ce5434( 421 kB) SLUB: HWalign = 64, Order = 0-3, MinObjects = 0, CPUs = 4, Nodes = 1 Preemptible hierarchical RCU implementation. NR_IRQS: 16 nr_irqs: 16 16L310 cache controller enabledl2x0: 16 ways, CACHE_ID 0x41_c7, AUX_CTRL 0x32070000, Cache Size: 1048576 Bsched_clock: 32 bits at 3000 kHz, resolution 333ns, wraps every 1431655 msCPU identified as I. MX6Q, silicon rev 1.2 Console: color dummy device 80x30Calibrating delay loop... 1581.05 BogoMIPS (lpj = 7905280) pid_max: default: 32768 minimum: 301Mount-cache hash table entries: 512CPU: Testing write buffer coherency: okCPU0: thread-1, cpu 0, socket 0, mpid r 80000000 Setting up static ident Ity map for 0x806425a8-0x80610700CPU1: Booted secondary processorCPU1: thread-1, cpu 1, socket 0, mpidr 8001_1cpu2: Booted secondary processorCPU2: thread-1, cpu 2, socket 0, mpidr 8003662cpu3: Booted secondary processorCPU3: thread-1, cpu 3, socket 0, mpidr 80000003 Brought up 4 CPUsSMP: Total of 4 processors activated (6324.22 BogoMIPS ). CPU: All CPU (s) started in SVC mode. devtmpfs: initia Using core: initialized pinctrl subsystemregulator-dummy: no parametersNET: Registered protocol family 16DMA: preallocated 256 KiB pool for atomic coherent allocationsUse WDOG1 as reset sourcesyscon 20c8000. anatop: regmap [mem 0x020c8000-0x020c8fff] registeredvdd1p1: 800 <--> 1375 mV at 1125 mV vdd3p0: 2800 <--> 3150 mV at 3000 mV vdd2p5: 2000 <--> 2750 mV at 2425 mV cpu: 725 <--> 1450 mV T 1150 mV vddpu: 725 <--> 1450 mV vddsoc: 725 <--> 1450 mV at 1200 mV syscon 20e0000. iomuxc-gpr: regmap [mem 0x020e0000-0x020e0037] registeredsyscon 21bc000. ocotp-ctrl: regmap [mem 0x021bc000-0x021bffff] registeredhw-breakpoint: found 5 (+ 1 reserved) breakpoint and 1 watchpoint registers. hw-breakpoint: maximum watchpoint size is 4 bytes. imx6q-pinctrl 20e0000. iomuxc: initialized IMX pinctrl driverb Io: create slab <bio-0> at 0mxs-dma 110000. dma-apbh: Protocol: 5000 mV Protocol: no parametersi2c-core: driver [max17135] using legacy suspend methodi2c-core: driver [max17135] using legacy resume methodSCSI subsystem initializedusbcore: registered new interface driver usbfsusbcore: registered new interface driver hubusbcore: registered new device driver usbLinux video captur E interface: v2.00pps _ core: LinuxPPS API ver. 1 registeredpps_core: Software ver. 5.3.6-Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it> PTP clock support registeredimx-ipuv3 24.00.ipu: ipu dmfc normal mode: 1 (0 ~ 1), 5B (), 5F (6, 7) imx-ipuv3 282130.ipu: ipu dmfc normal mode: 1 (0 ~ 1), 5B (), 5F (6, 7) MIPI CI2 driver module loadedAdvanced Linux Sound Architecture Driver Initialized. listen 80211: Calling CRDA to update world regulatory domainSwitching to clocksource tables: Registered protocol family 2TCP established hash table entries: 8192 (order: 4, 65536 bytes) TCP bind hash table entries: 8192 (order: 4, 65536 bytes) TCP: Hash tables configured (established 8192 bind 8192) TCP: reno registeredUDP hash table entries: 512 (order: 2, 16384 bytes) UDP-Lite hash table entries: 512 (order: 2, 16384 bytes) NET: Registered protocol family 1RPC: Registered named UNIX socket transport module. RPC: Registered udp transport module. RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters availablepureg-dummy: no parametersimx6_busfreq busfreq.15: DDR medium rate not supported. bus freq driver module loadedVFS: Disk quotas dquot_6.5.2Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) NFS: Registering the id_resolver key typeKey type id_resolver registeredKey type id_legacy limit: version 2.2. (NAND) 2001-2006 Red Hat, Inc. fuse init (API version 7.22) msgmni has been set to 2002io scheduler noop registeredio scheddio deadline registeredio scheduler cfq registered (default) imx-weim 21b8000. weim: WEIM driver registered. mxc_mipi_dsi 21e0000. mipi: I. mx mipi dsi driver probedMIPI DSI driver module loadedmxc_sdc_fb fb.23: register mxc display driver lcdConsole: switching to color frame buffer device 100x30imx-sdma 20ec000. sdma: no iram assigned, using external memimx-sdma 20ec000. sdma: loaded firmware 1.1imx-sdma 20ec000. sdma: initializedSerial: IMX driver2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 58) is a IMXconsole [ttymxc0] enabled21e8000. serial: ttymxc1 at MMIO 0x21e8000 (irq = 59) is a IMX21ec000. serial: ttymxc2 at MMIO 0x21ec000 (irq = 60) is a IMX21f0000. serial: ttymxc3 at MMIO 0x21f0000 (irq = 61) is a IMX21f4000. serial: ttymxc4 at MMIO 0x21f4000 (irq = 62) is a IMXserial: Freescale lpuart driver [drm] Initialized drm 1.1.0 20060810 [drm] Initialized vivante 1.0.0 20120216 on minor 0brd: module loadedloop: module loadedCAN device driver interfaceflexcan 2090000.can: device registered (reg_base = c0a28000, irq = 142) fec 2188000. ethernet (unregistered net_device): Invalid MAC address: 00: 00: 00: 00: 00: 00fec 2188000. ethernet (unregistered net_device): Using random MAC address: 3a: bb: 80: a1: c6: b2libphy: fec_enet_mii_bus: probedfec 2188000. ethernet eth0: registered primary privilege device 0ehci_hcd: USB 2.0 'enabled' Host Controller (EHCI) Driverusbcore: registered new interface driver usb-storageci_hdrc connector: doesn't support effecci_hdrc.1: EHCI Host restart failed: new USB bus registered, assigned bus number 1ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00hub 1-0. 0: USB hub foundhub 1-0: 1. 0: 1 port detectedmousedev: PS/2 mouse device common for all micei2c-core: driver [isl29023] using legacy suspend methodi2c-core: driver [isl29023] using legacy resume methodsnvs_rtc 20cc034. snvs-rtc-lp: rtc core: registered 20cc034. snvs-rtc-lp as rtc0i2c/dev entries driveri2c-core: driver [mag3110] using legacy suspend methodi2c-core: driver [mag3110] using legacy resume methodimx2-wdt 20bc000. wdog: IMX2 + Watchdog Timer enabled. timeout = 60 s (nowayout = 0) cpuidle: using governor laddercpuidle: using governor menusdhci: Secure Digital Host Controller Interface driversdhci: Copyright (c) Pierre Ossmansdhci-pltfm: SDHCI platform and OF driver helpermmc0: no vqmmc regulator foundmmc0: no vmmc regulator foundmmc0: SDHCI controller on 2194000. usdhc [2194000. usdhc] using ADMAmmc1: no vqmmc regulator foundmmc1: no vmmc regulator foundmmc1: SDHCI controller on 219c000. usdhc [219c000. usdhc] using ADMAmmc0: new high speed SDHC card at address e624mmcblk0: mmc0: e624 SS08G 7.40 GiB mmcblk0: p1mmc1: BKOPS_EN bit is not setusb 1-1: new high-speed USB device number 2 using failed: new high speed ddr mmc card at address 0001mmcblk1: mmc1: 0001 008G92 7.28 GiB mmcblk1boot0: mmc1: 0001 008G92 partition 1 4.00 failed: mmc1: 0001 008G92 partition 2 4.00 partition: mmc1: 0001 008G92 partition 3 512 KiB mmcblk1: p1 mmcblk1boot1: unknown partition table mmcblk1boot0: unknown partition tablehub 1. 0: USB hub foundhub 1-1:1. 0: 4 ports detectedGalcore version 4.6.9.9754mxc _ vdoa 21e4000. vdoa: I. MX Video Data Order Adapter (VDOA) driver probedmxc_asrc 2034000. asrc: mxc_asrc registeredmxc_vpu 2040000.vpu: VPU initializedleds-gpio gpio-leds.20: pins are not configured from the drivercaam 2100000. caam: device ID = 0x0a1600000000000 (Era-524) caam 2100000. caam: job rings = 2, qi = 0 caam 2100000. caam: authenc-hmac-md5-cbc-aes-caamcaam 2100000. caam: authencesn-hmac-md5-cbc-aes-caamcaam 2100000. caam: authenc-hmac-sha1-cbc-aes-caamcaam 2100000. caam: authencesn-hmac-sha1-cbc-aes-caamcaam 2100000. caam: authenc-hmac-sha224-cbc-aes-caamcaam 2100000. caam: authencesn-hmac-sha224-cbc-aes-caamcaam 2100000. caam: authenc-hmac-sha256-cbc-aes-caamcaam 2100000. caam: authencesn-hmac-sha256-cbc-aes-caamcaam 2100000. caam: authenc-hmac-md5-cbc-des3_ede-caamcaam 2100000. caam: authencesn-hmac-md5-cbc-des3_ede-caamcaam 2100000. caam: authenc-hmac-sha1-cbc-des3_ede-caamcaam 2100000. caam: authencesn-hmac-sha1-cbc-des3_ede-caamcaam 2100000. caam: authenc-hmac-sha224-cbc-des3_ede-caamcaam 2100000. caam: authencesn-hmac-sha224-cbc-des3_ede-caamcaam 2100000. caam: authenc-hmac-sha256-cbc-des3_ede-caamcaam 2100000. caam: authencesn-hmac-sha256-cbc-des3_ede-caamcaam 2100000. caam: authenc-hmac-md5-cbc-des-caamcaam 2100000. caam: authencesn-hmac-md5-cbc-des-caamcaam 2100000. caam: authenc-hmac-sha1-cbc-des-caamcaam 2100000. caam: authencesn-hmac-sha1-cbc-des-caamcaam 2100000. caam: authenc-hmac-sha224-cbc-des-caamcaam 2100000. caam: authencesn-hmac-sha224-cbc-des-caamcaam 2100000. caam: authenc-hmac-sha256-cbc-des-caamcaam 2100000. caam: authencesn-hmac-sha256-cbc-des-caamcaam 2100000. caam: ecb-des-caamca 2100000. caam: ecb-arc4-caamcaam 2100000. caam: ecb-aes-caamca 2100000. caam: ctr-aes-caamca 2100000. caam: cbc-aes-caamca 2100000. caam: ecb-des3-caamcaam 2100000. caam: cbc-3des-caamcaam 2100000. caam: cbc-des-caamca 2100000. caam: fsl, sec-v4.0 algorithms registered in/proc/cryptoplatform 2101000. jr0: registering rng-caamplatform caam_sm: caam_sm_test: 8-byte key test match OKplatform caam_sm: caam_sm_test: 16-byte key test match OKplatform caam_sm: caam_sm_test: 32-byte key test match OKplatform caam_secvio.25: security violation service handlers armedusbcore: registered new interface driver usbhidusbhid: usb hid core driveri2c-core: driver [cs42888] using legacy suspend methodi2c-core: driver [cs42888] using legacy resume methodTCP: cubic registeredNET: Registered protocol family 10sit: IPv6 over IPv4 tunneling driverNET: Registered protocol family 17can: controller area network core (rev 20120528 abi 9) NET: registered protocol family 29can: raw protocol (rev 20120528) can: broadcast manager protocol (rev 20120528 t) can: netlink gateway (rev 20130117) max_hops = 18021q: 802.1Q VLAN Support v1.8Key type dns_resolver registeredVFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4 input: gpio-keys.19 as/devices/soc0/gpio-keys.19/input/input0snvs_rtc 20cc034. snvs-rtc-lp: setting system clock to 1970-01-01 00:00:00 UTC (0) ALSA device list: No soundcards found. EXT4-fs (mmcblk0p1): recovery completeEXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode. opts: (null) VFS: Mounted root (ext4 filesystem) on device 179: 1. devtmpfs: mountedFreeing unused kernel memory: 264 K (80be8000-80c2a000) -------- mount all .......... ---------- Starting mdev ...... please press Enter to activate this console.

So far, the transplantation of the LCD driver has been completed. If you have any questions, please leave a message for discussion.

Author: girlkoo

Link: http://blog.csdn.net/girlkoo/article/details/45772381