• 状态 Resolved
  • 已锁定 已锁定
  • 个回复 10 个回复
  • 名订阅用户 10 名订阅用户
  • 次查看 1441 次查看
  • 用户 0 名在线用户
选项
选项
相关

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AM3358: beaglebone 移植LCD设备数

fei xu
Prodigy 210 points
Part Number: AM3358
Other Parts Discussed in Thread: TPS65217, OPA362, TPD12S015

SDK 版本：ti-processor-sdk-linux-rt-am335x-evm-07.03.00.005

硬件：beaglebone black    BBVIEW+4.3寸屏幕（使用非设备树的老版本SDK测试功能完好）

参考bbview的dts，修改am335x-boneblackd.dts:
#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
#include "am335x-boneblack-common.dtsi"

/ {
    model = "TI AM335x BeagleBone Black";
    compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";


    lcd_cape_pins: pinmux_lcd_cape_pins {
    pinctrl-single,pins = <
        0xa0 0x08    /* lcd_data0.lcd_data0, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xa4 0x08    /* lcd_data1.lcd_data1, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xa8 0x08    /* lcd_data2.lcd_data2, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xac 0x08    /* lcd_data3.lcd_data3, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xb0 0x08    /* lcd_data4.lcd_data4, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xb4 0x08    /* lcd_data5.lcd_data5, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xb8 0x08    /* lcd_data6.lcd_data6, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xbc 0x08    /* lcd_data7.lcd_data7, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xc0 0x08    /* lcd_data8.lcd_data8, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xc4 0x08    /* lcd_data9.lcd_data9, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xc8 0x08    /* lcd_data10.lcd_data10, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xcc 0x08    /* lcd_data11.lcd_data11, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xd0 0x08    /* lcd_data12.lcd_data12, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xd4 0x08    /* lcd_data13.lcd_data13, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xd8 0x08    /* lcd_data14.lcd_data14, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xdc 0x08    /* lcd_data15.lcd_data15, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
        0xe0 0x00    /* lcd_vsync.lcd_vsync, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
        0xe4 0x00    /* lcd_hsync.lcd_hsync, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
        0xe8 0x00    /* lcd_pclk.lcd_pclk, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
        0xec 0x00    /* lcd_ac_bias_en.lcd_ac_bias_en, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
    >;
    };

    panel {
        compatible = "tilcdc,panel";
        pinctrl-names = "default";
        pinctrl-0 = <&lcd_cape_pins>;
        panel-info {
            ac-bias           = <255>;
            ac-bias-intrpt    = <0>;
            dma-burst-sz      = <16>;
            bpp               = <32>;
            fdd               = <0x80>;
            tft-alt-mode      = <0>;
            stn-565-mode      = <0>;
            mono-8bit-mode    = <0>;
            sync-edge         = <0>;
            sync-ctrl         = <1>;
            raster-order      = <0>;
            fifo-th           = <0>;
        };
        display-timings {
            native-mode = <&timing0>;
            timing0: 480x272 {
                hactive         = <480>;
                vactive         = <272>;
                hback-porch     = <44>;
                hfront-porch    = <9>;
                hsync-len       = <5>;
                vback-porch     = <13>;
                vfront-porch    = <4>;
                vsync-len       = <10>;
                clock-frequency = <9000000>;
                hsync-active    = <0>;
                vsync-active    = <0>;
            };
        };
    };

    pwm_bl_pins: pinmux_pwm_bl_pins {
                pinctrl-single,pins = <
                    0x48 0x06       /* gpmc_a2.ehrpwm1a, OMAP_MUX_MODE6 | AM33XX_PIN_OUTPUT */
                >;
    };
    
    backlight {
            compatible      = "pwm-backlight";
            pinctrl-names   = "default";
            pinctrl-0       = <&pwm_bl_pins>;

            pwms = <&ehrpwm1 0 500000 0>;
            pwm-names = "LCD4";
            brightness-levels = <0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100>;
            default-brightness-level = <101>; /* index to the array above */
            status = "okay";
    };


    fb {
            compatible = "ti,am33xx-tilcdc";
            reg = <0x4830e000 0x1000>;
            interrupt-parent = <&intc>;
            interrupts = <36>;
            ti,hwmods = "lcdc";
    };

};

&cpu0_opp_table {
    /*
     * All PG 2.0 silicon may not support 1GHz but some of the early
     * BeagleBone Blacks have PG 2.0 silicon which is guaranteed
     * to support 1GHz OPP so enable it for PG 2.0 on this board.
     */
    oppnitro-1000000000 {
        opp-supported-hw = <0x06 0x0100>;
    };
};
************************************************************************

更新SD卡中的设备树，进入Uboot命令行，可以发现新增了设备：

=> fdt addr 0x88000000
=> fdt list
/ {
compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
interrupt-parent = <0x00000001>;
#address-cells = <0x00000001>;
#size-cells = <0x00000001>;
model = "TI AM335x BeagleBone Black";
chosen {
};
aliases {
};
cpus {
};
opp-table {
};
pmu@4b000000 {
};
soc {
};
ocp {
};
memory@80000000 {
};
leds {
};
fixedregulator0 {
};
clk_mcasp0_fixed {
};
clk_mcasp0 {
};
sound {
};
pinmux_lcd_cape_pins {
};
panel {
};
pinmux_pwm_bl_pins {
};
backlight {
};
};
=>

***************************************************************************************

内核启动后报以下错误：

0.317702] 000: omap_rng 48310000.rng: Random Number Generator ver. 20
[ 0.320149] 000: OF: graph: no port node found in /fb
[ 0.320438] 000: OF: graph: no port node found in /fb
[ 0.320901] 000: OF: graph: no port node found in /fb
[ 0.320918] 000: tilcdc 4830e000.fb: no encoders/connectors found
[ 0.321160] 000: random: fast init done
[ 0.321300] 000: random: crng init done
[ 0.337603] 000: brd: module loaded
[ 0.345666] 000: loop: module loaded
[ 0.351010] 000: libphy: Fixed MDIO Bus: probed
[ 0.408506] 000: davinci_mdio 4a101000.mdio: davinci mdio revision 1.6, bus 0
[ 0.408527] 000: libphy: 4a101000.mdio: probed
[ 0.410134] 000: davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:000
[ 0.410301] 000: cpsw 4a100000.ethernet: initialized cpsw ale version 1.4
[ 0.410312] 000: cpsw 4a100000.ethernet: ALE Table size 1024
[ 0.410414] 000: cpsw 4a100000.ethernet: cpts: overflow check period 500 (ji)
[ 0.410479] 000: cpsw 4a100000.ethernet: Detected MACID = a0:f6:fd:4a:fe:03
[ 0.412479] 000: i2c /dev entries driver
[ 0.414341] 000: sdhci: Secure Digital Host Controller Interface driver
[ 0.414349] 000: sdhci: Copyright(c) Pierre Ossman
[ 0.415574] 000: omap_gpio 44e07000.gpio: Could not set line 6 debounce to 2)
[ 0.415583] 000: omap_hsmmc 48060000.mmc: Got CD GPIO
[ 0.467652] 000: omap_hsmmc 47810000.mmc: RX DMA channel request failed
[ 0.467789] 000: sdhci-pltfm: SDHCI platform and OF driver helper
[ 0.474300] 000: mmc0: host does not support reading read-only switch, assume
[ 0.476187] 000: mmc0: new high speed SDHC card at address 1234
[ 0.476857] 000: davinci-mcasp 48038000.mcasp: IRQ common not found
[ 0.477361] 000: mmcblk0: mmc0:1234 SA32G 28.9 GiB
[ 0.481114] 000: NET: Registered protocol family 10
[ 0.482184] 000: mmcblk0: p1 p2
[ 0.484204] 000: Segment Routing with IPv6
[ 0.484298] 000: sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 0.484974] 000: NET: Registered protocol family 17
[ 0.485349] 000: Key type dns_resolver registered
[ 0.485482] 000: omap_voltage_late_init: Voltage driver support not added
[ 0.486296] 000: Loading compiled-in X.509 certificates
[ 0.568125] 000: tps65217 0-0024: TPS65217 ID 0xe version 1.2
[ 0.569117] 000: tda998x 0-0070: Error -121 writing to cec:0xff
[ 0.569180] 000: tda998x 0-0070: set_page 000a err -121
[ 0.609981] 000: mmc1: new high speed MMC card at address 0001
[ 0.618863] 000: mmcblk1: mmc1:0001 P1XXXX 7.20 GiB
[ 0.619133] 000: mmcblk1boot0: mmc1:0001 P1XXXX partition 1 16.0 MiB
[ 0.619364] 000: mmcblk1boot1: mmc1:0001 P1XXXX partition 2 16.0 MiB
[ 0.619615] 000: mmcblk1rpmb: mmc1:0001 P1XXXX partition 3 128 KiB, chardev )
[ 0.621279] 000: mmcblk1: p1 p2
[ 0.638577] 000: tda998x 0-0070: set_page 000a err -121
[ 0.708530] 000: tda998x 0-0070: set_page 0001 err -121
[ 0.708582] 000: tda998x 0-0070: set_page 0001 err -121
[ 0.708632] 000: tda998x 0-0070: set_page 0200 err -121
[ 0.708682] 000: tda998x 0-0070: set_page 0201 err -121
[ 0.708732] 000: tda998x 0-0070: set_page 0202 err -121
[ 0.708780] 000: tda998x 0-0070: set_page 0203 err -121
[ 0.708829] 000: tda998x 0-0070: set_page 0204 err -121
[ 0.708877] 000: tda998x 0-0070: set_page 0205 err -121
[ 0.708926] 000: tda998x 0-0070: set_page 020e err -121
[ 0.708974] 000: tda998x 0-0070: set_page 0211 err -121
[ 0.709023] 000: tda998x 0-0070: set_page 0207 err -121
[ 0.709071] 000: tda998x 0-0070: set_page 0208 err -121
[ 0.709120] 000: tda998x 0-0070: set_page 0209 err -121
[ 0.709169] 000: tda998x 0-0070: set_page 020a err -121
[ 0.709217] 000: tda998x 0-0070: set_page 0206 err -121
[ 0.709266] 000: tda998x 0-0070: set_page 0027 err -121
[ 0.709314] 000: tda998x 0-0070: set_page 0000 err -121
[ 0.709321] 000: tda998x 0-0070: failed to read version: -121
[ 0.709401] 000: tda998x: probe of 0-0070 failed with error -121
[ 0.709570] 000: omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[ 0.719823] 000: omap_i2c 4819c000.i2c: bus 2 rev0.11 at 100 kHz
[ 0.722854] 000: OF: graph: no port node found in /fb
[ 0.723145] 000: OF: graph: no port node found in /fb
[ 0.723655] 000: OF: graph: no port node found in /fb
[ 0.723676] 000: tilcdc 4830e000.fb: no encoders/connectors found
[ 0.724675] 000: OF: graph: no port node found in /fb
[ 0.724920] 000: OF: graph: no port node found in /fb
[ 0.725321] 000: OF: graph: no port node found in /fb

********************************************************************************

正常进入系统，但LCD没有点亮，请问需要重新编译内核么？

  • 0 回复 Shine
    Prodigy 210 points

      22.755159] 000: OF: graph: no port node found in /ocp/interconnect@480000000
    [   22.755381] 000: OF: graph: no port node found in /ocp/interconnect@480000000
    [   22.755922] 000: OF: graph: no port node found in /ocp/interconnect@480000000
    [   22.755946] 000: tilcdc 4830e000.lcdc: no encoders/connectors found          
    [   22.758443] 000: OF: graph: no port node found in /ocp/interconnect@480000000
    [   22.758693] 000: OF: graph: no port node found in /ocp/interconnect@480000000
    [   22.767731] 000: OF: graph: no port node found in /ocp/interconnect@480000000
    [   22.767756] 000: tilcdc 4830e000.lcdc: no encoders/connectors found          
    [   22.833058] 000: musb-hdrc musb-hdrc.1: MUSB HDRC host driver       

     还会有这个问题，evm和bbb有什么区别么？

  • 0 回复 Shine
    Prodigy 210 points

    tilcdc 4830e000.lcdc: no encoders/connectors found

    请问这个问题怎么解决？

  • 0 回复 fei xu
    TI__Guru**** 357097 points

    新的SDK使用DRM driver，老版本的使用的是 fbdev driver，请看下面的帖子是否有帮助。
    https://e2echina.ti.com/support/processors/f/processors-forum/191405/beagleboneblack-lcd/589304#589304

  • 0 回复 Shine
    Prodigy 210 points

    这是我修改后的设备树：


    #include "am33xx.dtsi"
    #include "am335x-bone-common.dtsi"
    #include "am335x-boneblack-common.dtsi"


    / {
        model = "TI AM335x BeagleBone Black";
        compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";

        panel {
            compatible = "tilcdc,panel";
            pinctrl-names = "default";
            pinctrl-0 = <&lcd_cape_pins>;
            backlight = <&lcd_backlight>;
            status = "okay";
            

            panel-info {
                ac-bias           = <255>;
                ac-bias-intrpt    = <0>;
                dma-burst-sz      = <16>;
                bpp               = <32>;
                fdd               = <0x80>;
                tft-alt-mode      = <0>;
                stn-565-mode      = <0>;
                mono-8bit-mode    = <0>;
                sync-edge         = <0>;
                sync-ctrl         = <1>;
                raster-order      = <0>;
                fifo-th           = <0>;
            };
            display-timings {
                native-mode = <&timing0>;
                timing0: 480x272 {
                    hactive         = <480>;
                    vactive         = <272>;
                    hback-porch     = <44>;
                    hfront-porch    = <9>;
                    hsync-len       = <5>;
                    vback-porch     = <13>;
                    vfront-porch    = <4>;
                    vsync-len       = <10>;
                    clock-frequency = <9000000>;
                    hsync-active    = <0>;
                    vsync-active    = <0>;
                };
            };
        };

        
        lcd_backlight: backlight {
            status = "okay";
            compatible = "gpio-backlight";
            pinctrl-names = "default";
            pinctrl-0 = <&backlight_pin>;
            gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>;
            enable-gpios = <&gpio1 18 1>;
        };

    };



    &am33xx_pinmux {

        lcd_cape_pins: pinmux_lcd_cape_pins {
        pinctrl-single,pins = <
            0xa0 0x08    /* lcd_data0.lcd_data0, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xa4 0x08    /* lcd_data1.lcd_data1, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xa8 0x08    /* lcd_data2.lcd_data2, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xac 0x08    /* lcd_data3.lcd_data3, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xb0 0x08    /* lcd_data4.lcd_data4, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xb4 0x08    /* lcd_data5.lcd_data5, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xb8 0x08    /* lcd_data6.lcd_data6, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xbc 0x08    /* lcd_data7.lcd_data7, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xc0 0x08    /* lcd_data8.lcd_data8, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xc4 0x08    /* lcd_data9.lcd_data9, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xc8 0x08    /* lcd_data10.lcd_data10, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xcc 0x08    /* lcd_data11.lcd_data11, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xd0 0x08    /* lcd_data12.lcd_data12, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xd4 0x08    /* lcd_data13.lcd_data13, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xd8 0x08    /* lcd_data14.lcd_data14, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xdc 0x08    /* lcd_data15.lcd_data15, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
            0xe0 0x00    /* lcd_vsync.lcd_vsync, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
            0xe4 0x00    /* lcd_hsync.lcd_hsync, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
            0xe8 0x00    /* lcd_pclk.lcd_pclk, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
            0xec 0x00    /* lcd_ac_bias_en.lcd_ac_bias_en, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
        >;
        };

        backlight_pin: backlight_pin_default {
            pinctrl-single,pins = <
            AM33XX_IOPAD(0x848,  MUX_MODE7) /* (R7)gpmc_a2.gpio1[18] (BACKLIGHT PWM) */
            >;
        };

    };


    &lcdc {
        status = "okay";
    };


    &cpu0_opp_table {
        /*
         * All PG 2.0 silicon may not support 1GHz but some of the early
         * BeagleBone Blacks have PG 2.0 silicon which is guaranteed
         * to support 1GHz OPP so enable it for PG 2.0 on this board.
         */
        oppnitro-1000000000 {
            opp-supported-hw = <0x06 0x0100>;
        };
    };

    内核编译选项：

    #
    # OMAPDRM External Display Device Drivers
    #
    # CONFIG_DRM_OMAP_ENCODER_OPA362 is not set
    CONFIG_DRM_OMAP_ENCODER_TPD12S015=y
    CONFIG_DRM_OMAP_DRA7EVM_ENCODER_TPD12S015=y
    CONFIG_DRM_OMAP_CONNECTOR_HDMI=y
    # CONFIG_DRM_OMAP_CONNECTOR_ANALOG_TV is not set
    # CONFIG_DRM_OMAP_PANEL_DSI_CM is not set
    # end of OMAPDRM External Display Device Drivers

    CONFIG_DRM_TILCDC=y
    CONFIG_DRM_QXL=y
    # CONFIG_DRM_BOCHS is not set
    # CONFIG_DRM_VIRTIO_GPU is not set
    # CONFIG_DRM_FSL_DCU is not set
    CONFIG_DRM_STM=y
    CONFIG_DRM_PANEL=y

    感觉基本设置没有问题，内核加载时还是： tilcdc 4830e000.lcdc: no encoders/connectors found 

    我只是用bbb驱动一个RGB LCD，不用HDMI，应该怎么设置？

    我看了sdk的 dt bingdings，LCDC 都是基于 HDMI的

  • 0 回复 Shine
    Prodigy 210 points

    我按照他的方法把tilcdc编译为module，启动后再加载，一样报错的

    root@am335x-evm:/opt#  insmod tilcdc.ko                                         
    [   91.841867] 000: OF: graph: no port node found in /ocp/interconnect@480000000
    [   91.842090] 000: OF: graph: no port node found in /ocp/interconnect@480000000
    root@am335x-evm:/opt# [   91.847144] 000: OF: graph: no port node found in /ocp0
    [   91.847183] 000: tilcdc 4830e000.lcdc: no encoders/connectors found

  • 0 回复 Shine
    Prodigy 210 points

    一直报这个错：pwm-backlight backlight: backlight supply power not found, using dummy regulator

    手动把LCD pwm拉高有显示了，不过没有显示matrix gui

    可是打印信息有加载matrix gui：


    Starting Synchronize System and HW clocks...
    [ OK ] Started Weston Wayland Compositor.
    [ OK ] Started weston.service.
    Starting Matrix GUI...
    Starting telnetd.service...
    [ OK ] Started Simple Network Man…ement Protocol (SNMP) Daemon..
    [ OK ] Started Matrix GUI.
    [ OK ] Started telnetd.service.
    [ OK ] Created slice User Slice of UID 0.
    Starting User Runtime Directory /run/user/0...
    [ OK ] Started User Runtime Directory /run/user/0.
    Starting User Manager for UID 0...
    [ OK ] Started Synchronize System and HW clocks.

  • 0 回复 fei xu
    TI__Guru**** 357097 points

    建议到您到beagleboneboard社区论坛咨询一下。
    https://forum.beagleboard.org/