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xsran

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注册时间： 2022-04-23

已发帖子： 5

积分： 50

请教一下f1c100s 外接st7789 但是驱动不生效的问题

大家好，我在尝试给f1c100s外接一个st7789的屏幕，修改了设备树和驱动文件，但是感觉驱动并没有跑起来，请求大家帮忙看看。

linux源码修改了2个文件：

分别修改如下：

dmesg：

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.15.0-rc8-licheepi-nano+ (xsr@linux) (gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1)) #4 Sat Apr 23 03:31:11 CST 2022
[    0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=0005317f
[    0.000000] CPU: VIVT data cache, VIVT instruction cache
[    0.000000] OF: fdt: Machine model: Lichee Pi Nano
[    0.000000] Memory policy: Data cache writeback
[    0.000000] On node 0 totalpages: 8192
[    0.000000]   Normal zone: 64 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 8192 pages, LIFO batch:0
[    0.000000] random: fast init done
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 8128
[    0.000000] Kernel command line: console=ttyS0,115200 panic=5 rootwait root=/dev/mtdblock3 rw rootfstype=jffs2
[    0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Memory: 22676K/32768K available (6144K kernel code, 237K rwdata, 1412K rodata, 1024K init, 245K bss, 10092K reserved, 0K cma-reserved, 0K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
[    0.000000]     vmalloc : 0xc2800000 - 0xff800000   ( 976 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xc2000000   (  32 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0x(ptrval) - 0x(ptrval)   (7136 kB)
[    0.000000]       .init : 0x(ptrval) - 0x(ptrval)   (1024 kB)
[    0.000000]       .data : 0x(ptrval) - 0x(ptrval)   ( 238 kB)
[    0.000000]        .bss : 0x(ptrval) - 0x(ptrval)   ( 246 kB)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000051] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[    0.000123] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[    0.000650] Console: colour dummy device 80x30
[    0.000739] Calibrating delay loop... 203.16 BogoMIPS (lpj=1015808)
[    0.070255] pid_max: default: 32768 minimum: 301
[    0.070581] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.070631] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.072201] CPU: Testing write buffer coherency: ok
[    0.074097] Setting up static identity map for 0x80100000 - 0x80100058
[    0.076647] devtmpfs: initialized
[    0.083488] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.083559] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.083853] pinctrl core: initialized pinctrl subsystem
[    0.086159] NET: Registered protocol family 16
[    0.088138] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.089940] cpuidle: using governor menu
[    0.117608] SCSI subsystem initialized
[    0.118006] usbcore: registered new interface driver usbfs
[    0.118174] usbcore: registered new interface driver hub
[    0.118390] usbcore: registered new device driver usb
[    0.118804] pps_core: LinuxPPS API ver. 1 registered
[    0.118830] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.118892] PTP clock support registered
[    0.119361] Advanced Linux Sound Architecture Driver Initialized.
[    0.121098] clocksource: Switched to clocksource timer
[    0.150333] NET: Registered protocol family 2
[    0.152033] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.152112] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.152164] TCP: Hash tables configured (established 1024 bind 1024)
[    0.152521] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.152593] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.153113] NET: Registered protocol family 1
[    0.154457] RPC: Registered named UNIX socket transport module.
[    0.154502] RPC: Registered udp transport module.
[    0.154519] RPC: Registered tcp transport module.
[    0.154535] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.156880] NetWinder Floating Point Emulator V0.97 (double precision)
[    0.158922] Initialise system trusted keyrings
[    0.159538] workingset: timestamp_bits=30 max_order=13 bucket_order=0
[    0.177805] NFS: Registering the id_resolver key type
[    0.177883] Key type id_resolver registered
[    0.177904] Key type id_legacy registered
[    0.178021] jffs2: version 2.2. (NAND)  2001-2006 Red Hat, Inc.
[    0.193199] Key type asymmetric registered
[    0.193244] Asymmetric key parser 'x509' registered
[    0.193441] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    0.193470] io scheduler noop registered
[    0.193489] io scheduler deadline registered
[    0.194284] io scheduler cfq registered (default)
[    0.194323] io scheduler mq-deadline registered
[    0.194342] io scheduler kyber registered
[    0.195528] sun4i-usb-phy 1c13400.phy: Couldn't request ID GPIO
[    0.205978] suniv-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[    0.394855] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[    0.402189] console [ttyS0] disabled
[    0.422458] 1c25000.serial: ttyS0 at MMIO 0x1c25000 (irq = 23, base_baud = 6250000) is a 16550A
[    0.895799] console [ttyS0] enabled
[    0.906569] panel-simple panel: panel supply power not found, using dummy regulator
[    0.916099] SCSI Media Changer driver v0.25
[    0.924232] m25p80 spi0.0: xt25f128b (16384 Kbytes)
[    0.929193] 4 ofpart partitions found on MTD device spi0.0
[    0.934797] Creating 4 MTD partitions on "spi0.0":
[    0.939617] 0x000000000000-0x000000100000 : "u-boot"
[    0.947379] 0x000000100000-0x000000110000 : "dtb"
[    0.954983] 0x000000110000-0x000000510000 : "kernel"
[    0.962648] 0x000000510000-0x000001000000 : "rootfs"
[    0.970958] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.977630] ehci-platform: EHCI generic platform driver
[    0.983235] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.989466] ohci-platform: OHCI generic platform driver
[    0.995261] usbcore: registered new interface driver usb-storage
[    1.002401] udc-core: couldn't find an available UDC - added [g_cdc] to list of pending drivers
[    1.011503] i2c /dev entries driver
[    1.071240] sunxi-mmc 1c0f000.mmc: base:0x4df2d6d8 irq:19
[    1.078866] usbcore: registered new interface driver usbhid
[    1.084576] usbhid: USB HID core driver
[    1.107767] NET: Registered protocol family 17
[    1.112650] Key type dns_resolver registered
[    1.119444] Loading compiled-in X.509 certificates
[    1.137139] sun4i-drm display-engine: bound 1e60000.display-backend (ops 0xc0739fc4)
[    1.146103] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc07392a8)
[    1.153890] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.160488] [drm] No driver support for vblank timestamp query.
[    1.299609] Console: switching to colour frame buffer device 100x30
[    1.339288] sun4i-drm display-engine: fb0:  frame buffer device
[    1.346589] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine on minor 0
[    1.355854] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto supply vcc not found, using dummy regulator
[    1.367833] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[    1.373778] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 1
[    1.384064] hub 1-0:1.0: USB hub found
[    1.388009] hub 1-0:1.0: 1 port detected
[    1.393712] using random self ethernet address
[    1.398253] using random host ethernet address
[    1.404724] usb0: HOST MAC e6:b0:3a:29:22:14
[    1.409122] usb0: MAC 96:9c:4f:d2:59:ea
[    1.413244] g_cdc gadget: CDC Composite Gadget, version: King Kamehameha Day 2008
[    1.420727] g_cdc gadget: g_cdc ready
[    1.425577] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    1.443786] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    1.450613] vcc3v3: disabling
[    1.453704] ALSA device list:
[    1.456683]   #0: Loopback 1
[    1.460520] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    1.469282] cfg80211: failed to load regulatory.db
[    1.576920] random: crng init done
[    2.994345] g_cdc gadget: high-speed config #1: CDC Composite (ECM + ACM)
[    4.032053] VFS: Mounted root (jffs2 filesystem) on device 31:3.
[    4.040065] devtmpfs: mounted
[    4.049255] Freeing unused kernel memory: 1024K

查看设备树：

完整设备树：

// SPDX-License-Identifier: (GPL-2.0+ OR X11)
/*
 * Copyright 2018 Icenowy Zheng <icenowy@aosc.io>
 */

/dts-v1/;
#include "suniv-f1c100s.dtsi"

#include <dt-bindings/gpio/gpio.h>

/ {
        model = "Lichee Pi Nano";
        compatible = "licheepi,licheepi-nano", "allwinner,suniv-f1c100s",
                     "allwinner,suniv";

        aliases {
                serial0 = &uart0;
                spi0 = &spi0;
                spi1 = &spi1;
        };

        chosen {
                stdout-path = "serial0:115200n8";
        };

        panel: panel {
                compatible = "lg,lb070wv8", "simple-panel";
                #address-cells = <1>;
                #size-cells = <0>;
                enable-gpios = <&pio 4 6 GPIO_ACTIVE_HIGH>;

                port@0 {
                        reg = <0>;
                        #address-cells = <1>;
                        #size-cells = <0>;

                        panel_input: endpoint@0 {
                                reg = <0>;
                                remote-endpoint = <&tcon0_out_lcd>;
                        };
                };
        };

        reg_vcc3v3: vcc3v3 {
                compatible = "regulator-fixed";
                regulator-name = "vcc3v3";
                regulator-min-microvolt = <3300000>;
                regulator-max-microvolt = <3300000>;
        };
};

&de {
        status = "okay";
};

&mmc0 {
        vmmc-supply = <&reg_vcc3v3>;
        bus-width = <4>;
        broken-cd;
        status = "okay";
};

&otg_sram {
        status = "okay";
};
&spi0 {
        pinctrl-names = "default";
        pinctrl-0 = <&spi0_pins_a>;
        status = "okay";
    spi-max-frequency = <50000000>;

        flash: w25q128@0 {
        #address-cells = <1>;
        #size-cells = <1>;
        compatible = "winbond,xt25f128b", "jedec,spi-nor";
        reg = <0>;
        spi-max-frequency = <50000000>;
        partitions {
            compatible = "fixed-partitions";
            #address-cells = <1>;
            #size-cells = <1>;

            partition@0 {
                label = "u-boot";
                reg = <0x000000 0x100000>;
                read-only;
            };

            partition@100000 {
                label = "dtb";
                reg = <0x100000 0x10000>;
                read-only;
            };

            partition@110000 {
                label = "kernel";
                reg = <0x110000 0x400000>;
                read-only;
            };

            partition@510000 {
                label = "rootfs";
                reg = <0x510000 0xAF0000>;
            };
        };
    };
};


&spi1 {
    pinctrl-names = "default";
    pinctrl-0 = <&spi1_pins>;
    status = "okay";
    spi-max-frequency = <32000000>;
    // bias-pull-up;

    st7789v@0 {
        status = "okay";
        compatible = "sitronix,st7789v";
               reg = <0>;
               spi-max-frequency = <32000000>;
               rotate = <0>;
               spi-cpol;
               spi-cpha;
               rgb;
               fps = <30>;
               buswidth = <8>;
               reset-gpios=<&pio 4 4 GPIO_ACTIVE_LOW>;
               dc-gpios  =<&pio 4 5 GPIO_ACTIVE_LOW>;
               debug =<1>;
        };
};

&pio {
    spi1_pins: spi1-pins{
         pins = "PA2","PA0","PA3","PA1";
         function = "spi1";
    };
};
&tcon0 {
        pinctrl-names = "default";
        pinctrl-0 = <&lcd_rgb666_pins>;
        status = "okay";
};

&tcon0_out {
        tcon0_out_lcd: endpoint@0 {
                reg = <0>;
                remote-endpoint = <&panel_input>;
        };
};

&uart0 {
        pinctrl-names = "default";
        pinctrl-0 = <&uart0_pins_a>;
        status = "okay";
};

&usb_otg {
        dr_mode = "otg";
        status = "okay";
};

&usbphy {
        usb0_id_det-gpio = <&pio 4 2 GPIO_ACTIVE_HIGH>; /* PE2 */
        status = "okay";
};

请大家帮我看看这个问题，谢谢。

以及，我有几个疑问：
1.我看别的帖子里面日志是有很多详细信息的，我该如何打开更加详细的日志呢
2.我的驱动本身已经有荔枝派nano的RGB接口的屏幕的frame buffer驱动，这个驱动和st7789的驱动能否共存？
3.有没有可能是硬件接线的问题，硬件接线不对，会不会也会导致这里出问题，谢谢

xsran

会员

注册时间： 2022-04-23

已发帖子： 5

积分： 50

Re: 请教一下f1c100s 外接st7789 但是驱动不生效的问题

@romanljw

我也是参考了这个大佬的文章进行配置的， A31我也打开了，但是我现在完全没有fbtft的信息输出。

xsran

会员

注册时间： 2022-04-23

已发帖子： 5

积分： 50

Re: 请教一下f1c100s 外接st7789 但是驱动不生效的问题

我的还是4.x的版本，lychee pi nano官网上的那个版本