ns2009 接4线7寸电阻触摸屏。平台是 V3S TINA3.5。 使用tslib 校准后，ts_test 发现总是飞点，手压力不同时，得到的坐标不一样。尤其是屏边缘飞得很厉害。做过这些测试工作：
1，试过脚位兼容的tsc2007 ns2009，没什么改善。
2，试过换2块触摸屏，没什么改善。
3，tslib 开了几种滤波，改善很小。

请教大家，还有啥办法可以再试试？

@kevin_allwinner 大佬，怎么小改。用哪家配置的sdk

我一直按住复位键，然后上电，得到这些log：

[23]BOOT0 commit : 88480af-dirty
[26]set pll start
[28]fix vccio detect value:0xc0
[35]periph0 has been enabled
[38]set pll end
[40][pmu]: bus read error
[42]board init ok
[44]ZQ value = 0x31
[46]get_pmu_exist() = -1
[49]ddr_efuse_type: 0xa
[51]trefi:7.8ms
[53][AUTO DEBUG] single rank and full DQ!
[57]ddr_efuse_type: 0xa
[59]trefi:7.8ms
[62][AUTO DEBUG] rank 0 row = 13
[65][AUTO DEBUG] rank 0 bank = 8
[68][AUTO DEBUG] rank 0 page size = 2 KB
[72]DRAM BOOT DRIVE INFO: V0.33
[75]DRAM CLK = 936 MHz
[77]DRAM Type = 3 (2:DDR2,3:DDR3)
[80]DRAMC read ODT  off.
[83]DRAM ODT value: 0x42.
[85]ddr_efuse_type: 0xa
[88]DRAM SIZE =128 M
[90]dram_tpr4:0x0
[92]PLL_DDR_CTRL_REG:0xf8004d00
[95]DRAM_CLK_REG:0xc0000000
[98][TIMING DEBUG] MR2= 0x20
[105]DRAM simple test OK.
[108]rtc standby flag is 0x0, super standby flag is 0x0
[113]dram size =128
[115]card no is 0
[117]sdcard 0 line count 4
[120][mmc]: mmc driver ver 2021-05-21 14:47
[129][mmc]: Wrong media type 0x0
[132][mmc]: ***Try SD card 0***
[142][mmc]: HSSDR52/SDR25 4 bit
[145][mmc]: 50000000 Hz
[147][mmc]: 60014 MB
[149][mmc]: ***SD/MMC 0 init OK!!!***
[221]Loading boot-pkg Succeed(index=0).
[225]Entry_name        = u-boot
[230]Entry_name        = optee
[234]Entry_name        = dtb
[237]mmc not para
[239]Jump to second Boot.
M/TC: OP-TEE version: 6aef7bb2-dirty (gcc version 5.3.1 20160412 (Linaro GCC 5.3-2016.05)) #1 Fri Jul 23 09:25:11 UTC 2021 arm


U-Boot 2018.05-g24521d6-dirty (Jun 27 2023 - 01:57:03 -0700) Allwinner Technology

[00.292]CPU:   Allwinner Family
[00.295]Model: sun8iw20
I2C:   FDT ERROR:fdt_set_all_pin:[twi0]-->FDT_ERR_BADPATH
FDT ERROR:fdt_set_all_pin:[twi1]-->FDT_ERR_BADPATH
ready
[00.316]DRAM:  128 MiB
[00.319]Relocation Offset is: 04f01000
[00.339]secure enable bit: 0
[00.341]smc_tee_inform_fdt failed with: -65526[00.346]CPU=1008 MHz,PLL6=600 Mhz,AHB=200 Mhz, APB1=100Mhz  MBus=300Mhz
[00.352]gic: sec monitor mode
[00.355]flash init start
[00.357]workmode = 0,storage type = 1
[00.361][mmc]: mmc driver ver uboot2018:2021-11-19 15:38:00
[00.366][mmc]: get sdc_type fail and use default host:tm1.
[00.372][mmc]: can't find node "mmc0",will add new node
[00.377][mmc]: fdt err returned <no error>
[00.381][mmc]: Using default timing para
[00.384][mmc]: SUNXI SDMMC Controller Version:0x50310
[00.403][mmc]: card_caps:0x3000000a
[00.406][mmc]: host_caps:0x3000003f
[00.410]sunxi flash init ok
[00.417]Loading Environment from SUNXI_FLASH... OK
[00.447]Item0 (Map) magic is bad
[00.449]the secure storage item0 copy0 magic is bad
[00.465]Item0 (Map) magic is bad
[00.468]the secure storage item0 copy1 magic is bad
[00.473]Item0 (Map) magic is bad
secure storage read widevine fail
[00.479]secure storage read widevine fail with:-1
secure storage read ec_key fail
[00.486]secure storage read ec_key fail with:-1
secure storage read ec_cert1 fail
[00.493]secure storage read ec_cert1 fail with:-1
secure storage read ec_cert2 fail
[00.501]secure storage read ec_cert2 fail with:-1
secure storage read ec_cert3 fail
[00.508]secure storage read ec_cert3 fail with:-1
secure storage read rsa_key fail
[00.515]secure storage read rsa_key fail with:-1
secure storage read rsa_cert1 fail
[00.523]secure storage read rsa_cert1 fail with:-1
secure storage read rsa_cert2 fail
[00.531]secure storage read rsa_cert2 fail with:-1
secure storage read rsa_cert3 fail
[00.538]secure storage read rsa_cert3 fail with:-1
[00.543]usb burn from boot
delay time 0
weak:otg_phy_config
[00.554]usb prepare ok
[01.357]overtime
[01.360]do_burn_from_boot usb : no usb exist
root_partition is rootfs
set root to /dev/mmcblk0p5
[01.370]update part info
[01.373]update bootcmd
[01.376]change working_fdt 0x43ec0e70 to 0x43ea0e70
disable nand error: FDT_ERR_BADPATH
[01.397]update dts
Hit any key to stop autoboot:  0
[02.579]no vendor_boot partition is found
Android's image name: t113-100ask
[02.590]Starting kernel ...

[02.593][mmc]: MMC Device 2 not found
[02.596][mmc]: mmc 2 not find, so not exit
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.4.61 (qinhao@ubuntu) (arm-openwrt-linux-muslgnueabi-gcc.bin (OpenWrt/Linaro GCC 6.4-2017.11 2017-11) 6.4.1, GNU ld (GNU Binutils) 2.27) #96 SMP PREEMPT Fri Jul 28 00:48:06 UTC 2023
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: sun8iw20
[    0.000000] printk: bootconsole [earlycon0] enabled
[    0.001710] /cpus/cpu@0 missing clock-frequency property
[    0.007046] /cpus/cpu@1 missing clock-frequency property
[    0.099139] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pc not found, using dummy regulator
[    0.109405] spi spi0: spi0 supply spi not found, using dummy regulator
[    0.116110] sunxi_spi_resource_get()2161 - [spi0] SPI MASTER MODE
[    0.122279] sunxi_spi_resource_get()2199 - Failed to get sample mode
[    0.128653] sunxi_spi_resource_get()2204 - Failed to get sample delay
[    0.135085] sunxi_spi_resource_get()2208 - sample_mode:-1431633921 sample_delay:-1431633921
[    0.143520] sunxi_spi_clk_init()2250 - [spi0] mclk 100000000
[    0.149755] sunxi_spi_probe()2663 - [spi0]: driver probe succeed, base c881f000, irq 40
[    0.206032] disp 5000000.disp: 5000000.disp supply vcc-lcd not found, using dummy regulator
[    0.214597] disp 5000000.disp: 5000000.disp supply vcc-pd not found, using dummy regulator
[    0.228173] display_fb_request,fb_id:0
[    0.234403] [DISP] Fb_copy_boot_fb,line:1443:
[    0.234407] no boot_fb0
[    0.241665] disp_al_manager_apply ouput_type:0
[    0.247413] [DISP] lcd_clk_config,line:732:
[    0.247425] disp 0, clk: pll(198000000),clk(198000000),dclk(33000000) dsi_rate(198000000)
[    0.247425]      clk real:pll(288000000),clk(288000000),dclk(48000000) dsi_rate(0)
[    0.247663] sunxi_sid_init()551 - insmod ok
[    0.252451] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pd not found, using dummy regulator
[    0.268340] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pb not found, using dummy regulator
[    0.291532] uart uart3: get regulator failed
[    0.295807] uart uart3: uart3 supply uart not found, using dummy regulator
[    0.302973] sw_console_setup()1808 - console setup baud 115200 parity n bits 8, flow n
▒[    0.486898] [DISP] disp_device_attached_and_enable,line:233:
[    0.486903] attached ok, mgr0<-->dev0
[    0.497402] [DISP] disp_device_attached_and_enable,line:236:
[    0.497410] type:1,mode:0,fmt:rgb,bits:8bits,eotf:4,cs:0 dvi_hdmi:2, range:2 scan:0 ratio:8
[    0.515034] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pe not found, using dummy regulator
[    0.527589] Failed to alloc md5
[    0.531122] eth0: Use random mac address
[    0.535923] sunxi-ehci: EHCI SUNXI driver
[    0.540840] sunxi-ohci: OHCI SUNXI driver
[    0.545988] sunxi cedar version 1.1
[    0.581686] debugfs: Directory '203034c.dummy_cpudai' with parent 'audiocodec' already present!
[    0.591588] [SNDCODEC][sunxi_card_init][583]:card init finished
[    0.617802] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pg not found, using dummy regulator
[    0.629294] sunxi-i2c sunxi-i2c1: sunxi-i2c1 supply twi not found, using dummy regulator
[    0.640322] rtc-rx8010 1-0032: Frequency stop was detected
[    0.646950] rtc-rx8010 1-0032: Frequency stop detected
[    0.653163] rtc-rx8010 1-0032: Frequency stop detected
[    0.658960] rtc-rx8010 1-0032: hctosys: unable to read the hardware clock
[    0.669009] debugfs: Directory '2031000.dmic' with parent 'snddmic' already present!
[    0.679042] get ehci0-controller wakeup-source is fail.
[    0.685014] sunxi ehci0-controller don't init wakeup source
[    0.691335] [sunxi-ehci0]: probe, pdev->name: 4101000.ehci0-controller, sunxi_ehci: 0xc0b5e2b0, 0x:c8885000, irq_no:38
[    0.703356] [sunxi-ehci0]: Not init ehci0
[    0.708191] get ohci0-controller wakeup-source is fail.
[    0.714158] sunxi ohci0-controller don't init wakeup source
[    0.720441] [sunxi-ohci0]: probe, pdev->name: 4101400.ohci0-controller, sunxi_ohci: 0xc0b5e540
[    0.730124] [sunxi-ohci0]: Not init ohci0
[    0.734944] get ehci1-controller wakeup-source is fail.
[    0.740908] sunxi ehci1-controller don't init wakeup source
[    0.747206] [sunxi-ehci1]: probe, pdev->name: 4200000.ehci1-controller, sunxi_ehci: 0xc0b5e7d0, 0x:c88a1000, irq_no:3a
[    0.759426] sunxi-ehci 4200000.ehci1-controller: 4200000.ehci1-controller supply hci not found, using dummy regulator
[    0.798311] get ohci1-controller wakeup-source is fail.
[    0.804320] sunxi ohci1-controller don't init wakeup source
[    0.810601] [sunxi-ohci1]: probe, pdev->name: 4200400.ohci1-controller, sunxi_ohci: 0xc0b5ea60
[    0.820515] sunxi-ohci 4200400.ohci1-controller: 4200400.ohci1-controller supply hci not found, using dummy regulator
[    0.902814] sun8iw20-pinctrl 2000000.pinctrl: pin PB6 already requested by 2500c00.uart; cannot claim for 2000000.pinctrl:38
[    0.915482] sun8iw20-pinctrl 2000000.pinctrl: pin-38 (2000000.pinctrl:38) status -22
[    0.926396] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    0.926755] clk: Not disabling unused clocks
[    0.940902] alloc_fd: slot 0 not NULL!
[    0.945472] VFS: Cannot open root device "mmcblk0p5" or unknown-block(0,0): error -6
[    0.954185] Please append a correct "root=" boot option; here are the available partitions:
[    0.963570] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    0.972845] CPU0: stopping
[    0.975883] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.61 #96
[    0.982617] Hardware name: Generic DT based system
[    0.988010] [<c010de4c>] (unwind_backtrace) from [<c010a5f4>] (show_stack+0x10/0x14)
[    0.996703] [<c010a5f4>] (show_stack) from [<c067cf68>] (dump_stack+0x88/0xa4)
[    1.004810] [<c067cf68>] (dump_stack) from [<c010c234>] (handle_IPI+0xe4/0x180)
[    1.013015] [<c010c234>] (handle_IPI) from [<c0341594>] (gic_handle_irq+0x70/0x78)
[    1.021511] [<c0341594>] (gic_handle_irq) from [<c01021cc>] (__irq_svc+0x6c/0xa8)
[    1.029903] Exception stack(0xc0a01f40 to 0xc0a01f88)
[    1.035572] 1f40: 000004a8 c76b9334 00000000 c0114740 00000001 c0a00000 c0a03de8 c0a03e24
[    1.044748] 1f60: c0a43000 c77ff600 c09280c0 00000000 c0b497d0 c0a01f90 c0107f48 c0107f38
[    1.053919] 1f80: 60000113 ffffffff
[    1.057836] [<c01021cc>] (__irq_svc) from [<c0107f38>] (arch_cpu_idle+0x1c/0x38)
[    1.066139] [<c0107f38>] (arch_cpu_idle) from [<c013d3dc>] (do_idle+0xd4/0x128)
[    1.074342] [<c013d3dc>] (do_idle) from [<c013d6c8>] (cpu_startup_entry+0x18/0x20)
[    1.082840] [<c013d6c8>] (cpu_startup_entry) from [<c0900c74>] (start_kernel+0x358/0x3e8)
[    1.092018] [<c0900c74>] (start_kernel) from [<00000000>] (0x0)
[    1.098664] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]---

自己做的板：
spi上也挂了一个nand。
实际构建系统的是TF卡启动。每次按复位键后，能启动成功。
板子上电完全没反应，控制台没输出，按复位键后可以正常启动。

大佬们，请教一下这个问题，我应该检查什么方向？

@qinlinbin 实测可以解决问题。 多谢

我改了以后，初始化i2c1的时候，不再提示PG9错误。但是实际通讯的时候 PG9 没有波形。楼主改了以后，I2C1正常了吗？

SUNXI_PIN(SUNXI_PINCTRL_PIN(G, 9),
		SUNXI_FUNCTION(0x0, "gpio_in"),
		SUNXI_FUNCTION(0x1, "gpio_out"),
		SUNXI_FUNCTION(0x2, "uart1"),		/* CTS */
		SUNXI_FUNCTION(0x3, "twi1"),		/* SDA */
		SUNXI_FUNCTION(0x4, "gmac0"),		/* RXD3/NULL */
		SUNXI_FUNCTION(0x5, "uart3"),		/* RX */
		SUNXI_FUNCTION_IRQ_BANK(0xE, 5, 9),
		SUNXI_FUNCTION(0xF, "io_disabled")),

@whycan 晕哥，这颗挺多人用的。 请问这个都怎么解决？ 是有更新的驱动吗？ 还是用 tslib滤波？ 我已经试了tslib滤波几种参数组合了 没什么效果。

ns2009 接4线7寸电阻触摸屏。平台是 V3S TINA3.5。 使用tslib 校准后，ts_test 发现总是飞点，手压力不同时，得到的坐标不一样。尤其是屏边缘飞得很厉害。做过这些测试工作：
1，试过脚位兼容的tsc2007 ns2009，没什么改善。
2，试过换2块触摸屏，没什么改善。
3，tslib 开了几种滤波，改善很小。

请教大家，还有啥办法可以再试试？

@whycan 中断次数没有增加。 硬件确定没问题，有脉冲。 之前用其他驱动，轮训这个IO，是可以驱动用起来的。 现在想正常用中断去做，发现中断向量 与uart0 重复，不知道是不是这个原因，导致中断进不去。

@whycan 次数没有增加

@whycan PG0 192