Topics created by haiqianghuang69

@yuzukitsuru
1.大佬是用什么sdk的呀？我用的是韦东山提供的buildroot工程neza-d1-buildroot，
2.然后感觉那个uboot有点问题，不会遍历dts中第二层级的device，我在源码上参照那个clocks的来遍历第二层，第三层的device，在uboot 输入dm tree可以正常显示device对应的层级关系。只是第三层级的spinor没有绑定成功

///drivers/core/root.c 350 /* bind fixed-clock */ 351 node = ofnode_path("/clocks"); 352 /* if no DT "clocks" node, no need to go further */ ~ 353 if (!ofnode_valid(node)){ + 354 pr_debug("debug, not found ofnode_valid node\n"); 355 return ret; + 356 } + 364 + 365 //直接进入到这里执行 + 366 pr_debug("debug, dm_scan_fdt_node\n\n"); 367 ret = dm_scan_fdt_node(gd->dm_root, gd->fdt_blob, node.of_offset, 368 pre_reloc_only); 369 if (ret) ~ 370 pr_debug("dm_scan_fdt_node() failed: %d\n", ret); + 371 + 372 + 373 pr_debug("\n\n"); + 374 node = ofnode_path("/hello_dts_name@1234"); + 375 if (!ofnode_valid(node)){ + 376 pr_debug("find node faile\n"); + 377 return ret; + 378 } + 379 + 380 ret = uclass_get_device_by_name(UCLASS_HELLO_CJ, "hello_dts_name@1234", &getdev); + 381 if (ret){ + 382 pr_debug("debug, can not get device hello\n"); + 383 ret = uclass_get_device_by_driver(UCLASS_HELLO_CJ, DM_GET_DRIVER(hello_drv), &getdev); + 384 if (ret){ + 385 pr_debug("debug, stil can not find device\n"); + 386 } + 387 } + 388 ret = dm_scan_fdt_node(getdev, gd->fdt_blob, node.of_offset,pre_reloc_only); + 389 if (ret){ + 390 pr_debug("dm_scan_fdt node faile\n"); + 391 }

修改后的串口dm tree打印

=> dm tree Class Probed Driver Name ---------------------------------------- root [ + ] root_drive root_driver hello_cj_c [ + ] hello_drv |-- hello_dts_name@1234 hello_cj_c [ ] hello_drv_ | `-- hello_dts_child@5678 spi_flash [ ] spi_flash_ `-- spi@04026000 =>

uboot的spi1 dts配置

//uboot-origin_master/arch/riscv/dts/sun20iw1p1-soc-system.dts 6 /dts-v1/; 11 / { 12 model = "sun20iw1"; 13 compatible = "allwinner,riscv", "arm,sun20iw1p1"; 14 #address-cells = <2>; 15 #size-cells = <2>; + 18 hellohqh: hello_dts_name@1234 { + 19 + 20 #address-cells = <1>; + 21 #size-cells = <0>; + 22 compatible = "hello_dts"; + 23 reg = <0x02000000>; + 24 pinctrl-names = "default", "sleep"; + 25 pinctrl-0 = <&gpiotest_pins>; + 26 + 27 hellohqh1: hello_dts_child@5678 { + 28 compatible = "hello_child_dts"; + 29 reg = <0x31>; + 30 hellohqh2: hello_dts_child_child@99991 { + 31 compatible = "hello_child_child_dts"; + 32 + 33 }; + 34 }; + 35 }; 37 soc: soc@29000000 { 38 #address-cells = <2>; 39 #size-cells = <2>; + 427 spi1: spi@04026000 { + 428 //#address-cells = <1>; + 429 //#size-cells = <0>; + 430 compatible = "allwinner,sun20i-spi"; + 431 device_type = "spi1"; + 432 reg = <0x0 0x04026000 0x0 0x1000>; + 433 //interrupts-extended = <&plic0 31 IRQ_TYPE_LEVEL_HIGH>; + 434 //clocks = <&ccu CLK_PLL_PERIPH0>, <&ccu CLK_SPI0>, <&ccu CLK_BUS_SPI0>; + 435 //clock-names = "pll", "mod", "bus"; + 436 //resets = <&ccu RST_BUS_SPI0>; + 437 clock-frequency = <100000000>; + 438 pinctrl-names = "default", "sleep"; + 439 spi1_cs_number = <1>; + 440 spi1_cs_bitmap = <1>; + 441 spi_slave_mode = <0>; + 442 //dmas = <&dma 22>, <&dma 22>; + 443 //dma-names = "tx", "rx"; + 444 pinctrl-0 = <&spi1_pins_a &spi1_pins_b>; + 445 pinctrl-1 = <&spi1_pins_c>; + 446 status = "okay"; + 447 spi-nor { + 448 compatible = "jedec,spi-nor"; + 449 spi-max-frequency=<0x5F5E100>; + 450 reg = <0x0>; + 451 spi-rx-bus-width=<0x01>; + 452 spi-tx-bus-width=<0x01>; + 453 status="okay"; + 454 }; + 455 }; + 273 spi1_pins_a: spi1@0 { + 274 allwinner,pins = "PD11", "PD12", "PD13","PD14", "PD15"; + 275 allwinner,pname = "spi1_sclk", "spi1_mosi","spi1_miso", "spi1_hold", "spi1_wp"; + 276 allwinner,function = "spi1"; + 277 allwinner,muxsel = <4>; + 278 allwinner,drive = <1>; + 279 allwinner,pull = <0>; + 280 }; + 281 + 282 spi1_pins_b: spi1@1 { + 283 allwinner,pins = "PD10"; + 284 allwinner,pname = "spi1_cs0"; + 285 allwinner,function = "spi1"; + 286 allwinner,muxsel = <4>; + 287 allwinner,drive = <1>; + 288 allwinner,pull = <1>; // only CS should be pulled up + 289 }; + 290 + 291 spi1_pins_c: spi1@2 { + 292 allwinner,pins = "PD10", "PD11", "PD12", "PD13","PD14", "PD15"; + 293 allwinner,function = "gpio_in"; + 294 allwinner,muxsel = <0>; + 295 allwinner,drive = <1>; + 296 allwinner,pull = <0>; + 297 }; 307 };

3.我看了一下drivers/sunxi_flash/sunxi_flash.c，貌似不是基于DM模型的驱动，这个是怎么调用的呀？大佬是否可以指导指导，还在学习阶段好多东西都不懂

@whycan 刚开始贴的log打印，应该是程序的一些空指针的操作导致系统挂了