[参考译文] AM625：SPI0错误检测。

尊敬的 Ishan：

您是否在设备树中定义任何 MTD 分区？ 是什么样子的？

此外、您的内核命令行是什么样的(`cat /proc/cmdline`)？ 通常分区通过`mtdparts`以这种方式传递。 此机制会覆盖设备树中的内容(也可以通过 CONFIG_MTD_CMDLINE_PARTS 进行控制)。

最后、(可能与您此处提出的问题无关)、但 SPI0_CLK 应定义为 PIN_INPUT、TRM 中有一条与此相关的注意事项。

此致、Andreas

您好、Andreas、

感谢您的重播、

1) 1)未定义设备树中的任何 MTD 分区、设备树节点如下所示

&main_pmx0 {
	main_spi0_pins_default: main-spi0-pins-default {
					pinctrl-single,pins = <
							AM62X_IOPAD(0x1bc, PIN_INPUT, 0) /* (A14) SPI0_CLK */
							AM62X_IOPAD(0x1c0, PIN_INPUT, 0) /* (B13) SPI0_D0 */
							AM62X_IOPAD(0x1c4, PIN_INPUT, 0) /* (B14) SPI0_D1 */
							AM62X_IOPAD(0x1b4, PIN_OUTPUT, 0) /* (A13) gpio1.15 SPI0_CS0 */
							AM62X_IOPAD(0x1b8, PIN_OUTPUT, 0) /* (C13) gpio1.16 SPI0_CS1 */
					>;
			};
			
	main_spi1_pins_default: main-spi1-pins-default {
                pinctrl-single,pins = <
                        AM62X_IOPAD(0x0020, PIN_INPUT, 1) /* (J25) OSPI0_D5.SPI1_CLK */
                        AM62X_IOPAD(0x001c, PIN_OUTPUT, 1) /* (J23) OSPI0_D4.SPI1_CS0 */
                        AM62X_IOPAD(0x0034, PIN_OUTPUT, 1) /* (H21) OSPI0_CSn2.SPI1_CS1 */
                        AM62X_IOPAD(0x0024, PIN_INPUT, 1) /* (H25) OSPI0_D6.SPI1_D0 */
                        AM62X_IOPAD(0x0028, PIN_INPUT, 1) /* (J22) OSPI0_D7.SPI1_D1 */
                >;
        };
};

&main_spi0 {
        status="okay";
        pinctrl-names = "default";
        pinctrl-0 = <&main_spi0_pins_default>;
        ti,spi-num-cs = <2>;
        ti,pindir-d0-out-d1-in;
		
		flash1@0 {
                                compatible = "winbond,w25q64dw", "jedec,spi-nor";
                                spi-max-frequency = <24000000>;
                                m25p,fast-read;
                                reg = <0x0>;
                        };
						
		flash2@1 {
                                compatible = "winbond,w25q64dw", "jedec,spi-nor";
                                spi-max-frequency = <24000000>;
                                m25p,fast-read;
                                reg = <0x1>;
                        };
};

&main_spi1 {
        status="okay";
        pinctrl-names = "default";
        pinctrl-0 = <&main_spi1_pins_default>;
        ti,spi-num-cs = <2>;
        ti,pindir-d0-out-d1-in;
        
        flash1@0 {
                compatible = "winbond,w25q64dw", "jedec,spi-nor";
                spi-max-frequency = <24000000>;
                m25p,fast-read;
                reg = <0>;
        };

        flash2@1 {
                compatible = "winbond,w25q64dw", "jedec,spi-nor";
                spi-max-frequency = <24000000>;
                m25p,fast-read;
                reg = <1>;
        };
};

/proc/cmdline "如下所示。

root@sm2s-am6254:~# cat /proc/cmdline             
console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 mtdparts=spi-nand0:512k(ospi.tiboot3),2m(ospi.tispl),4m(ospi.u-boot),256k(ospi.env),256k(ospi.env.backup),98048k@32m(ospi.rootfs),256k@130816k(ospi.phyp
attern);omap2-nand.0:2m(NAND.tiboot3),2m(NAND.tispl),2m(NAND.tiboot3.backup),4m(NAND.u-boot),256k(NAND.u-boot-env),256k(NAND.u-boot-env.backup),-(NAND.file-system) root=PARTUUID=cc8878cf-02 rw rootfstype=ext4 ro
otwait

还从 u-boot 进行检查

=> print mtdparts 
mtdparts=mtdparts=spi-nand0:512k(ospi.tiboot3),2m(ospi.tispl),4m(ospi.u-boot),256k(ospi.env),256k(ospi.env.backup),98048k@32m(ospi.rootfs),256k@130816k(ospi.phypattern);omap2-nand.0:2m(NAND.tiboot3),2m(NAND.tisp
l),2m(NAND.tiboot3.backup),4m(NAND.u-boot),256k(NAND.u-boot-env),256k(NAND.u-boot-env.backup),-(NAND.file-system)

3)内核配置" CONFIG_MTD_CMDLINE_PARTS "也已启用  


正如您提到的 、它可以覆盖设备树、我更改了 mtdparts 自 u-boot。 仍然会得到错误的 SPI 闪存检测。 下面提供了详细的日志。

U-Boot 2023.04 (Oct 29 2024 - 10:45:21 +0000)

SoC:   AM62X SR1.0 HS-FS
Model: Avnet sm2s-am6254 smarc module
DRAM:  2 GiB
Core:  82 devices, 31 uclasses, devicetree: separate
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from MMC... OK
In:    serial@2800000
Out:   serial@2800000
Err:   serial@2800000
Net:   eth0: ethernet@8000000port@1
Hit any key to stop autoboot:  0 
=> 
=> 
=> print mtdparts
## Error: "mtdparts" not defined
=> 


root@sm2s-am6254:~# 
root@sm2s-am6254:~# 
root@sm2s-am6254:~# cat /proc/cmdline 
console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 root=PARTUUID=cc8878cf-02 rw rootfstype=ext4 rootwait
root@sm2s-am6254:~# 

root@sm2s-am6254:~# cat /proc/mtd    
dev:    size   erasesize  name
mtd0: 10000000 00020000 "spi0.0"        <<            QSPI
mtd1: 00800000 00001000 "spi1.1"        <<          false detection
mtd2: 00800000 00001000 "spi1.0"        <<
mtd3: 00800000 00001000 "spi2.1"        <<          false detection
mtd4: 00800000 00001000 "spi2.0"
root@sm2s-am6254:~# 

请指导我们进行相同的操作、出于调试目的、我还保存了逻辑分析仪的数字信号、但无法在此处附上(上传)。  

只需连接初始信号序列的屏幕截图  

两个观察结果均针对 SPI0得出。


谢谢。此致
Ishan