mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);//host端的设置.}/** Select the bus speed mode depending on host * and card capability.*/sd_update_bus_speed_mode(card);/*这个函数是找一个card和host都支持的速度,类似上面对数据线宽度的操作,spec上有定义: Bus Speed Mode (using 4 paralle...
struct mmc_card *oldcard 新插入的卡初始化时该值为NULL。 linux版本3.7 mmc_sd_init_card函数: 1/*2* Handle the detection and initialisation of a card.3*4* In the case of a resume, "oldcard" will contain the card5* we're trying to reinitialise.6*/7staticintmmc_sd_init_card(structmm...
ESP32 SD MMC sdmmc_card_init failed (0x107)Quote by NazaRik555 » Tue Oct 31, 2023 12:00 pm I have problems with initializing MMC Card. What can it be? Also on D0 I have a 1k Pull-up resistorAttachments Снимокэкрана 2023-10-31 145955.png (89.79 KiB) Viewed ...
(linux)SD卡初始化-mmc_sd_init_card函数(续) 2015-03-27 16:49 −转自:http://www.cnblogs.com/fengeryi/p/3472728.html mmc_sd_init_card剩下的关于UHS-I的分支结构。 uhs-I的初始化流程图如图: 红线标出的部分是已经做了的事,与上一篇那个流程图是... ...
MMC: no ca..bootsystem:android bootargs=console=ttymxc0,115200androidboot.console=ttymxc0 consoleblank=0vmalloc=
It looks like your trying to boot from the incorrect MMC source (unless the SD card your trying to boot from is not properly set up). You'll probably need to adjust your boot command. You can try commands like "booti mmc0", "booti mmc1", etc., to see if that helps. It might ...
mmc1: mmc_rescan_try_freq: trying to init card at 400000 Hz i have made the following modifications to have a second SD card reader : 1° call mmc1_init : {mmc1_init, DEV_ON_BASEBOARD, PROFILE_ALL}, /* added */ {mmc0_init, DEV_ON_BASEBOARD, PROFILE_ALL}, 2° update mmc1 ...
flash target isMMC:0MMCcard init failed! 第二次写入的SD卡为256Mb, 可以成功启动 代码语言:javascript 复制 U-Boot2018.03-imx_v2018.03_4.14.78_1.0.0_ga+g7ade5b4(May082019-08:18:47+0000)CPU:Freescale i.MX8MMQrev1.01800MHz(running at1200MHz)CPU:Commercial temperaturegrade(0C to 95C)at 50...
BOOT方式配置从NAND启动时,可以通过UART3烧写程序进NAND,并从nand启动。 DM3730的电源控制芯片为TPS65950. 现在的问题时,把SD卡按开发板的方式格式化,并把烧录程序放进去,在开发板上SD卡能够成功启动,但在我们自己设计的板子上无法启动。 从nand启动后进入uboot,敲命令mmc init后,提示No MMC card found。
> mmc_set_initial_state(host); > + mmc_set_clock(host, host->f_init); > mmc_host_clk_release(host); > > return mmc_init_card(host, card->ocr, card); > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in ...