TI中文支持网在设备树里面增加以下内容，然而MMC2还是未能挂载设备，还需要修改内核什么地方吗
mmc3_pins_default: pinmux_mmc3_pins {
pinctrl-single,pins = <
0x03c (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ad15.mmc2_dat3 */
0x038 (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ad14.mmc2_dat2 */
0x048 (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ad13.mmc2_dat1 */
0x044 (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ad12.mmc2_dat0 */
0x08c (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_clk.mmc2_clk */
0x088 (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_csn3.mmc2_cmd */
0x040 (PIN_INPUT_PULLUP | MUX_MODE7) /* gpio1_16.mmc2_sd */
>;
};
mmc3_pins_sleep: pinmux_mmc3_pins_sleep {
pinctrl-single,pins = <
0x03c (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x038 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x048 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x044 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x08c (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x088 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x040 (PIN_INPUT_PULLDOWN | MUX_MODE7)
>;
};
&mmc3 {
status = "okay";
vmmc-supply = <&vmmc_reg>;
bus-width = <4>;
pinctrl-names = "default", "sleep";
pinctrl-0 = <&mmc3_pins_default>;
pinctrl-1 = <&mmc3_pins_sleep>;
cd-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
};
Eggsy Pang：
cd-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;这句话跟硬件上的引脚对应吗？把它置低试试看，cd-gpios = <&gpio1 16 GPIO_ACTIVE_LOW>
user4729174：
回复 Eggsy Pang:
貌似有接口初始化了，挂载不上去的样子，还是识别不了SD卡
log信息如下
[ 1.392696] omap_hsmmc 48060000.mmc: Got CD GPIO[ 1.448570] omap_hsmmc 47810000.mmc: Got CD GPIO[ 1.453472] omap_hsmmc 47810000.mmc: unable to obtain RX DMA engine channel 0[ 1.489599] ledtrig-cpu: registered to indicate activity on CPUs[ 1.495918] usbcore: registered new interface driver usbhid[ 1.501627] usbhid: USB HID core driver[ 1.505957] remoteproc0: wkup_m3 is available[ 1.510504] remoteproc0: Note: remoteproc is still under development and considered experimental.[ 1.519537] remoteproc0: THE BINARY FORMAT IS NOT YET FINALIZED, and backward compatibility isn't yet guaranteed.[ 1.530118] remoteproc0: Direct firmware load for am335x-pm-firmware.elf failed with error -2[ 1.540257] usbcore: registered new interface driver snd-usb-audio[ 1.546556] usbcore: registered new interface driver snd-ua101[ 1.552515] remoteproc0: Falling back to user helper[ 1.557820] usbcore: registered new interface driver snd-usb-caiaq[ 1.564189] usbcore: registered new interface driver snd-usb-6fire[ 1.570534] usbcore: registered new interface driver snd-usb-hiface[ 1.576890] usbcore: registered new interface driver snd-bcd2000[ 1.583007] usbcore: registered new interface driver snd_usb_pod[ 1.589123] usbcore: registered new interface driver snd_usb_podhd[ 1.595389] usbcore: registered new interface driver snd_usb_toneport[ 1.601934] usbcore: registered new interface driver snd_usb_variax[ 1.610109] oprofile: using arm/armv7[ 1.613881] nf_conntrack version 0.5.0 (7932 buckets, 31728 max)[ 1.621095] ip_tables: (C) 2000-2006 Netfilter Core Team[ 1.626626] Initializing XFRM netlink socket[ 1.631026] NET: Registered protocol family 17[ 1.635520] NET: Registered protocol family 15[ 1.640064] lib80211: common routines for IEEE802.11 drivers[ 1.645842] Key type dns_resolver registered[ 1.650583] omap_voltage_late_init: Voltage driver support not added[ 1.657369] cpu cpu0: of_pm_voltdm_notifier_register: Failed to get cpu0 regulator/voltdm: -517[ 1.666260] cpu cpu0: cpu0 clock notifier not ready, retry[ 1.672225] ThumbEE CPU extension supported.[ 1.676544] Registering SWP/SWPB emulation handler[ 1.698392] tps65910 0-002d: No interrupt support, no core IRQ[ 1.726947] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz[ 1.733791] omap_i2c 4802a000.i2c: bus 1 rev0.11 at 100 kHz[ 1.745951] musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver[ 1.752106] musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus number 1[ 1.760212] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002[ 1.767034] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1[ 1.774318] usb usb1: Product: MUSB HDRC host driver[ 1.779321] usb usb1: Manufacturer: Linux 4.1.18 musb-hcd[ 1.784743] usb usb1: SerialNumber: musb-hdrc.0.auto[ 1.790439] hub 1-0:1.0: USB hub found[ 1.794246] hub 1-0:1.0: 1 port detected[ 1.834146] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver[ 1.840257] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 2[ 1.848336] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002[ 1.855174] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1[ 1.862450] usb usb2: Product: MUSB HDRC host driver[ 1.867437] usb usb2: Manufacturer: Linux 4.1.18 musb-hcd[ 1.872881] usb usb2: SerialNumber: musb-hdrc.1.auto[ 1.878570] hub 2-0:1.0: USB hub found[ 1.882374] hub 2-0:1.0: 1 port detected[ 1.909050] omap_hsmmc 48060000.mmc: Got CD GPIO[ 1.914142] vmmc: supplied by vbat[ 1.988495] vdd_mpu: supplied by vbat[ 1.992356] cpu cpu0: of_pm_voltdm_notifier_register: Fail calculating voltage latency[950000<->1260000]:-22[ 2.002613] cpu cpu0: of_pm_voltdm_notifier_register: Fail calculating voltage latency[950000<->1260000]:-22[ 2.015065] input: gpio_buttons@0 as /devices/platform/gpio_buttons@0/input/input0[ 2.025291] hctosys: unable to open rtc device (rtc0)[ 2.037736] lis3_reg: disabling[ 2.041081] ALSA device list:[ 2.044064] No soundcards found.[ 2.048526] Waiting for root device PARTUUID=b47ab8d2-02…[ 2.067074] mmc1: MAN_BKOPS_EN bit is not set[ 2.073310] mmc1: new high speed MMC card at address 0001[ 2.079338] mmcblk0: mmc1:0001 MMC02G 1.79 GiB [ 2.084042] mmcblk0boot0: mmc1:0001 MMC02G partition 1 1.00 MiB[ 2.090201] mmcblk0boot1: mmc1:0001 MMC02G partition 2 1.00 MiB[ 2.098294] mmcblk0: p1 p2[ 2.214190] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)[ 2.222540] VFS: Mounted root (ext4 filesystem) on device 179:2.[ 2.235681] devtmpfs: mounted[ 2.239095] Freeing unused kernel memory: 280K (c0a46000 – c0a8c000)[ 2.288227] usb 2-1: new high-speed USB device number 2 using musb-hdrc[ 2.428588] usb 2-1: New USB device found, idVendor=1a40, idProduct=0101[ 2.436825] usb 2-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0[ 2.444144] usb 2-1: Product: USB 2.0 Hub [MTT][ 2.449828] hub 2-1:1.0: USB hub found[ 2.453693] hub 2-1:1.0: 4 ports detectedINIT: version 2.88 bootingError opening /dev/fb0: No such file or directoryStarting udev[ 3.289065] udevd[89]: starting version 182depmod: ERROR: could not open directory /lib/modules/4.1.18: No such file or directorydepmod: WARNING: -e needs -E or -Fdepmod: ERROR: could not open directory /lib/modules/4.1.18: No such file or directorydepmod: FATAL: could not search modules: No such file or directory[ 4.327649] EXT4-fs (mmcblk0p2): re-mounted. Opts: data=orderedbootlogd: cannot allocate pseudo tty: No such file or directory[ 4.978435] remoteproc0: powering up wkup_m3[ 4.983876] remoteproc0: Booting fw image am335x-pm-firmware.elf, size 219803[ 5.136039] remoteproc0: remote processor wkup_m3 is now up[ 5.136065] wkup_m3_ipc 44e11324.wkup_m3_ipc: CM3 Firmware Version = 0x191[ 5.247256] random: dd urandom read with 32 bits of entropy availableudevadm settle – timeout of 3 seconds reached, the event queue contains: /sys/devices/platform/ocp/481d8000.mmc/mmc_host/mmc1/mmc1:0001/block/mmcblk0/mmcblk0boot0 (1158) /sys/devices/platform/ocp/481d8000.mmc/mmc_host/mmc1/mmc1:0001/block/mmcblk0/mmcblk0boot1 (1159) /sys/devices/platform/ocp/481d8000.mmc/mmc_host/mmc1/mmc1:0001/block/mmcblk0/mmcblk0p1 (1160) /sys/devices/platform/ocp/481d8000.mmc/mmc_host/mmc1/mmc1:0001/block/mmcblk0/mmcblk0p2 (1161)[ 7.252033] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
Steven Liu1：
回复 user4729174:
这张卡，在其他的设备上挂载是正常的吗？有没有尝试过，排除一下卡本身的问题。
看到你的结构体定义，和EZSDK8.0对MMC1上的SD卡接口差异只在下面的标红地方。你现在用的是哪个版本的SDK?实际配置和参考的DTS文件配置是一样的吗？
327 &mmc1 {328 status = "okay";329 bus-width = <0x4>;330 pinctrl-names = "default", "sleep";331 pinctrl-0 = <&mmc1_pins_default>;332 pinctrl-1 = <&mmc1_pins_sleep>;333 cd-gpios = <&gpio0 6 GPIO_ACTIVE_HIGH>;334 cd-inverted;335 };
user4729174：
回复 Steven Liu1:
SDK 2.0 linux-4.1.18
SD卡是没有问题的,接口是根据实际配置来设置的，依mmc1的葫芦花了个瓢
user4729174：
回复 Steven Liu1:
加上cd-inverted;还是没有用
user4729174：
回复 Steven Liu1:
好像是芯片内部MMC电源使能的问题
设备数改为
&vbat { regulator-name = "vbat"; regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>;};&v3v3c_reg { regulator-name = "v3v3c_reg"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; vin-supply = <&vbat>;};&mmc3 { /* Wifi & Bluetooth on MMC #3 */ status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&mmc3_pins_default>; vmmmc-supply = <&v3v3c_reg>; bus-width = <4>; ti,non-removable; dmas = <&edma_xbar 12 0 1 &edma_xbar 13 0 2>; dma-names = "tx", "rx";};
启动打印信息为
[ 1.340893] i2c /dev entries driver[ 1.403362] /ocp/mmc@47810000: voltage-ranges unspecified[ 1.432001] omap_hsmmc: probe of 47810000.mmc failed with error -22[ 1.446527] ledtrig-cpu: registered to indicate activity on CPUs[ 1.454241] remoteproc0: wkup_m3 is available[ 1.458744] remoteproc0: Note: remoteproc is still under development and considered experimental.[ 1.467934] remoteproc0: THE BINARY FORMAT IS NOT YET FINALIZED, and backward compatibility isn't yet guaranteed.[ 1.478747] remoteproc0: Direct firmware load for am335x-pm-firmware.elf failed with error -2[ 1.490094] oprofile: using arm/armv7[ 1.494018] remoteproc0: Falling back to user helper[ 1.500340] Initializing XFRM netlink socket[ 1.504920] NET: Registered protocol family 17[ 1.509503] NET: Registered protocol family 15[ 1.514189] lib80211: common routines for IEEE802.11 drivers[ 1.520180] Key type dns_resolver registered[ 1.525000] omap_voltage_late_init: Voltage driver support not added[ 1.532176] cpu cpu0: of_pm_voltdm_notifier_register: Failed to get cpu0 regulator/voltdm: -517[ 1.540955] cpu cpu0: cpu0 clock notifier not ready, retry
