前段时间ST推出了Value Line的STM32F750和H750两个系列，看了一下选型表，F750有LQFP144封装，正好适合我的STM32 linux板子。

于是，双十一买了几片。同时，我对我的linux板做了小幅改版：将SPI Flash容量扩大到32MB并连接到F750的QSPI
BANK1，添加了CAN收发器和接口，增加了两个I2C外设（温湿度传感器和气压传感器）。板子做回来后先焊了一片，调试过程还算比较顺利，现在u-boot和Linux都工作起来了，下面是系统启动log，F750速度还是相当快的（427.62
  e8 a. ~4 L6 ~( bBogoMIPS，F429跑Linux只有35.84
! B: w1 U: t# C  C/ |0 YBogoMIPS），QSPI的加载速度也很给力。下一步我准备多测试几种STM32外设的Linux
driver，emcraft现在的SDK比两三年前多了不少外设驱动，可以都试试看。

; v+ `  R$ }: j4 @2 W1 f4 |  s( S5 r
8 N+ n! ~4 J. x" ^8 O8 O9 o9 l$ p
% p0 `' {0 \4 Y+ n" v

U-Boot 2010.03 (Nov 26 2018 - 21:30:21)

CPU  : STM32F7 (Cortex-M7)
Freqs: SYSCLK=216MHz,HCLK=216MHz,PCLK1=54MHz,PCLK2=108MHz
5 {: V0 B6 r& K+ w# ^; uBoard: STM32F750 Rev 1.0
. W+ {7 C: v* N7 c7 ^5 }) uDRAM:  64 MB
, R( U% B  t" g! l: {7 n+ [, ZIn:    serial
Out:   serial
6 H$ ~$ g  p* F) ^9 o2 ~7 [Err:   serial
QSPI:  32 MB mapped at 0x90000000
Net:   miiphy_register done.
eth hw init done.
- J- k$ x6 }. g1 ^# qSTM32_MAC
; I: y2 g$ H1 E) d' aHit any key to stop autoboot:  0
Booting from QSPI
## Booting kernel from Legacy Image at c0007fc0 ...
) A, y, z  {9 p- P   Image Name:   Linux-4.2.0
   Image Type:   ARM Linux Multi-File Image (uncompressed)
3 g6 \/ V2 S+ j# y$ q   Data Size:    7496295 Bytes =  7.1 MB
   Load Address: c0008000
$ F! ?6 k+ d) b! d9 l* X   Entry Point:  c0008001
, \6 K8 N8 V1 q. I8 N7 [2 g   Contents:
2 ]% X8 ]3 C. [/ O# A! z      Image 0: 7471388 Bytes =  7.1 MB
: N; |7 W5 {  }3 s2 n( l7 n      Image 1: 24895 Bytes = 24.3 kB
   Verifying Checksum ... OK
' F8 x2 s9 g( ^9 ?6 u  m, ^. D2 D## Flattened Device Tree from multi component Image at C0007FC0
   Booting using the fdt at 0xc0728128
2 r/ N: ]1 J3 i! B1 [3 `/ ~- d. K   Loading Multi-File Image ... OK
OK
3 `1 B% \& I6 Y" W3 }WARNING: legacy format multi component image overwritten
. G6 c) _" R7 j  K! e   Loading Device Tree to c3ff6000, end c3fff13e ... OK
& P5 \! p+ }# B7 {7 v5 a. J
Starting kernel ...Booting Linux on physical CPU 0x0
  I7 x) }$ M2 b0 wLinux version 4.2.0(gcc version 4.4.1 (Sourcery G++ Lite 2010
q1-189) ) #90 Tue Dec 4 03:32:33 EST 2018
3 W" _( F1 W% VCPU: ARMv7-M [410fc271] revision 1 (ARMv7M), cr=00000000
CPU: WBA data cache, WBA instruction cache
Machine model: EmCraft Systems STM32F7-SOM board
  t' c! D$ ^5 S; m: w# q. G1 o+ W# VBuilt 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
% D5 G3 o+ W& ]  f! s* G& `Kernel command line: stm32_platform=stm32f7-disco console=ttyS0,115200 panic=10 ip=169.25
7 B7 x/ j& _3 g4.1.10:169.254.1.2:::stm32f7-disco:eth0:ff
0 u% b! `: z0 j; `) U+ i( ZPID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
4 p8 ~8 h6 [7 E2 f% M+ V" k/ NInode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 56432K/65536K available (2523K kernel code, 181K rwdata, 588K rodata, 4000K init,
1 n9 ^2 U8 a( e1 o" E/ t% e0 w5 V6 i111K bss, 9104K reserved, 0K cma-reserved)
( \: d6 b, p5 n: PVirtual kernel memory layout:
    vector  : 0x00000000 - 0x00001000   (   4 kB)
    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0x00000000 - 0xffffffff   (4095 MB)
    lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)
      .text : 0xc0008000 - 0xc0312000   (3112 kB)
$ a" \' w5 Y* O3 V6 W) y# e# X$ q      .init : 0xc0312000 - 0xc06fa000   (4000 kB)
      .data : 0xc06fa000 - 0xc07277c0   ( 182 kB)
       .bss : 0xc072811c - 0xc0743e84   ( 112 kB)

NR_IRQS:16 nr_irqs:16 16
9 D* s( d$ U1 V* G; a) S/interrupt-controller@40013c00: 24 External IRQs detected
7 T0 r6 z* r# w& }clocksource: arm_system_timer: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 27651335
' S) f$ e6 F! M$ `. e6 o8 ns
ARM System timer initialized as clocksource
* \# M1 t6 A2 q  f& b/soc/timer@40000000: STM32 clockevent driver initialized (32 bits)
sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 21474836475000000ns
Calibrating delay loop... 427.62 BogoMIPS (lpj=2138112)
4 k0 \, f, ?) v8 apid_max: default: 4096 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
, I8 Y* J0 l% h9 tMountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
) }. M$ U. b( ^5 |( tdevtmpfs: initialized
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275
0000 ns
# \+ ?/ i  z, |pinctrl core: initialized pinctrl subsystem
' L* p: t, z6 h+ H7 a$ G8 lNET: Registered protocol family 16
3 I, O# y( x. w% A+ M. e: {stm32-pinctrl pin-controller: nbanks = 11
stm32-pinctrl pin-controller: nfunctions = 20
# h1 Y4 q( Z% j9 c) n( O) W6 x' Lstm32-pinctrl pin-controller: ngroups = 23
! d0 k/ ^8 V5 S! [stm32-pinctrl pin-controller: GPIOA bank added.
2 L& ?: H& t9 o+ f  v/ Q0 Q" Ostm32-pinctrl pin-controller: GPIOB bank added.
- Y  H7 o1 s2 b2 pstm32-pinctrl pin-controller: GPIOC bank added.
+ J( q0 \& R7 K9 g* O" |stm32-pinctrl pin-controller: GPIOD bank added.
stm32-pinctrl pin-controller: GPIOE bank added.
6 H7 M! N4 J/ z0 pstm32-pinctrl pin-controller: GPIOF bank added.
, j( k2 r4 L: j) a# V* Dstm32-pinctrl pin-controller: GPIOG bank added.
0 M! \/ [4 |; n, F8 u/ X; Mstm32-pinctrl pin-controller: GPIOH bank added.
( S  n* u8 K+ s6 S) e0 h7 Zstm32-pinctrl pin-controller: GPIOI bank added.
stm32-pinctrl pin-controller: GPIOJ bank added.
stm32-pinctrl pin-controller: GPIOK bank added.
stm32-pinctrl pin-controller: Function[0         name:i2c_1,    groups:1]
9 M5 Q7 P7 i% l  Y0 o2 P2 \, d. Tstm32-pinctrl pin-controller: Function[1         name:i2c_2,    groups:1]
stm32-pinctrl pin-controller: Function[2         name:i2c_3,    groups:1]
# i. N8 r$ c/ r$ O8 Ystm32-pinctrl pin-controller: Function[3         name:mac,      groups:2]
, [0 A/ W  j+ @' k% Istm32-pinctrl pin-controller: Function[4         name:sdio,     groups:1]
stm32-pinctrl pin-controller: Function[5         name:spi_2,    groups:1]
( w% p6 @2 ?: b5 X& Estm32-pinctrl pin-controller: Function[6         name:spi_4,    groups:1]
' l- \( k, {  ]: H  z9 z- Y+ Istm32-pinctrl pin-controller: Function[7         name:spi_5,    groups:1]
stm32-pinctrl pin-controller: Function[8         name:usart1,   groups:1]
% }5 N. Y4 Q) _& n, I# Q0 h) sstm32-pinctrl pin-controller: Function[9         name:usart6,   groups:1]
# Q8 Q, }/ S2 C7 u1 c7 zstm32-pinctrl pin-controller: Function[10        name:usart7,   groups:1]
+ o) k& b: U+ ]! H# `8 U2 qstm32-pinctrl pin-controller: Function[11        name:usb_fs,   groups:1]
" ?4 E/ }  c/ _# D- p; G3 Vstm32-pinctrl pin-controller: Function[12        name:usb_hs,   groups:1]
stm32-pinctrl pin-controller: Function[13        name:can_1,    groups:1]
* ^0 ?' `% h8 I7 q( T$ pstm32-pinctrl pin-controller: Function[14        name:adc1_in0_pin,     groups:1]
0 A, D; q7 `/ o. l" v. z8 dstm32-pinctrl pin-controller: Function[15        name:dac_out2_pin,     groups:1]
stm32-pinctrl pin-controller: Function[16        name:ltdc,     groups:1]
' Q' T# l% k* ?5 x6 o# Q% m% e0 Astm32-pinctrl pin-controller: Function[17        name:sai_2,    groups:1]
stm32-pinctrl pin-controller: Function[18        name:i2c_4,    groups:1]
stm32-pinctrl pin-controller: Function[19        name:gpio,     groups:3]
stm32-dma 40026000.dma: STM32 DMA driver registered
stm32-dma 40026400.dma: STM32 DMA driver registered
SCSI subsystem initialized
; _- I3 L# {- ?/ Lusbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
soc:phy_hs supply vcc not found, using dummy regulator
soc:phy_fs supply vcc not found, using dummy regulator
. w8 v, \, c3 D, @pps_core: LinuxPPS API ver. 1 registered
4 \1 b; ^( |1 h. Jpps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
# K7 J6 v9 B5 @PTP clock support registered
& J# e( u  y$ q' ?# yAdvanced Linux Sound Architecture Driver Initialized.
0 n1 I8 \1 Y7 u7 A& d& VBluetooth: Core ver 2.20
8 `3 J* W! U, H  C, KNET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
' l1 o+ E; [8 Q4 n6 g* O4 M2 T/ T+ W; X' |Bluetooth: HCI socket layer initialized
Bluetooth: L2CAP socket layer initialized
Bluetooth: SCO socket layer initialized
- ~0 y4 H+ D  f) r% G- t& k8 Z& yclocksource: Switched to clocksource arm_system_timer
NET: Registered protocol family 2
' w* X0 B7 J! V$ T0 O( Q9 S( Q: _TCP established hash table entries: 1024 (order: 0, 4096 bytes)
4 H) ~, b8 G8 u% oTCP bind hash table entries: 1024 (order: 0, 4096 bytes)
5 Q$ W' [. L) G% TTCP: Hash tables configured (established 1024 bind 1024)
6 \% D; m/ x  x0 ~" EUDP hash table entries: 256 (order: 0, 4096 bytes)
. ~* o9 k4 b9 f! E6 p& l( L" XUDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
& `5 ?9 M5 r9 G4 h! w. s6 zRPC: Registered tcp NFSv4.1 backchannel transport module.
; ~7 s* k7 ~' g4 a) |% Z5 F& qPower Management for STM32
+ m3 z# }2 X* P/ Bfutex hash table entries: 16 (order: -5, 192 bytes)
jffs2: version 2.2. (NAND) (SUMMARY)  漏 2001-2006 Red Hat, Inc.
5 p8 a0 |) p" nfuse init (API version 7.23)
9 D0 @# {; c8 u7 dBlock layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
io scheduler noop registered
! B+ K. i3 O+ F1 V2 v3 ~io scheduler cfq registered (default)
stm32-pinctrl pin-controller: maps: function gpio group pwms num 2
stm32-pwm pwm0: basing on TIM3.1(x16)
stm32-pinctrl pin-controller: maps: function ltdc group ltdc-0 num 29
stm32_lcdfb 40016800.ltdc: fb0: fb device registered successfully
STM32 USART driver initialized
stm32-pinctrl pin-controller: maps: function usart1 group usart1-0 num 3
40011000.serial: ttyS0 at MMIO 0x40011000 (irq = 34, base_baud = 6750000) is a stm32-usar
t
8 A. ]2 J8 \$ I( d% S! u5 L1 z( Y, f$ Bconsole [ttyS0] enabled
  m* W4 v+ F8 k1 ?8 Sstm32-pinctrl pin-controller: maps: function usart6 group usart6-0 num 3
1 f/ o4 x6 _, M4 E! ^% b- G40011400.serial: ttyS5 at MMIO 0x40011400 (irq = 35, base_baud = 6750000) is a stm32-usar
t
7 b+ o2 S. t" Q! m/ v+ O) Lnbd: registered device at major 43
4 {" [# e- m/ E! nstm32-pinctrl pin-controller: maps: function dac_out2_pin group dac-0 num 2
; m& [7 a: H5 _/ d/ }, Lstm32_dac 40007400.dac: dac1: no timer assigned, DMA functionality is not available
/ v+ F0 f# Z6 t  p/ nstm32_dac 40007400.dac: created 1 character devices with MAJOR 248
) P' `! m3 C8 |+ O: M( j2 ofpart partitions found on MTD device physmap-stm-flash.0
Creating 2 MTD partitions on "physmap-stm-flash.0":
2 c3 Q0 t7 |6 ^2 B! m( N: e0x000000000000-0x000000020000 : "stm_flash_uboot"
0x000000040000-0x000000100000 : "stm_flash_unused"
( `/ C. G, ^. }0 v# ^* r8 s3 Cstm32-pinctrl pin-controller: maps: function spi_5 group spi_5-0 num 4
+ n3 P3 w! B( ^, ?" nstm32-spi 40015000.spi: SPI Controller 4 at 40015000,irq=38,hz=108000000
CAN device driver interface
stm32-pinctrl pin-controller: maps: function can_1 group can_1-0 num 3
stm32-can 40006400.can: device registered (reg=40006400, irq=31)
; b! v5 F. |& bstm32-pinctrl pin-controller: maps: function mac group mac_rmii num 10
% O2 d& W4 w' ^' dstmmac - user ID: 0x10, Synopsys ID: 0x35
8 C% G1 n! C9 w/ l* w9 c$ G' b+ p Ring mode enabled
DMA HW capability register supported
% R& ]4 b# E; [3 Y4 |  N7 M Enhanced/Alternate descriptors
        Enabled extended descriptors
RX Checksum Offload Engine supported (type 2)
TX Checksum insertion supported
% @5 f& e- Y4 \; m4 o3 ~ Wake-Up On Lan supported
Enable RX Mitigation via HW Watchdog Timer
2 O# E! \/ }; ], e3 w' Bstm32-dwmac 40028000.ethernet eth0: No MDIO subnode found
libphy: stmmac: probed
eth0: PHY ID 0007c0f1 at 0 IRQ POLL (stmmac-0:00) active
PPP generic driver version 2.4.2
PPP BSD Compression module registered
: A' ^3 f8 K, [& X; Y2 PPPP Deflate Compression module registered
5 O6 A9 m# j+ j% Busbcore: registered new interface driver rt2800usb
stm32-pinctrl pin-controller: maps: function usb_hs group usb_hs-0 num 3
/ }' W6 |2 d* b- q) ldwc2 40040000.usb: DWC OTG Controller
dwc2 40040000.usb: new USB bus registered, assigned bus number 1
dwc2 40040000.usb: irq 56, io mem 0x00000000
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: DWC OTG Controller
usb usb1: Manufacturer: Linux 4.2.0 dwc2_hsotg
usb usb1: SerialNumber: 40040000.usb
hub 1-0:1.0: USB hub found
4 f' u/ R! i2 S4 h0 S3 bhub 1-0:1.0: 1 port detected
' c; `) C7 ^2 H: W1 Zstm32-pinctrl pin-controller: maps: function usb_fs group usb_fs-0 num 3
50000000.usb supply vusb_d not found, using dummy regulator
50000000.usb supply vusb_a not found, using dummy regulator
! \# o  w1 }5 s- {5 _dwc2 50000000.usb: EPs: 6, dedicated fifos, 512 entries in SPRAM
( u" C; Z" i/ Y# sdwc2 50000000.usb: DCFG=0x08200000, DCTL=0x00000002, DIEPMSK=0000000b
1 N- W, Z$ o9 ?% T3 Q. M- Jdwc2 50000000.usb: GAHBCFG=0x00000000, GHWCFG1=0x00000000
dwc2 50000000.usb: GRXFSIZ=0x000000a0, GNPTXFSIZ=0x004000a0
dwc2 50000000.usb: DPTx[1] FSize=32, StAddr=0x000000e0
/ J" v5 a( c2 `: O. m/ r0 |dwc2 50000000.usb: DPTx[2] FSize=64, StAddr=0x00000100
% s6 M% y( F4 H+ Ndwc2 50000000.usb: DPTx[3] FSize=512, StAddr=0x00000800
# v( i# \% S. E% S1 M0 pdwc2 50000000.usb: DPTx[4] FSize=512, StAddr=0x00000a00
dwc2 50000000.usb: DPTx[5] FSize=512, StAddr=0x00000c00
: ^" H! B' J, Ydwc2 50000000.usb: ep0-in: EPCTL=0x00008000, SIZ=0x00000000, DMA=0x5abee5fb
8 o" j5 u" O- U, t+ S- Cdwc2 50000000.usb: ep0-out: EPCTL=0x00008000, SIZ=0x00000000, DMA=0x5abee5fb
* A6 ~9 {6 q8 Vdwc2 50000000.usb: ep1-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
6 q" }$ F1 y0 h# Adwc2 50000000.usb: ep1-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
( h4 g# X9 L) d! [6 n3 b+ Qdwc2 50000000.usb: ep2-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep2-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
8 E5 A  ]- U) _5 o0 {, i: z+ ?4 ddwc2 50000000.usb: ep3-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep3-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
* k% ~0 a" v. Y0 p! H  O) N. Adwc2 50000000.usb: ep4-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep4-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep5-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep5-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
# v5 t0 l6 k0 f7 q. R  ]# k$ V3 Wdwc2 50000000.usb: DVBUSDIS=0x000017d7, DVBUSPULSE=000005b8
usbcore: registered new interface driver cdc_acm
cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
5 H! z# y- F- n( E4 q+ @usbcore: registered new interface driver uas
usbcore: registered new interface driver usb-storage
* f( X* m1 `- C* }) U- J6 \g_serial gadget: Gadget Serial v2.4
6 y$ |& \! X5 i* Q, v7 \g_serial gadget: g_serial ready
dwc2 50000000.usb: bound driver g_serial
i2c /dev entries driver
) `, d) Q% Z1 v9 X+ c+ L3 k$ \stm32-pinctrl pin-controller: maps: function i2c_4 group i2c_4-0 num 3
4 o* w. U9 E$ c1 L% T; @bmp085 3-0077: Successfully initialized bmp085!
+ {5 q* q( N0 V; K8 U4 \4 Lstm32f7-i2c 40006000.i2c: I2C Controller i2c-3 at 40006000,irq=58
Driver for 1-wire Dallas network protocol.
) T2 `# b( b7 \  X2 \; ?usbcore: registered new interface driver btusb
! M: o& D+ [; q! I; Istm32-pinctrl pin-controller: maps: function sdio group sdio-0 num 7
) K1 H9 s* v- p% Z( ~mmci-pl18x 40012c00.sdi: Got CD GPIO
- s, `# w' ~8 ammci-pl18x 40012c00.sdi: mmc0: PL180 manf 80 rev4 at 0x40012c00 irq 37,0 (pio)
stm32-dma 40026400.dma: stm32_dma_of_xlate: unable to get channel 3 - was already request
; _. s4 I) J  Q' O0 K" {ed
mmci-pl18x 40012c00.sdi: DMA channels RX dma1chan3, TX dma1chan3
' M5 S9 m- T3 Sstm32_gpio_to_irq: Event line 3 now points to fire interrupts from bank G
stm32-pinctrl pin-controller: maps: function gpio group outs num 2
# Y2 q+ o5 c5 x8 s. l0 i+ D& uhidraw: raw HID events driver (C) Jiri Kosina
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
' l2 e! e  U8 O* M* n& Wstm32-pinctrl pin-controller: maps: function adc1_in0_pin group adc1-0 num 2
stm32f4-adc 40012000.adc: registered
( p! n  ?# c9 l6 bstm32-pinctrl pin-controller: maps: function sai_2 group sai_2-0 num 5
stm32-dma 40026400.dma: stm32_dma_of_xlate: unable to get channel 4 - was already request
& X: }) s- |. g$ U5 med
2 ~% Z( g+ `( ?  W2 g  j, y; n- |$ Q9 ^stm32-asoc-card sound: failed to find codec platform device
0 ^; L; f5 u: [3 a6 k9 w  Nstm32-asoc-card: probe of sound failed with error -22
NET: Registered protocol family 17
1 G) A" v* T% f( m) z4 Q; l$ Ycan: controller area network core (rev 20120528 abi 9)
5 m8 l9 I! `  F. O' h' [NET: Registered protocol family 29
/ ^' ~7 {) z  O( Z* x0 Dcan: raw protocol (rev 20120528)
+ B/ T- i/ ~" O9 y% `5 g- c) Dcan: broadcast manager protocol (rev 20120528 t)
5 S1 X* W) `; ^, J1 zcan: netlink gateway (rev 20130117) max_hops=1
& s3 ]. T( @6 p) I( d, ?  h! zBluetooth: RFCOMM TTY layer initialized
: o: k2 h) B. [% i" C0 B1 k  I& mBluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM ver 1.11
/ a% U  N( d( A1 o1 xhctosys: unable to open rtc device (rtc0)
vmmc: disabling
( e: e3 C. Q/ I# d4 Z& D( |ALSA device list:
  No soundcards found.
- t5 ]% N7 j& x" B3 S& rFreeing unused kernel memory: 4000K (c0312000 - c06fa000)
* l# d9 J2 S# w7 B* Qinit started: BusyBox v1.24.2 (2018-11-22 20:35:58 EST)
/ # amixer: Mixer attach default error: No such file or directory
7 w! R2 I4 ~* z: B) dstm32-dwmac 40028000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx

/ # free
1 b9 f& }5 B9 p) V  }3 e5 V             total       used       free     shared    buffers     cached
Mem:         60432       8140      52292          0          0       4792
-/+ buffers/cache:       3348      57084
/ #

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