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您好!
U-Boot 版本:U-Boot 2019.01-g333c3e72d3
TI-SDK:TI-PROCESSOR-SDK-LINUX-AM335x-EVM-06.03.00.106
在选择"I2C 总线2"时,BeagleBone Black 将进行复位。
U-boot 登录:“U-Boot 2019.01-g333c3e72d3”
------------------
U-Boot SPL 2019.01-g333c3e72d3 (2020年4月19日- 11:21:12 +0000)
尝试从 MMC1引导
U-Boot 2019.01-g333c3e72d3 (2020年4月19日- 11:21:12 +0000)
CPU :AM335X-GP 修订版2.1
型号:TI AM335x BeagleBone Black
DRAM: 512 MiB
NAND: 0 MIB
MMC: OMAP SD/MMC:0、OMAP SD/MMC:1.
正在从 FAT 加载环境... 好的
NET: eth0:以太网@4a100000
警告:USB_Ether MAC 地址不匹配:
ROM 中的地址为 :de:ad:be:ef:00:01
环境中的地址为 04:79:B7:A8:FD:e0
,eth1:USB_ether
按任意键停止自动引导: 0
=> I2C 探针
未选择 I2C 总线
=> I2C DEV 2
将总线设置为2
数据中止
PC:[<9ff887fa>] LR:[<9ff887cf>]
重新分配 PC:[<808207fa>] LR:[<808207cf>]
SP:9df3af08 IP:9df3aedc FP:000003e8
R10:9df4b0e8 R9:9df47eb8 R8:9df4b158
R7:00000002 R6:00000001 R5:9ffc29a7 R4:4819c000
r3:000000a4 r2:0000aec4 r1:000050b4 r0:9df48748
标志:nzCv 在 模式 SVC_32上关闭 FIQ 的 IRQ
代码:2e002702 461dbf18 7b7af44f 6004f8c8 (5ae37a6b)
正在重置 CPU ...
正在重置...
--------------------
这是预期的吗?
另一方面、 电路板上的出厂 u-boot 映像(U-Boot 2018.09-00002-g0b54a51ee)也不会出现这种情况:
U-Boot "2018.09-00002-g0b54a51eee"上的 U-boot 日志
----------
U-Boot 2018.09-00002-g0b54a51eee (2018年9月10日- 19:41:39 -0500)、编译:jenkins5
CPU :AM335X-GP 修订版2.1
I2C: 就绪
DRAM: 512 MiB
与驱动程序"omap_hmc"不匹配
与驱动程序"omap_hmc"不匹配
未找到某些驱动程序
复位源:发生上电复位。
RTC 32KCLK 源:外部。
MMC: OMAP SD/MMC:0、OMAP SD/MMC:1.
正在从 EXT4加载环境...
**无法使用 MMC 0:1加载 env **
电路板:BeagleBone Black
未设置。 验证第一个电子保险丝 MAC
BeagleBone Black:
BeagleBone:Cape EEPROM:I2C_probe:0x54:
BeagleBone:Cape EEPROM:I2C_probe:0x55:
BeagleBone:Cape EEPROM:I2C_probe:0x56:
BeagleBone:Cape EEPROM:I2C_probe:0x57:
NET: eth0:MII 模式
CPsw、USB_ether
按空格键可在2秒钟内中止自动引导
=> I2C DEV 2
将总线设置为2
=>
------------
此致、
Adarsh
您好、Adarsh、
在较新的 AM335x SDK 中、驱动程序模型(DM)用于 SPL/u-boot 中的 I2C 端口。
您可能需要检查 u-boot 板 DTB 文件以查看在 u-boot 器件树文件中启用了哪些 i2c 端口。
1.一个选项是通过"DTC -i dtb board_xyz.dtb > board_xyx.dtb"将板 DTB 文件转换回 DTC 文件、然后检查在板 DTB 文件中启用了哪些 i2c 端口。
2.另一个选项是运行"dm tree" cmd @u-boot Prompt 以列出驱动程序模型(Dm)树。 如果未设置为启用"dm ..."、则可能需要在 u-boot board_xyz_defconfig 中添加"CONFIG_CMD_DM=y" 命令
示例"dm 树"日志位于在 AM335x GP EVM 上捕获的附件 I 中。
请注意、两个 i2c 端口与 AM335 EVM 的 i2c0和 i2c1节点的 u-boot 器件树配置匹配、如下所示:
/arch/arm/dts/am335x-evm.dts &i2c0 { pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins>; status = "okay"; clock-frequency = <400000>; ... &i2c1 { pinctrl-names = "default"; pinctrl-0 = <&i2c1_pins>; status = "okay"; clock-frequency = <100000>; ...
最棒的
-香港
您好、Hong、
我同意你刚才提到的一两种选择。
在本例中、我使用的是中的预构建映像(u-boot-AM335x-evm.img、MLO-AM335x-EVM)
"ti-processor-sdk-linux-am335x-evm-06.03.00.106"。
默认情况下,在这些映像中启用 i2c0和 i2c2控制器(从"am33xx.dtsi"和"am335x-bone-common.dtsi"文件中观察到这一点 )。输出也确认了这一点
u-boot shell 提示符处的"DM 树"命令。
确认配置并启用了"i2c 总线2"后、在运行"i2c dev 2"时、电路板是否会崩溃并重新启动?
U-Boot SPL 2019.01-g333c3e72d3 (Apr 19 2020 - 11:21:12 +0000) Trying to boot from MMC1 U-Boot 2019.01-g333c3e72d3 (Apr 19 2020 - 11:21:12 +0000) CPU : AM335X-GP rev 2.1 Model: TI AM335x BeagleBone Black DRAM: 512 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from FAT... *** Warning - bad CRC, using default environment <ethaddr> not set. Validating first E-fuse MAC Net: eth0: ethernet@4a100000 Warning: usb_ether MAC addresses don't match: Address in ROM is de:ad:be:ef:00:01 Address in environment is 04:79:b7:a8:fd:e0 , eth1: usb_ether Hit any key to stop autoboot: 0 => dm tree Class index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver rsa_mod_ex 0 [ ] mod_exp_sw |-- mod_exp_sw simple_bus 0 [ + ] generic_simple_bus `-- ocp simple_bus 1 [ ] generic_simple_bus |-- l4_wkup@44c00000 simple_bus 2 [ ] generic_simple_bus | |-- prcm@200000 simple_bus 3 [ ] generic_simple_bus | `-- scm@210000 simple_bus 4 [ ] generic_simple_bus | `-- scm_conf@0 gpio 0 [ + ] gpio_omap |-- gpio@44e07000 gpio 1 [ ] gpio_omap |-- gpio@4804c000 gpio 2 [ ] gpio_omap |-- gpio@481ac000 gpio 3 [ ] gpio_omap |-- gpio@481ae000 serial 0 [ + ] omap_serial |-- serial@44e09000 i2c 0 [ ] i2c_omap |-- i2c@44e0b000 i2c 1 [ ] i2c_omap |-- i2c@4819c000 mmc 0 [ + ] omap_hsmmc |-- mmc@48060000 blk 0 [ + ] mmc_blk | `-- mmc@48060000.blk mmc 1 [ + ] omap_hsmmc |-- mmc@481d8000 blk 1 [ ] mmc_blk | `-- mmc@481d8000.blk timer 0 [ + ] omap_timer |-- timer@48040000 timer 1 [ ] omap_timer |-- timer@48042000 timer 2 [ ] omap_timer |-- timer@48044000 timer 3 [ ] omap_timer |-- timer@48046000 timer 4 [ ] omap_timer |-- timer@48048000 timer 5 [ ] omap_timer |-- timer@4804a000 misc 0 [ + ] ti-musb-wrapper |-- usb@47400000 usb 0 [ + ] ti-musb-peripheral | |-- usb@47401000 eth 1 [ + ] usb_ether | | `-- usb_ether usb 0 [ ] ti-musb-host | `-- usb@47401800 eth 0 [ + ] eth_cpsw `-- ethernet@4a100000 => i2c dev 0 Setting bus to 0 => dm tree Class index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver rsa_mod_ex 0 [ ] mod_exp_sw |-- mod_exp_sw simple_bus 0 [ + ] generic_simple_bus `-- ocp simple_bus 1 [ ] generic_simple_bus |-- l4_wkup@44c00000 simple_bus 2 [ ] generic_simple_bus | |-- prcm@200000 simple_bus 3 [ ] generic_simple_bus | `-- scm@210000 simple_bus 4 [ ] generic_simple_bus | `-- scm_conf@0 gpio 0 [ + ] gpio_omap |-- gpio@44e07000 gpio 1 [ ] gpio_omap |-- gpio@4804c000 gpio 2 [ ] gpio_omap |-- gpio@481ac000 gpio 3 [ ] gpio_omap |-- gpio@481ae000 serial 0 [ + ] omap_serial |-- serial@44e09000 i2c 0 [ + ] i2c_omap |-- i2c@44e0b000 i2c 1 [ ] i2c_omap |-- i2c@4819c000 mmc 0 [ + ] omap_hsmmc |-- mmc@48060000 blk 0 [ + ] mmc_blk | `-- mmc@48060000.blk mmc 1 [ + ] omap_hsmmc |-- mmc@481d8000 blk 1 [ ] mmc_blk | `-- mmc@481d8000.blk timer 0 [ + ] omap_timer |-- timer@48040000 timer 1 [ ] omap_timer |-- timer@48042000 timer 2 [ ] omap_timer |-- timer@48044000 timer 3 [ ] omap_timer |-- timer@48046000 timer 4 [ ] omap_timer |-- timer@48048000 timer 5 [ ] omap_timer |-- timer@4804a000 misc 0 [ + ] ti-musb-wrapper |-- usb@47400000 usb 0 [ + ] ti-musb-peripheral | |-- usb@47401000 eth 1 [ + ] usb_ether | | `-- usb_ether usb 0 [ ] ti-musb-host | `-- usb@47401800 eth 0 [ + ] eth_cpsw `-- ethernet@4a100000 => i2c dev 2 Setting bus to 2 data abort pc : [<9ff887fa>] lr : [<9ff887cf>] reloc pc : [<808207fa>] lr : [<808207cf>] sp : 9df3af08 ip : 9df3aedc fp : 000003e8 r10: 9df4b478 r9 : 9df47eb8 r8 : 9df4b4e8 r7 : 00000002 r6 : 00000001 r5 : 9ffc29a7 r4 : 4819c000 r3 : 000000a4 r2 : 0000aec4 r1 : 000050b4 r0 : 9df48748 Flags: nzCv IRQs off FIQs on Mode SVC_32 Code: 2e002702 461dbf18 7b7af44f 6004f8c8 (5ae37a6b) Resetting CPU ... resetting ... U-Boot SPL 2019.01-g333c3e72d3 (Apr 19 2020 - 11:21:12 +0000) Trying to boot from MMC1 U-Boot 2019.01-g333c3e72d3 (Apr 19 2020 - 11:21:12 +0000) CPU : AM335X-GP rev 2.1 Model: TI AM335x BeagleBone Black DRAM: 512 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from FAT... *** Warning - bad CRC, using default environment <ethaddr> not set. Validating first E-fuse MAC Net: eth0: ethernet@4a100000 Warning: usb_ether MAC addresses don't match: Address in ROM is de:ad:be:ef:00:01 Address in environment is 04:79:b7:a8:fd:e0 , eth1: usb_ether Hit any key to stop autoboot: 0
您好、Adarsh、
默认情况下、所有器件都将从0开始以简单的顺序获得 DM 序列号/索引。
如下面列出的"dm 树"所示、器件 i2c 端口2 (i2c@4819c000)映射到 u-boot DM 中的 i2c 索引#1。
>>>> from "dm tree" on your board => dm tree Class index Probed Driver Name ----------------------------------------------------------- i2c 0 [ ] i2c_omap |-- i2c@44e0b000 i2c 1 [ ] i2c_omap |-- i2c@4819c000
您是否曾尝试使用"i2c dev 1"来选择电路板上的器件 i2c 端口#2?
最棒的
-香港
您好、Hong、
根据您的建议、我尝试了"i2c dev 1"。但似乎不会发生这种情况。
U-Boot SPL 2019.01-g333c3e72d3 (Apr 19 2020 - 11:21:12 +0000) Trying to boot from MMC1 U-Boot 2019.01-g333c3e72d3 (Apr 19 2020 - 11:21:12 +0000) CPU : AM335X-GP rev 2.1 Model: TI AM335x BeagleBone Black DRAM: 512 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from FAT... *** Warning - bad CRC, using default environment <ethaddr> not set. Validating first E-fuse MAC Net: eth0: ethernet@4a100000 Warning: usb_ether MAC addresses don't match: Address in ROM is de:ad:be:ef:00:01 Address in environment is 04:79:b7:a8:fd:e0 , eth1: usb_ether Hit any key to stop autoboot: 0 => i2c dev 0 Setting bus to 0 => i2c dev 1 Setting bus to 1 Failure changing bus number (-19) => dm tree Class index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver rsa_mod_ex 0 [ ] mod_exp_sw |-- mod_exp_sw simple_bus 0 [ + ] generic_simple_bus `-- ocp simple_bus 1 [ ] generic_simple_bus |-- l4_wkup@44c00000 simple_bus 2 [ ] generic_simple_bus | |-- prcm@200000 simple_bus 3 [ ] generic_simple_bus | `-- scm@210000 simple_bus 4 [ ] generic_simple_bus | `-- scm_conf@0 gpio 0 [ + ] gpio_omap |-- gpio@44e07000 gpio 1 [ ] gpio_omap |-- gpio@4804c000 gpio 2 [ ] gpio_omap |-- gpio@481ac000 gpio 3 [ ] gpio_omap |-- gpio@481ae000 serial 0 [ + ] omap_serial |-- serial@44e09000 i2c 0 [ + ] i2c_omap |-- i2c@44e0b000 i2c 1 [ ] i2c_omap |-- i2c@4819c000 mmc 0 [ + ] omap_hsmmc |-- mmc@48060000 blk 0 [ + ] mmc_blk | `-- mmc@48060000.blk mmc 1 [ + ] omap_hsmmc |-- mmc@481d8000 blk 1 [ ] mmc_blk | `-- mmc@481d8000.blk timer 0 [ + ] omap_timer |-- timer@48040000 timer 1 [ ] omap_timer |-- timer@48042000 timer 2 [ ] omap_timer |-- timer@48044000 timer 3 [ ] omap_timer |-- timer@48046000 timer 4 [ ] omap_timer |-- timer@48048000 timer 5 [ ] omap_timer |-- timer@4804a000 misc 0 [ + ] ti-musb-wrapper |-- usb@47400000 usb 0 [ + ] ti-musb-peripheral | |-- usb@47401000 eth 1 [ + ] usb_ether | | `-- usb_ether usb 0 [ ] ti-musb-host | `-- usb@47401800 eth 0 [ + ] eth_cpsw `-- ethernet@4a100000 =>
您好、Adarsh、
我们可以在您的电路板上运行快速测试@u-boot 提示符吗?
#1 => md.l 0x44E00044 1 44e00044: 00030000 .... #2 => mw.l 0x44E00044 0x2 1 #3 => md.l 0x44E00044 1 44e00044: 00000002
电路板上 CMD #1的返回值是多少?
如果 CMD #1返回如上所示的"0x00030000"、则继续运行 CMDS #2和#3。
然后、运行"i2c dev 1"以查看是否有差异?
最棒的
-香港
您好、Hong、
输出:
U-Boot SPL 2019.01-g333c3e72d3 (Apr 19 2020 - 11:21:12 +0000) Trying to boot from MMC1 U-Boot 2019.01-g333c3e72d3 (Apr 19 2020 - 11:21:12 +0000) CPU : AM335X-GP rev 2.1 Model: TI AM335x BeagleBone Black DRAM: 512 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from FAT... *** Warning - bad CRC, using default environment <ethaddr> not set. Validating first E-fuse MAC Net: eth0: ethernet@4a100000 Warning: usb_ether MAC addresses don't match: Address in ROM is de:ad:be:ef:00:01 Address in environment is 04:79:b7:a8:fd:e0 , eth1: usb_ether Hit any key to stop autoboot: 0 => md.l 0x44E00044 1 44e00044: 00030000 .... => mw.l 0x44E00044 0x2 1 => md.l 0x44E00044 1 44e00044: 00000002 .... => i2c dev 1 Setting bus to 1 Failure changing bus number (-19) =>
您好、Adarsh、
根据在电路板上捕获的日志、似乎未在 SPL/u-boot 中启用 i2c #2时钟。
=> MD.L 0x44E00044 1.
44e00044:00030000
我们是否可以将以下一行添加到"arch/arm/cpU/armv7/am33xx/clock_am33xx.c"中、然后重新运行测试?
before: &cmper->i2c1clkctrl, /* enabling clock for i2c #1 */ after &cmper->i2c1clkctrl, /* enabling clock for i2c #1 */ + &cmper->i2c2clkctrl, /* enabling clock for i2c #2 */
最棒的
-香港
您好、Hong、
在"ti-processor-sdk-linux-am335x-evm-06.03.00.106" SDK 发行版的 u-boot 代码中,文件"clock_am33xx.c"位于
"arch/arm/mach-OMAP2/am33xx"。 应用建议的修改后的输出:
U-Boot SPL 2019.01-gc148924-dirty (Apr 23 2021 - 10:51:42 +0530) Trying to boot from MMC1 U-Boot 2019.01-gc148924-dirty (Apr 23 2021 - 10:51:42 +0530) CPU : AM335X-GP rev 2.1 Model: TI AM335x BeagleBone Black DRAM: 512 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from FAT... *** Warning - bad CRC, using default environment <ethaddr> not set. Validating first E-fuse MAC Net: eth0: ethernet@4a100000 Warning: usb_ether MAC addresses don't match: Address in ROM is de:ad:be:ef:00:01 Address in environment is 04:79:b7:a8:fd:e0 , eth1: usb_ether Hit any key to stop autoboot: 0 => dm tree Class index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver rsa_mod_ex 0 [ ] mod_exp_sw |-- mod_exp_sw simple_bus 0 [ + ] generic_simple_bus `-- ocp simple_bus 1 [ ] generic_simple_bus |-- l4_wkup@44c00000 simple_bus 2 [ ] generic_simple_bus | |-- prcm@200000 simple_bus 3 [ ] generic_simple_bus | `-- scm@210000 simple_bus 4 [ ] generic_simple_bus | `-- scm_conf@0 gpio 0 [ + ] gpio_omap |-- gpio@44e07000 gpio 1 [ ] gpio_omap |-- gpio@4804c000 gpio 2 [ ] gpio_omap |-- gpio@481ac000 gpio 3 [ ] gpio_omap |-- gpio@481ae000 serial 0 [ + ] omap_serial |-- serial@44e09000 i2c 0 [ ] i2c_omap |-- i2c@44e0b000 i2c 1 [ ] i2c_omap |-- i2c@4819c000 mmc 0 [ + ] omap_hsmmc |-- mmc@48060000 blk 0 [ + ] mmc_blk | `-- mmc@48060000.blk mmc 1 [ + ] omap_hsmmc |-- mmc@481d8000 blk 1 [ ] mmc_blk | `-- mmc@481d8000.blk timer 0 [ + ] omap_timer |-- timer@48040000 timer 1 [ ] omap_timer |-- timer@48042000 timer 2 [ ] omap_timer |-- timer@48044000 timer 3 [ ] omap_timer |-- timer@48046000 timer 4 [ ] omap_timer |-- timer@48048000 timer 5 [ ] omap_timer |-- timer@4804a000 misc 0 [ + ] ti-musb-wrapper |-- usb@47400000 usb 0 [ + ] ti-musb-peripheral | |-- usb@47401000 eth 1 [ + ] usb_ether | | `-- usb_ether usb 0 [ ] ti-musb-host | `-- usb@47401800 eth 0 [ + ] eth_cpsw `-- ethernet@4a100000 => i2c dev 0 Setting bus to 0 => i2c dev 1 Setting bus to 1 Failure changing bus number (-19) => md.l 0x44E00044 1 44e00044: 00000002 => i2c dev 1 Setting bus to 1 Failure changing bus number (-19) =>
您好、Adarsh、
我将在上一份答复中补充一些澄清。
我在 AM335x GP EVM u-boot 器件树中添加了 i2c 端口#2、并捕获了如下所示的日志:
=> i2c bus Bus 0: i2c@44e0b000 Bus 1: i2c@4802a000 Bus 2: i2c@4819c000
因此、您需要使用"i2c dev 2"来选择电路板上的 i2c 端口#2 (i2c@4819c000)。
我认为在 SPL 代码中添加"i2c DEV 2"后、"i2c DEV 2"现在应该适用于您的电路板。
/arch/arm/mach-omap2/am33xx/clock_am33xx.c" &cmper->i2c1clkctrl, /* enabling clock for i2c #1 */ + &cmper->i2c2clkctrl, /* enabling clock for i2c #2 */
最棒的
-香港
您好、Hong、
能够设置 i2c 总线2,不会出现任何问题。
请将此修复推入下一个"ti-sdk"版本。
此致、
Adarsh
U-Boot SPL 2019.01-gc148924-dirty (Apr 23 2021 - 10:51:42 +0530) Trying to boot from MMC1 U-Boot 2019.01-gc148924-dirty (Apr 23 2021 - 10:51:42 +0530) CPU : AM335X-GP rev 2.1 Model: TI AM335x BeagleBone Black DRAM: 512 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from FAT... *** Warning - bad CRC, using default environment <ethaddr> not set. Validating first E-fuse MAC Net: eth0: ethernet@4a100000 Warning: usb_ether MAC addresses don't match: Address in ROM is de:ad:be:ef:00:01 Address in environment is 04:79:b7:a8:fd:e0 , eth1: usb_ether Hit any key to stop autoboot: 0 => dm tree Class index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver rsa_mod_ex 0 [ ] mod_exp_sw |-- mod_exp_sw simple_bus 0 [ + ] generic_simple_bus `-- ocp simple_bus 1 [ ] generic_simple_bus |-- l4_wkup@44c00000 simple_bus 2 [ ] generic_simple_bus | |-- prcm@200000 simple_bus 3 [ ] generic_simple_bus | `-- scm@210000 simple_bus 4 [ ] generic_simple_bus | `-- scm_conf@0 gpio 0 [ + ] gpio_omap |-- gpio@44e07000 gpio 1 [ ] gpio_omap |-- gpio@4804c000 gpio 2 [ ] gpio_omap |-- gpio@481ac000 gpio 3 [ ] gpio_omap |-- gpio@481ae000 serial 0 [ + ] omap_serial |-- serial@44e09000 i2c 0 [ ] i2c_omap |-- i2c@44e0b000 i2c 1 [ ] i2c_omap |-- i2c@4819c000 mmc 0 [ + ] omap_hsmmc |-- mmc@48060000 blk 0 [ + ] mmc_blk | `-- mmc@48060000.blk mmc 1 [ + ] omap_hsmmc |-- mmc@481d8000 blk 1 [ ] mmc_blk | `-- mmc@481d8000.blk timer 0 [ + ] omap_timer |-- timer@48040000 timer 1 [ ] omap_timer |-- timer@48042000 timer 2 [ ] omap_timer |-- timer@48044000 timer 3 [ ] omap_timer |-- timer@48046000 timer 4 [ ] omap_timer |-- timer@48048000 timer 5 [ ] omap_timer |-- timer@4804a000 misc 0 [ + ] ti-musb-wrapper |-- usb@47400000 usb 0 [ + ] ti-musb-peripheral | |-- usb@47401000 eth 1 [ + ] usb_ether | | `-- usb_ether usb 0 [ ] ti-musb-host | `-- usb@47401800 eth 0 [ + ] eth_cpsw `-- ethernet@4a100000 => i2c dev 0 Setting bus to 0 => i2c probe Valid chip addresses: 24 34 50 => i2c dev 2 Setting bus to 2 => => dm tree Class index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver rsa_mod_ex 0 [ ] mod_exp_sw |-- mod_exp_sw simple_bus 0 [ + ] generic_simple_bus `-- ocp simple_bus 1 [ ] generic_simple_bus |-- l4_wkup@44c00000 simple_bus 2 [ ] generic_simple_bus | |-- prcm@200000 simple_bus 3 [ ] generic_simple_bus | `-- scm@210000 simple_bus 4 [ ] generic_simple_bus | `-- scm_conf@0 gpio 0 [ + ] gpio_omap |-- gpio@44e07000 gpio 1 [ ] gpio_omap |-- gpio@4804c000 gpio 2 [ ] gpio_omap |-- gpio@481ac000 gpio 3 [ ] gpio_omap |-- gpio@481ae000 serial 0 [ + ] omap_serial |-- serial@44e09000 i2c 0 [ + ] i2c_omap |-- i2c@44e0b000 i2c_generi 0 [ + ] i2c_generic_chip_drv | |-- generic_24 i2c_generi 1 [ + ] i2c_generic_chip_drv | |-- generic_34 i2c_generi 2 [ + ] i2c_generic_chip_drv | `-- generic_50 i2c 1 [ + ] i2c_omap |-- i2c@4819c000 mmc 0 [ + ] omap_hsmmc |-- mmc@48060000 blk 0 [ + ] mmc_blk | `-- mmc@48060000.blk mmc 1 [ + ] omap_hsmmc |-- mmc@481d8000 blk 1 [ ] mmc_blk | `-- mmc@481d8000.blk timer 0 [ + ] omap_timer |-- timer@48040000 timer 1 [ ] omap_timer |-- timer@48042000 timer 2 [ ] omap_timer |-- timer@48044000 timer 3 [ ] omap_timer |-- timer@48046000 timer 4 [ ] omap_timer |-- timer@48048000 timer 5 [ ] omap_timer |-- timer@4804a000 misc 0 [ + ] ti-musb-wrapper |-- usb@47400000 usb 0 [ + ] ti-musb-peripheral | |-- usb@47401000 eth 1 [ + ] usb_ether | | `-- usb_ether usb 0 [ ] ti-musb-host | `-- usb@47401800 eth 0 [ + ] eth_cpsw `-- ethernet@4a100000 =>