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Other Parts Discussed in Thread: AM3352
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/669372/linux-am3352-enabling-spi-in-u-boot
工具/软件：Linux
您好！
我们使用512MB DDR3、AM3352处理器进行了定制设计。 如何在 U-Boot 中启用 SPI1。 为了检查目的，在 U-Boot 中必须进行哪些更改？
此致、
Avinash N
你好 ，Tsvetolin Shulev，
在我们的电路板中、我们将 CS1用于 SPI1、但在上面的参考中、为 SPI1提供的引脚多路复用器用于 CS0
SPI1 - CS0：
(McASP0_aclkx)- SPI1_SCLK (McASP0_FSX) - SPI1_D0 (McASP0_axr0) - SPI1_D1 (McASP0_ahclkr)- SPI1_CS0
您能否提供 SPI1 - CS1 PIN 多路复用器？
当我们在 Linux 驱动程序级别启用 SPI1.1时、会打印下面给出的错误、
[0.961229] spidev spi1.0：db车 DT：spidev 直接列在 DT 中 [0.967356]------ [在此处剪切]----- [0.972080]警告：CPU：0 PID：1 at drivers/spi/spidev.c：719 spidev_probe_0x1d4/0x1e4 () [0.980292]模块链接在： [0.983388] CPU：0 PID：1 Comm：swapper 未被污染4.4.4.41-gf9f6f0db2d #31 [0.990289]硬件名称：通用 AM33XX (平展器件树) [0.996416]回扫： [0.998896][ ](dump_backtrace)从[ ](show_stack+0x18/0x1c) [1.006509] r7：c036ea90 R6：000002CF R5：00000009 R4：00000000 [1.012241][ ](show_stack)从[ ](dump_stack+0x24/0x28) [1.019501][ ](dump_stack)从[ ](warn_slESpath_common+0x88/b4) [1.027642][ ](warn_slowpath_common)、来自[ ](WARN_RASPEK_NULL_0x24/0x2C) [1.036471] R8：00000000 r7：c063720c R6：00000000 R5：eebe6c00 R4：eebe6c00 [1.043241][ ](warn_slowpath_null)、来自[ ](spidev_probe +0x1d4/0x1e4) [1.051555][ ](spidev_probe)从[ ](SPI_drv_probe +0x84/b4) [1.059240] R8：00000000 r7：c063720c R6：00000000 R5：c06371fc R4：eebe6c00 [1.066017][ ](SPI_drv_probe)、来自[ ](DRIVER_PROBLE_DEVICE_0x200/0x2ec) [1.074498] r7：c063720c r6：00000000 r5：eebe6c00 r4：c0672ec0 [1.080207][ ](driver_probe_device)从[ ](_device_attach_driver+0x8c/b4) [1.089298] R9：00000000 R8：c0672e9c r7：00000001 R6：eebe6c00 R5：ee85bc48 R4：c063720c [1.097115][ ](_device_attach_driver)、来自[ ](BUS_TO_EASE_DRV+0x68/0x9C) [1.105944] r7：00000001 R6：c0315558 R5：ee85bc48 R4：00000000 [1.111660][ ](bus_for_each _drv)从[ ](_DEVICE_ATT+b8/0x11c) [1.119955] R6：c0636cac r5：eebe6c34 r4：eebe6c00 [1.124620][ ](_device_attach)从[ ](DEVICE_INPLET_PROBE +0x14/0x18) [1.133187] r7：00000000 r6：c0636cac r5：eebe6c00 r4：eebe6c08 [1.138894][ ](DEVICE_INTERY_PROBE)从[ ](BUS_PROBLE_DEVICE_0x8c/0x94) [1.14755][ ](bus_probe_device)、来自[ ](DEVICE_ADD+0x3FC/0x588) [1.155512] r7：00000000 R6：eebe6c00 R5：eebe6800 R4：eebe6c08 [1.161230][ ](device_add)从[ ](SPI_ADD_DEVICE_0xa4/0x160) [1.168916] R10：00000078 R9：ee903010 R8：ef6f0bfc r7：ee903010 R6：00000000 R5：eebe6800 [1.176812] R4：eebe6c00 [1.179361][ ](SPI_ADD_DEVICE)从[ ](of_register_SPI_DEVICE_0x230/0x2f8) [1.188190] r7：eebe6800 R6：00000000 R5：ef6f0f44 R4：eebe6c00 [1.193909][ ](of _register_spi_device)、来自[ ](SPI_REGISTER_MASTER+0x2a4/0x48c) [1.203174] r7：c05924d0 R6：00000000 R5：ef6f0f44 R4：eebe6800 [1.208879][ ](SPI_REGISTER_MASTER)、来自[ ](devm_SPI_register_master+0x40/0x78) [1.218145] R10：00000078 R9：eebe696a R8：c0592dc0 r7：ee903010 R6：eebe6800 R5：eebe6800 [1.226042] R4：eebcb610 [1.228592][ ](devm_spi_register_master)、来自[ ](OMAP2_mcspi_prob+0x2d8/0x364) [1.237856] r7：eebe6800 R6：eebe6800 R5：eebe6aa8 R4：00000000 [1.24357][ ](OMAP2_mcspi_probe)、来自[ ](platform_drv_probe +0x58/b8) [1.252141] R10：00000000 R9：c05cf600 R8：00000000 r7：fffdfb R6：c06372bc R5：fffffffffffffffled [1.260028] R4：ee903010 [1.262589][ ](platform_drv_probe)、来自[ ](DRIVER_PROBLE_DEVICE_0x200/0x2ec) [1.271506] r7：c06372bc r6：00000000 r5：ee903010 r4：c0672ec0 [1.277213][ ](driver_probe_device)从[ ](__driver_attach+0x94/0x98) [1.285664] R9：c05cf600 R8：00000071 r7：00000000 R6：ee903044 R5：c06372bc R4：ee903010 [1.293508][ ](__driver_attach)从[ ](BUS_TO_EASE_DEV_0x70/0xa4) [1.301727] r7：00000000 R6：c03154c0 R5：c06372bc R4：00000000 [1.307430][ ](bus_for_each_dev)、来自[ ](DRIVER_ATT+0x24/0x28) [1.315474] R6：c0631070 R5：eebcd380 R4：c06372bc [1.320129][ ](driver_attach)从[ ](BUS_ADD_DRIVER+0x110/0x21c) [1.328179][ ](BUS_ADD_DRIVER)从[ ](DRIVER_REGISTER+0x80/0xFC) [1.336229] r7：eebcb200 r6：c0608920 r5：c05efd08 r4：c06372bc [1.341944][ ](driver_register)、从[ ](__platform_driver_register+0x48/0x50) [1.351036] R5：c05efd08 R4：c0631070 [1.354641][ ](__platform_driver_register)、来自[ ](OMAP2_mcspi_driver_init+0x1c/0x20) [1.36431] R5：c05efd08 R4：c0608920 [1.368032][ ](OMAP2_mcspi_driver_init)、来自[ ](do_one _initcall+0x98/0x1e0) [1.376961][ ](多个_initcall)、来自[ ](kernel_init_freeable +0x138/0x1cc) [1.385703] R10：00000007 R9：c05cf600 R8：00000071 r7：c05f9830 R6：c06041c8 R5：c06400c0 [1.393601] R4：c06400c0 [1.396160][ ](kernel_init_freable)从[ ](kernel_init+0x18/0xf4) [1.404380] R10：00000000 R9：00000000 R8：00000000 r7：00000000 R6：00000000 R5：c0435a24 [1.412277] R4：c06400c0 [1.414829][ ](kernel_init)、来自[ ](RET_FANK_F叉+0x14/0x3c) [1.422437] R5：c0435a24 R4：00000000 [1.426062]--[结束线迹4aba109559a917b9 ]--
