AM3352: How to enable SPI clock?

Daniel Cheng1

Mastermind 7245 points

Part Number: AM3352

Hi Expert,

SDK version is am335x-evm-linux-sdk-bin-08.02.00.24

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/932918/am3352-u-boot-use-tpm2-0-via-spi1

Link say that have to to enable the spi1clkctrl.

But I can not find out

arch/arm/mach-omap2/am33xx/clock_am33xx.c

in the function "void enable_basic_clocks(void)"

So how to enable SPI clock?

Thanks

Daniel

over 3 years ago

+1 Hong Guan64 over 3 years ago

TI__Guru 69980 points

Hi Daniel,
spi1 clock is not enabled by default on AM335x SPL. So spi1 clock needs to be explicit enabled in SPL as in the reference e2e
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/932918/am3352-u-boot-use-tpm2-0-via-spi1/3449086#3449086

arch/arm/mach-omap2/am33xx/clock_am33xx.c
u32 *const clk_modules_explicit_en[] = {
...
&cmper->spi0clkctrl,
&cmper->spi1clkctrl,	<== add this line
...

Best,
-Hong

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AM3352: How to enable SPI clock?