i.MX7D: Howto init USB HSIC in U-Boot

[Niebel-TQ]

Hello, I try to use the third USB controller on a custom board. When writng the PORTSC register system stalls.

What we have done so far:

- use U-Boot rel_imx_4.1.15_1.2.0_ga

- extend ehci.mx to support 3rd controller witch HSIC

- on chip regulator 1P0D and HSIC_1P2 are enabled

- enable_usboh3_clk is called

any hints?

Thanks

Markus

[ssekar15]

@Niebel-TQ @igorpadykov I'm also facing same problem with U-boot hangs on hsic PORTSC register.

Have you succeed and do you have any updates?

[igorpadykov]

Hi Markus

hanging may be due to clocks gating in CCM_CCGRn registers,

one can look at linux hsic implementation

linux-2.6-imx.git - Freescale i.MX Linux Tree

and post on uboot mail list

U-Boot Info Page

Best regards

igor

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