Re: [PATCH] clk: imx25: set correct parents for ssi ipg clocks

[Martin Kaiser <martin@kaiser.cx>]

Hi Fabio,

Thus wrote Fabio Estevam (festevam@gmail.com):

> I get audio working from SSI1, but I guess this is due to the fact
> that the bootloader enables the SSI clock:

> I have the following in U-Boot:

> /* Enable the clocks */
> DATA 4 0x53f8000c 0x1fffffff
> DATA 4 0x53f80010 0xffffffff
> DATA 4 0x53f80014 0xfdfff

I'm using the same initial settings.

Nevertheless, ssi1_ipg_per is disbled after loading the kernel.

Digging into this a bit more, it turned out that without my patch,
clk_disable_unused() recognizes ssi1_ipg_per as unused and disables it.

If my patch is applied and ssi1_ipg_per is declared as parent of
ssi1_ipg, clk_disable_unused() will not disable it and fsl_ssi_startup()
will enable both ssi1_ipg_per and ssi1_ipg before playing sound.

Best regards,
Martin