Messages in this thread | | | From | Fabio Estevam <> | Date | Tue, 6 Mar 2018 19:23:11 -0300 | Subject | Re: [PATCH] clk: imx25: set correct parents for ssi ipg clocks |
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Hi Martin,
On Tue, Mar 6, 2018 at 7:02 PM, Martin Kaiser <martin@kaiser.cx> wrote: > The ssi1_ipg clock depends on ssi1_ipg_per. Set ssi1_ipg_per as parent > clock of ssi1_ipg. Without this link, the fsl_ssi driver does not > activate the ssi1_ipg clock correctly and ssi1 is unable to transfer > audio data. > > Fix the parent clock of ssi2 as well, it shows the same behaviour. > > Signed-off-by: Martin Kaiser <martin@kaiser.cx> > --- > Dear all, > > could you have a look at this patch? This makes SSI1 and 2 work for me.
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 will try tomorrow to disable the SSI1 clock from U-Boot and apply your patch.
Will let you know how my testing goes.
> With the default "ipg" parent clocks, I get no ipg clocks on the SSIs. > However, I was wondering why we don't need anything similar e.g. for the > UARTs...
Maybe your bootloader is already turning on the UART clocks?
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