[U-Boot] [i.MX8MM+CCF 12/41] clk: fixed_rate: add pre reloc flag

Peng Fan peng.fan at nxp.com
Tue May 7 13:29:41 UTC 2019


> Subject: Re: [i.MX8MM+CCF 12/41] clk: fixed_rate: add pre reloc flag
> 
> On Tue, 30 Apr 2019 10:18:12 +0000
> Peng Fan <peng.fan at nxp.com> wrote:
> 
> > Add pre reloc flag to use this driver before relocation
> >
> > Signed-off-by: Peng Fan <peng.fan at nxp.com>
> > ---
> >  drivers/clk/clk_fixed_rate.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/clk/clk_fixed_rate.c
> > b/drivers/clk/clk_fixed_rate.c index 069e643fbc..debada1463 100644
> > --- a/drivers/clk/clk_fixed_rate.c
> > +++ b/drivers/clk/clk_fixed_rate.c
> > @@ -45,4 +45,5 @@ U_BOOT_DRIVER(clk_fixed_rate) = {
> >  	.ofdata_to_platdata = clk_fixed_rate_ofdata_to_platdata,
> >  	.platdata_auto_alloc_size = sizeof(struct clk_fixed_rate),
> >  	.ops = &clk_fixed_rate_ops,
> > +	.flags = DM_FLAG_PRE_RELOC,
> >  };
> 
> This probably shall be done with proper dts file (from TPC70 - imx6q
> conversion code):

My understanding is DM_FLAG_PRE_RELOC will let the driver could be used
before relocation. The dts u-boot,dm-spl or u-boot,dm-pre-reloc
is just to mark the device could be used at the corresponding stage.
Only modify dts will not make it work without the DM_FLAG_PRE_RELOC,
Right?

Thanks,
Peng.

> 
> +#include "imx6qdl-u-boot.dtsi"
> +
> +/ {
> +	clocks {
> +		u-boot,dm-spl;
> +		osc {
> +			u-boot,dm-spl;
> +		};
> +	};
> +};
> +
> +&clks {
> +	u-boot,dm-pre-reloc;
> +};
> 
> 
> 
> Best regards,
> 
> Lukasz Majewski
> 
> --
> 
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email:
> lukma at denx.de


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