On Tue, 7 May 2019 13:29:41 +0000 Peng Fan <peng....@nxp.com> wrote: > > 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....@nxp.com> wrote: > > > > > Add pre reloc flag to use this driver before relocation > > > > > > Signed-off-by: Peng Fan <peng....@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.
I think that there is OR -> DM_FLAG_PRE_RELOC OR DTS attribute (u-boot,dm-spl {pre-reloc}) to use device in early SPL. Please look into drivers/core/lists.c Line 175: if (pre_reloc_only) { if (!dm_ofnode_pre_reloc(node)ยท&& !(entry->flags & DM_FLAG_PRE_RELOC)) return 0; } We do not bind device only if there is NO DM_FLAG_PRE_RELOC set AND the u-boot,dm-* property is not set in corresponding DTS node. > 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: > > lu...@denx.de 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: lu...@denx.de
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