Re: linux-next: build warning after merge of the aspeed tree

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On Mon, 11 May 2020 at 15:19, Rob Herring <robh+dt@xxxxxxxxxx> wrote:
>
> On Fri, May 8, 2020 at 1:40 AM Joel Stanley <joel@xxxxxxxxx> wrote:
> >
> > On Wed, 6 May 2020 at 23:13, Joel Stanley <joel@xxxxxxxxx> wrote:
> > >
> > > Hi Rob,
> > >
> > > On Wed, 6 May 2020 at 23:10, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> > > >
> > > > Hi all,
> > > >
> > > > After merging the aspeed tree, today's linux-next build (arm
> > > > multi_v7_defconfig) produced this warning:
> > >
> > > Thanks Stephen.
> > >
> > > > arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts:126.11-130.4: Warning (i2c_bus_reg): /ahb/apb/bus@1e78a000/i2c-bus@80/ipmb1@10: I2C bus unit address format error, expected "40000010"
> > > > arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts:128.3-30: Warning (i2c_bus_reg): /ahb/apb/bus@1e78a000/i2c-bus@80/ipmb1@10:reg: I2C address must be less than 10-bits, got "0x40000010"
> > > > arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts:137.11-141.4: Warning (i2c_bus_reg): /ahb/apb/bus@1e78a000/i2c-bus@100/ipmb3@10: I2C bus unit address format error, expected "40000010"
> > > > arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts:139.3-30: Warning (i2c_bus_reg): /ahb/apb/bus@1e78a000/i2c-bus@100/ipmb3@10:reg: I2C address must be less than 10-bits, got "0x40000010"
> > > > arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts:148.11-152.4: Warning (i2c_bus_reg): /ahb/apb/bus@1e78a000/i2c-bus@180/ipmb5@10: I2C bus unit address format error, expected "40000010"
> > > > arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts:150.3-30: Warning (i2c_bus_reg): /ahb/apb/bus@1e78a000/i2c-bus@180/ipmb5@10:reg: I2C address must be less than 10-bits, got "0x40000010"
> > > > arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts:159.11-163.4: Warning (i2c_bus_reg): /ahb/apb/bus@1e78a000/i2c-bus@300/ipmb7@10: I2C bus unit address format error, expected "40000010"
> > > > arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts:161.3-30: Warning (i2c_bus_reg): /ahb/apb/bus@1e78a000/i2c-bus@300/ipmb7@10:reg: I2C address must be less than 10-bits, got "0x40000010"
> > >
> > > These are IPMB nodes with the SLAVE_ADDRESS bit set:
> > >
> > > +&i2c5 {
> > > +       //Host3 IPMB bus
> > > +       status = "okay";
> > > +       multi-master;
> > > +       ipmb5@10 {
> > > +               compatible = "ipmb-dev";
> > > +               reg = <(0x10 | I2C_OWN_SLAVE_ADDRESS)>;
> > > +               i2c-protocol;
> > > +       };
> > >
> > > This is a correct entry, so dtc should not warn about it.
> >
> > I sent a patch for dtc here:
> > https://lore.kernel.org/lkml/20200508063904.60162-1-joel@xxxxxxxxx/
>
> Patches for dtc need to be against upstream dtc. There's already a
> similar patch posted for it which I commented on and never saw a
> respin.

Can I suggest some instructions in scsripts/dtc explaining that you
don't take patches in the kernel tree for this code?

I've sent the patch so it applies to the dtc tree. It would be good to
see that change propagate over to -next as others have reported this
warning.

Cheers,

Joel



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