Re: [PATCH] arm64: dts: qcom: sm8450: fix interconnects property of UFS node

[Bjorn Andersson <bjorn.andersson@linaro.org>]

On Tue 05 Apr 12:38 CDT 2022, Dmitry Baryshkov wrote:

> On Tue, 5 Apr 2022 at 20:17, Bjorn Andersson <bjorn.andersson@linaro.org> wrote:
> >
> > On Tue 05 Apr 08:38 PDT 2022, Dmitry Baryshkov wrote:
> >
> > > On 11/03/2022 01:19, Vladimir Zapolskiy wrote:
> > > > All interconnect device tree nodes on sm8450 are 2-cells, however in
> > > > UFS node they are handled as 1-cells, fix it.
> > > >
> > > > Fixes: aa2d0bf04a3c ("arm64: dts: qcom: sm8450: add interconnect nodes")
> > > > Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
> > >
> > > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> > >
> > > Bjorn, could you please this pick for the -rc kernel?
> > >
> >
> > The change is obviously correct, but what difference does this change
> > make with the current implementation?
> 
> it makes interconnect paths probe correctly. All NoC have
> #interconnec-cells = <2> now.
> 

But there's no code in the UFS driver that calls of_icc_get(), so what
does this actually do? (Other than correcting the dtb for the day when
we add that support to the driver).

Regards,
Bjorn

> >
> > Regards,
> > Bjorn
> >
> > > > ---
> > > >   arch/arm64/boot/dts/qcom/sm8450.dtsi | 4 ++--
> > > >   1 file changed, 2 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
> > > > index 0cd5af8c03bd..bbd38b55e976 100644
> > > > --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
> > > > +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
> > > > @@ -1376,8 +1376,8 @@ ufs_mem_hc: ufshc@1d84000 {
> > > >                     iommus = <&apps_smmu 0xe0 0x0>;
> > > > -                   interconnects = <&aggre1_noc MASTER_UFS_MEM &mc_virt SLAVE_EBI1>,
> > > > -                                   <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_UFS_MEM_CFG>;
> > > > +                   interconnects = <&aggre1_noc MASTER_UFS_MEM 0 &mc_virt SLAVE_EBI1 0>,
> > > > +                                   <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_UFS_MEM_CFG 0>;
> > > >                     interconnect-names = "ufs-ddr", "cpu-ufs";
> > > >                     clock-names =
> > > >                             "core_clk",
> > >
> > >
> > > --
> > > With best wishes
> > > Dmitry
> 
> 
> 
> -- 
> With best wishes
> Dmitry