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Message-Id: <CXG8INYXCEXN.C6TF6FALDP6D@fairphone.com>
Date: Tue, 05 Dec 2023 08:51:05 +0100
From: "Luca Weiss" <luca.weiss@...rphone.com>
To: "Manivannan Sadhasivam" <mani@...nel.org>
Cc: "Nitin Rawat" <quic_nitirawa@...cinc.com>,
"Andy Gross" <agross@...nel.org>,
"Bjorn Andersson" <andersson@...nel.org>,
"Konrad Dybcio" <konrad.dybcio@...aro.org>,
"Alim Akhtar" <alim.akhtar@...sung.com>,
"Avri Altman" <avri.altman@....com>,
"Bart Van Assche" <bvanassche@....org>,
"Rob Herring" <robh+dt@...nel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
"Conor Dooley" <conor+dt@...nel.org>,
<cros-qcom-dts-watchers@...omium.org>,
<~postmarketos/upstreaming@...ts.sr.ht>,
<phone-devel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<linux-scsi@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 2/3] arm64: dts: qcom: sc7280: Add UFS nodes for
sc7280 soc
On Mon Dec 4, 2023 at 6:28 PM CET, Manivannan Sadhasivam wrote:
> On Mon, Dec 04, 2023 at 01:21:42PM +0100, Luca Weiss wrote:
> > On Mon Dec 4, 2023 at 1:15 PM CET, Nitin Rawat wrote:
> > >
> > >
> > > On 12/4/2023 3:54 PM, Luca Weiss wrote:
> > > > From: Nitin Rawat <quic_nitirawa@...cinc.com>
> > > >
> > > > Add UFS host controller and PHY nodes for sc7280 soc.
> > > >
> > > > Signed-off-by: Nitin Rawat <quic_nitirawa@...cinc.com>
> > > > Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> > > > Tested-by: Konrad Dybcio <konrad.dybcio@...aro.org> # QCM6490 FP5
> > > > [luca: various cleanups and additions as written in the cover letter]
> > > > Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
> > > > ---
> > > > arch/arm64/boot/dts/qcom/sc7280.dtsi | 74 +++++++++++++++++++++++++++++++++++-
> > > > 1 file changed, 73 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> > > > index 04bf85b0399a..8b08569f2191 100644
> > > > --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> > > > +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> > > > @@ -15,6 +15,7 @@
> > > > #include <dt-bindings/dma/qcom-gpi.h>
> > > > #include <dt-bindings/firmware/qcom,scm.h>
> > > > #include <dt-bindings/gpio/gpio.h>
> > > > +#include <dt-bindings/interconnect/qcom,icc.h>
> > > > #include <dt-bindings/interconnect/qcom,osm-l3.h>
> > > > #include <dt-bindings/interconnect/qcom,sc7280.h>
> > > > #include <dt-bindings/interrupt-controller/arm-gic.h>
> > > > @@ -906,7 +907,7 @@ gcc: clock-controller@...000 {
> > > > clocks = <&rpmhcc RPMH_CXO_CLK>,
> > > > <&rpmhcc RPMH_CXO_CLK_A>, <&sleep_clk>,
> > > > <0>, <&pcie1_phy>,
> > > > - <0>, <0>, <0>,
> > > > + <&ufs_mem_phy 0>, <&ufs_mem_phy 1>, <&ufs_mem_phy 2>,
> > > > <&usb_1_qmpphy QMP_USB43DP_USB3_PIPE_CLK>;
> > > > clock-names = "bi_tcxo", "bi_tcxo_ao", "sleep_clk",
> > > > "pcie_0_pipe_clk", "pcie_1_pipe_clk",
> > > > @@ -2238,6 +2239,77 @@ pcie1_phy: phy@...e000 {
> > > > status = "disabled";
> > > > };
> > > >
> > > > + ufs_mem_hc: ufs@...4000 {
> > > > + compatible = "qcom,sc7280-ufshc", "qcom,ufshc",
> > > > + "jedec,ufs-2.0";
> > > > + reg = <0x0 0x01d84000 0x0 0x3000>;
> > > > + interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>;
> > > > + phys = <&ufs_mem_phy>;
> > > > + phy-names = "ufsphy";
> > > > + lanes-per-direction = <2>;
> > > > + #reset-cells = <1>;
> > > > + resets = <&gcc GCC_UFS_PHY_BCR>;
> > > > + reset-names = "rst";
> > > > +
> > > > + power-domains = <&gcc GCC_UFS_PHY_GDSC>;
> > > > + required-opps = <&rpmhpd_opp_nom>;
> > > > +
> > > > + iommus = <&apps_smmu 0x80 0x0>;
> > > > + dma-coherent;
> > > > +
> > > > + interconnects = <&aggre1_noc MASTER_UFS_MEM QCOM_ICC_TAG_ALWAYS
> > > > + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
> > > > + <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ALWAYS
> > > > + &cnoc2 SLAVE_UFS_MEM_CFG QCOM_ICC_TAG_ALWAYS>;
> > > > + interconnect-names = "ufs-ddr", "cpu-ufs";
> > > > +
> > > > + clocks = <&gcc GCC_UFS_PHY_AXI_CLK>,
> > > > + <&gcc GCC_AGGRE_UFS_PHY_AXI_CLK>,
> > > > + <&gcc GCC_UFS_PHY_AHB_CLK>,
> > > > + <&gcc GCC_UFS_PHY_UNIPRO_CORE_CLK>,
> > > > + <&rpmhcc RPMH_CXO_CLK>,
> > > > + <&gcc GCC_UFS_PHY_TX_SYMBOL_0_CLK>,
> > > > + <&gcc GCC_UFS_PHY_RX_SYMBOL_0_CLK>,
> > > > + <&gcc GCC_UFS_PHY_RX_SYMBOL_1_CLK>;
> > > > + clock-names = "core_clk",
> > > > + "bus_aggr_clk",
> > > > + "iface_clk",
> > > > + "core_clk_unipro",
> > > > + "ref_clk",
> > > > + "tx_lane0_sync_clk",
> > > > + "rx_lane0_sync_clk",
> > > > + "rx_lane1_sync_clk";
> > > > + freq-table-hz =
> > > > + <75000000 300000000>,
> > > > + <0 0>,
> > > > + <0 0>,
> > > > + <75000000 300000000>,
> > > > + <0 0>,
> > > > + <0 0>,
> > > > + <0 0>,
> > > > + <0 0>;
> > > > + status = "disabled";
> > > > + };
> > > > +
> > > > + ufs_mem_phy: phy@...7000 {
> > > > + compatible = "qcom,sc7280-qmp-ufs-phy";
> > > > + reg = <0x0 0x01d87000 0x0 0xe00>;
> > > > + clocks = <&rpmhcc RPMH_CXO_CLK>,
> > > > + <&gcc GCC_UFS_PHY_PHY_AUX_CLK>,
> > > > + <&gcc GCC_UFS_1_CLKREF_EN>;
> > > > + clock-names = "ref", "ref_aux", "qref";
> > > > +
> > > > + power-domains = <&gcc GCC_UFS_PHY_GDSC>;
> >
> > Hi Nitin,
> >
> > >
> > > GCC_UFS_PHY_GDSC is UFS controller GDSC. For sc7280 Phy we don't need this.
> >
> > In the current dt-bindings the power-domains property is required.
> >
> > Is there another power-domain for the PHY to use, or do we need to
> > adjust the bindings to not require power-domains property for ufs phy on
> > sc7280?
> >
>
> PHYs are backed by MX power domain. So you should use that.
Sounds reasonable (though I understand little how the SoC is wired up
internally).
>
> > Also, with "PHY" in the name, it's interesting that this is not for the
> > phy ;)
> >
>
> Yes, confusing indeed. But the controllers (PCIe, UFS, USB etc...) are backed by
> GDSCs and all the analog components (PHYs) belong to MX domain since it is kind
> of always ON.
>
> I'll submit a series to fix this for the rest of the SoCs.
Great!
So I'll send v6 with power-domains = <&rpmhpd SC7280_MX>; for the phy.
Regards
Luca
>
> - Mani
>
> > Regards
> > Luca
> >
> > >
> > > > +
> > > > + resets = <&ufs_mem_hc 0>;
> > > > + reset-names = "ufsphy";
> > > > +
> > > > + #clock-cells = <1>;
> > > > + #phy-cells = <0>;
> > > > +
> > > > + status = "disabled";
> > > > + };
> > > > +
> > > > ipa: ipa@...0000 {
> > > > compatible = "qcom,sc7280-ipa";
> > > >
> > > >
> >
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