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Date: Mon, 4 Dec 2023 22:57:38 +0530
From: Nitin Rawat <quic_nitirawa@...cinc.com>
To: Luca Weiss <luca.weiss@...rphone.com>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Manivannan Sadhasivam <mani@...nel.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>
CC: <~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 12/4/2023 5:51 PM, 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?
>
> Also, with "PHY" in the name, it's interesting that this is not for the
> phy ;)
>
> Regards
> Luca
>
Hi Luca,
For sc7280 there is no PHY GDSC and only controller GDSC is there.
Hence, I would suggest to update the binding to reflect that
power-domains is not a required field.
Regards,
Nitin
>>
>>> +
>>> + 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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