linux-kernel - Re: [PATCH v5 4/6] arm64: dts: qcom: Add UFS node

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Message-ID: <l5vwputpefdkweti56em37i5asrd3vb7pxhwlzir7webfuk3fl@afcqm3faq2gt>
Date: Fri, 30 Aug 2024 19:25:52 +0200
From: Marcus Glocker <marcus@...gul.ch>
To: Konrad Dybcio <konradybcio@...nel.org>
Cc: Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Marijn Suijten <marijn.suijten@...ainline.org>, linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Abel Vesa <abel.vesa@...aro.org>, 
	Johan Hovold <johan@...nel.org>
Subject: Re: [PATCH v5 4/6] arm64: dts: qcom: Add UFS node

On Fri, Aug 30, 2024 at 02:05:48AM +0200, Konrad Dybcio wrote:

> On 17.08.2024 10:38 PM, Marcus Glocker wrote:
> > Add the UFS Host Controller node.  This was basically copied from the
> > arch/arm64/boot/dts/qcom/sc7180.dtsi file.
> >
> > Signed-off-by: Marcus Glocker <marcus@...gul.ch>
> > Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> > ---
> >  arch/arm64/boot/dts/qcom/x1e80100.dtsi | 72 ++++++++++++++++++++++++++
> >  1 file changed, 72 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi 
> > b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
> > index 7bca5fcd7d52..9f01b3ff3737 100644
> > --- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
> > @@ -2878,6 +2878,78 @@ mmss_noc: interconnect@...0000 {
> >  			#interconnect-cells = <2>;
> >  		};
> >
> > +		ufs_mem_hc: ufs@...4000 {
> > +			compatible = "qcom,x1e80100-ufshc", "qcom,ufshc",
> > +				     "jedec,ufs-2.0";
> > +			reg = <0 0x01d84000 0 0x3000>;
> > +			interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>;
> > +			phys = <&ufs_mem_phy>;
> > +			phy-names = "ufsphy";
> > +			lanes-per-direction = <1>;
> > +			#reset-cells = <1>;
> > +			resets = <&gcc GCC_UFS_PHY_BCR>;
> > +			reset-names = "rst";
> > +
> > +			power-domains = <&gcc GCC_UFS_PHY_GDSC>;
> > +
> > +			iommus = <&apps_smmu 0xa0 0x0>;
> 
> Looks like this should be 0x1a0 maybe
> > +
> > +			clock-names = "core_clk",
> > +				      "bus_aggr_clk",
> > +				      "iface_clk",
> > +				      "core_clk_unipro",
> > +				      "ref_clk",
> > +				      "tx_lane0_sync_clk",
> > +				      "rx_lane0_sync_clk";
> > +			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>;
> 
> You also want
> 
> <&gcc GCC_UFS_PHY_RX_SYMBOL_1_CLK>
> 
> > +			freq-table-hz = <50000000 200000000>,
> 25000000 300000000
> 
> > +					<0 0>,
> > +					<0 0>,
> > +					<37500000 150000000>,
> 75000000 300000000
> 
> > +					<0 0>,
> > +					<0 0>,
> > +					<0 0>;
> > +
> > +			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
> > +					 &config_noc SLAVE_UFS_MEM_CFG QCOM_ICC_TAG_ALWAYS>;
> > +			interconnect-names = "ufs-ddr", "cpu-ufs";
> > +
> > +			qcom,ice = <&ice>;
> > +
> > +			status = "disabled";
> > +		};
> > +
> > +		ufs_mem_phy: phy@...7000 {
> > +			compatible = "qcom,x1e80100-qmp-ufs-phy";
> > +			reg = <0 0x01d87000 0 0x1000>;
> 
> most definitely should be 0x01d80000 with a size of 0x2000
> 
> > +			clocks = <&rpmhcc RPMH_CXO_CLK>,
> > +				 <&gcc GCC_UFS_PHY_PHY_AUX_CLK>,
> > +				 <&tcsr TCSR_UFS_PHY_CLKREF_EN>;
> > +			clock-names = "ref",
> > +				      "ref_aux",
> > +				      "qref";
> > +			power-domains = <&gcc GCC_UFS_PHY_GDSC>;
> > +			resets = <&ufs_mem_hc 0>;
> > +			reset-names = "ufsphy";
> > +			#phy-cells = <0>;
> > +			status = "disabled";
> > +		};
> > +
> > +		ice: crypto@...0000 {
> > +			compatible = "qcom,x1e80100-inline-crypto-engine",
> > +				     "qcom,inline-crypto-engine";
> > +			reg = <0 0x01d90000 0 0x8000>;
> 
> 0x1d88000
> 
> 
> All this combined means you probably wrote your init sequence into some
> free(?) register space and the one left over from the bootloader was
> good enough :P
> 
> Konrad

I have not done anything special in our sub-system to boot this DTB.
Changing the values as suggested by you also doesn't make any difference
to me.

Anyway, I think I'll give up at this point, since this process is
getting too time consuming for me.  We'll go ahead with out downstream
patches, which works for us so far.

Cheers,
Marcus