Message-ID: <e486c10b-025b-2c00-21b5-76029f9859d5@connolly.tech>
Date:   Sat, 06 Mar 2021 18:01:32 +0000
From:   Caleb Connolly <caleb@...nolly.tech>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: add support for the Pixel 2 XL

Hi Bjorn,

On 06/03/2021 3:37 am, Bjorn Andersson wrote:
> On Fri 05 Mar 15:35 CST 2021, Caleb Connolly wrote:
>
> Please add "qcom: " to $subject as well.
>
>> Add a minimal devicetree capable of booting on the Pixel 2 XL MSM8998
>> device.
>>
>> It's currently possible to boot the device into postmarketOS with USB
>> networking, however the display panel depends on Display Stream
>> Compression which is not yet supported in the kernel.
>>
>> The bootloader also requires that the dtbo partition contains a device
>> tree overlay with a particular id which has to be overlayed onto the
>> existing dtb. It's possible to use a specially crafted dtbo partition to
>> workaround this, more information is available here:
>>
>>      https://gitlab.com/calebccff/dtbo-google-wahoo-mainline
>>
> So it's not possible to just erase the dto, like on most other devices?

That's correct, I initially tried that but the bootloader just hung when 
I tried to boot anything.

It seems to require a DTO matching some revision-specific IDs, the 
bootloader is very unhappy when it can't

find them.

>
>> Signed-off-by: Caleb Connolly <caleb@...nolly.tech>
>> ---
>> It's possible to get wifi working by running Bjorns diag-router in the
>> background, without this the wifi firmware crashes every 10 seconds or
>> so. This is the same issue encountered on the OnePlus 5.
>>
>>   arch/arm64/boot/dts/qcom/Makefile             |   1 +
>>   .../boot/dts/qcom/msm8998-google-taimen.dts   |  14 +
>>   .../boot/dts/qcom/msm8998-google-wahoo.dtsi   | 391 ++++++++++++++++++
>>   3 files changed, 406 insertions(+)
>>   create mode 100644 arch/arm64/boot/dts/qcom/msm8998-google-taimen.dts
>>   create mode 100644 arch/arm64/boot/dts/qcom/msm8998-google-wahoo.dtsi
>>
>> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
>> index 5113fac80b7a..d942d3ec3928 100644
>> --- a/arch/arm64/boot/dts/qcom/Makefile
>> +++ b/arch/arm64/boot/dts/qcom/Makefile
>> @@ -16,6 +16,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8994-msft-lumia-cityman.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= msm8994-sony-xperia-kitakami-sumire.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= msm8996-mtp.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= msm8998-asus-novago-tp370ql.dtb
>> +dtb-$(CONFIG_ARCH_QCOM)	+= msm8998-google-taimen.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= msm8998-hp-envy-x2.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= msm8998-lenovo-miix-630.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= msm8998-mtp.dtb
>> diff --git a/arch/arm64/boot/dts/qcom/msm8998-google-taimen.dts b/arch/arm64/boot/dts/qcom/msm8998-google-taimen.dts
>> new file mode 100644
>> index 000000000000..ffaaafe14037
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/msm8998-google-taimen.dts
>> @@ -0,0 +1,14 @@
>> +// SPDX-License-Identifier: GPL-2.0-only
> Would you be willing to release these as BSD-3-Clause instead?
Yeah I'd be happy to, is this a new practice? As the device I submitted 
previously is also GPL-2.0.
>
>> +/*
>> + * Copyright (c) 2020, Caleb Connolly <caleb@...nolly.tech>
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "msm8998-google-wahoo.dtsi"
>> +
>> +/ {
>> +	model = "Google Pixel 2 XL";
>> +	compatible = "google,taimen", "google,wahoo", "qcom,msm8998", "qcom,msm8998-mtp";
>> +	qcom,msm-id = <0x124 0x20001>;
>> +};
>> diff --git a/arch/arm64/boot/dts/qcom/msm8998-google-wahoo.dtsi b/arch/arm64/boot/dts/qcom/msm8998-google-wahoo.dtsi
>> new file mode 100644
>> index 000000000000..0c221ead2df7
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/msm8998-google-wahoo.dtsi
>> @@ -0,0 +1,391 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/* Copyright (c) 2020 Caleb Connolly <caleb@...nolly.tech> */
>> +
>> +#include "msm8998.dtsi"
>> +#include "pm8998.dtsi"
>> +#include "pmi8998.dtsi"
>> +#include "pm8005.dtsi"
>> +
>> +/delete-node/ &mpss_mem;
>> +/delete-node/ &venus_mem;
>> +/delete-node/ &mba_mem;
>> +/delete-node/ &slpi_mem;
>> +
>> +/ {
>> +	aliases {
>> +	};
>> +
>> +	chosen {
>> +		#address-cells = <2>;
>> +		#size-cells = <2>;
>> +		ranges;
>> +
>> +		/* Add "earlycon" intended to be used in combination with UART serial console */
>> +		bootargs = "clk_ignore_unused earlycon console=ttyGS0,115200";// loglevel=10 drm.debug=15 debug";
> Please drop earlycon from this list (user should be able to add it if
> they care later?) and use stdout-path to set the console, like we do on
> other devices.
>
>> +	};
>> +
>> +	reserved-memory {
>> +		#address-cells = <2>;
>> + 		#size-cells = <2>;
>> + 		ranges;
>> +
>> +		mpss_mem: memory@...00000 {
>> +			reg = <0 0x8cc00000 0 0x7800000>;
>> +			no-map;
>> +		};
>> +
>> +		venus_mem: memory@...00000 {
>> +			reg = <0 0x94400000 0 0x500000>;
>> +			no-map;
>> +		};
>> +
>> +		mba_mem: memory@...00000 {
>> +			reg = <0 0x94900000 0 0x200000>;
>> +			no-map;
>> +		};
>> +
>> +		slpi_mem: memory@...00000 {
>> +			reg = <0 0x94b00000 0 0x700000>;
>> +			no-map;
>> +		};
>> +
>> +		ramoops: ramoops@...10000 {
>> +			compatible = "ramoops";
>> +			reg = <0 0xa1810000 0 0x200000>;
>> +			record-size = <0x20000>;
>> +			console-size = <0x100000>;
>> +			pmsg-size = <0x80000>;
>> +		};
>> +	};
>> +
>> +	vph_pwr: vph-pwr-regulator {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "vph_pwr";
>> +		regulator-always-on;
>> +		regulator-boot-on;
>> +	};
>> +};
>> +
>> +&blsp1_uart3 {
>> +	status = "disabled";
>> +
>> +	bluetooth {
>> +		compatible = "qcom,wcn3990-bt";
>> +
>> +		vddio-supply = <&vreg_s4a_1p8>;
>> +		vddxo-supply = <&vreg_l7a_1p8>;
>> +		vddrf-supply = <&vreg_l17a_1p3>;
>> +		vddch0-supply = <&vreg_l25a_3p3>;
>> +		max-speed = <3200000>;
>> +	};
>> +};
>> +
>> +&pcie0 {
>> +	status = "disabled";
> Isn't &pcie0 already disabled, from msm8998.dtsi?
>
>> +};
>> +
>> +&pm8005_lsid1 {
>> +	pm8005-regulators {
>> +		compatible = "qcom,pm8005-regulators";
>> +
>> +		vdd_s1-supply = <&vph_pwr>;
>> +
>> +		pm8005_s1: s1 { /* VDD_GFX supply */
>> +			regulator-min-microvolt = <524000>;
>> +			regulator-max-microvolt = <1100000>;
>> +			regulator-enable-ramp-delay = <500>;
>> +
>> +			/* hack until we rig up the gpu consumer */
>> +			regulator-always-on;
>> +		};
>> +	};
>> +};
>> +
>> +&qusb2phy {
>> +	status = "okay";
>> +
>> +	vdda-pll-supply = <&vreg_l12a_1p8>;
>> +	vdda-phy-dpdm-supply = <&vreg_l24a_3p075>;
>> +};
>> +
>> +&remoteproc_adsp {
>> +	status = "okay";
>> +
>> +	firmware-name = "qcom/pixel2/adsp.mdt";
>> +};
>> +
>> +&remoteproc_mss {
>> +	firmware-name = "qcom/pixel2/mba.mbn",
>> +	                "qcom/pixel2/modem.mdt";
>> +};
>> +
>> +&remoteproc_slpi {
>> +	status = "okay";
>> +
>> +	firmware-name = "qcom/pixel2/slpi_v2.mdt";
>> +};
>> +
>> +&rpm_requests {
>> +	pm8998-regulators {
>> +		compatible = "qcom,rpm-pm8998-regulators";
>> +
>> +		vdd_s1-supply = <&vph_pwr>;
>> +		vdd_s2-supply = <&vph_pwr>;
>> +		vdd_s3-supply = <&vph_pwr>;
>> +		vdd_s4-supply = <&vph_pwr>;
>> +		vdd_s5-supply = <&vph_pwr>;
>> +		vdd_s6-supply = <&vph_pwr>;
>> +		vdd_s7-supply = <&vph_pwr>;
>> +		vdd_s8-supply = <&vph_pwr>;
>> +		vdd_s9-supply = <&vph_pwr>;
>> +		vdd_s10-supply = <&vph_pwr>;
>> +		vdd_s11-supply = <&vph_pwr>;
>> +		vdd_s12-supply = <&vph_pwr>;
>> +		vdd_s13-supply = <&vph_pwr>;
>> +		vdd_l1_l27-supply = <&vreg_s7a_1p025>;
>> +		vdd_l2_l8_l17-supply = <&vreg_s3a_1p35>;
>> +		vdd_l3_l11-supply = <&vreg_s7a_1p025>;
>> +		vdd_l4_l5-supply = <&vreg_s7a_1p025>;
>> +		vdd_l6-supply = <&vreg_s5a_2p04>;
>> +		vdd_l7_l12_l14_l15-supply = <&vreg_s5a_2p04>;
>> +		vdd_l9-supply = <&vreg_bob>;
>> +		vdd_l10_l23_l25-supply = <&vreg_bob>;
>> +		vdd_l13_l19_l21-supply = <&vreg_bob>;
>> +		vdd_l16_l28-supply = <&vreg_bob>;
>> +		vdd_l18_l22-supply = <&vreg_bob>;
>> +		vdd_l20_l24-supply = <&vreg_bob>;
>> +		vdd_l26-supply = <&vreg_s3a_1p35>;
>> +		vdd_lvs1_lvs2-supply = <&vreg_s4a_1p8>;
>> +
>> +		vreg_s3a_1p35: s3 {
>> +			regulator-min-microvolt = <1352000>;
>> +			regulator-max-microvolt = <1352000>;
>> +		};
>> +		vreg_s4a_1p8: s4 {
>> +			regulator-min-microvolt = <1800000>;
>> +			regulator-max-microvolt = <1800000>;
>> +			regulator-allow-set-load;
>> +		};
>> +		vreg_s5a_2p04: s5 {
>> +			regulator-min-microvolt = <1904000>;
>> +			regulator-max-microvolt = <2040000>;
>> +		};
>> +		vreg_s7a_1p025: s7 {
>> +			regulator-min-microvolt = <900000>;
>> +			regulator-max-microvolt = <1028000>;
>> +		};
>> +		vreg_l1a_0p875: l1 {
>> +			regulator-min-microvolt = <880000>;
>> +			regulator-max-microvolt = <880000>;
>> +		};
>> +		vreg_l2a_1p2: l2 {
>> +			regulator-min-microvolt = <1200000>;
>> +			regulator-max-microvolt = <1200000>;
>> +		};
>> +		vreg_l3a_1p0: l3 {
>> +			regulator-min-microvolt = <1000000>;
>> +			regulator-max-microvolt = <1000000>;
>> +		};
>> +		vreg_l5a_0p8: l5 {
>> +			regulator-min-microvolt = <800000>;
>> +			regulator-max-microvolt = <800000>;
>> +		};
>> +		vreg_l6a_1p8: l6 {
>> +			regulator-min-microvolt = <1808000>;
>> +			regulator-max-microvolt = <1808000>;
>> +		};
>> +		vreg_l7a_1p8: l7 {
>> +			regulator-min-microvolt = <1800000>;
>> +			regulator-max-microvolt = <1800000>;
>> +		};
>> +		vreg_l8a_1p2: l8 {
>> +			regulator-min-microvolt = <1200000>;
>> +			regulator-max-microvolt = <1200000>;
>> +		};
>> +		vreg_l9a_1p8: l9 {
>> +			regulator-min-microvolt = <1808000>;
>> +			regulator-max-microvolt = <2960000>;
>> +		};
>> +		vreg_l10a_1p8: l10 {
>> +			regulator-min-microvolt = <1808000>;
>> +			regulator-max-microvolt = <2960000>;
>> +		};
>> +		vreg_l11a_1p0: l11 {
>> +			regulator-min-microvolt = <1000000>;
>> +			regulator-max-microvolt = <1000000>;
>> +		};
>> +		vreg_l12a_1p8: l12 {
>> +			regulator-min-microvolt = <1800000>;
>> +			regulator-max-microvolt = <1800000>;
>> +		};
>> +		vreg_l13a_2p95: l13 {
>> +			regulator-min-microvolt = <1808000>;
>> +			regulator-max-microvolt = <2960000>;
>> +		};
>> +		vreg_l14a_1p88: l14 {
>> +			regulator-min-microvolt = <1880000>;
>> +			regulator-max-microvolt = <1880000>;
>> +		};
>> +		vreg_15a_1p8: l15 {
>> +			regulator-min-microvolt = <1800000>;
>> +			regulator-max-microvolt = <1800000>;
>> +		};
>> +		vreg_l16a_2p7: l16 {
>> +			regulator-min-microvolt = <2704000>;
>> +			regulator-max-microvolt = <2704000>;
>> +		};
>> +		vreg_l17a_1p3: l17 {
>> +			regulator-min-microvolt = <1304000>;
>> +			regulator-max-microvolt = <1304000>;
>> +		};
>> +		vreg_l18a_2p7: l18 {
>> +			regulator-min-microvolt = <2704000>;
>> +			regulator-max-microvolt = <2704000>;
>> +		};
>> +		vreg_l19a_3p0: l19 {
>> +			regulator-min-microvolt = <3008000>;
>> +			regulator-max-microvolt = <3008000>;
>> +		};
>> +		vreg_l20a_2p95: l20 {
>> +			regulator-min-microvolt = <2960000>;
>> +			regulator-max-microvolt = <2960000>;
>> +			regulator-allow-set-load;
>> +		};
>> +		vreg_l21a_2p95: l21 {
>> +			regulator-min-microvolt = <2960000>;
>> +			regulator-max-microvolt = <2960000>;
>> +			regulator-allow-set-load;
>> +			regulator-system-load = <800000>;
>> +		};
>> +		vreg_l22a_2p85: l22 {
>> +			regulator-min-microvolt = <2864000>;
>> +			regulator-max-microvolt = <2864000>;
>> +		};
>> +		vreg_l23a_3p3: l23 {
>> +			regulator-min-microvolt = <3312000>;
>> +			regulator-max-microvolt = <3312000>;
>> +		};
>> +		vreg_l24a_3p075: l24 {
>> +			regulator-min-microvolt = <3088000>;
>> +			regulator-max-microvolt = <3088000>;
>> +		};
>> +		vreg_l25a_3p3: l25 {
>> +			regulator-min-microvolt = <3104000>;
>> +			regulator-max-microvolt = <3312000>;
>> +		};
>> +		vreg_l26a_1p2: l26 {
>> +			regulator-min-microvolt = <1200000>;
>> +			regulator-max-microvolt = <1200000>;
>> +			regulator-allow-set-load;
>> +		};
>> +		vreg_l28_3p0: l28 {
>> +			regulator-min-microvolt = <3008000>;
>> +			regulator-max-microvolt = <3008000>;
>> +		};
>> +
>> +		vreg_lvs1a_1p8: lvs1 {
>> +			regulator-min-microvolt = <1800000>;
>> +			regulator-max-microvolt = <1800000>;
>> +		};
>> +
>> +		vreg_lvs2a_1p8: lvs2 {
>> +			regulator-min-microvolt = <1800000>;
>> +			regulator-max-microvolt = <1800000>;
>> +		};
>> +
>> +	};
>> +
>> +	pmi8998-regulators {
>> +		compatible = "qcom,rpm-pmi8998-regulators";
>> +
>> +		vdd_bob-supply = <&vph_pwr>;
>> +
>> +		vreg_bob: bob {
>> +			regulator-min-microvolt = <3312000>;
>> +			regulator-max-microvolt = <3600000>;
>> +		};
>> +	};
>> +};
>> +
>> +&spmi_bus {
>> +	pmic@0 {
>> +		compatible = "qcom,pm8994", "qcom,spmi-pmic";
> qcom,pm8994?
>
> Per the include of pm8998.dtsi I think you already have pmic@0 defined,
> with compatible of qcom,pm8998 here (which you override).
>
>> +		reg = <0x0 SPMI_USID>;
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +		pon@800 {
> But pmic@0 already has pon@800 defined as &pm8998_pon, which seems to be
> defined identically to yours.
>
> So I think you should be able to drop this entire &spmi_bus node and its
> children, but perhaps I'm just missing something obvious here?
>
>> +			compatible = "qcom,pm8916-pon";
>> +
>> +			reg = <0x800>;
>> +			mode-bootloader = <0x2>;
>> +			mode-recovery = <0x1>;
>> +
>> +			pwrkey {
>> +				compatible = "qcom,pm8941-pwrkey";
>> +				interrupts = <0x0 0x8 0 IRQ_TYPE_EDGE_BOTH>;
>> +				debounce = <15625>;
>> +				bias-pull-up;
>> +				linux,code = <KEY_POWER>;
>> +			};
>> +		};
>> +	};
>> +};
>> +
>> +&tlmm {
>> +	gpio-reserved-ranges = <0 4>, <81 4>;
>> +};
>> +
>> +/*
>> + * The device does contain a USB3 capable type-c port,
>> + * however it doesn't seem to work when superspeed mode is
>> + * enabled.
>> + */
>> +&usb3 {
>> +	status = "okay";
>> +
>> +	/* Operate "GCC_USB30_MASTER_CLK" in HS mode (>=60 MHz) */
>> +	assigned-clock-rates = <19200000>, <60000000>;
>> +
>> +	/* Disable USB3 pipe_clk requirement */
>> +	qcom,select-utmi-as-pipe-clk;
>> +};
>> +
>> +&usb3_dwc3 {
>> +	/* Drop USB 3 SuperSpeed PHY to bring up the "usb0" interface */
>> +	phys = <&qusb2phy>;
>> +	phy-names = "usb2-phy";
>> +
>> +	/* We can only operate at USB 2.0 speeds */
>> +	maximum-speed = "high-speed";
>> +
>> +	/* Force to peripheral until we have Type-C hooked up */
>> +	dr_mode = "peripheral";
>> +};
>> +
>> +&ufshc {
>> +	vcc-supply = <&vreg_l20a_2p95>;
>> +	vccq-supply = <&vreg_l26a_1p2>;
>> +	vccq2-supply = <&vreg_s4a_1p8>;
>> +	vcc-max-microamp = <750000>;
>> +	vccq-max-microamp = <560000>;
>> +	vccq2-max-microamp = <750000>;
>> +};
>> +
>> +&ufsphy {
>> +	vdda-phy-supply = <&vreg_l1a_0p875>;
>> +	vdda-pll-supply = <&vreg_l2a_1p2>;
>> +	vddp-ref-clk-supply = <&vreg_l26a_1p2>;
>> +	vdda-phy-max-microamp = <51400>;
>> +	vdda-pll-max-microamp = <14600>;
>> +	vddp-ref-clk-max-microamp = <100>;
>> +	vddp-ref-clk-always-on;
>> +};
>> +
>> +&wifi {
>> +	status = "okay";
>> +
Thanks.
> Can you please disable diag-router and try adding this here instead:
>
> 	clocks = <&rpmcc RPM_SMD_RF_CLK2_PIN>, <&rpmcc RPM_SMD_QDSS_CLK>;
> 	clock-names = "cxo_ref_clk_pin", "qdss";
>
> What you describe in your comment above seems like what I saw on sm8150,
> that launching diag-router would cause something on the modem side to
> keep the debug subsystem clock on - which in turn caused WiFi not to
> crash during loading.

This unfortunately didn't prevent the following crash:

[   15.553831] qcom-q6v5-mss 4080000.remoteproc: fatal error received: 
err_qdi.c:450:[]:EF:wlan_process:1:halphy_caldb.c:2822:Assertion 0 failed

Incidentally, I've been trying to bring up an SM8150 device and am 
encountering wlan firmware crashes even with diag-router, adding the 
above clocks there doesn't help either on my device:

[   44.367766] qcom_q6v5_pas 4080000.remoteproc: fatal error received: 
err_qdi.c:1024:EX:wlan_process:0x1:WLAN RT:0x1076:PC=0xb0008e20

Thanks for the review.

Regards,

Caleb

>
>
> I don't know why this was required, or if it's just working around
> some other issue we're having.
>
> Regards,
> Bjorn
>
>> +	vdd-0.8-cx-mx-supply = <&vreg_l5a_0p8>;
>> +	vdd-1.8-xo-supply = <&vreg_l7a_1p8>;
>> +	vdd-1.3-rfa-supply = <&vreg_l17a_1p3>;
>> +	vdd-3.3-ch0-supply = <&vreg_l25a_3p3>;
>> +};
>> --
>> 2.29.2
>>
>>

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