linux-kernel - Re: [PATCH 4/4] arm64: dts: qcom: add sdm670 and pixel 3a device trees

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Date:   Wed, 2 Nov 2022 21:44:36 +0100
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Richard Acayan <mailingradian@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Vinod Koul <vkoul@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Chanho Park <chanho61.park@...sung.com>,
        Thierry Reding <treding@...dia.com>,
        Stephan Gerhold <stephan.gerhold@...nkonzept.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Robert Marko <robimarko@...il.com>,
        Das Srinagesh <quic_gurus@...cinc.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org
Subject: Re: [PATCH 4/4] arm64: dts: qcom: add sdm670 and pixel 3a device
 trees


On 02/11/2022 21:30, Krzysztof Kozlowski wrote:
> On 02/11/2022 16:26, Konrad Dybcio wrote:
>> On 02/11/2022 00:57, Richard Acayan wrote:
>>> The Qualcomm Snapdragon 670 has been out for a while. Add a device tree
>>> for it and the Google Pixel 3a as the first device.
>>>
>>> The Pixel 3a has the same bootloader issue as the Pixel 3 and will not work
>>> on Android 10 bootloaders or later until it gets fixed for the Pixel 3.
>>>
>>> SoC Initial Features:
>>>    - power management
>>>    - clocks
>>>    - pinctrl
>>>    - eMMC
>>>    - USB 2.0
>>>    - GENI I2C
>>>    - IOMMU
>>>    - RPMh
>>>    - interrupts
>>>
>>> Device-Specific Initial Features:
>>>    - side buttons (keys)
>>>    - regulators
>>>    - touchscreen
>>>
>>> Signed-off-by: Richard Acayan <mailingradian@...il.com>
>>> ---
>>>    arch/arm64/boot/dts/qcom/Makefile             |    1 +
>>>    .../boot/dts/qcom/sdm670-google-sargo.dts     |  519 +++++++
>>>    arch/arm64/boot/dts/qcom/sdm670.dtsi          | 1216 +++++++++++++++++
>>>    3 files changed, 1736 insertions(+)
>>>    create mode 100644 arch/arm64/boot/dts/qcom/sdm670-google-sargo.dts
>>>    create mode 100644 arch/arm64/boot/dts/qcom/sdm670.dtsi
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
>>> index b0558d3389e5..4eb5d8829efb 100644
>>> --- a/arch/arm64/boot/dts/qcom/Makefile
>>> +++ b/arch/arm64/boot/dts/qcom/Makefile
>>> @@ -124,6 +124,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sdm630-sony-xperia-nile-voyager.dtb
>>>    dtb-$(CONFIG_ARCH_QCOM)	+= sdm632-fairphone-fp3.dtb
>>>    dtb-$(CONFIG_ARCH_QCOM)	+= sdm636-sony-xperia-ganges-mermaid.dtb
>>>    dtb-$(CONFIG_ARCH_QCOM)	+= sdm660-xiaomi-lavender.dtb
>>> +dtb-$(CONFIG_ARCH_QCOM)	+= sdm670-google-sargo.dtb
>>>    dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-cheza-r1.dtb
>>>    dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-cheza-r2.dtb
>>>    dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-cheza-r3.dtb
>>> diff --git a/arch/arm64/boot/dts/qcom/sdm670-google-sargo.dts b/arch/arm64/boot/dts/qcom/sdm670-google-sargo.dts
>>> new file mode 100644
>>> index 000000000000..fa3dee78e442
>>> --- /dev/null
>>> +++ b/arch/arm64/boot/dts/qcom/sdm670-google-sargo.dts
>>> @@ -0,0 +1,519 @@
>>> +// SPDX-License-Identifier: GPL-2.0
>>> +/*
>>> + * Device tree for Google Pixel 3a, adapted from google-blueline device tree,
>>> + * xiaomi-lavender device tree, and oneplus-common device tree.
>>> + *
>>> + * Copyright (c) 2022, Richard Acayan. All rights reserved.
>>> + */
>>> +
>>> +/dts-v1/;
>>> +
>>> +#include <dt-bindings/gpio/gpio.h>
>>> +#include <dt-bindings/input/input.h>
>>> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
>>> +#include <dt-bindings/power/qcom-rpmpd.h>
>>> +#include "sdm670.dtsi"
>>> +#include "pm660.dtsi"
>>> +#include "pm660l.dtsi"
>>> +
>>> +/delete-node/ &mpss_region;
>>> +/delete-node/ &venus_mem;
>>> +/delete-node/ &wlan_msa_mem;
>>> +/delete-node/ &cdsp_mem;
>>> +/delete-node/ &mba_region;
>>> +/delete-node/ &adsp_mem;
>>> +/delete-node/ &ipa_fw_mem;
>>> +/delete-node/ &ipa_gsi_mem;
>>> +/delete-node/ &gpu_mem;
>>> +
>>> +/ {
>>> +	model = "Google Pixel 3a";
>>> +	compatible = "google,sargo", "qcom,sdm670";
>>> +	qcom,board-id = <0x00041e05 0>;
>>> +	qcom,msm-id = <321 0x20001>;
>>> +
>>> +	aliases { };
>>> +
>>> +	chosen {
>>> +		stdout-path = "serial0:115200n8";
>>> +
>>> +		#address-cells = <2>;
>>> +		#size-cells = <2>;
>>> +		ranges;
>>> +
>>> +		framebuffer@...00000 {
>>> +			compatible = "simple-framebuffer";
>>> +			reg = <0x0 0x9c000000 0x0 (1080 * 2220 * 4)>;
>>> +			width = <1080>;
>>> +			height = <2220>;
>>> +			stride = <(1080 * 4)>;
>>> +			format = "a8r8g8b8";
>>> +		};
>>> +	};
>>> +
>>> +	reserved-memory {
>>> +		#address-cells = <2>;
>>> +		#size-cells = <2>;
>>> +
>>> +		mpss_region: mpss@...00000 {
>> Please call the nodes memory@
> I think the actual recommendation is to use the purpose as name:
>
> https://lore.kernel.org/linux-arm-msm/CAL_Jsq+66j8Y5y+PQ+mezkaxN1pfHFKz524YUF4Lz_OU5E-mZQ@mail.gmail.com/
>
> https://devicetree-specification.readthedocs.io/en/latest/chapter3-devicenodes.html#reserved-memory-child-nodes
> (second paragraph)

Ok, my bad.


Konrad

>
>
> Best regards,
> Krzysztof
>