July 2019 - Aarch64-laptops - lists.linaro.org

[PATCH 0/4] drm+dt+efi: support devices with multiple possible panels

by Rob Clark

From: Rob Clark <robdclark(a)chromium.org> Now that we can deal gracefully with bootloader (firmware) initialized display on aarch64 laptops[1], the next step is to deal with the fact that the same model of laptop can have one of multiple different panels. (For the yoga c630 that I have, I know of at least two possible panels, there might be a third.) This is actually a scenario that comes up frequently in phones and tablets as well, so it is useful to have an upstream solution for this. The basic idea is to add a 'panel-id' property in dt chosen node, and use that to pick the endpoint we look at when loading the panel driver, e.g. / { chosen { panel-id = <0xc4>; }; ivo_panel { compatible = "ivo,m133nwf4-r0"; power-supply = <&vlcm_3v3>; no-hpd; ports { port { ivo_panel_in_edp: endpoint { remote-endpoint = <&sn65dsi86_out_ivo>; }; }; }; }; boe_panel { compatible = "boe,nv133fhm-n61"; power-supply = <&vlcm_3v3>; no-hpd; ports { port { boe_panel_in_edp: endpoint { remote-endpoint = <&sn65dsi86_out_boe>; }; }; }; }; sn65dsi86: bridge@2c { compatible = "ti,sn65dsi86"; ... ports { #address-cells = <1>; #size-cells = <0>; ... port@1 { #address-cells = <1>; #size-cells = <0>; reg = <1>; endpoint@c4 { reg = <0xc4>; remote-endpoint = <&boe_panel_in_edp>; }; endpoint@c5 { reg = <0xc5>; remote-endpoint = <&ivo_panel_in_edp>; }; }; }; } }; Note that the panel-id is potentially a sparse-int. The values I've seen so far on aarch64 laptops are: * 0xc2 * 0xc3 * 0xc4 * 0xc5 * 0x8011 * 0x8012 * 0x8055 * 0x8056 At least on snapdragon aarch64 laptops, they can be any u32 value. However, on these laptops, the bootloader/firmware is not populating the chosen node, but instead providing an "UEFIDisplayInfo" variable, which contains the panel id. Unfortunately EFI variables are only available before ExitBootServices, so the second patch checks for this variable before EBS and populates the /chosen/panel-id variable. [1] https://patchwork.freedesktop.org/series/63001/ Rob Clark (4): dt-bindings: chosen: document panel-id binding efi/libstub: detect panel-id drm: add helper to lookup panel-id drm/bridge: ti-sn65dsi86: use helper to lookup panel-id Documentation/devicetree/bindings/chosen.txt | 69 ++++++++++++++++++++ drivers/firmware/efi/libstub/arm-stub.c | 49 ++++++++++++++ drivers/firmware/efi/libstub/efistub.h | 2 + drivers/firmware/efi/libstub/fdt.c | 9 +++ drivers/gpu/drm/bridge/ti-sn65dsi86.c | 5 +- drivers/gpu/drm/drm_of.c | 21 ++++++ include/drm/drm_of.h | 7 ++ 7 files changed, 160 insertions(+), 2 deletions(-) -- 2.20.1

4 years, 7 months

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[EOAN][UNSTABLE][PATCH] UBUNTU: SAUCE: arm64: dts: qcom: Add support for AArch64 laptops

by Dimitri John Ledkov

From: AArch64 Laptops <aarch64laptops(a)gmail.com> This is squashed merged of multiple patches from https://github.com/aarch64-laptops/linux/tree/laptops-ubuntu Note that some of these, with different names are getting upstreamed targetted for v5.4. Once those are all merged and available, this patch will become obsolete and will be dropped. This enables booting using flash-kernel in eoan on Lenovo Mixx 630 & Yoga C630, Asus TP370QL, HP Envy x2. Squashed commit messages below: arm64: dts: qcom: Add support for MSM8668 based laptops 3 files are being introduced to describe the differences between the newly released Snapdragon 835 (MSM8668) based AArch64 Laptops. There are 3 currently available: * ASUS NovaGo TP370QL * HP Envy x2ta * Lenovo Miix 630 The later two (HP and Lenovo) are very similar and are as yet able to share the same Device Tree Binaries. Once any difference arise, a new file 'laptop-lenovo-miix-360.dts' will have to be drafted. These files ensure the following work on each of the devices: * Touchpad * Keyboard * SDCHI SD card reader (card detect) arm64: config: laptops: Enable the RPM PM8998 regulators arm64: dts: qcom: Pull up trackpad IRQ on the Asus Stops IRQ storm and renders trackpad functional instead of laggy. arm64: dts: qcom: Provide Lenovo Mixx 630 with its own DTB arm64: dts: qcom: Add Lenovo Yoga C630 The Lenovo Yoga C630 is built on the SDM850 from Qualcomm, but this seem to be similar enough to the SDM845 that we can reuse the sdm845.dtsi. Supported by this patch is: keyboard, battery monitoring, UFS storage, USB host and Bluetooth. arm64: dts: qcom: Move HID device at 0x2C to its rightful place According to the ACPI tables the HID device at I2C address 0x2C should be located under the I2C Controller with address 0x88C000, presented as I2C3 in DT and I2C4 in ACPI. Signed-off-by: Lee Jones <lee.jones(a)linaro.org> Signed-off-by: Dimitri John Ledkov <xnox(a)ubuntu.com> --- arch/arm64/boot/dts/qcom/Makefile | 5 + .../boot/dts/qcom/laptop-asus-tp370ql.dts | 49 ++ arch/arm64/boot/dts/qcom/laptop-common.dtsi | 26 + .../arm64/boot/dts/qcom/laptop-hp-envy-x2.dts | 29 ++ .../boot/dts/qcom/laptop-lenovo-mixx-630.dts | 29 ++ .../boot/dts/qcom/laptop-lenovo-yoga-c630.dts | 11 + .../boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 455 ++++++++++++++++++ drivers/regulator/qcom-rpmh-regulator.c | 2 +- 8 files changed, 605 insertions(+), 1 deletion(-) create mode 100644 arch/arm64/boot/dts/qcom/laptop-asus-tp370ql.dts create mode 100644 arch/arm64/boot/dts/qcom/laptop-common.dtsi create mode 100644 arch/arm64/boot/dts/qcom/laptop-hp-envy-x2.dts create mode 100644 arch/arm64/boot/dts/qcom/laptop-lenovo-mixx-630.dts create mode 100644 arch/arm64/boot/dts/qcom/laptop-lenovo-yoga-c630.dts create mode 100644 arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile index 0a7e5dfce6f7..03452c893c94 100644 --- a/arch/arm64/boot/dts/qcom/Makefile +++ b/arch/arm64/boot/dts/qcom/Makefile @@ -2,6 +2,10 @@ dtb-$(CONFIG_ARCH_QCOM) += apq8016-sbc.dtb dtb-$(CONFIG_ARCH_QCOM) += apq8096-db820c.dtb dtb-$(CONFIG_ARCH_QCOM) += ipq8074-hk01.dtb +dtb-$(CONFIG_ARCH_QCOM) += laptop-asus-tp370ql.dtb +dtb-$(CONFIG_ARCH_QCOM) += laptop-hp-envy-x2.dtb +dtb-$(CONFIG_ARCH_QCOM) += laptop-lenovo-mixx-630.dtb +dtb-$(CONFIG_ARCH_QCOM) += laptop-lenovo-yoga-c630.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8916-mtp.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8992-bullhead-rev-101.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8994-angler-rev-101.dtb @@ -14,3 +18,4 @@ dtb-$(CONFIG_ARCH_QCOM) += sdm845-db845c.dtb dtb-$(CONFIG_ARCH_QCOM) += sdm845-mtp.dtb dtb-$(CONFIG_ARCH_QCOM) += qcs404-evb-1000.dtb dtb-$(CONFIG_ARCH_QCOM) += qcs404-evb-4000.dtb +dtb-$(CONFIG_ARCH_QCOM) += sdm850-lenovo-yoga-c630.dtb diff --git a/arch/arm64/boot/dts/qcom/laptop-asus-tp370ql.dts b/arch/arm64/boot/dts/qcom/laptop-asus-tp370ql.dts new file mode 100644 index 000000000000..72b59783c964 --- /dev/null +++ b/arch/arm64/boot/dts/qcom/laptop-asus-tp370ql.dts @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019, The Linux Foundation. All rights reserved. */ + +/dts-v1/; + +#include "laptop-common.dtsi" + +/ { + model = "Qualcomm Technologies, Inc. MSM8998 v1 Asus TP370QL"; + compatible = "qcom,msm8998-asus-tp370ql"; + + qcom,board-id = <8 0>; +}; + +&tlmm { + touchpad: touchpad { + config { + pins = "gpio123"; + bias-pull-up; /* pull up */ + }; + }; +}; + +&sdhc2 { + cd-gpios = <&tlmm 95 GPIO_ACTIVE_HIGH>; +}; + +&blsp1_i2c6 { + status = "okay"; + + keyboard@3a { + compatible = "hid-over-i2c"; + interrupt-parent = <&tlmm>; + interrupts = <0x25 IRQ_TYPE_LEVEL_LOW>; + reg = <0x3a>; + hid-descr-addr = <0x0001>; + }; + + touchpad@15 { + compatible = "hid-over-i2c"; + interrupt-parent = <&tlmm>; + interrupts = <0x7b IRQ_TYPE_LEVEL_LOW>; + reg = <0x15>; + hid-descr-addr = <0x0001>; + + pinctrl-names = "default"; + pinctrl-0 = <&touchpad>; + }; +}; diff --git a/arch/arm64/boot/dts/qcom/laptop-common.dtsi b/arch/arm64/boot/dts/qcom/laptop-common.dtsi new file mode 100644 index 000000000000..184b33ad8694 --- /dev/null +++ b/arch/arm64/boot/dts/qcom/laptop-common.dtsi @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019, The Linux Foundation. All rights reserved. */ + +/dts-v1/; + +#include "msm8998-mtp.dtsi" + +&rpm_requests { + pm8998-regulators { + compatible = "qcom,rpm-pm8998-regulators"; + + status = "okay"; + + vdd_l9-supply = <&vph_pwr>; + vdd_l10_l23_l25-supply = <&vph_pwr>; + vdd_l13_l19_l21-supply = <&vph_pwr>; + vdd_l16_l28-supply = <&vph_pwr>; + vdd_l18_l22-supply = <&vph_pwr>; + vdd_l20_l24-supply = <&vph_pwr>; + }; + + pmi8998-regulators { + compatible = "qcom,rpm-pmi8998-regulators"; + status = "disabled"; + }; +}; diff --git a/arch/arm64/boot/dts/qcom/laptop-hp-envy-x2.dts b/arch/arm64/boot/dts/qcom/laptop-hp-envy-x2.dts new file mode 100644 index 000000000000..4727e12c7dbf --- /dev/null +++ b/arch/arm64/boot/dts/qcom/laptop-hp-envy-x2.dts @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019, The Linux Foundation. All rights reserved. */ + +/dts-v1/; + +#include "laptop-common.dtsi" + +/ { + model = "Qualcomm Technologies, Inc. MSM8998 v1 HP Envy X2"; + compatible = "qcom,msm8998-hp-envy-x2"; + + qcom,board-id = <8 0>; +}; + +&sdhc2 { + cd-gpios = <&tlmm 95 GPIO_ACTIVE_LOW>; +}; + +&blsp1_i2c6 { + status = "okay"; + + keyboard@3a { + compatible = "hid-over-i2c"; + interrupt-parent = <&tlmm>; + interrupts = <0x79 IRQ_TYPE_LEVEL_LOW>; + reg = <0x3a>; + hid-descr-addr = <0x0001>; + }; +}; diff --git a/arch/arm64/boot/dts/qcom/laptop-lenovo-mixx-630.dts b/arch/arm64/boot/dts/qcom/laptop-lenovo-mixx-630.dts new file mode 100644 index 000000000000..8b03cb7176ce --- /dev/null +++ b/arch/arm64/boot/dts/qcom/laptop-lenovo-mixx-630.dts @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019, The Linux Foundation. All rights reserved. */ + +/dts-v1/; + +#include "laptop-common.dtsi" + +/ { + model = "Qualcomm Technologies, Inc. MSM8998 v1 Levovo Mixx 630"; + compatible = "qcom,msm8998-lenovo-mixx-630"; + + qcom,board-id = <8 0>; +}; + +&sdhc2 { + cd-gpios = <&tlmm 95 GPIO_ACTIVE_HIGH>; +}; + +&blsp1_i2c6 { + status = "okay"; + + keyboard@3a { + compatible = "hid-over-i2c"; + interrupt-parent = <&tlmm>; + interrupts = <0x79 IRQ_TYPE_LEVEL_LOW>; + reg = <0x3a>; + hid-descr-addr = <0x0001>; + }; +}; diff --git a/arch/arm64/boot/dts/qcom/laptop-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/laptop-lenovo-yoga-c630.dts new file mode 100644 index 000000000000..e75bff57cc0e --- /dev/null +++ b/arch/arm64/boot/dts/qcom/laptop-lenovo-yoga-c630.dts @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019, The Linux Foundation. All rights reserved. */ + +/dts-v1/; + +#include "sdm850-lenovo-yoga-c630.dts" + +/ { + model = "Lenovo Yoga C630"; + compatible = "lenovo,yoga-c630", "qcom,sdm845"; +}; diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts new file mode 100644 index 000000000000..0d9aab66ecb4 --- /dev/null +++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts @@ -0,0 +1,455 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Lenovo Yoga C630 + * + * Copyright (c) 2019, Linaro Ltd. + */ + +/dts-v1/; + +#include <dt-bindings/regulator/qcom,rpmh-regulator.h> +#include "sdm845.dtsi" +#include "pm8998.dtsi" + +/ { + model = "Lenovo Yoga C630"; + compatible = "lenovo,yoga-c630", "qcom,sdm845"; + + aliases { + hsuart0 = &uart6; + }; +}; + +&apps_rsc { + pm8998-rpmh-regulators { + compatible = "qcom,pm8998-rpmh-regulators"; + qcom,pmic-id = "a"; + + vdd-l2-l8-l17-supply = <&vreg_s3a_1p35>; + vdd-l7-l12-l14-l15-supply = <&vreg_s5a_2p04>; + + vreg_s2a_1p125: smps2 { + }; + + vreg_s3a_1p35: smps3 { + regulator-min-microvolt = <1352000>; + regulator-max-microvolt = <1352000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_s4a_1p8: smps4 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_s5a_2p04: smps5 { + regulator-min-microvolt = <2040000>; + regulator-max-microvolt = <2040000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_s7a_1p025: smps7 { + }; + + vdd_qusb_hs0: + vdda_hp_pcie_core: + vdda_mipi_csi0_0p9: + vdda_mipi_csi1_0p9: + vdda_mipi_csi2_0p9: + vdda_mipi_dsi0_pll: + vdda_mipi_dsi1_pll: + vdda_qlink_lv: + vdda_qlink_lv_ck: + vdda_qrefs_0p875: + vdda_pcie_core: + vdda_pll_cc_ebi01: + vdda_pll_cc_ebi23: + vdda_sp_sensor: + vdda_ufs1_core: + vdda_ufs2_core: + vdda_usb1_ss_core: + vdda_usb2_ss_core: + vreg_l1a_0p875: ldo1 { + regulator-min-microvolt = <880000>; + regulator-max-microvolt = <880000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vddpx_10: + vreg_l2a_1p2: ldo2 { + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + regulator-always-on; + }; + + vreg_l3a_1p0: ldo3 { + }; + + vdd_wcss_cx: + vdd_wcss_mx: + vdda_wcss_pll: + vreg_l5a_0p8: ldo5 { + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <800000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vddpx_13: + vreg_l6a_1p8: ldo6 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_l7a_1p8: ldo7 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_l8a_1p2: ldo8 { + }; + + vreg_l9a_1p8: ldo9 { + }; + + vreg_l10a_1p8: ldo10 { + }; + + vreg_l11a_1p0: ldo11 { + }; + + vdd_qfprom: + vdd_qfprom_sp: + vdda_apc1_cs_1p8: + vdda_gfx_cs_1p8: + vdda_qrefs_1p8: + vdda_qusb_hs0_1p8: + vddpx_11: + vreg_l12a_1p8: ldo12 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vddpx_2: + vreg_l13a_2p95: ldo13 { + }; + + vreg_l14a_1p88: ldo14 { + regulator-min-microvolt = <1880000>; + regulator-max-microvolt = <1880000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_l15a_1p8: ldo15 { + }; + + vreg_l16a_2p7: ldo16 { + }; + + vreg_l17a_1p3: ldo17 { + regulator-min-microvolt = <1304000>; + regulator-max-microvolt = <1304000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_l18a_2p7: ldo18 { + }; + + vreg_l19a_3p0: ldo19 { + regulator-min-microvolt = <3100000>; + regulator-max-microvolt = <3108000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_l20a_2p95: ldo20 { + regulator-min-microvolt = <2960000>; + regulator-max-microvolt = <2960000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_l21a_2p95: ldo21 { + }; + + vreg_l22a_2p85: ldo22 { + }; + + vreg_l23a_3p3: ldo23 { + }; + + vdda_qusb_hs0_3p1: + vreg_l24a_3p075: ldo24 { + regulator-min-microvolt = <3075000>; + regulator-max-microvolt = <3083000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_l25a_3p3: ldo25 { + regulator-min-microvolt = <3104000>; + regulator-max-microvolt = <3112000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vdda_hp_pcie_1p2: + vdda_hv_ebi0: + vdda_hv_ebi1: + vdda_hv_ebi2: + vdda_hv_ebi3: + vdda_mipi_csi_1p25: + vdda_mipi_dsi0_1p2: + vdda_mipi_dsi1_1p2: + vdda_pcie_1p2: + vdda_ufs1_1p2: + vdda_ufs2_1p2: + vdda_usb1_ss_1p2: + vdda_usb2_ss_1p2: + vreg_l26a_1p2: ldo26 { + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1208000>; + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>; + }; + + vreg_l28a_3p0: ldo28 { + }; + + vreg_lvs1a_1p8: lvs1 { + }; + + vreg_lvs2a_1p8: lvs2 { + }; + }; +}; + +&apps_smmu { + /* TODO: Figure out how to survive booting with this enabled */ + status = "disabled"; +}; + +&gcc { + protected-clocks = <GCC_QSPI_CORE_CLK>, + <GCC_QSPI_CORE_CLK_SRC>, + <GCC_QSPI_CNOC_PERIPH_AHB_CLK>; +}; + +&i2c1 { + status = "okay"; + clock-frequency = <400000>; + + battery@70 { + compatible = "some,battery"; + reg = <0x70>; + }; +}; + +&i2c3 { + status = "okay"; + clock-frequency = <400000>; + + hid@15 { + compatible = "hid-over-i2c"; + reg = <0x15>; + hid-descr-addr = <0x1>; + + interrupts-extended = <&tlmm 37 IRQ_TYPE_EDGE_RISING>; + +// pinctrl-names = "default"; +// pinctrl-0 = <&i2c2_hid_active>; + }; + + hid@2c { + compatible = "hid-over-i2c"; + reg = <0x2c>; + hid-descr-addr = <0x20>; + + interrupts-extended = <&tlmm 37 IRQ_TYPE_EDGE_RISING>; + + pinctrl-names = "default"; + pinctrl-0 = <&i2c2_hid_active>; + }; +}; + +&i2c5 { + status = "okay"; + clock-frequency = <400000>; + + hid@10 { + compatible = "hid-over-i2c"; + reg = <0x10>; + hid-descr-addr = <0x1>; + + interrupts-extended = <&tlmm 125 IRQ_TYPE_EDGE_FALLING>; + + pinctrl-names = "default"; + pinctrl-0 = <&i2c6_hid_active>; + }; +}; + +&i2c11 { + status = "okay"; + clock-frequency = <400000>; + + hid@5c { + compatible = "hid-over-i2c"; + reg = <0x5c>; + hid-descr-addr = <0x1>; + + interrupts-extended = <&tlmm 92 IRQ_TYPE_LEVEL_LOW>; + + pinctrl-names = "default"; + pinctrl-0 = <&i2c12_hid_active>; + }; +}; + +&qupv3_id_0 { + status = "okay"; +}; + +&qupv3_id_1 { + status = "okay"; +}; + +&tlmm { + gpio-reserved-ranges = <0 4>, <81 4>; + + i2c2_hid_active: i2c2-hid-active { + pins = <37>; + function = "gpio"; + + input-enable; + bias-pull-up; + drive-strength = <2>; + }; + + i2c6_hid_active: i2c6-hid-active { + pins = <125>; + function = "gpio"; + + input-enable; + bias-pull-up; + drive-strength = <2>; + }; + + i2c12_hid_active: i2c12-hid-active { + pins = <92>; + function = "gpio"; + + input-enable; + bias-pull-up; + drive-strength = <2>; + }; +}; + +&uart6 { + status = "okay"; + + 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>; + }; +}; + +&ufs_mem_hc { + status = "okay"; + + vcc-supply = <&vreg_l20a_2p95>; + vcc-max-microamp = <600000>; +}; + +&ufs_mem_phy { + status = "okay"; + + vdda-phy-supply = <&vdda_ufs1_core>; + vdda-pll-supply = <&vdda_ufs1_1p2>; +}; + +&usb_1 { + status = "okay"; +}; + +&usb_1_dwc3 { + dr_mode = "host"; +}; + +&usb_1_hsphy { + status = "okay"; + + vdd-supply = <&vdda_usb1_ss_core>; + vdda-pll-supply = <&vdda_qusb_hs0_1p8>; + vdda-phy-dpdm-supply = <&vdda_qusb_hs0_3p1>; + + qcom,imp-res-offset-value = <8>; + qcom,hstx-trim-value = <QUSB2_V2_HSTX_TRIM_21_6_MA>; + qcom,preemphasis-level = <QUSB2_V2_PREEMPHASIS_5_PERCENT>; + qcom,preemphasis-width = <QUSB2_V2_PREEMPHASIS_WIDTH_HALF_BIT>; +}; + +&usb_1_qmpphy { + status = "okay"; + + vdda-phy-supply = <&vdda_usb1_ss_1p2>; + vdda-pll-supply = <&vdda_usb1_ss_core>; +}; + +&usb_2 { + status = "okay"; +}; + +&usb_2_dwc3 { + dr_mode = "host"; +}; + +&usb_2_hsphy { + status = "okay"; + + vdd-supply = <&vdda_usb2_ss_core>; + vdda-pll-supply = <&vdda_qusb_hs0_1p8>; + vdda-phy-dpdm-supply = <&vdda_qusb_hs0_3p1>; + + qcom,imp-res-offset-value = <8>; + qcom,hstx-trim-value = <QUSB2_V2_HSTX_TRIM_22_8_MA>; +}; + +&usb_2_qmpphy { + status = "okay"; + + vdda-phy-supply = <&vdda_usb2_ss_1p2>; + vdda-pll-supply = <&vdda_usb2_ss_core>; +}; + +/* PINCTRL - additions to nodes defined in sdm845.dtsi */ + +&qup_i2c12_default { + drive-strength = <2>; + bias-disable; +}; + +&qup_uart6_default { + pinmux { + pins = "gpio45", "gpio46", "gpio47", "gpio48"; + function = "qup6"; + }; + + cts { + pins = "gpio45"; + bias-pull-down; + }; + + rts-tx { + pins = "gpio46", "gpio47"; + drive-strength = <2>; + bias-disable; + }; + + rx { + pins = "gpio48"; + bias-pull-up; + }; +}; diff --git a/drivers/regulator/qcom-rpmh-regulator.c b/drivers/regulator/qcom-rpmh-regulator.c index b2c2d01d1637..aa0272497be4 100644 --- a/drivers/regulator/qcom-rpmh-regulator.c +++ b/drivers/regulator/qcom-rpmh-regulator.c @@ -207,7 +207,7 @@ static int rpmh_regulator_is_enabled(struct regulator_dev *rdev) { struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); - return vreg->enabled; + return vreg->enabled > 0; } static int rpmh_regulator_set_enable_state(struct regulator_dev *rdev, -- 2.20.1

4 years, 11 months

3
7
0 0

[EOAN][UNSTABLE][PATCH 0/3] UBUNTU: SAUCE: Enable WMI on arm64

by Dimitri John Ledkov

These are cherrypicks from the aarch64-laptops [1] effort. I have pinged those maintainers pointing out that these patches have not been submitted upstream. In the future it should be... Otherwise, I'll keep rebasing this. This is useful on the AArch64 laptops [2] booting in ACPI mode, as they are Win10 laptops they use/publish WMI, hence it should stop being x86 only and be enabled on arm64 too. [1] https://github.com/aarch64-laptops/linux/tree/laptops-ubuntu [2] ASUS NovaGo TP370QL, HP Envy x2, Lenovo Mixx 630 & Yoga C630, and Samsung Book2 Ard Biesheuvel (2): UBUNTU: SAUCE: acpi: move WMI subsystem to generic code UBUNTU: SAUCE: acpi/wmi: move BMOF driver to generic code Dimitri John Ledkov (1): UBUNTU: [Config] Update WMI_BMOF annotations. .../abi/5.3.0-0.1/arm64/generic.modules | 2 ++ debian.master/config/annotations | 4 +-- drivers/acpi/Kconfig | 33 +++++++++++++++++++ drivers/acpi/Makefile | 2 ++ drivers/{platform/x86 => acpi}/wmi-bmof.c | 0 drivers/{platform/x86 => acpi}/wmi.c | 0 drivers/platform/x86/Kconfig | 33 ------------------- drivers/platform/x86/Makefile | 2 -- 8 files changed, 39 insertions(+), 37 deletions(-) rename drivers/{platform/x86 => acpi}/wmi-bmof.c (100%) rename drivers/{platform/x86 => acpi}/wmi.c (100%) -- 2.20.1

4 years, 11 months

2
4
0 0

Galaxy Book 2 support

by Joshua Lee

Hello, this appears to be a development-only mailing list, so pardon me if I’m disturbing anyone. I’m running a Samsung Galaxy Book 2 (using SD850 + QUALCOMM x20 modem + AMOLED touch screen, detachable KB, and stylus) and am wondering if the work being done mostly on Lenovo SD850 laptops apparently and older devices will apply to this hardware, or should I not hold my breath? Don’t worry, this isn’t an ETA or a complaint, I appreciate everything you’re doing and wish I knew more about programming so I could help out. Sent from Mail for Windows 10

4 years, 12 months

2
1
0 0

blacklisting built-in and regular modules via cmdline instead of config

by Dimitri John Ledkov

So, we still have sensor-hub and acpi-button disabled using kernel config. I could patch the quirks into the kernel to skip loading those based on DMI data. However, that's a bit counter-productive as that's compiled in code and enumerates SKUs. Can I instead use kernel command line to skip initializing those built-in and compiled modules? Ie. would something like: module_blacklist=hid-sensor-hub initcall_blacklist=acpi_button_driver_init work, even when the kernel is configured with CONFIG_HID_SENSOR_HUB=m and CONFIG_ACPI_BUTTON=y ? Also not sure if I got the initcall function name right. I am asking because, it may be easier for me to control cmdline reliably, instead of distro kernel config. -- Regards, Dimitri.

5 years

1
0
0 0

[PATCH 0/2] iommu: handle drivers that manage iommu directly

by Rob Clark

From: Rob Clark <robdclark(a)chromium.org> One of the challenges we need to handle to enable the aarch64 laptops upstream is dealing with the fact that the bootloader enables the display and takes the corresponding SMMU context-bank out of BYPASS. Unfortunately, currently, the IOMMU framework attaches a DMA (or potentially an IDENTITY) domain before the driver is probed and has a chance to intervene and shutdown[1] scanout. Which makes things go horribly wrong. This also happens to solve a problem that is blocking us from supporting per-context pagetables on the GPU, due to domain that is attached before driver has a chance to attach it's own domain for the GPU. But since the driver is managing it's own iommu domains directly, and does not use dev->iommu_group->default_domain at all, the simple solution to both problems is to just avoid attaching that domain in the first place. [1] Eventually we want to be able to do a seemless transition from efifb to drm/msm... but first step is to get the core (iommu, clk, genpd) pieces in place, so a first step of disabling the display before first modeset enables us to get all of the dependencies outside of drm/msm in place. And this at least gets us parity with windows (which also appears to do a modeset between bootloader and HLSO). After that there is a bunch of drm/msm work that is probably not interesting to folks outside of dri-devel. Rob Clark (2): iommu: add support for drivers that manage iommu explicitly drm/msm: mark devices where iommu is managed by driver drivers/gpu/drm/msm/adreno/adreno_device.c | 1 + drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 1 + drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 1 + drivers/gpu/drm/msm/msm_drv.c | 1 + drivers/iommu/iommu.c | 11 +++++++++++ include/linux/device.h | 3 ++- 6 files changed, 17 insertions(+), 1 deletion(-) -- 2.20.1

5 years

4
15
0 0

Re: [Aarch64-laptops] [PATCH v8 3/5] arm64: dts: qcom: Add Lenovo Miix 630

by Dimitri John Ledkov

On Mon, 22 Jul 2019 at 20:33, Bjorn Andersson <bjorn.andersson(a)linaro.org> wrote: > > On Fri 21 Jun 07:54 PDT 2019, Jeffrey Hugo wrote: > > > This adds the initial DT for the Lenovo Miix 630 laptop. Supported > > functionality includes USB (host), microSD-card, keyboard, and trackpad. > > > > Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo(a)gmail.com> > > Applied patch 3-5 > Sorry for a basic question, but which linux tree would one expect these to be applied in? I've poked a few obvious places, and don't see these applied. Also is Yoga C630 going to be submitted on top of these? Or should I submit them? Regards, Dimitri. > Thanks, > Bjorn > > > --- > > arch/arm64/boot/dts/qcom/Makefile | 1 + > > .../boot/dts/qcom/msm8998-clamshell.dtsi | 240 ++++++++++++++++++ > > .../boot/dts/qcom/msm8998-lenovo-miix-630.dts | 30 +++ > > 3 files changed, 271 insertions(+) > > create mode 100644 arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi > > create mode 100644 arch/arm64/boot/dts/qcom/msm8998-lenovo-miix-630.dts > > > > diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile > > index 21d548f02d39..c3e4307bcbd4 100644 > > --- a/arch/arm64/boot/dts/qcom/Makefile > > +++ b/arch/arm64/boot/dts/qcom/Makefile > > @@ -6,6 +6,7 @@ dtb-$(CONFIG_ARCH_QCOM) += msm8916-mtp.dtb > > dtb-$(CONFIG_ARCH_QCOM) += msm8992-bullhead-rev-101.dtb > > dtb-$(CONFIG_ARCH_QCOM) += msm8994-angler-rev-101.dtb > > dtb-$(CONFIG_ARCH_QCOM) += msm8996-mtp.dtb > > +dtb-$(CONFIG_ARCH_QCOM) += msm8998-lenovo-miix-630.dtb > > dtb-$(CONFIG_ARCH_QCOM) += msm8998-mtp.dtb > > dtb-$(CONFIG_ARCH_QCOM) += sdm845-mtp.dtb > > dtb-$(CONFIG_ARCH_QCOM) += qcs404-evb-1000.dtb > > diff --git a/arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi b/arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi > > new file mode 100644 > > index 000000000000..9682d4dd7496 > > --- /dev/null > > +++ b/arch/arm64/boot/dts/qcom/msm8998-clamshell.dtsi > > @@ -0,0 +1,240 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* Copyright (c) 2019, Jeffrey Hugo. All rights reserved. */ > > + > > +/* > > + * Common include for MSM8998 clamshell devices, ie the Lenovo Miix 630, > > + * Asus NovaGo TP370QL, and HP Envy x2. All three devices are basically the > > + * same, with differences in peripherals. > > + */ > > + > > +#include "msm8998.dtsi" > > +#include "pm8998.dtsi" > > +#include "pm8005.dtsi" > > + > > +/ { > > + chosen { > > + }; > > + > > + vph_pwr: vph-pwr-regulator { > > + compatible = "regulator-fixed"; > > + regulator-name = "vph_pwr"; > > + regulator-always-on; > > + regulator-boot-on; > > + }; > > +}; > > + > > +&qusb2phy { > > + status = "okay"; > > + > > + vdda-pll-supply = <&vreg_l12a_1p8>; > > + vdda-phy-dpdm-supply = <&vreg_l24a_3p075>; > > +}; > > + > > +&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 = <&vph_pwr>; > > + vdd_l10_l23_l25-supply = <&vph_pwr>; > > + vdd_l13_l19_l21-supply = <&vph_pwr>; > > + vdd_l16_l28-supply = <&vph_pwr>; > > + vdd_l18_l22-supply = <&vph_pwr>; > > + vdd_l20_l24-supply = <&vph_pwr>; > > + 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>; > > + regulator-allow-set-load; > > + }; > > + vreg_l2a_1p2: l2 { > > + regulator-min-microvolt = <1200000>; > > + regulator-max-microvolt = <1200000>; > > + regulator-allow-set-load; > > + }; > > + 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>; > > + }; > > + 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>; > > + }; > > + > > + }; > > +}; > > + > > +&tlmm { > > + gpio-reserved-ranges = <0 4>, <81 4>; > > + > > + touchpad: touchpad { > > + config { > > + pins = "gpio123"; > > + bias-pull-up; /* pull up */ > > + }; > > + }; > > +}; > > + > > +&sdhc2 { > > + status = "okay"; > > + > > + vmmc-supply = <&vreg_l21a_2p95>; > > + vqmmc-supply = <&vreg_l13a_2p95>; > > + > > + pinctrl-names = "default", "sleep"; > > + pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>; > > + pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>; > > +}; > > + > > +&usb3 { > > + status = "okay"; > > +}; > > + > > +&usb3_dwc3 { > > + dr_mode = "host"; /* Force to host until we have Type-C hooked up */ > > +}; > > + > > +&usb3phy { > > + status = "okay"; > > + > > + vdda-phy-supply = <&vreg_l1a_0p875>; > > + vdda-pll-supply = <&vreg_l2a_1p2>; > > +}; > > diff --git a/arch/arm64/boot/dts/qcom/msm8998-lenovo-miix-630.dts b/arch/arm64/boot/dts/qcom/msm8998-lenovo-miix-630.dts > > new file mode 100644 > > index 000000000000..407c6a32911c > > --- /dev/null > > +++ b/arch/arm64/boot/dts/qcom/msm8998-lenovo-miix-630.dts > > @@ -0,0 +1,30 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* Copyright (c) 2019, Jeffrey Hugo. All rights reserved. */ > > + > > +/dts-v1/; > > + > > +#include "msm8998-clamshell.dtsi" > > + > > +/ { > > + model = "Lenovo Miix 630"; > > + compatible = "lenovo,miix-630", "qcom,msm8998"; > > +}; > > + > > +&blsp1_i2c6 { > > + status = "okay"; > > + > > + keyboard@3a { > > + compatible = "hid-over-i2c"; > > + interrupt-parent = <&tlmm>; > > + interrupts = <0x79 IRQ_TYPE_LEVEL_LOW>; > > + reg = <0x3a>; > > + hid-descr-addr = <0x0001>; > > + > > + pinctrl-names = "default"; > > + pinctrl-0 = <&touchpad>; > > + }; > > +}; > > + > > +&sdhc2 { > > + cd-gpios = <&tlmm 95 GPIO_ACTIVE_HIGH>; > > +}; > > -- > > 2.17.1 > > -- Regards, Dimitri.

5 years

3
2
0 0

status: WW28 and WW29

by Richard Henwood

Hi All, I was on leave last week. I just chatted with Lee and have this summary of the last two weeks. + Tested on-disk install. + Update Windows to get latest firmware. + Disable 'S' mode and resize Windows partitions. + Boot up the Custom Ubuntu installer, and install. + With the latest windows firmware, most USB sticks work? + SanDisk looks problematic. + Reproduced and tested GPU stack. + Not working yet. + Believed to be a problem with an old Mesa version. + Rawhide doesn't boot to grub any more :( Blocking and Todo issues: + Hack to disable DMA in Qualcomm's Gini driver is still required + Kernel command-line: 'efi=novamap' required until f/w is fixed + CONFIG_HID_SENSOR_HUB still breaks the keyboard + CONFIG_ACPI_BUTTON places us into suspend with no real way out + Trying to get DTB into 5.3 kernel. best regards, Richard -- Richard.Henwood(a)arm.com Server Software Eco-System Tel: +1 512 410 9612 IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

5 years

2
1
0 0

Network Support in ASUS NovaGo TP370QL

by Saravanan Somasundaram

Hi, I was able to follow the instructions in the following article and get Ubuntu booted successfully. https://github.com/aarch64-laptops/build#Flashing-the-image I understood that wireless network is not supported yet. If i plugin a USB Wii-Lan Adapter, the adapter is not recognized as well. Is there any other adapters that's known to work with ASUS Novago Laptop ? Thanks, Saravanan

5 years

2
5
0 0

Re: [Aarch64-laptops] [PATCH v7 2/2] Add a module for retrieving SMBIOS information

by Dimitri John Ledkov

On Fri, 5 Jul 2019 at 13:48, David Michael <fedora.dm0(a)gmail.com> wrote: > > The following are two use cases from Rajat Jain <rajatjain(a)juniper.net>: > > 1) We have a board that boots Linux and this board itself can be plugged into one of different chassis types. We need to pass different parameters to the kernel based on the "CHASSIS_TYPE" information that is passed by the bios in the DMI / SMBIOS tables. > > 2) We may have a USB stick that can go into multiple boards, and the exact kernel to be loaded depends on the machine information (PRODUCT_NAME etc) passed via the DMI. > > Signed-off-by: David Michael <fedora.dm0(a)gmail.com> > Another use case is aarch64 laptops effort. We have the same kernel, and the same image bootable and usable across 4 different laptop models, with the only difference between them being the DTB to load. I was looking at how I can distinguish between the four models and automatically pick the right dtb. I did see these patches and was very sad when I found out that they didn't get merged. Thank you for rebasing these on top of v2.04. I will try to cherrypick them on top of Debian's experimental 2.04 grub and try to build an installer "that just boots" without requiring users to pick a particular dtb menuentry by hand. There are only dtbs in these images, and only one right one for each model. (Post install, we have flash-kernel mechanisms to continuously flash and use the right dtb, this is needed for the installer's grub to be able to detect models and thus boot the right dtb) Whilst these laptops might become dtb-free in the future, I expect new hardware to come out which would need dtb picker based on SMBIOS info again. -- Regards, Dimitri.

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Aarch64-laptops July 2019