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Message-ID: <CAJMQK-iPT6p1izqQCHmJD2+E_RmnDKQfxsgMetnKtwNgLUmx1A@mail.gmail.com>
Date: Fri, 1 Dec 2023 17:44:42 -0800
From: Hsin-Yi Wang <hsinyi@...omium.org>
To: Chen-Yu Tsai <wenst@...omium.org>
Cc: Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/9] arm64: dts: mediatek: Add MT8186 Krabby platform
based Tentacruel / Tentacool
On Fri, Dec 1, 2023 at 5:39 PM Chen-Yu Tsai <wenst@...omium.org> wrote:
>
> Tentacruel and Tentacool are MT8186 based Chromebooks based on the
> Krabby design.
>
> Tentacruel, also known as the ASUS Chromebook CM14 Flip CM1402F, is a
> convertible device with touchscreen and stylus.
>
> Tentacool, also known as the ASUS Chromebook CM14 CM1402C, is a laptop
> device. It does not have a touchscreen or stylus.
>
> The two devices both have two variants. The difference is a second
> source touchpad controller that shares the same address as the original,
> but is incompatible.
>
> The extra SKU IDs for the Tentacruel devices map to different sensor
> components attached to the Embedded Controller. These are not visible
> to the main processor.
>
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> ---
> Changes since v1:
> - Reorder SKU numbers in descending order.
> - Fixed pinconfig node names
> - Moved pinctrl-* properties after interrupts-*
> - Switched to interrupts-extended for external components
> - Marked ADSP as explicitly disabled, with a comment explaining that it
> stalls the system
> - Renamed "touchpad" to "trackpad"
> - Dropped bogus "no-laneswap" property from it6505 node
> - Moved "realtek,jd-src" property to after all the regulator supplies
> - Switched to macros for MT6366 regulator "regulator-allowed-modes"
> - Renamed "vgpu" regulator name to allow coupling, with a comment
> containing the name used in the design
> - Renamed "cr50" node name to "tpm"
> - Moved trackpad_pins reference up to i2c2; workaround for second source
> component resource sharing.
> - Fix copyright year
> - Fixed touchscreen supply name
>
> arch/arm64/boot/dts/mediatek/Makefile | 4 +
> .../dts/mediatek/mt8186-corsola-krabby.dtsi | 129 ++
> .../mt8186-corsola-tentacool-sku327681.dts | 57 +
> .../mt8186-corsola-tentacool-sku327683.dts | 26 +
> .../mt8186-corsola-tentacruel-sku262144.dts | 44 +
> .../mt8186-corsola-tentacruel-sku262148.dts | 28 +
> .../boot/dts/mediatek/mt8186-corsola.dtsi | 1719 +++++++++++++++++
> 7 files changed, 2007 insertions(+)
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8186-corsola-krabby.dtsi
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacool-sku327681.dts
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacool-sku327683.dts
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262144.dts
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262148.dts
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
>
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> index e6e7592a3645..442af61b1305 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
<snip>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacool-sku327683.dts b/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacool-sku327683.dts
> new file mode 100644
> index 000000000000..2e4d8df978c1
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacool-sku327683.dts
> @@ -0,0 +1,26 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright 2023 Google LLC
> + */
> +
> +#include "mt8186-corsola-tentacool-sku327681.dts"
> +
> +/ {
> + compatible = "google,tentacruel-sku327683", "google,tentacruel", "mediatek,mt8186";
> +};
> +
> +/* This variant replaces only the touchpad controller. */
> +&i2c2 {
> + /delete-node/ touchpad@15;
corsola.dtsi has this node named trackpad@15.
> +
> + touchpad@15 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&trackpad_pin>;
> + compatible = "hid-over-i2c";
> + reg = <0x15>;
> + interrupts-extended = <&pio 11 IRQ_TYPE_LEVEL_LOW>;
> + hid-descr-addr = <0x0001>;
> + vdd-supply = <&pp3300_s3>;
> + wakeup-source;
> + };
> +};
<snip>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262148.dts b/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262148.dts
> new file mode 100644
> index 000000000000..7841046084dc
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola-tentacruel-sku262148.dts
> @@ -0,0 +1,28 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright 2023 Google LLC
> + */
> +
> +#include "mt8186-corsola-tentacruel-sku262144.dts"
> +
> +/ {
> + compatible = "google,tentacruel-sku262151", "google,tentacruel-sku262150",
> + "google,tentacruel-sku262149", "google,tentacruel-sku262148",
> + "google,tentacruel", "mediatek,mt8186";
> +};
> +
> +/* This variant replaces only the touchpad controller. */
> +&i2c2 {
> + /delete-node/ touchpad@15;
> +
ditto.
> + touchpad@15 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&trackpad_pin>;
> + compatible = "hid-over-i2c";
> + reg = <0x15>;
> + interrupts-extended = <&pio 11 IRQ_TYPE_LEVEL_LOW>;
> + hid-descr-addr = <0x0001>;
> + vdd-supply = <&pp3300_s3>;
> + wakeup-source;
> + };
> +};
> diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
> new file mode 100644
> index 000000000000..c5446b18783d
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
> @@ -0,0 +1,1719 @@
<snip>
> +
> +&i2c2 {
> + pinctrl-names = "default";
> + /*
> + * Trackpad pin put here to work around second source components
> + * sharing the pinmux
> + */
> + pinctrl-0 = <&i2c2_pins>, <&trackpad_pin>;
> + clock-frequency = <400000>;
> + i2c-scl-internal-delay-ns = <10000>;
> + status = "okay";
> +
> + trackpad@15 {
> + compatible = "elan,ekth3000";
> + reg = <0x15>;
> + interrupts-extended = <&pio 11 IRQ_TYPE_LEVEL_LOW>;
> + vcc-supply = <&pp3300_s3>;
> + wakeup-source;
> + };
> +};
> +
<snip>
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