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Message-ID: <CAGXv+5EpgGhBGWupsQ9oFSyMr-QTma1O38XOPYj2fZ5mpOYYhg@mail.gmail.com>
Date: Mon, 4 Dec 2023 11:50:53 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: Hsin-Yi Wang <hsinyi@...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 Sat, Dec 2, 2023 at 9:45 AM Hsin-Yi Wang <hsinyi@...omium.org> wrote:
>
> 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.
Thanks for spotting the error. Fixed in the next version.
> > +
> > + touchpad@15 {
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&trackpad_pin>;
Pinctrl also dropped in the next version.
Same for mt8186-corsola-tentacruel-sku262148.dts.
Thanks
ChenYu
> > + 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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