diff options
| author | Chen-Yu Tsai <wenst@chromium.org> | 2024-10-18 16:20:00 +0800 |
|---|---|---|
| committer | AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> | 2024-10-21 16:04:20 +0200 |
| commit | f766fae08f6a2eaeb45d8d2c053724c91526835c (patch) | |
| tree | 1f19669ca307d1d65890a2d1dd820dc9c3434571 /arch/arm64/boot/dts/mediatek | |
| parent | 26ea2459d1724406bf0b342df6b4b1f002d7f8e3 (diff) | |
arm64: dts: mediatek: mt8173-elm-hana: Add vdd-supply to second source trackpad
The Hana device has a second source option trackpad, but it is missing
its regulator supply. It only works because the regulator is marked as
always-on.
Add the regulator supply, but leave out the post-power-on delay. Instead,
document the post-power-on delay along with the reason for not adding
it in a comment.
Fixes: 689b937bedde ("arm64: dts: mediatek: add mt8173 elm and hana board")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20241018082001.1296963-1-wenst@chromium.org
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Diffstat (limited to 'arch/arm64/boot/dts/mediatek')
| -rw-r--r-- | arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi index 8d1cbc92bce3..ae0379fd42a9 100644 --- a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi @@ -49,6 +49,14 @@ interrupts-extended = <&pio 117 IRQ_TYPE_LEVEL_LOW>; reg = <0x2c>; hid-descr-addr = <0x0020>; + /* + * The trackpad needs a post-power-on delay of 100ms, + * but at time of writing, the power supply for it on + * this board is always on. The delay is therefore not + * added to avoid impacting the readiness of the + * trackpad. + */ + vdd-supply = <&mt6397_vgp6_reg>; wakeup-source; }; }; |