linux-kernel - [PATCH 4/5] arm64: dts: mediatek: cherry: Enable PCI-Express ports for WiFi

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Message-Id: <20230420094433.42794-5-angelogioacchino.delregno@collabora.com>
Date:   Thu, 20 Apr 2023 11:44:32 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     matthias.bgg@...il.com
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, kernel@...labora.com,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Subject: [PATCH 4/5] arm64: dts: mediatek: cherry: Enable PCI-Express ports for WiFi

On the Cherry platform, a MT7621 WiFi+Bluetooth combo is connected
over PCI-Express (for WiFi) and USB (for BT): enable the PCIe ports
to enable enumerating this chip.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 .../boot/dts/mediatek/mt8195-cherry.dtsi      | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index 46f1c8091498..9e2bc363c9cd 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -567,6 +567,13 @@ flash@0 {
 	};
 };
 
+&pcie1 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie1_pins_default>;
+};
+
 &pio {
 	mediatek,rsel-resistance-in-si-unit;
 	pinctrl-names = "default";
@@ -961,6 +968,24 @@ pins-vreg-en {
 		};
 	};
 
+	pcie0_pins_default: pcie0-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO19__FUNC_WAKEN>,
+				 <PINMUX_GPIO20__FUNC_PERSTN>,
+				 <PINMUX_GPIO21__FUNC_CLKREQN>;
+				 bias-pull-up;
+		};
+	};
+
+	pcie1_pins_default: pcie1-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO22__FUNC_PERSTN_1>,
+				 <PINMUX_GPIO23__FUNC_CLKREQN_1>,
+				 <PINMUX_GPIO24__FUNC_WAKEN_1>;
+				 bias-pull-up;
+		};
+	};
+
 	pio_default: pio-default-pins {
 		pins-wifi-enable {
 			pinmux = <PINMUX_GPIO58__FUNC_GPIO58>;
-- 
2.40.0