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Tue, 12 Aug 2025 13:30:32 -0700 (PDT) From: Alexey Charkov Date: Wed, 13 Aug 2025 00:30:24 +0400 Subject: [PATCH 2/3] arm64: dts: rockchip: Add WiFi on rk3576-evb1-v10 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250813-evb1-rtcwifibt-v1-2-d13c83422971@gmail.com> References: <20250813-evb1-rtcwifibt-v1-0-d13c83422971@gmail.com> In-Reply-To: <20250813-evb1-rtcwifibt-v1-0-d13c83422971@gmail.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Pavel Zhovner , Alexey Charkov X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1755030626; l=2878; i=alchark@gmail.com; s=20250416; h=from:subject:message-id; bh=9DqcJtTzlqb1sSS7J90kHNHmzcXcp/6yYNEDD9Y/4d4=; b=ZEYpBvII7kSWRyvS+kKlecvScuKWTqUQ49vogugzgI47oBWYhuLAI2pMP+g7Vh8G14THuG116 Tc2LrzMOkrJCFGqxp06jHZ7m2Wufydr19hT+JuqwQuOvBvcPk6zqW7J X-Developer-Key: i=alchark@gmail.com; a=ed25519; pk=ltKbQzKLTJPiDgPtcHxdo+dzFthCCMtC3V9qf7+0rkc= Add device tree nodes to enable the onboard Ampak AP6275P WiFi chip connected over a PCIe link on Rockchip RK3576 EVB1. It takes an external 32 kHz clock from the RTC chip and requires the WIFI_REG_ON signal to be enabled before the bus is enumerated to initialize properly. Tested-by: Pavel Zhovner Signed-off-by: Alexey Charkov --- arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts | 58 ++++++++++++++++++++= ++++ 1 file changed, 58 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts b/arch/arm64/= boot/dts/rockchip/rk3576-evb1-v10.dts index bfefd37a1ab8c67a17aba0cdb80980102d66bb76..100ca2e23c6093ae517d741fcd0= 47e2a8172f457 100644 --- a/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts +++ b/arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts @@ -232,6 +232,20 @@ vcc_ufs_s0: regulator-vcc-ufs-s0 { regulator-max-microvolt =3D <3300000>; vin-supply =3D <&vcc_sys>; }; + + vcc_wifi_reg_on: regulator-wifi-reg-on { + compatible =3D "regulator-fixed"; + enable-active-high; + gpios =3D <&gpio1 RK_PC6 GPIO_ACTIVE_HIGH>; + pinctrl-0 =3D <&wifi_reg_on>; + pinctrl-names =3D "default"; + regulator-always-on; + regulator-boot-on; + regulator-name =3D "wifi_reg_on"; + regulator-min-microvolt =3D <1800000>; + regulator-max-microvolt =3D <1800000>; + vin-supply =3D <&vcc_1v8_s3>; + }; }; =20 &cpu_l0 { @@ -242,6 +256,10 @@ &cpu_b0 { cpu-supply =3D <&vdd_cpu_big_s0>; }; =20 +&combphy0_ps { + status =3D "okay"; +}; + &combphy1_psu { status =3D "okay"; }; @@ -712,6 +730,30 @@ rgmii_phy1: phy@1 { }; }; =20 +&pcie0 { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pcie0_rst>; + reset-gpios =3D <&gpio2 RK_PB4 GPIO_ACTIVE_HIGH>; + vpcie3v3-supply =3D <&vcc_3v3_s3>; + status =3D "okay"; + + pcie@0,0 { + reg =3D <0x0 0 0 0 0>; + #address-cells =3D <3>; + #size-cells =3D <2>; + bus-range =3D <0x0 0xf>; + device_type =3D "pci"; + ranges; + + wifi: wifi@0,0 { + compatible =3D "pci14e4,449d"; + reg =3D <0x10000 0 0 0 0>; + clocks =3D <&hym8563>; + clock-names =3D "lpo"; + }; + }; +}; + &pcie1 { reset-gpios =3D <&gpio4 RK_PC4 GPIO_ACTIVE_HIGH>; vpcie3v3-supply =3D <&vcc3v3_pcie1>; @@ -730,6 +772,12 @@ rtc_int: rtc-int { }; }; =20 + pcie0 { + pcie0_rst: pcie0-rst { + rockchip,pins =3D <2 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>; + }; + }; + usb { usb_host_pwren: usb-host-pwren { rockchip,pins =3D <0 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>; @@ -743,6 +791,16 @@ usbc0_int: usbc0-int { rockchip,pins =3D <0 RK_PA5 RK_FUNC_GPIO &pcfg_pull_up>; }; }; + + wifi { + wifi_reg_on: wifi-reg-on { + rockchip,pins =3D <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_up>; + }; + + wifi_wake_host: wifi-wake-host { + rockchip,pins =3D <0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_down>; + }; + }; }; =20 &sdmmc { --=20 2.49.1