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Message-ID: <b6524da2-34d6-cb7b-c8bf-19809e8932ed@gmail.com>
Date:   Tue, 30 Aug 2022 10:43:26 +0200
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To:     Peter Chiu <chui-hao.chiu@mediatek.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc:     devicetree@vger.kernel.org, Ryder Lee <ryder.Lee@mediatek.com>,
        Evelyn Tsai <evelyn.tsai@mediatek.com>,
        Sam Shih <sam.shih@mediatek.com>,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org
References: <20220630094909.8014-1-chui-hao.chiu@mediatek.com>
From:   Matthias Brugger <matthias.bgg@gmail.com>
Subject: Re: [PATCH v4] arm64: dts: mt7986: add built-in Wi-Fi device nodes
In-Reply-To: <20220630094909.8014-1-chui-hao.chiu@mediatek.com>
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On 30/06/2022 11:49, Peter Chiu wrote:
> This enables built-in 802.11ax Wi-Fi support.
> 
> Reviewed-by: Sam Shih <sam.shih@mediatek.com>
> Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
> Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
> ---
> v2: add clocks and clock-names.
> v3: rename wmac to wifi and change underscores to dash in node names.
> v4: rebase to the latest codebase.
> ---
>   arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts | 41 +++++++++++++++++++
>   arch/arm64/boot/dts/mediatek/mt7986a.dtsi    | 23 +++++++++++
>   arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts | 43 ++++++++++++++++++++
>   3 files changed, 107 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
> index 882277a..28cd168 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
> @@ -115,6 +115,13 @@ &uart2 {
>   	status = "okay";
>   };
>   
> +&wifi {
> +	status = "okay";
> +	pinctrl-names = "default", "dbdc";
> +	pinctrl-0 = <&wf_2g_5g_pins>;
> +	pinctrl-1 = <&wf_dbdc_pins>;
> +};
> +
>   &pio {
>   	uart1_pins: uart1-pins {
>   		mux {
> @@ -129,4 +136,38 @@ mux {
>   			groups = "uart2";
>   		};
>   	};
> +
> +	wf_2g_5g_pins: wf-2g-5g-pins {
> +		mux {
> +			function = "wifi";
> +			groups = "wf_2g", "wf_5g";

yaml says:
          - if:
               properties:
                 function:
                   const: wifi
             then:
               properties:
                 groups:
                   enum: [wf_2g, wf_5g, wf_dbdc]


Did you run the binding checker against this DTS?
Why can't we just merge wf_2g_5g_pins with wf_dbdc_pins?

Regards,
Matthias

> +		};
> +		conf {
> +			pins = "WF0_HB1", "WF0_HB2", "WF0_HB3", "WF0_HB4",
> +			       "WF0_HB0", "WF0_HB0_B", "WF0_HB5", "WF0_HB6",
> +			       "WF0_HB7", "WF0_HB8", "WF0_HB9", "WF0_HB10",
> +			       "WF0_TOP_CLK", "WF0_TOP_DATA", "WF1_HB1",
> +			       "WF1_HB2", "WF1_HB3", "WF1_HB4", "WF1_HB0",
> +			       "WF1_HB5", "WF1_HB6", "WF1_HB7", "WF1_HB8",
> +			       "WF1_TOP_CLK", "WF1_TOP_DATA";
> +			drive-strength = <4>;
> +		};
> +	};
> +
> +	wf_dbdc_pins: wf-dbdc-pins {
> +		mux {
> +			function = "wifi";
> +			groups = "wf_dbdc";
> +		};
> +		conf {
> +			pins = "WF0_HB1", "WF0_HB2", "WF0_HB3", "WF0_HB4",
> +			       "WF0_HB0", "WF0_HB0_B", "WF0_HB5", "WF0_HB6",
> +			       "WF0_HB7", "WF0_HB8", "WF0_HB9", "WF0_HB10",
> +			       "WF0_TOP_CLK", "WF0_TOP_DATA", "WF1_HB1",
> +			       "WF1_HB2", "WF1_HB3", "WF1_HB4", "WF1_HB0",
> +			       "WF1_HB5", "WF1_HB6", "WF1_HB7", "WF1_HB8",
> +			       "WF1_TOP_CLK", "WF1_TOP_DATA";
> +			drive-strength = <4>;
> +		};
> +	};
>   };
> diff --git a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
> index e3a407d..890ded0 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
> @@ -7,6 +7,7 @@
>   #include <dt-bindings/interrupt-controller/irq.h>
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>   #include <dt-bindings/clock/mt7986-clk.h>
> +#include <dt-bindings/reset/mt7986-resets.h>
>   
>   / {
>   	interrupt-parent = <&gic>;
> @@ -70,6 +71,11 @@ secmon_reserved: secmon@43000000 {
>   			reg = <0 0x43000000 0 0x30000>;
>   			no-map;
>   		};
> +
> +		wmcpu_emi: wmcpu-reserved@4fc00000 {
> +			no-map;
> +			reg = <0 0x4fc00000 0 0x00100000>;
> +		};
>   	};
>   
>   	timer {
> @@ -261,6 +267,23 @@ eth: ethernet@15100000 {
>   			#size-cells = <0>;
>   			status = "disabled";
>   		};
> +
> +		wifi: wifi@18000000 {
> +			compatible = "mediatek,mt7986-wmac";
> +			resets = <&watchdog MT7986_TOPRGU_CONSYS_SW_RST>;
> +			reset-names = "consys";
> +			clocks = <&topckgen CLK_TOP_CONN_MCUSYS_SEL>,
> +				 <&topckgen CLK_TOP_AP2CNN_HOST_SEL>;
> +			clock-names = "mcu", "ap2conn";
> +			reg = <0 0x18000000 0 0x1000000>,
> +			      <0 0x10003000 0 0x1000>,
> +			      <0 0x11d10000 0 0x1000>;
> +			interrupts = <GIC_SPI 213 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 214 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 216 IRQ_TYPE_LEVEL_HIGH>;
> +			memory-region = <&wmcpu_emi>;
> +		};
>   	};
>   
>   };
> diff --git a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
> index 0f49d57..7f21b10 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
> @@ -98,3 +98,46 @@ fixed-link {
>   		};
>   	};
>   };
> +
> +&wifi {
> +	status = "okay";
> +	pinctrl-names = "default", "dbdc";
> +	pinctrl-0 = <&wf_2g_5g_pins>;
> +	pinctrl-1 = <&wf_dbdc_pins>;
> +};
> +
> +&pio {
> +	wf_2g_5g_pins: wf-2g-5g-pins {
> +		mux {
> +			function = "wifi";
> +			groups = "wf_2g", "wf_5g";
> +		};
> +		conf {
> +			pins = "WF0_HB1", "WF0_HB2", "WF0_HB3", "WF0_HB4",
> +			       "WF0_HB0", "WF0_HB0_B", "WF0_HB5", "WF0_HB6",
> +			       "WF0_HB7", "WF0_HB8", "WF0_HB9", "WF0_HB10",
> +			       "WF0_TOP_CLK", "WF0_TOP_DATA", "WF1_HB1",
> +			       "WF1_HB2", "WF1_HB3", "WF1_HB4", "WF1_HB0",
> +			       "WF1_HB5", "WF1_HB6", "WF1_HB7", "WF1_HB8",
> +			       "WF1_TOP_CLK", "WF1_TOP_DATA";
> +			drive-strength = <4>;
> +		};
> +	};
> +
> +	wf_dbdc_pins: wf-dbdc-pins {
> +		mux {
> +			function = "wifi";
> +			groups = "wf_dbdc";
> +		};
> +		conf {
> +			pins = "WF0_HB1", "WF0_HB2", "WF0_HB3", "WF0_HB4",
> +			       "WF0_HB0", "WF0_HB0_B", "WF0_HB5", "WF0_HB6",
> +			       "WF0_HB7", "WF0_HB8", "WF0_HB9", "WF0_HB10",
> +			       "WF0_TOP_CLK", "WF0_TOP_DATA", "WF1_HB1",
> +			       "WF1_HB2", "WF1_HB3", "WF1_HB4", "WF1_HB0",
> +			       "WF1_HB5", "WF1_HB6", "WF1_HB7", "WF1_HB8",
> +			       "WF1_TOP_CLK", "WF1_TOP_DATA";
> +			drive-strength = <4>;
> +		};
> +	};
> +};