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Message-ID: <079c023c-fa2d-1a5a-41ec-6d364067eb7d@gmail.com>
Date: Thu, 1 Sep 2022 10:13:18 +0200
From: Matthias Brugger <matthias.bgg@...il.com>
To: Peter Chiu <chui-hao.chiu@...iatek.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc: devicetree@...r.kernel.org, Ryder Lee <ryder.Lee@...iatek.com>,
Evelyn Tsai <evelyn.tsai@...iatek.com>,
Sam Shih <sam.shih@...iatek.com>,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] arm64: dts: mt7986: add built-in Wi-Fi device nodes
On 01/09/2022 05:47, Peter Chiu wrote:
> On Tue, 2022-08-30 at 10:43 +0200, Matthias Brugger wrote:
>>
>> On 30/06/2022 11:49, Peter Chiu wrote:
>>> This enables built-in 802.11ax Wi-Fi support.
>>>
>>> Reviewed-by: Sam Shih <sam.shih@...iatek.com>
>>> Reviewed-by: Ryder Lee <ryder.lee@...iatek.com>
>>> Signed-off-by: Peter Chiu <chui-hao.chiu@...iatek.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?
> The binding checker showed the groups setting is too long. We will send
> a patch to fix yaml by setting groups as string-array.
>
Wait, does this mean the binding was wrong in the first place, as you can't set
all three groups in one node?
>> Why can't we just merge wf_2g_5g_pins with wf_dbdc_pins?
> Since they use different pinmux settings on the same pin, we need to
> distinguish them.
>
wf-2g-5g-pins and wf-dbdc-pins set the same drive-strength to the very same
group of pins. What do you mean exactly? Sorry I'm not an expert on the pinctrl
infrastructure.
Regards,
Matthias
> Best Regards,
> Peter Chiu
>>
>> 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@...00000 {
>>> reg = <0 0x43000000 0 0x30000>;
>>> no-map;
>>> };
>>> +
>>> + wmcpu_emi: wmcpu-reserved@...00000 {
>>> + no-map;
>>> + reg = <0 0x4fc00000 0 0x00100000>;
>>> + };
>>> };
>>>
>>> timer {
>>> @@ -261,6 +267,23 @@ eth: ethernet@...00000 {
>>> #size-cells = <0>;
>>> status = "disabled";
>>> };
>>> +
>>> + wifi: wifi@...00000 {
>>> + 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>;
>>> + };
>>> + };
>>> +};
>
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