[PATCH v6 0/2] Add MediaTek MT8365 I2C support

[PATCH v6 0/2] Add MediaTek MT8365 I2C support

[Alexandre Mergnat]

Hi,
This patch series adds I2C support for MT8365-EVK board.
The I2C-0 is enabled, it can be used through the board pin header,
as described directly on the PCB.

This series depends to another one which add support for
MT8365 SoC and EVK board. Link [1]
This dependancy has been applied by Matthias Brugger [3]

One patch has been cherry-picked from [2], so I've addressed the comment
and kept the trailer.

Regards,
Alex

[1]: https://lore.kernel.org/linux-mediatek/20230101220149.3035048-1-bero@baylibre.com/
[2]: https://lore.kernel.org/all/20220531135026.238475-2-fparent@baylibre.com/
[3]: https://lore.kernel.org/all/ed1f9faf-cb4f-9ff1-ab6b-813035a051bd@gmail.com/

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
Changes in v6:
- Remove mediatek,pull-up-adv which is a deprecated pin-control property.
- Link to v5: https://lore.kernel.org/r/20221122-mt8365-i2c-support-v5-0-6e4f3b54937f@baylibre.com

Changes in v5:
- Remove mediatek,drive-strength-adv which is a deprecated pin-control property.
- Link to v4: https://lore.kernel.org/r/20221122-mt8365-i2c-support-v4-0-885ad3301d5a@baylibre.com

Changes in v4:
- Fix some properties order.
- Remove the useless properties.
- Link to v3: https://lore.kernel.org/r/20221122-mt8365-i2c-support-v3-0-ad9bb1076d7f@baylibre.com

Changes in v3:
- Rebased to v6.3-rc1.
- Move i2c3 node to be consistent with the SoC address order.
- Link to v2: https://lore.kernel.org/r/20221122-mt8365-i2c-support-v2-0-e4c7c514e781@baylibre.com

Changes in v2:
- Drop the patch which do useless change in i2c-mt65xx.c driver.
- Change 2 lines compatible/reg in oneline.
- Link to v1: https://lore.kernel.org/r/20221122-mt8365-i2c-support-v1-0-4aeb7c54c67b@baylibre.com

---
Alexandre Mergnat (2):
      arm64: dts: mediatek: add i2c support for mt8365 SoC
      arm64: dts: mediatek: enable i2c0 for mt8365-evk board

 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 15 +++++++++
 arch/arm64/boot/dts/mediatek/mt8365.dtsi    | 48 +++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)
---
base-commit: 5c6b974d24c21a6aa5d8b524067d7d9bc7fcc4f2
change-id: 20221122-mt8365-i2c-support-fc048da261ea

Best regards,
-- 
Alexandre Mergnat <amergnat@baylibre.com>

[PATCH v6 1/2] arm64: dts: mediatek: add i2c support for mt8365 SoC

[Alexandre Mergnat]

There are four I2C master channels in MT8365 with a same HW architecture.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365.dtsi | 48 ++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
index 15ac4c1f0966..b70f4d256f63 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
@@ -282,6 +282,42 @@ pwm: pwm@11006000 {
 			clock-names = "top", "main", "pwm1", "pwm2", "pwm3";
 		};
 
+		i2c0: i2c@11007000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11007000 0 0xa0>, <0 0x11000080 0 0x80>;
+			interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C0_AXI>, <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@11008000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11008000 0 0xa0>, <0 0x11000100 0 0x80>;
+			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C1_AXI>, <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c2: i2c@11009000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11009000 0 0xa0>, <0 0x11000180 0 0x80>;
+			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C2_AXI>, <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		spi: spi@1100a000 {
 			compatible = "mediatek,mt8365-spi", "mediatek,mt7622-spi";
 			reg = <0 0x1100a000 0 0x100>;
@@ -295,6 +331,18 @@ spi: spi@1100a000 {
 			status = "disabled";
 		};
 
+		i2c3: i2c@1100f000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x1100f000 0 0xa0>, <0 0x11000200 0 0x80>;
+			interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C3_AXI>, <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		ssusb: usb@11201000 {
 			compatible = "mediatek,mt8365-mtu3", "mediatek,mtu3";
 			reg = <0 0x11201000 0 0x2e00>, <0 0x11203e00 0 0x0100>;

-- 
2.25.1

[PATCH v6 2/2] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

[Alexandre Mergnat]

Enable the I2C0 bus provides communication with:
- The integrated RT9466 Switching Battery Charger.
- The integrated MT6691 LP4X buck for VDDQ.
- The integrated MT6691 LP4X buck for VDD2.
- The pin header, to plug external I2C devices.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 4683704ea235..adc79ba14b33 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -87,6 +87,13 @@ optee_reserved: optee@43200000 {
 	};
 };
 
+&i2c0 {
+	clock-frequency = <100000>;
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &pio {
 	gpio_keys: gpio-keys-pins {
 		pins {
@@ -96,6 +103,14 @@ pins {
 		};
 	};
 
+	i2c0_pins: i2c0-pins {
+		pins {
+			bias-pull-up;
+			pinmux = <MT8365_PIN_57_SDA0__FUNC_SDA0_0>,
+				 <MT8365_PIN_58_SCL0__FUNC_SCL0_0>;
+		};
+	};
+
 	uart0_pins: uart0-pins {
 		pins {
 			pinmux = <MT8365_PIN_35_URXD0__FUNC_URXD0>,

-- 
2.25.1

Re: [PATCH v6 2/2] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

[AngeloGioacchino Del Regno]

Il 28/03/23 11:04, Alexandre Mergnat ha scritto:
> Enable the I2C0 bus provides communication with:
> - The integrated RT9466 Switching Battery Charger.
> - The integrated MT6691 LP4X buck for VDDQ.
> - The integrated MT6691 LP4X buck for VDD2.
> - The pin header, to plug external I2C devices.
> 
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
> ---
>   arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> index 4683704ea235..adc79ba14b33 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> @@ -87,6 +87,13 @@ optee_reserved: optee@43200000 {
>   	};
>   };
>   
> +&i2c0 {
> +	clock-frequency = <100000>;
> +	pinctrl-0 = <&i2c0_pins>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
>   &pio {
>   	gpio_keys: gpio-keys-pins {
>   		pins {
> @@ -96,6 +103,14 @@ pins {
>   		};
>   	};
>   
> +	i2c0_pins: i2c0-pins {
> +		pins {
> +			bias-pull-up;

I prefer seeing pinmux first, any other properties last....
If Matthias can please fix that while applying...

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Re: [PATCH v6 2/2] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

[Alexandre Mergnat]

Le mar. 28 mars 2023 à 12:05, AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> a écrit :
>
> Il 28/03/23 11:04, Alexandre Mergnat ha scritto:
> > Enable the I2C0 bus provides communication with:
> > - The integrated RT9466 Switching Battery Charger.
> > - The integrated MT6691 LP4X buck for VDDQ.
> > - The integrated MT6691 LP4X buck for VDD2.
> > - The pin header, to plug external I2C devices.
> >
> > Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
> > ---
> >   arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 15 +++++++++++++++
> >   1 file changed, 15 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> > index 4683704ea235..adc79ba14b33 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> > +++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> > @@ -87,6 +87,13 @@ optee_reserved: optee@43200000 {
> >       };
> >   };
> >
> > +&i2c0 {
> > +     clock-frequency = <100000>;
> > +     pinctrl-0 = <&i2c0_pins>;
> > +     pinctrl-names = "default";
> > +     status = "okay";
> > +};
> > +
> >   &pio {
> >       gpio_keys: gpio-keys-pins {
> >               pins {
> > @@ -96,6 +103,14 @@ pins {
> >               };
> >       };
> >
> > +     i2c0_pins: i2c0-pins {
> > +             pins {
> > +                     bias-pull-up;
>
> I prefer seeing pinmux first, any other properties last....

Here the pinctrl binding cleanup [1]

Regards,
Alex

[1]: https://lore.kernel.org/all/20230327-cleanup-pinctrl-binding-v1-0-b695e32e4f2e@baylibre.com/

Re: [PATCH v6 2/2] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

[Matthias Brugger]

On 28/03/2023 12:04, AngeloGioacchino Del Regno wrote:
> Il 28/03/23 11:04, Alexandre Mergnat ha scritto:
>> Enable the I2C0 bus provides communication with:
>> - The integrated RT9466 Switching Battery Charger.
>> - The integrated MT6691 LP4X buck for VDDQ.
>> - The integrated MT6691 LP4X buck for VDD2.
>> - The pin header, to plug external I2C devices.
>>
>> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
>> ---
>>   arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 15 +++++++++++++++
>>   1 file changed, 15 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts 
>> b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
>> index 4683704ea235..adc79ba14b33 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
>> +++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
>> @@ -87,6 +87,13 @@ optee_reserved: optee@43200000 {
>>       };
>>   };
>> +&i2c0 {
>> +    clock-frequency = <100000>;
>> +    pinctrl-0 = <&i2c0_pins>;
>> +    pinctrl-names = "default";
>> +    status = "okay";
>> +};
>> +
>>   &pio {
>>       gpio_keys: gpio-keys-pins {
>>           pins {
>> @@ -96,6 +103,14 @@ pins {
>>           };
>>       };
>> +    i2c0_pins: i2c0-pins {
>> +        pins {
>> +            bias-pull-up;
> 
> I prefer seeing pinmux first, any other properties last....
> If Matthias can please fix that while applying...
> 

Done and queued the whole series.

Thanks!
Matthias

> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> 
> 

Re: [PATCH v6 2/2] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

[Alexandre Mergnat]

Thanks Angelo and Matthis for your time !

Alex

Le jeu. 30 mars 2023 à 19:14, Matthias Brugger
<matthias.bgg@gmail.com> a écrit :
>
>
>
> On 28/03/2023 12:04, AngeloGioacchino Del Regno wrote:
> > Il 28/03/23 11:04, Alexandre Mergnat ha scritto:
> >> Enable the I2C0 bus provides communication with:
> >> - The integrated RT9466 Switching Battery Charger.
> >> - The integrated MT6691 LP4X buck for VDDQ.
> >> - The integrated MT6691 LP4X buck for VDD2.
> >> - The pin header, to plug external I2C devices.
> >>
> >> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
> >> ---
> >>   arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 15 +++++++++++++++
> >>   1 file changed, 15 insertions(+)
> >>
> >> diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> >> b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> >> index 4683704ea235..adc79ba14b33 100644
> >> --- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> >> +++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
> >> @@ -87,6 +87,13 @@ optee_reserved: optee@43200000 {
> >>       };
> >>   };
> >> +&i2c0 {
> >> +    clock-frequency = <100000>;
> >> +    pinctrl-0 = <&i2c0_pins>;
> >> +    pinctrl-names = "default";
> >> +    status = "okay";
> >> +};
> >> +
> >>   &pio {
> >>       gpio_keys: gpio-keys-pins {
> >>           pins {
> >> @@ -96,6 +103,14 @@ pins {
> >>           };
> >>       };
> >> +    i2c0_pins: i2c0-pins {
> >> +        pins {
> >> +            bias-pull-up;
> >
> > I prefer seeing pinmux first, any other properties last....
> > If Matthias can please fix that while applying...
> >
>
> Done and queued the whole series.
>
> Thanks!
> Matthias
>
> > Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> >
> >