[PATCH v3 0/6] media/sun6i: Allwinner A64 CSI support

[PATCH v3 0/6] media/sun6i: Allwinner A64 CSI support

[Jagan Teki]

This series support CSI on Allwinner A64.

Allwinner A64 CSI has single channel time-multiplexed BT.656
CMOS sensor interface like H3 but work by lowering clock than
default mod clock.

Changes for v3:
- update dt-bindings for A64
- set mod clock via csi driver
- remove assign clocks from dtsi
- remove i2c-gpio opendrian
- fix avdd and dovdd supplies
- remove vcc-csi pin group supply

Note: This series created on top of H3 changes [1]

[1] https://patchwork.kernel.org/cover/10705905/

Any inputs,
Jagan. 

Jagan Teki (6):
  dt-bindings: media: sun6i: Add A64 CSI compatible
  media: sun6i: Add A64 compatible support
  media: sun6i: Set 300MHz mod clock for A64
  arm64: dts: allwinner: a64: Add A64 CSI controller
  arm64: dts: allwinner: a64: Add pinmux setting for CSI MCLK on PE1
  arm64: dts: allwinner: a64-amarula-relic: Add OV5640 camera node

 .../devicetree/bindings/media/sun6i-csi.txt   |  1 +
 .../allwinner/sun50i-a64-amarula-relic.dts    | 53 +++++++++++++++++++
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 25 +++++++++
 .../platform/sunxi/sun6i-csi/sun6i_csi.c      |  6 +++
 4 files changed, 85 insertions(+)

-- 
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[PATCH v3 1/6] dt-bindings: media: sun6i: Add A64 CSI compatible

[Jagan Teki]

Allwinner A64 CSI has single channel time-multiplexed BT.656
CMOS sensor interface like H3 but work by lowering clock than
default mod clock.

Add a compatible string for it.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 Documentation/devicetree/bindings/media/sun6i-csi.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/media/sun6i-csi.txt b/Documentation/devicetree/bindings/media/sun6i-csi.txt
index cc37cf7fd051..376aade669a1 100644
--- a/Documentation/devicetree/bindings/media/sun6i-csi.txt
+++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt
@@ -7,6 +7,7 @@ Required properties:
   - compatible: value must be one of:
     * "allwinner,sun6i-a31-csi"
     * "allwinner,sun8i-h3-csi"
+    * "allwinner,sun50i-a64-csi"
     * "allwinner,sun8i-v3s-csi"
   - reg: base address and size of the memory-mapped region.
   - interrupts: interrupt associated to this IP
-- 
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Re: [PATCH v3 1/6] dt-bindings: media: sun6i: Add A64 CSI compatible

[Rob Herring]

On Mon, 10 Dec 2018 17:22:41 +0530, Jagan Teki wrote:
> Allwinner A64 CSI has single channel time-multiplexed BT.656
> CMOS sensor interface like H3 but work by lowering clock than
> default mod clock.
> 
> Add a compatible string for it.
> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
>  Documentation/devicetree/bindings/media/sun6i-csi.txt | 1 +
>  1 file changed, 1 insertion(+)
> 

Reviewed-by: Rob Herring <robh@kernel.org>

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[PATCH v3 2/6] media: sun6i: Add A64 compatible support

[Jagan Teki]

Allwinner A64 CSI has single channel time-multiplexed BT.656
CMOS sensor interface like H3 but work by lowering clock than
default mod clock.

So use separate compatibe to support it.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
index ee882b66a5ea..bbe45e893722 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
@@ -892,6 +892,7 @@ static int sun6i_csi_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id sun6i_csi_of_match[] = {
+	{ .compatible = "allwinner,sun50i-a64-csi", },
 	{ .compatible = "allwinner,sun6i-a31-csi", },
 	{ .compatible = "allwinner,sun8i-h3-csi", },
 	{ .compatible = "allwinner,sun8i-v3s-csi", },
-- 
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Re: [PATCH v3 2/6] media: sun6i: Add A64 compatible support

[Maxime Ripard]

[-- Attachment #1.1: Type: text/plain, Size: 1104 bytes --]

On Mon, Dec 10, 2018 at 05:22:42PM +0530, Jagan Teki wrote:
> Allwinner A64 CSI has single channel time-multiplexed BT.656
> CMOS sensor interface like H3 but work by lowering clock than
> default mod clock.
> 
> So use separate compatibe to support it.
> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
>  drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> index ee882b66a5ea..bbe45e893722 100644
> --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> @@ -892,6 +892,7 @@ static int sun6i_csi_remove(struct platform_device *pdev)
>  }
>  
>  static const struct of_device_id sun6i_csi_of_match[] = {
> +	{ .compatible = "allwinner,sun50i-a64-csi", },

Even though it's not strictly alphabetical, we usually order the 50
after the 8.

Maxime

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[PATCH v3 3/6] media: sun6i: Set 300MHz mod clock for A64

[Jagan Teki]

The default CSI_SCLK seems unable to drive the sensor to capture
the image, so update it to working clock rate 300MHz for A64.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
index bbe45e893722..4b872800b244 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
@@ -822,6 +822,11 @@ static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
 		return PTR_ERR(sdev->clk_mod);
 	}
 
+	/* A64 need 300MHz mod clock to operate properly */
+	if (of_device_is_compatible(pdev->dev.of_node,
+				    "allwinner,sun50i-a64-csi"))
+		clk_set_rate_exclusive(sdev->clk_mod, 300000000);
+
 	sdev->clk_ram = devm_clk_get(&pdev->dev, "ram");
 	if (IS_ERR(sdev->clk_ram)) {
 		dev_err(&pdev->dev, "Unable to acquire dram-csi clock\n");
-- 
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Re: [PATCH v3 3/6] media: sun6i: Set 300MHz mod clock for A64

[Maxime Ripard]

[-- Attachment #1.1: Type: text/plain, Size: 1295 bytes --]

On Mon, Dec 10, 2018 at 05:22:43PM +0530, Jagan Teki wrote:
> The default CSI_SCLK seems unable to drive the sensor to capture
> the image, so update it to working clock rate 300MHz for A64.
> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
>  drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> index bbe45e893722..4b872800b244 100644
> --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> @@ -822,6 +822,11 @@ static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
>  		return PTR_ERR(sdev->clk_mod);
>  	}
>  
> +	/* A64 need 300MHz mod clock to operate properly */
> +	if (of_device_is_compatible(pdev->dev.of_node,
> +				    "allwinner,sun50i-a64-csi"))
> +		clk_set_rate_exclusive(sdev->clk_mod, 300000000);
> +

Where is that 300MHz coming from? You claim in your comment that it
"operates properly", yet in your previous mail about this, you were
saying that 1080p @30Hz is broken. Which one is it?

Maxime

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Re: [PATCH v3 3/6] media: sun6i: Set 300MHz mod clock for A64

[Jagan Teki]

On Tue, Dec 11, 2018 at 9:14 PM Maxime Ripard <maxime.ripard@bootlin.com> wrote:
>
> On Mon, Dec 10, 2018 at 05:22:43PM +0530, Jagan Teki wrote:
> > The default CSI_SCLK seems unable to drive the sensor to capture
> > the image, so update it to working clock rate 300MHz for A64.
> >
> > Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> > ---
> >  drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 5 +++++
> >  1 file changed, 5 insertions(+)
> >
> > diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> > index bbe45e893722..4b872800b244 100644
> > --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> > +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
> > @@ -822,6 +822,11 @@ static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
> >               return PTR_ERR(sdev->clk_mod);
> >       }
> >
> > +     /* A64 need 300MHz mod clock to operate properly */
> > +     if (of_device_is_compatible(pdev->dev.of_node,
> > +                                 "allwinner,sun50i-a64-csi"))
> > +             clk_set_rate_exclusive(sdev->clk_mod, 300000000);
> > +
>
> Where is that 300MHz coming from? You claim in your comment that it

from BSP, even "Chen-Yu Tsai" mentioned the same. (Chen-Yu, can you
comment here)

> "operates properly", yet in your previous mail about this, you were
> saying that 1080p @30Hz is broken. Which one is it?

1080p is broken from sensor end, ie what I mentioned on the respective mail.

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[PATCH v3 4/6] arm64: dts: allwinner: a64: Add A64 CSI controller

[Jagan Teki]

Allwinner A64 CSI controller has similar features as like in
H3, but work by lowering clock than default mod clock.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 384c417cb7a2..89a0deb3fe6a 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -532,6 +532,12 @@
 			interrupt-controller;
 			#interrupt-cells = <3>;
 
+			csi_pins: csi-pins {
+				pins = "PE0", "PE2", "PE3", "PE4", "PE5", "PE6",
+				       "PE7", "PE8", "PE9", "PE10", "PE11";
+				function = "csi0";
+			};
+
 			i2c0_pins: i2c0_pins {
 				pins = "PH0", "PH1";
 				function = "i2c0";
@@ -899,6 +905,20 @@
 			status = "disabled";
 		};
 
+		csi: csi@1cb0000 {
+			compatible = "allwinner,sun50i-a64-csi";
+			reg = <0x01cb0000 0x1000>;
+			interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ccu CLK_BUS_CSI>,
+				 <&ccu CLK_CSI_SCLK>,
+				 <&ccu CLK_DRAM_CSI>;
+			clock-names = "bus", "mod", "ram";
+			resets = <&ccu RST_BUS_CSI>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&csi_pins>;
+			status = "disabled";
+		};
+
 		hdmi: hdmi@1ee0000 {
 			compatible = "allwinner,sun50i-a64-dw-hdmi",
 				     "allwinner,sun8i-a83t-dw-hdmi";
-- 
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[PATCH v3 5/6] arm64: dts: allwinner: a64: Add pinmux setting for CSI MCLK on PE1

[Jagan Teki]

Some camera modules have the SoC feeding a master clock to the sensor
instead of having a standalone crystal. This clock signal is generated
from the clock control unit and output from the CSI MCLK function of
pin PE1.

Add a pinmux setting for it for camera sensors to reference.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 89a0deb3fe6a..dd5740bc3fc9 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -538,6 +538,11 @@
 				function = "csi0";
 			};
 
+			csi_mclk_pin: csi-mclk {
+				pins = "PE1";
+				function = "csi0";
+			};
+
 			i2c0_pins: i2c0_pins {
 				pins = "PH0", "PH1";
 				function = "i2c0";
-- 
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[PATCH v3 6/6] arm64: dts: allwinner: a64-amarula-relic: Add OV5640 camera node

[Jagan Teki]

Amarula A64-Relic board by default bound with OV5640 camera,
so add support for it with below pin information.

- PE13, PE12 via i2c-gpio bitbanging
- CLK_CSI_MCLK as external clock
- PE1 as external clock pin muxing
- ALDO1 as AVDD supply
- DLDO3 as DOVDD supply
- ELDO3 as DVDD supply
- PE14 gpio for reset pin
- PE15 gpio for powerdown pin

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 .../allwinner/sun50i-a64-amarula-relic.dts    | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
index 6cb2b7f0c817..ea6286ce5de3 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
@@ -22,6 +22,41 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	i2c-csi {
+		compatible = "i2c-gpio";
+		sda-gpios = <&pio 4 13 GPIO_ACTIVE_HIGH>; /* CSI-SDA: PE13 */
+		scl-gpios = <&pio 4 12 GPIO_ACTIVE_HIGH>; /* CSI-SCK: PE12 */
+		i2c-gpio,delay-us = <5>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ov5640: camera@3c {
+			compatible = "ovti,ov5640";
+			reg = <0x3c>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&csi_mclk_pin>;
+			clocks = <&ccu CLK_CSI_MCLK>;
+			clock-names = "xclk";
+
+			AVDD-supply = <&reg_aldo1>;
+			DOVDD-supply = <&reg_dldo3>;
+			DVDD-supply = <&reg_eldo3>;
+			reset-gpios = <&pio 4 14 GPIO_ACTIVE_LOW>; /* CSI-RST-R: PE14 */
+			powerdown-gpios = <&pio 4 15 GPIO_ACTIVE_HIGH>; /* CSI-STBY-R: PE15 */
+
+			port {
+				ov5640_ep: endpoint {
+					remote-endpoint = <&csi_ep>;
+					bus-width = <8>;
+					hsync-active = <1>; /* Active high */
+					vsync-active = <0>; /* Active low */
+					data-active = <1>;  /* Active high */
+					pclk-sample = <1>;  /* Rising */
+				};
+			};
+		};
+	};
+
 	wifi_pwrseq: wifi-pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		clocks = <&rtc 1>;
@@ -30,6 +65,24 @@
 	};
 };
 
+&csi {
+	status = "okay";
+
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi_ep: endpoint {
+			remote-endpoint = <&ov5640_ep>;
+			bus-width = <8>;
+			hsync-active = <1>; /* Active high */
+			vsync-active = <0>; /* Active low */
+			data-active = <1>;  /* Active high */
+			pclk-sample = <1>;  /* Rising */
+		};
+	};
+};
+
 &ehci0 {
 	status = "okay";
 };
-- 
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