[v4,26/26] arm64: dts: allwinner: a64-amarula-relic: Enable Techstar TS8550B MIPI-DSI panel
diff mbox series

Message ID 20181113111633.20189-27-jagan@amarulasolutions.com
State New
Headers show
Series
  • drm/sun4i: Allwinner A64 MIPI-DSI support
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Commit Message

Jagan Teki Nov. 13, 2018, 11:16 a.m. UTC
Amarula A64-Relic board by default bound with Techstar TS8550B
MIPI-DSI panel, add support for it.

DSI panel connected via board DSI port with,
- DC1SW as AVDD supply
- DCDC2 as DVDD supply
- DCDC1 as VCC-DSI supply
- PD24 gpio for reset pin
- PD23 gpio for backlight enable pin

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 .../allwinner/sun50i-a64-amarula-relic.dts    | 46 +++++++++++++++++++
 1 file changed, 46 insertions(+)

Comments

Andre Przywara Nov. 13, 2018, 12:32 p.m. UTC | #1
On Tue, 13 Nov 2018 16:46:33 +0530
Jagan Teki <jagan@amarulasolutions.com> wrote:

Hi,

I couldn't find a schematic for this board, but some things in here
look inconsistent:

> Amarula A64-Relic board by default bound with Techstar TS8550B
> MIPI-DSI panel, add support for it.
> 
> DSI panel connected via board DSI port with,
> - DC1SW as AVDD supply
> - DCDC2 as DVDD supply

Are you sure of that? That's typically the CPU power supply. Also I
can't find it below. Should that read DLDO2 instead?

> - DCDC1 as VCC-DSI supply

Can't find this below, either. Is it DLDO1?

> - PD24 gpio for reset pin
> - PD23 gpio for backlight enable pin
> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
>  .../allwinner/sun50i-a64-amarula-relic.dts    | 46
> +++++++++++++++++++ 1 file changed, 46 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..ecc0d8094815 100644 ---
> a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts +++
> b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts @@ -9,6
> +9,7 @@ #include "sun50i-a64.dtsi" 
>  #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/pwm/pwm.h>
>  
>  / {
>  	model = "Amarula A64-Relic";
> @@ -18,6 +19,14 @@
>  		serial0 = &uart0;
>  	};
>  
> +	backlight: backlight {
> +		compatible = "pwm-backlight";
> +		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
> +		brightness-levels = <1 2 4 8 16 32 64 128 512>;
> +		default-brightness-level = <2>;
> +		enable-gpios = <&pio 3 23 GPIO_ACTIVE_HIGH>; /*
> LCD-BL-EN: PD23 */
> +	};
> +
>  	chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
> @@ -30,6 +39,28 @@
>  	};
>  };
>  
> +&de {
> +	status = "okay";
> +};
> +
> +&dphy {
> +	status = "okay";
> +};
> +
> +&dsi {
> +	vcc-dsi-supply = <&reg_dldo1>;

Ah, there we have the SoC DSI power supply I was missing for the
BPi-M64 patch.
But is it DLDO1 or DCDC1, like you wrote above?

> +	status = "okay";
> +
> +	panel@0 {
> +		compatible = "techstar,ts8550b";
> +		reg = <0>;
> +		avdd-supply = <&reg_dc1sw>;
> +		dvdd-supply = <&reg_dldo2>;
> +		reset-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /*
> LCD-RST: PD24 */
> +		backlight = <&backlight>;
> +	};
> +};
> +
>  &ehci0 {
>  	status = "okay";
>  };
> @@ -72,6 +103,12 @@
>  	status = "okay";
>  };
>  
> +&pwm {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pwm_pin>;
> +	status = "okay";
> +};
> +
>  &r_rsb {
>  	status = "okay";
>  
> @@ -107,6 +144,15 @@
>  	regulator-name = "vcc-pll-avcc";
>  };
>  
> +&reg_dc1sw {
> +	/*
> +	 * This regulator also indirectly drives the PD pingroup
> GPIOs,
> +	 * which also controls the power LED.
> +	 */

Is that true for this board as well or is this just a copy&paste
leftover from the BananaPi-M64? If not, you should loose the
regulator-always-on property.

> +	regulator-always-on;
> +	regulator-name = "vcc-phy";

Shouldn't this be called "vcc-dsi" or so?

Cheers,
Andre.

> +};
> +
>  &reg_dcdc1 {
>  	regulator-always-on;
>  	regulator-min-microvolt = <3300000>;

Patch
diff mbox series

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..ecc0d8094815 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
@@ -9,6 +9,7 @@ 
 #include "sun50i-a64.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pwm/pwm.h>
 
 / {
 	model = "Amarula A64-Relic";
@@ -18,6 +19,14 @@ 
 		serial0 = &uart0;
 	};
 
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
+		brightness-levels = <1 2 4 8 16 32 64 128 512>;
+		default-brightness-level = <2>;
+		enable-gpios = <&pio 3 23 GPIO_ACTIVE_HIGH>; /* LCD-BL-EN: PD23 */
+	};
+
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
@@ -30,6 +39,28 @@ 
 	};
 };
 
+&de {
+	status = "okay";
+};
+
+&dphy {
+	status = "okay";
+};
+
+&dsi {
+	vcc-dsi-supply = <&reg_dldo1>;
+	status = "okay";
+
+	panel@0 {
+		compatible = "techstar,ts8550b";
+		reg = <0>;
+		avdd-supply = <&reg_dc1sw>;
+		dvdd-supply = <&reg_dldo2>;
+		reset-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* LCD-RST: PD24 */
+		backlight = <&backlight>;
+	};
+};
+
 &ehci0 {
 	status = "okay";
 };
@@ -72,6 +103,12 @@ 
 	status = "okay";
 };
 
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_pin>;
+	status = "okay";
+};
+
 &r_rsb {
 	status = "okay";
 
@@ -107,6 +144,15 @@ 
 	regulator-name = "vcc-pll-avcc";
 };
 
+&reg_dc1sw {
+	/*
+	 * This regulator also indirectly drives the PD pingroup GPIOs,
+	 * which also controls the power LED.
+	 */
+	regulator-always-on;
+	regulator-name = "vcc-phy";
+};
+
 &reg_dcdc1 {
 	regulator-always-on;
 	regulator-min-microvolt = <3300000>;