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Date: Thu, 30 Apr 2020 11:57:39 +0200
From: Alexandre Torgue <alexandre.torgue@...com>
To: <dillon.minfei@...il.com>
CC: <sam@...nborg.org>, <airlied@...ux.ie>, <daniel@...ll.ch>,
<robh+dt@...nel.org>, <dri-devel@...ts.freedesktop.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<mcoquelin.stm32@...il.com>,
<linux-stm32@...md-mailman.stormreply.com>,
<linux-arm-kernel@...ts.infradead.org>, <thierry.reding@...il.com>
Subject: Re: [PATCH 1/4] add dts node for drm panel driver ili9341 add dts
i2c3 for stmpe touch add dts spi5 for gyro & ili9341
Hi
On 4/30/20 11:43 AM, dillon.minfei@...il.com wrote:
> From: dillon min <dillon.minfei@...il.com>
>
> Signed-off-by: dillon min <dillon.minfei@...il.com>
Commit title should be ARM: dts: stm32: bla bla on stm32f429 and please
a commit message.
> ---
> .../bindings/display/panel/ilitek,ili9341.txt | 42 +++++++++++
> arch/arm/boot/dts/stm32f4-pinctrl.dtsi | 79 +++++++++++++++++++
> arch/arm/boot/dts/stm32f429-disco.dts | 88 ++++++++++++++++++++++
> arch/arm/boot/dts/stm32f429.dtsi | 12 +++
> 4 files changed, 221 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/panel/ilitek,ili9341.txt
>
> diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.txt b/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.txt
This binding description should be in a separate patch and you have to
write in YAML format.
> new file mode 100644
> index 0000000..f5a4e55
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.txt
> @@ -0,0 +1,42 @@
> +Ilitek ILI9341 TFT panel driver with SPI control bus
> +
> +This is a driver for 240x320 TFT panels, accepting a rgb input
> +streams that get adapted and scaled to the panel.
> +
> +Required properties:
> + - compatible: "stm32f429-disco,ltdc-panel", "ilitek,ili9341"
> + (full system-specific compatible is always required to look up configuration)
> + - reg: address of the panel on the SPI bus
> +
> +Optional properties:
> + - reset-gpios: a GPIO spec for the reset pin, see gpio/gpio.txt
> + - dc-gpios: a GPIO spec for the dc pin, see gpio/gpio.txt
> +
> + The following optional properties only apply to RGB input mode:
> +
> + - pixelclk-active: see display/panel/display-timing.txt
> + - de-active: see display/panel/display-timing.txt
> + - hsync-active: see display/panel/display-timing.txt
> + - vsync-active: see display/panel/display-timing.txt
> +
> +The panel must obey the rules for a SPI slave device as specified in
> +spi/spi-bus.txt
> +
> +The device node can contain one 'port' child node with one child
> +'endpoint' node, according to the bindings defined in
> +media/video-interfaces.txt. This node should describe panel's video bus.
> +
> +Example:
> +
> +panel: display@0 {
> + compatible = "stm32f429-disco,ltdc-panel", "ilitek,ili9341";
> + reg = <0>;
> + spi-3wire;
> + spi-max-frequency = <10000000>;
> + dc-gpios = <&gpiod 13 0>;
> + port {
> + panel_in: endpoint {
> + remote-endpoint = <&display_out>;
> + };
> + };
> +};
> diff --git a/arch/arm/boot/dts/stm32f4-pinctrl.dtsi b/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
> index 392fa14..45b68f4 100644
> --- a/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
> +++ b/arch/arm/boot/dts/stm32f4-pinctrl.dtsi
> @@ -316,6 +316,85 @@
> };
> };
>
> + ltdc_pins_f429_disco: ltdc-1 {
> + pins {
> + pinmux = <STM32_PINMUX('C', 6, AF14)>,
> + /* LCD_HSYNC */
> + <STM32_PINMUX('A', 4, AF14)>,
> + /* LCD_VSYNC */
> + <STM32_PINMUX('G', 7, AF14)>,
> + /* LCD_CLK */
> + <STM32_PINMUX('C', 10, AF14)>,
> + /* LCD_R2 */
> + <STM32_PINMUX('B', 0, AF9)>,
> + /* LCD_R3 */
> + <STM32_PINMUX('A', 11, AF14)>,
> + /* LCD_R4 */
> + <STM32_PINMUX('A', 12, AF14)>,
> + /* LCD_R5 */
> + <STM32_PINMUX('B', 1, AF9)>,
> + /* LCD_R6*/
> + <STM32_PINMUX('G', 6, AF14)>,
> + /* LCD_R7 */
> + <STM32_PINMUX('A', 6, AF14)>,
> + /* LCD_G2 */
> + <STM32_PINMUX('G', 10, AF9)>,
> + /* LCD_G3 */
> + <STM32_PINMUX('B', 10, AF14)>,
> + /* LCD_G4 */
> + <STM32_PINMUX('D', 6, AF14)>,
> + /* LCD_B2 */
> + <STM32_PINMUX('G', 11, AF14)>,
> + /* LCD_B3*/
> + <STM32_PINMUX('B', 11, AF14)>,
> + /* LCD_G5 */
> + <STM32_PINMUX('C', 7, AF14)>,
> + /* LCD_G6 */
> + <STM32_PINMUX('D', 3, AF14)>,
> + /* LCD_G7 */
> + <STM32_PINMUX('G', 12, AF9)>,
> + /* LCD_B4 */
> + <STM32_PINMUX('A', 3, AF14)>,
> + /* LCD_B5 */
> + <STM32_PINMUX('B', 8, AF14)>,
> + /* LCD_B6 */
> + <STM32_PINMUX('B', 9, AF14)>,
> + /* LCD_B7 */
> + <STM32_PINMUX('F', 10, AF14)>;
> + /* LCD_DE */
> + slew-rate = <2>;
> + };
> + };
> +
> + i2c3_pins: i2c3-0 {
> + pins {
> + pinmux = <STM32_PINMUX('C', 9, AF4)>,
> + /* I2C3_SDA */
> + <STM32_PINMUX('A', 8, AF4)>;
> + /* I2C3_SCL */
> + bias-disable;
> + drive-open-drain;
> + slew-rate = <3>;
> + };
> + };
> +
> + spi5_pins: spi5-0 {
> + pins1 {
> + pinmux = <STM32_PINMUX('F', 7, AF5)>,
> + /* SPI5_CLK */
> + <STM32_PINMUX('F', 9, AF5)>;
> + /* SPI5_MOSI */
> + bias-disable;
> + drive-push-pull;
> + slew-rate = <0>;
> + };
> + pins2 {
> + pinmux = <STM32_PINMUX('F', 8, AF5)>;
> + /* SPI5_MISO */
> + bias-disable;
> + };
> + };
> +
> dcmi_pins: dcmi-0 {
> pins {
> pinmux = <STM32_PINMUX('A', 4, AF13)>, /* DCMI_HSYNC */
> diff --git a/arch/arm/boot/dts/stm32f429-disco.dts b/arch/arm/boot/dts/stm32f429-disco.dts
> index 30c0f67..55eed05 100644
> --- a/arch/arm/boot/dts/stm32f429-disco.dts
> +++ b/arch/arm/boot/dts/stm32f429-disco.dts
> @@ -49,6 +49,8 @@
> #include "stm32f429.dtsi"
> #include "stm32f429-pinctrl.dtsi"
> #include <dt-bindings/input/input.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/gpio/gpio.h>
>
> / {
> model = "STMicroelectronics STM32F429i-DISCO board";
> @@ -98,6 +100,14 @@
> regulator-name = "vcc5_host1";
> regulator-always-on;
> };
> +
> + reg_3p3v: regulator-3p3v {
3p3 ?
> + compatible = "regulator-fixed";
> + regulator-name = "3P3V";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> };
>
> &clk_hse {
> @@ -127,3 +137,81 @@
> pinctrl-names = "default";
> status = "okay";
> };
> +
> +<dc {
> + status = "okay";
> + pinctrl-0 = <<dc_pins_f429_disco>;
> + pinctrl-names = "default";
> +
> + port {
> + ltdc_out_rgb: endpoint {
> + remote-endpoint = <&panel_in_rgb>;
> + };
> + };
> +};
> +
> +&spi5 {
> + status = "okay";
> + pinctrl-0 = <&spi5_pins>;
> + pinctrl-names = "default";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + cs-gpios = <&gpioc 1 GPIO_ACTIVE_LOW>,<&gpioc 2 GPIO_ACTIVE_LOW>;
> + dmas = <&dma2 3 2 0x400 0x0>,
> + <&dma2 4 2 0x400 0x0>;
> + dma-names = "rx", "tx";
> + l3gd20: l3gd20@0 {
> + compatible = "st,l3gd20-gyro";
> + spi-max-frequency = <10000000>;
> + st,drdy-int-pin = <2>;
> + interrupt-parent = <&gpioa>;
> + interrupts = <1 IRQ_TYPE_EDGE_RISING>,
> + <2 IRQ_TYPE_EDGE_RISING>;
> + reg = <0>;
> + vddio = <®_3p3v>;
> + vdd = <®_3p3v>;
> + status = "okay";
> + };
> + display: display@1{
> + /* Connect panel-ilitek-9341 to ltdc */
> + compatible = "stm32f429-disco,ltdc-panel", "ilitek,ili9341";
> + reg = <1>;
> + spi-3wire;
> + spi-max-frequency = <10000000>;
> + dc-gpios = <&gpiod 13 0>;
> + port {
> + panel_in_rgb: endpoint {
> + remote-endpoint = <<dc_out_rgb>;
> + };
> + };
> + };
> +};
> +
> +&i2c3 {
Nodes are have to be ordered
> + pinctrl-names = "default";
> + pinctrl-0 = <&i2c3_pins>;
> + status = "okay";
> +
> + touch: stmpe811@41 {
> + compatible = "st,stmpe811";
> + reg = <0x41>;
> + interrupts = <15 IRQ_TYPE_EDGE_FALLING>;
> + interrupt-parent = <&gpioa>;
> + vio = <®_3p3v>;
> + vcc = <®_3p3v>;
> + status = "okay";
> +
> + stmpe_touchscreen {
> + compatible = "st,stmpe-ts";
> + st,sample-time = <4>;
> + st,mod-12b = <1>;
> + st,ref-sel = <0>;
> + st,adc-freq = <1>;
> + st,ave-ctrl = <1>;
> + st,touch-det-delay = <2>;
> + st,settling = <2>;
> + st,fraction-z = <7>;
> + st,i-drive = <1>;
> + };
> + };
> +};
> diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
> index d777069..257b843 100644
> --- a/arch/arm/boot/dts/stm32f429.dtsi
> +++ b/arch/arm/boot/dts/stm32f429.dtsi
> @@ -402,6 +402,18 @@
Split Soc updates in a separate patch
> status = "disabled";
> };
>
> + i2c3: i2c@...05c00 {
> + compatible = "st,stm32f4-i2c";
> + reg = <0x40005c00 0x400>;
> + interrupts = <72>,
> + <73>;
> + resets = <&rcc STM32F4_APB1_RESET(I2C3)>;
> + clocks = <&rcc 0 STM32F4_APB1_CLOCK(I2C3)>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + status = "disabled";
> + };
> +
> dac: dac@...07400 {
> compatible = "st,stm32f4-dac-core";
> reg = <0x40007400 0x400>;
>
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