[PATCH 1/4] add dts node for drm panel driver ili9341 add dts i2c3 for stmpe touch add dts spi5 for gyro & ili9341
dillon min
dillon.minfei at gmail.com
Sat May 2 04:23:05 UTC 2020
Hi Alexandre,
Alexandre Torgue <alexandre.torgue at st.com> 于2020年4月30日周四 下午7:45写道：
>
>
> On 4/30/20 12:26 PM, dillon min wrote:
> > Hi Alexandre,
> >
> > Alexandre Torgue <alexandre.torgue at st.com
> > <mailto:alexandre.torgue at st.com>> 于2020年4月30日周四 下午5:57写道：
> >
> > Hi
> >
> > On 4/30/20 11:43 AM, dillon.minfei at gmail.com
> > <mailto:dillon.minfei at gmail.com> wrote:
> > > From: dillon min <dillon.minfei at gmail.com
> > <mailto:dillon.minfei at gmail.com>>
> > >
> > > Signed-off-by: dillon min <dillon.minfei at gmail.com
> > <mailto:dillon.minfei at gmail.com>>
> >
> > Commit title should be ARM: dts: stm32: bla bla on stm32f429 and
> please
> > a commit message.
> >
> >
> > *okay, thanks for your quicky response, this is my first kernel pull
> > request, i will resubmit all patchsets following the history submits
> > style who was did.*
>
> ok no pb. In general way you have to execute ./scripts/checkpatch.pl to
> check some style errors before sending. Use ./scripts/get_maintainer.pl
> to see to who you have to send the patch. When you have several patches
> in a series, you need to have a cover-letter which explains the aim of
> your series. To have an idea of commit format just use git log on the
> file changed to see how previous accepted commi have been written.
>
> More details here: Documentation/process/submitting-patches.rst
>
> okay, thanks alexandre, i will go through these docs. currently i'm on may
day holiday, will be back at next wensday.
after go back to work. i will separate this patch to five part with 9
patchs , should be more clear
dts releated
1, ARM: dts: stm32: Add i2c3 node for stm32f429
2, ARM: dts: stm32: Add drm panel ili9341 nodes connect to ldtc
support for stm32f429-disco board
3, ARM: dts: stm32: Add stmpe811 touch screen support for
stm32f429-disco board
4, ARM: dts: stm32: Add l3gd20 gyroscope sensor support for
stm32f429-disco board
clk releated
1, clk: stm32: Fix ltdc loading hang in set clk rate, pll_hw set to
clks[PLL_VCO_SAI] but not clks[PLL_SAI]
2, clk: stm32: Add CLK_IGNORE_UNUSED flags for ltdc, make sure ltdc clk
not be released after system startup
spi releated
1, spi: stm32: Add transfer mode SPI_SIMPLE_RX, SPI_3WIRE_RX support
for stm32f4
drm releated
1, drm/panel: Add panel driver ilitek-ili9341
doc releated
1, dt-bindings: display: panel: Add binding document for Ilitek Ili9341
TODO:
ltdc was verified by fbcon+logo, uname -a > /dev/tty0 , need more time to
write test code with libdrm to verify osd
stmpe811 need cross compile tslib to do touch screen calibration
l3gd20 was tested by read data from /sys/bus/iio, need cross compile libiio
to be verified by application with libiio
add dma2d to ltdc driver to speed up graphic render
dcmi camera with ov5640, the sdram might be not enough to support this.
currently after zImage load to sdram,
just leave less than 2M bytes for application.
>
> > > ---
> > > .../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.
> >
> > *okay, will do it later. *
> >
> >
> > > 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 at 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 ?
> >
> >
> > *yes, the mfd stmpe driver need vcc & vio regulator, st sensor core
> > driver need vddio & vdd*
>
> I talked about the name. Somthing vdd_3v3 would be better. See how it is
> done in other stm32fx platform
>
> Okay, will change to vdd_3v3
> >
> > > + 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 at 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 at 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
> >
> > *sorry, a little confused, i2c-3 is used by stmpe811 driver*
>
please give more information here, thanks.
> >
> >
> > > + pinctrl-names = "default";
> > > + pinctrl-0 = <&i2c3_pins>;
> > > + status = "okay";
> > > +
> > > + touch: stmpe811 at 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
> >
> > *okay, will do it later*
> >
> > > status = "disabled";
> > > };
> > >
> > > + i2c3: i2c at 40005c00 {
> > > + 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 at 40007400 {
> > > compatible = "st,stm32f4-dac-core";
> > > reg = <0x40007400 0x400>;
> > >
> >
>
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