Driver improvements (#535)

- New drivers:
  - SD SPI
  - spi_peripheral
  - touch_placeholder
  - display_placeholder
- Devicetree compiler:
  - Implement phandle-arrays
  - Implement device addresses
- Add placeholder drivers to all devices with a SPI display
- SPI driver: add `cs-pins` and set them to high on driver start
- FileSystem: add `file_system_set_owner()` and `file_system_get_owner()`
- File locking is now checking if the related `FileSystem` is part of a shared SPI bus
- Add `device_get_child_count()`
- SDMMC driver: Remove default of `slot` value
- Fix for Crowpanel Basic 3.5" display (add delay to booting)
- Fix for LilyGO T-HMI SD card mounting (delayed mounting by disabling it initially in the dts)

Devices/m5stack-stackchan/Source/Configuration.cpp

@@ -1,7 +1,5 @@
 #include "devices/Display.h"
 #include "devices/Power.h"
-#include "devices/SdCard.h"
-#include <driver/gpio.h>
 
 #include <tactility/device.h>
 #include <tactility/drivers/i2c_controller.h>
@@ -243,7 +241,6 @@ static DeviceVector createDevices() {
         axp2101,
         std::make_shared<Axp2101Power>(axp2101),
         createPower(),
-        createSdCard(),
         createDisplay(),
     };
 }

Devices/m5stack-stackchan/Source/devices/SdCard.cpp

@@ -1,30 +0,0 @@
-#include "SdCard.h"
-
-#include <tactility/device.h>
-#include <Tactility/lvgl/LvglSync.h>
-#include <Tactility/hal/sdcard/SpiSdCardDevice.h>
-
-constexpr auto STACKCHAN_SDCARD_PIN_CS = GPIO_NUM_4;
-constexpr auto STACKCHAN_LCD_PIN_CS = GPIO_NUM_3;
-
-using tt::hal::sdcard::SpiSdCardDevice;
-
-std::shared_ptr<SdCardDevice> createSdCard() {
-    auto configuration = std::make_unique<SpiSdCardDevice::Config>(
-        STACKCHAN_SDCARD_PIN_CS,
-        GPIO_NUM_NC,
-        GPIO_NUM_NC,
-        GPIO_NUM_NC,
-        SdCardDevice::MountBehaviour::AtBoot,
-        tt::lvgl::getSyncLock(),
-        std::vector { STACKCHAN_LCD_PIN_CS }
-    );
-
-    auto* spi_controller = device_find_by_name("spi0");
-    check(spi_controller, "spi0 not found");
-
-    return std::make_shared<SpiSdCardDevice>(
-        std::move(configuration),
-        spi_controller
-    );
-}

Devices/m5stack-stackchan/Source/devices/SdCard.h

@@ -1,7 +0,0 @@
-#pragma once
-
-#include "Tactility/hal/sdcard/SdCardDevice.h"
-
-using tt::hal::sdcard::SdCardDevice;
-
-std::shared_ptr<SdCardDevice> createSdCard();

Devices/m5stack-stackchan/m5stack,stackchan.dts

@@ -12,6 +12,8 @@
 #include <bindings/bm8563.h>
 #include <bindings/ina226.h>
 #include <bindings/py32ioexpander.h>
+#include <tactility/bindings/esp32_sdspi.h>
+#include <tactility/bindings/display_placeholder.h>
 
 // Reference: https://docs.m5stack.com/en/StackChan
 / {
@@ -110,9 +112,21 @@
 	spi0 {
 		compatible = "espressif,esp32-spi";
 		host = <SPI2_HOST>;
+		cs-gpios = <&gpio0 3 GPIO_FLAG_NONE>, // Display
+		           <&gpio0 4 GPIO_FLAG_NONE>; // SD card
 		pin-mosi = <&gpio0 37 GPIO_FLAG_NONE>;
 		pin-miso = <&gpio0 35 GPIO_FLAG_NONE>;
 		pin-sclk = <&gpio0 36 GPIO_FLAG_NONE>;
+
+		display@0 {
+			compatible = "display-placeholder";
+		};
+
+		sdcard@1 {
+			compatible = "espressif,esp32-sdspi";
+			status = "disabled"; // Must be started after display
+			frequency-khz = <20000>;
+		};
 	};
 
 	// AW88298 speaker + ES7210 microphone