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/unphone/Source/Configuration.cpp

@@ -1,6 +1,5 @@
 #include "UnPhoneFeatures.h"
 #include "devices/Hx8357Display.h"
-#include "devices/SdCard.h"
 
 #include <Tactility/hal/Configuration.h>
 
@@ -9,7 +8,6 @@ bool initBoot();
 static tt::hal::DeviceVector createDevices() {
     return {
         createDisplay(),
-        createSdCard()
     };
 }
 

Devices/unphone/Source/devices/SdCard.cpp

@@ -1,36 +0,0 @@
-#include "SdCard.h"
-
-#include <tactility/device.h>
-#include <Tactility/lvgl/LvglSync.h>
-#include <Tactility/hal/sdcard/SpiSdCardDevice.h>
-
-#define UNPHONE_SDCARD_PIN_CS GPIO_NUM_43
-#define UNPHONE_LCD_PIN_CS GPIO_NUM_48
-#define UNPHONE_LORA_PIN_CS GPIO_NUM_44
-#define UNPHONE_TOUCH_PIN_CS GPIO_NUM_38
-
-using tt::hal::sdcard::SpiSdCardDevice;
-
-std::shared_ptr<SdCardDevice> createSdCard() {
-    auto configuration = std::make_unique<SpiSdCardDevice::Config>(
-        UNPHONE_SDCARD_PIN_CS,
-        GPIO_NUM_NC,
-        GPIO_NUM_NC,
-        GPIO_NUM_NC,
-        SdCardDevice::MountBehaviour::AtBoot,
-        tt::lvgl::getSyncLock(),
-        std::vector {
-            UNPHONE_LORA_PIN_CS,
-            UNPHONE_LCD_PIN_CS,
-            UNPHONE_TOUCH_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/unphone/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/unphone/unphone.dts

@@ -5,6 +5,9 @@
 #include <tactility/bindings/esp32_gpio.h>
 #include <tactility/bindings/esp32_i2c.h>
 #include <tactility/bindings/esp32_spi.h>
+#include <tactility/bindings/esp32_sdspi.h>
+#include <tactility/bindings/display_placeholder.h>
+#include <tactility/bindings/touch_placeholder.h>
 
 / {
 	compatible = "root";
@@ -30,9 +33,25 @@
 	sdcard_spi: spi0 {
 		compatible = "espressif,esp32-spi";
 		host = <SPI2_HOST>;
+		cs-gpios = <&gpio0 48 GPIO_FLAG_NONE>, // Display
+		           <&gpio0 38 GPIO_FLAG_NONE>, // Touch
+		           <&gpio0 43 GPIO_FLAG_NONE>; // SD card
 		pin-mosi = <&gpio0 40 GPIO_FLAG_NONE>;
 		pin-miso = <&gpio0 41 GPIO_FLAG_NONE>;
 		pin-sclk = <&gpio0 39 GPIO_FLAG_NONE>;
 		max-transfer-size = <65536>;
+
+		display@0 {
+			compatible = "display-placeholder";
+		};
+
+		touch@1 {
+			compatible = "touch-placeholder";
+		};
+
+		sdcard@2 {
+			compatible = "espressif,esp32-sdspi";
+			frequency-khz = <20000>;
+		};
 	};
 };