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/cyd-e32r32p/Source/Configuration.cpp

@@ -1,10 +1,7 @@
-#include "devices/SdCard.h"
 #include "devices/Display.h"
 #include "devices/Power.h"
-#include <driver/gpio.h>
 
 #include <Tactility/hal/Configuration.h>
-#include <Tactility/lvgl/LvglSync.h>
 #include <PwmBacklight.h>
 
 using namespace tt::hal;
@@ -17,7 +14,6 @@ static tt::hal::DeviceVector createDevices() {
     return {
         createPower(),
         createDisplay(),
-        createSdCard()
     };
 }
 

Devices/cyd-e32r32p/Source/devices/SdCard.cpp

@@ -1,29 +0,0 @@
-#include "SdCard.h"
-
-#include <tactility/device.h>
-#include <Tactility/hal/sdcard/SpiSdCardDevice.h>
-#include <Tactility/RecursiveMutex.h>
-
-using tt::hal::sdcard::SpiSdCardDevice;
-using SdCardDevice = tt::hal::sdcard::SdCardDevice;
-
-std::shared_ptr<SdCardDevice> createSdCard() {
-    auto configuration = std::make_unique<SpiSdCardDevice::Config>(
-        SD_CS_PIN,                         // CS pin (IO5 on the module)
-        GPIO_NUM_NC,                           // MOSI override: leave NC to use SPI host pins
-        GPIO_NUM_NC,                           // MISO override: leave NC
-        GPIO_NUM_NC,                           // SCLK override: leave NC
-        SdCardDevice::MountBehaviour::AtBoot,
-        std::make_shared<tt::RecursiveMutex>(),
-        std::vector<gpio_num_t>(),
-        SD_SPI_HOST                        // SPI host for SD card (SPI3_HOST)
-    );
-
-    auto* spi_controller = device_find_by_name("spi1");
-    check(spi_controller, "spi1 not found");
-
-    return std::make_shared<SpiSdCardDevice>(
-        std::move(configuration),
-        spi_controller
-    );
-}

Devices/cyd-e32r32p/Source/devices/SdCard.h

@@ -1,13 +0,0 @@
-#pragma once
-
-#include <Tactility/hal/sdcard/SdCardDevice.h>
-#include "driver/gpio.h"
-#include "driver/spi_common.h"
-
-using tt::hal::sdcard::SdCardDevice;
-
-// SD card (microSD)
-constexpr auto SD_CS_PIN = GPIO_NUM_5;
-constexpr auto SD_SPI_HOST = SPI3_HOST;
-
-std::shared_ptr<SdCardDevice> createSdCard();

Devices/cyd-e32r32p/cyd,e32r32p.dts

@@ -4,6 +4,9 @@
 #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";
@@ -22,19 +25,35 @@
 		pin-scl = <&gpio0 25 GPIO_FLAG_NONE>;
 	};
 
-	display_spi: spi0 {
+	spi0 {
 		compatible = "espressif,esp32-spi";
 		host = <SPI2_HOST>;
+		cs-gpios = <&gpio0 15 GPIO_FLAG_NONE>, // Display
+		            <&gpio0 33 GPIO_FLAG_NONE>; // Touch
 		pin-mosi = <&gpio0 13 GPIO_FLAG_NONE>;
 		pin-miso = <&gpio0 12 GPIO_FLAG_NONE>;
 		pin-sclk = <&gpio0 14 GPIO_FLAG_NONE>;
+	
+		display@0 {
+			compatible = "display-placeholder";
+		};
+
+		touch@1 {
+			compatible = "touch-placeholder";
+		};
 	};
 
-	sdcard_spi: spi1 {
+	spi1 {
 		compatible = "espressif,esp32-spi";
 		host = <SPI3_HOST>;
+		cs-gpios = <&gpio0 5 GPIO_FLAG_NONE>;
 		pin-mosi = <&gpio0 23 GPIO_FLAG_NONE>;
 		pin-miso = <&gpio0 19 GPIO_FLAG_NONE>;
 		pin-sclk = <&gpio0 18 GPIO_FLAG_NONE>;
+	
+		sdcard@0 {
+			compatible = "espressif,esp32-sdspi";
+			frequency-khz = <20000>;
+		};
 	};
 };