Merge pull request #43 from chmcax/essential

board: introduce support for Nokia 3 (essential)

board/Kconfig

@@ -28,6 +28,13 @@ menu "Device Support"
 		help
 		  Say Y if you want to include support for CMF Phone 1
 
+	config NOKIA_ESSENTIAL
+		bool "Support for Nokia 3"
+		default n
+		depends on MT6735
+		help
+		  Say Y if you want to include support for Nokia 3
+
 	config NOTHING_TETRIS_DISABLE_WDT
 		bool "Disable the watchdog timer on startup"
 		default y

board/Makefile

@@ -1,6 +1,7 @@
 lib-$(CONFIG_APPLE_N61AP) += apple/board-n61ap.o
 lib-$(CONFIG_AMAZON_PW3) += amazon/board-pw3.o
 lib-$(CONFIG_GOOGLE_TAIMEN) += google/board-taimen.o
+lib-$(CONFIG_NOKIA_ESSENTIAL) += nokia/board-essential.o
 lib-$(CONFIG_NOTHING_TETRIS) += nothing/board-tetris.o
 lib-$(CONFIG_QEMU_BOARD_VIRT) += qemu/board-virt.o
 lib-$(CONFIG_SAMSUNG_A105F) += samsung/board-a105f.o

board/nokia/board-essential.c

@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2025, Alexandru Chimac <alex@chimac.ro>
+ */
+#include <board.h>
+#include <string.h>
+#include <drivers/framework.h>
+#include <lib/simplefb.h>
+
+#define TOPRGU_BASE 0x10212000
+#define WDT_MODE_KEY 0x22000000
+#define WDT_MODE_EN (1 << 0)
+
+// Early initialization
+int essential_init(void)
+{
+	unsigned long wdg_reg;
+
+	// Disable watchdog
+	wdg_reg = readl((volatile unsigned int *) TOPRGU_BASE);
+	wdg_reg &= ~WDT_MODE_EN;
+	wdg_reg |= WDT_MODE_KEY;
+	writel(wdg_reg, (void *) TOPRGU_BASE);
+
+	return 0;
+}
+
+#ifdef CONFIG_SIMPLE_FB
+static struct video_info essential_fb = {
+	.format = FB_FORMAT_ARGB8888,
+	.width = 736,
+	.height = 1280,
+	.stride = 4,
+	.address = (void *)0xbf370000
+};
+#endif
+
+int essential_drv(void)
+{
+#ifdef CONFIG_SIMPLE_FB
+	REGISTER_DRIVER("simplefb", simplefb_probe, &essential_fb);
+#endif
+	return 0;
+}
+
+// Late initialization
+int essential_late_init(void)
+{
+	return 0;
+}
+
+struct board_data board_ops = {
+	.name = "nokia-essential",
+	.ops = {
+		.early_init = essential_init,
+		.drivers_init = essential_drv,
+		.late_init = essential_late_init,
+	},
+	.quirks = 0
+};

configs/essential_defconfig

@@ -0,0 +1,5 @@
+CONFIG_MT6735=y
+CONFIG_NOKIA_ESSENTIAL=y
+CONFIG_TEXT_BASE=0x40080000
+CONFIG_PAYLOAD_ENTRY=0x50000000
+CONFIG_RAMDISK_ENTRY=0x44000000

soc/Kconfig

@@ -123,6 +123,13 @@ config QUALCOMM
 		help
 		  Say Y if your device uses Samsung Exynos990 SoC
 
+	config MT6735
+		bool "Support for Mediatek MT6735"
+		default n
+		select MEDIATEK
+		help
+		  Say Y if your device uses Mediatek MT6735 SoC
+
 	config MT6877
 		bool "Support for Mediatek MT6877"
 		default n