soc: esp32c6: Kconfig and .ld updates, DTS and comments fix

Kconfig, .ld and comments fixing
Fixed address of UART1, WDT and RTC timer disabled by default

Signed-off-by: Raffael Rostagno <raffael.rostagno@espressif.com>

arch/Kconfig

@@ -110,7 +110,7 @@ config RISCV
 	bool
 	select ARCH_IS_SET
 	select ARCH_SUPPORTS_COREDUMP
-	select ARCH_SUPPORTS_ROM_START if !SOC_SERIES_ESP32C3
+	select ARCH_SUPPORTS_ROM_START if !SOC_FAMILY_ESPRESSIF_ESP32
 	select ARCH_HAS_CODE_DATA_RELOCATION
 	select ARCH_HAS_THREAD_LOCAL_STORAGE
 	select ARCH_HAS_STACKWALK

dts/riscv/espressif/esp32c6/esp32c6_common.dtsi

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+ * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -25,7 +25,7 @@
 		cpu0: cpu@0 {
 			device_type = "cpu";
 			compatible = "espressif,riscv";
-			riscv,isa = "rv32imc_zicsr";
+			riscv,isa = "rv32imac_zicsr";
 			reg = <0>;
 			clock-source = <ESP32_CPU_CLK_SRC_PLL>;
 			clock-frequency = <DT_FREQ_M(160)>;
@@ -82,7 +82,7 @@
 			clocks = <&rtc ESP32_MODULE_MAX>;
 			interrupts = <LP_RTC_TIMER_INTR_SOURCE>;
 			interrupt-parent = <&intc>;
-			status = "okay";
+			status = "disabled";
 		};
 
 		spi2: spi@60081000 {
@@ -96,18 +96,18 @@
 			status = "disabled";
 		};
 
-		wdt0: watchdog@6001f048  {
+		wdt0: watchdog@60008048  {
 			compatible = "espressif,esp32-watchdog";
-			reg = <0x6001f048 0x20>;
+			reg = <0x60008048 0x20>;
 			interrupts = <TG0_WDT_LEVEL_INTR_SOURCE>;
 			interrupt-parent = <&intc>;
 			clocks = <&rtc ESP32_TIMG0_MODULE>;
 			status = "disabled";
 		};
 
-		wdt1: watchdog@60020048 {
+		wdt1: watchdog@60009048 {
 			compatible = "espressif,esp32-watchdog";
-			reg = <0x60020048 0x20>;
+			reg = <0x60009048 0x20>;
 			interrupts = <TG1_WDT_LEVEL_INTR_SOURCE>;
 			interrupt-parent = <&intc>;
 			clocks = <&rtc ESP32_TIMG1_MODULE>;
@@ -147,9 +147,9 @@
 			clocks = <&rtc ESP32_UART0_MODULE>;
 		};
 
-		uart1: uart@60010000 {
+		uart1: uart@60001000 {
 			compatible = "espressif,esp32-uart";
-			reg = <0x60010000 DT_SIZE_K(4)>;
+			reg = <0x60001000 DT_SIZE_K(4)>;
 			status = "disabled";
 			interrupts = <UART1_INTR_SOURCE>;
 			interrupt-parent = <&intc>;

soc/espressif/esp32c6/Kconfig

@@ -1,4 +1,4 @@
-# Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
 # SPDX-License-Identifier: Apache-2.0
 
 config SOC_SERIES_ESP32C6
@@ -8,6 +8,7 @@ config SOC_SERIES_ESP32C6
 	select CLOCK_CONTROL
 	select PINCTRL
 	select RISCV_ISA_RV32I
+	select RISCV_ISA_EXT_A
 	select RISCV_ISA_EXT_M
 	select RISCV_ISA_EXT_C
 	select RISCV_ISA_EXT_ZICSR
@@ -18,10 +19,6 @@ config SOC_SERIES_ESP32C6
 
 if SOC_SERIES_ESP32C6
 
-config IDF_TARGET_ESP32C6
-	bool "ESP32C6 as target board"
-	default y
-
 config ESP32_PHY_MAX_WIFI_TX_POWER
 	int "Max WiFi TX power (dBm)"
 	range 10 20
@@ -37,7 +34,6 @@ config ESP32_PHY_MAX_TX_POWER
 config MAC_BB_PD
 	bool "Power down MAC and baseband of Wi-Fi and Bluetooth when PHY is disabled"
 	depends on SOC_SERIES_ESP32C6 && TICKLESS_KERNEL
-	default n
 	help
 	  If enabled, the MAC and baseband of Wi-Fi and Bluetooth will be powered
 	  down when PHY is disabled. Enabling this setting reduces power consumption

soc/espressif/esp32c6/Kconfig.defconfig

@@ -1,6 +1,6 @@
-# ESP32C3 board configuration
+# ESP32C6 board configuration
 
-# Copyright (c) 2021 Espressif Systems (Shanghai) Co., Ltd.
+# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
 # SPDX-License-Identifier: Apache-2.0
 
 if SOC_SERIES_ESP32C6

soc/espressif/esp32c6/Kconfig.soc

@@ -1,4 +1,4 @@
-# Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
 # SPDX-License-Identifier: Apache-2.0
 
 config SOC_SERIES_ESP32C6
@@ -21,9 +21,8 @@ config SOC_SERIES
 	default "esp32c6" if SOC_SERIES_ESP32C6
 
 config SOC
-	default "esp32c6" if SOC_SERIES_ESP32C6
+	default "esp32c6" if SOC_ESP32C6
 
 config SOC_PART_NUMBER
 	default "ESP32_C6_WROOM_1U_N4" if SOC_ESP32_C6_WROOM_1U_N4
 	default "ESP32_C6_WROOM_1U_N8" if SOC_ESP32_C6_WROOM_1U_N8
-	default "ESP32C6" if SOC_ESP32C6

soc/espressif/esp32c6/default.ld

@@ -610,8 +610,6 @@ SECTIONS
     __bss_start = ABSOLUTE(.);
     _bss_start = ABSOLUTE(.);
 
-    /*  bluetooth library requires this symbol to be defined */
-    _btdm_bss_start = ABSOLUTE(.);
     *libbtdm_app.a:(.bss .bss.* COMMON)
     . = ALIGN (4);
     _btdm_bss_end = ABSOLUTE(.);
@@ -662,6 +660,7 @@ SECTIONS
     _instruction_reserved_start = ABSOLUTE(.);
     _text_start = ABSOLUTE(.);
     _instruction_reserved_start = ABSOLUTE(.);
+    __text_region_start = ABSOLUTE(.);
 
 #if !defined(CONFIG_ESP32_WIFI_IRAM_OPT)
     *libnet80211.a:( .wifi0iram  .wifi0iram.* .wifislpiram .wifislpiram.*)
@@ -692,6 +691,7 @@ SECTIONS
     _instruction_reserved_end = ABSOLUTE(.);
     _text_end = ABSOLUTE(.);
     _instruction_reserved_end = ABSOLUTE(.);
+    __text_region_end = ABSOLUTE(.);
     _etext = .;
 
   } GROUP_DATA_LINK_IN(CACHED_REGION, ROMABLE_REGION)
@@ -701,17 +701,17 @@ SECTIONS
   /* --- START OF .rodata --- */
 
   /* Align next section to 64k to allow mapping */
-  .flash.align_rodata (NOLOAD) :
-  {
-    /* Subsequent segment lma and vma align */
-    . = ALIGN(CACHE_ALIGN);
-  } GROUP_DATA_LINK_IN(CACHED_REGION, ROMABLE_REGION)
-
   .flash.align_rom (NOLOAD) :
   {
     . = ALIGN(CACHE_ALIGN);
   } GROUP_LINK_IN(ROMABLE_REGION)
 
+  .flash.align_rodata (NOLOAD) :
+  {
+    /* Subsequent segment lma and vma align */
+    . = ALIGN(CACHE_ALIGN);
+  } GROUP_LINK_IN(CACHED_REGION)
+
   /* Symbols used during the application memory mapping */
   _image_drom_start = LOADADDR(.flash.rodata);
   _image_drom_size = _image_rodata_end -  _image_rodata_start;

soc/espressif/esp32c6/mcuboot.ld

@@ -101,7 +101,7 @@ SECTIONS
     *(.iram1 .iram1.*)
     *(.iram0.literal .iram.literal .iram.text.literal .iram0.text .iram.text)
 
-    /* C3 memprot requires 512 B alignment for split lines */
+    /* C6 memprot requires 512 B alignment for split lines */
     . = ALIGN (16);
     _init_end = ABSOLUTE(.);
     . = ALIGN(16);