esp32h2: chip env support

brownout init fixed

Kconfig

@@ -11,7 +11,6 @@ mainmenu "Espressif IoT Development Framework Configuration"
     config IDF_ENV_FPGA
         # This option is for internal use only
         bool
-        default "y" if IDF_TARGET="esp32h2" # ESP32H2-TODO: IDF-3378
         option env="IDF_ENV_FPGA"
 
     config IDF_TARGET_ARCH_RISCV

components/bootloader_support/src/esp32h2/bootloader_esp32h2.c

@@ -254,12 +254,7 @@ static void bootloader_super_wdt_auto_feed(void)
 
 static inline void bootloader_hardware_init(void)
 {
-    // This check is always included in the bootloader so it can
-    // print the minimum revision error message later in the boot
-    if (bootloader_common_get_chip_revision() < 3) {
-        REGI2C_WRITE_MASK(I2C_ULP, I2C_ULP_IR_FORCE_XPD_IPH, 1);
-        REGI2C_WRITE_MASK(I2C_BIAS, I2C_BIAS_DREG_1P1_PVT, 12);
-    }
+
 }
 
 static inline void bootloader_glitch_reset_disable(void)

components/esp_hw_support/port/esp32h2/private_include/regi2c_bias.h

@@ -14,8 +14,8 @@
  * bootloader_hardware_init function in bootloader_esp32c3.c.
  */
 
-#define I2C_BIAS            0X6A
-#define I2C_BIAS_HOSTID     0
+#define I2C_BIAS           0x6a
+#define I2C_BIAS_HOSTID    0
 
 #define I2C_BIAS_DREG_1P1_PVT 1
 #define I2C_BIAS_DREG_1P1_PVT_MSB 3

components/esp_hw_support/port/esp32h2/private_include/regi2c_lp_bias.h

@@ -14,6 +14,8 @@
  * bus. These definitions are used via macros defined in regi2c_ctrl.h, by
  * rtc_init function in rtc_init.c.
  */
+#define I2C_ULP           0x61
+#define I2C_ULP_HOSTID    0
 
 #define I2C_ULP 0x61
 #define I2C_ULP_HOSTID 0

components/esp_hw_support/port/esp32h2/rtc_sleep.c

@@ -85,6 +85,7 @@ void rtc_sleep_init(rtc_sleep_config_t cfg)
     REG_SET_FIELD(RTC_CNTL_BIAS_CONF_REG, RTC_CNTL_BIAS_SLEEP_DEEP_SLP, RTC_CNTL_BIASSLP_SLEEP_DEFAULT);
     REG_SET_FIELD(RTC_CNTL_BIAS_CONF_REG, RTC_CNTL_PD_CUR_MONITOR, RTC_CNTL_PD_CUR_MONITOR_DEFAULT);
     REG_SET_FIELD(RTC_CNTL_BIAS_CONF_REG, RTC_CNTL_PD_CUR_DEEP_SLP, RTC_CNTL_PD_CUR_SLEEP_DEFAULT);
+    // ESP32-H2 TO-DO: IDF-3693
     if (cfg.deep_slp) {
         REGI2C_WRITE_MASK(I2C_ULP, I2C_ULP_IR_FORCE_XPD_CK, 0);
         CLEAR_PERI_REG_MASK(RTC_CNTL_REG, RTC_CNTL_REGULATOR_FORCE_PU);

components/esp_system/port/soc/esp32h2/clk.c

@@ -82,7 +82,7 @@ static const char *TAG = "clk";
     }
     rtc_init(cfg);
 
-    assert(rtc_clk_xtal_freq_get() == RTC_XTAL_FREQ_40M);
+    assert(rtc_clk_xtal_freq_get() == RTC_XTAL_FREQ_32M);
 
     rtc_clk_fast_freq_set(RTC_FAST_FREQ_8M);
 #endif
@@ -177,7 +177,7 @@ static void select_rtc_slow_clk(slow_clk_sel_t slow_clk)
                 }
             }
         } else if (rtc_slow_freq == RTC_SLOW_FREQ_8MD256) {
-            rtc_clk_8m_enable(true, true);
+            // rtc_clk_8m_enable(true, true);
         }
         rtc_clk_slow_freq_set(rtc_slow_freq);
 

components/esp_system/startup.c

@@ -268,6 +268,7 @@ static void do_core_init(void)
     CONFIG_ESP32S3_BROWNOUT_DET || \
     CONFIG_ESP32C3_BROWNOUT_DET || \
     CONFIG_ESP32H2_BROWNOUT_DET
+
     // [refactor-todo] leads to call chain rtc_is_register (driver) -> esp_intr_alloc (esp32/esp32s2) ->
     // malloc (newlib) -> heap_caps_malloc (heap), so heap must be at least initialized
     esp_brownout_init();

components/soc/esp32h2/include/soc/soc.h

@@ -228,10 +228,10 @@
 #if CONFIG_IDF_ENV_FPGA
 #define  APB_CLK_FREQ                                ( 32*1000000 )
 #else
-#define  APB_CLK_FREQ                                ( 80*1000000 )
+#define  APB_CLK_FREQ                                ( 96*1000000 )
 #endif
 #define  REF_CLK_FREQ                                ( 1000000 )
-#define  RTC_CLK_FREQ                                (20*1000000)
+#define  RTC_CLK_FREQ                                (17.5*1000000)
 #define  XTAL_CLK_FREQ                               (32*1000000)
 #define  UART_CLK_FREQ                               APB_CLK_FREQ
 #define  WDT_CLK_FREQ                                APB_CLK_FREQ