feat(sdm): add driver support for esp32-h4

components/soc/esp32h4/sdm_periph.c

@@ -0,0 +1,58 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "soc/sdm_periph.h"
+#include "soc/gpio_sig_map.h"
+#include "soc/gpio_ext_reg.h"
+
+const soc_sdm_signal_desc_t soc_sdm_signals[1] = {
+    [0] = {
+        .module_name = "SDM0",
+        .channels = {
+            [0] = {
+                .sig_id_matrix = GPIO_SD0_OUT_IDX
+            },
+            [1] = {
+                .sig_id_matrix = GPIO_SD1_OUT_IDX
+            },
+            [2] = {
+                .sig_id_matrix = GPIO_SD2_OUT_IDX
+            },
+            [3] = {
+                .sig_id_matrix = GPIO_SD3_OUT_IDX
+            }
+        }
+    }
+};
+
+/**
+ * @brief Registers in retention context:
+ *        GPIO_EXT_SIGMADELTA[x]_REG
+ *        GPIO_EXT_SIGMADELTA_MISC_REG
+ */
+#define GPIO_EXT_RETENTION_REGS_CNT 5
+#define GPIO_EXT_RETENTION_REGS_BASE (DR_REG_GPIO_EXT_BASE + 0x4)
+static const uint32_t gpio_ext_regs_map[4] = {0x1f, 0x0, 0x0, 0x0};
+static const regdma_entries_config_t gpio_ext_regdma_entries[] = {
+    // backup stage: save configuration and status registers
+    // restore stage: restore the configuration and status registers
+    [0] = {
+        .config = REGDMA_LINK_ADDR_MAP_INIT(REGDMA_SDM_LINK(0x00),
+                                            GPIO_EXT_RETENTION_REGS_BASE, GPIO_EXT_RETENTION_REGS_BASE,
+                                            GPIO_EXT_RETENTION_REGS_CNT, 0, 0,
+                                            gpio_ext_regs_map[0], gpio_ext_regs_map[1],
+                                            gpio_ext_regs_map[2], gpio_ext_regs_map[3]),
+        .owner = ENTRY(0) | ENTRY(2),
+    },
+};
+
+const soc_sdm_retention_desc_t soc_sdm_retention_infos[1] = {
+    [0] = {
+        .module = SLEEP_RETENTION_MODULE_SDM0,
+        .regdma_entry_array = gpio_ext_regdma_entries,
+        .array_size = ARRAY_SIZE(gpio_ext_regdma_entries)
+    }
+};