From a89abd5eac32e9c81cf150d1cdb9529d03fd411c Mon Sep 17 00:00:00 2001
From: Armando <douyiwen@espressif.com>
Date: Wed, 6 Nov 2024 12:10:58 +0800
Subject: [PATCH] example(sdmmc): support hs and uhs1 sdr50/ddr50

---
 .../storage/sd_card/sdmmc/main/Kconfig.projbuild | 16 ++++++++++++++++
 .../sd_card/sdmmc/main/sd_card_example_main.c    | 14 ++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/examples/storage/sd_card/sdmmc/main/Kconfig.projbuild b/examples/storage/sd_card/sdmmc/main/Kconfig.projbuild
index 70449a8e39..d85180bbbc 100644
--- a/examples/storage/sd_card/sdmmc/main/Kconfig.projbuild
+++ b/examples/storage/sd_card/sdmmc/main/Kconfig.projbuild
@@ -28,6 +28,22 @@ menu "SD/MMC Example Configuration"
             bool "1 line (D0)"
     endchoice
 
+    choice EXAMPLE_SDMMC_SPEED_MODE
+        prompt "SD/MMC speed mode"
+        default EXAMPLE_SDMMC_SPEED_DS
+
+        config EXAMPLE_SDMMC_SPEED_DS
+            bool "Default Speed"
+        config EXAMPLE_SDMMC_SPEED_HS
+            bool "High Speed"
+        config EXAMPLE_SDMMC_SPEED_UHS_I_SDR50
+            bool "UHS-I SDR50 (100 MHz, 50 MB/s)"
+            depends on SOC_SDMMC_UHS_I_SUPPORTED
+        config EXAMPLE_SDMMC_SPEED_UHS_I_DDR50
+            bool "UHS-I DDR50 (50 MHz, 50 MB/s)"
+            depends on SOC_SDMMC_UHS_I_SUPPORTED
+    endchoice
+
     if SOC_SDMMC_USE_GPIO_MATRIX
 
         config EXAMPLE_PIN_CMD
diff --git a/examples/storage/sd_card/sdmmc/main/sd_card_example_main.c b/examples/storage/sd_card/sdmmc/main/sd_card_example_main.c
index 6821d05fb2..9946e6d947 100644
--- a/examples/storage/sd_card/sdmmc/main/sd_card_example_main.c
+++ b/examples/storage/sd_card/sdmmc/main/sd_card_example_main.c
@@ -24,6 +24,7 @@
 static const char *TAG = "example";
 
 #define MOUNT_POINT "/sdcard"
+#define EXAMPLE_IS_UHS1    (CONFIG_EXAMPLE_SDMMC_SPEED_UHS_I_SDR50 || CONFIG_EXAMPLE_SDMMC_SPEED_UHS_I_DDR50)
 
 #ifdef CONFIG_EXAMPLE_DEBUG_PIN_CONNECTIONS
 const char* names[] = {"CLK", "CMD", "D0", "D1", "D2", "D3"};
@@ -128,6 +129,16 @@ void app_main(void)
     // For setting a specific frequency, use host.max_freq_khz (range 400kHz - 40MHz for SDMMC)
     // Example: for fixed frequency of 10MHz, use host.max_freq_khz = 10000;
     sdmmc_host_t host = SDMMC_HOST_DEFAULT();
+#if CONFIG_EXAMPLE_SDMMC_SPEED_HS
+    host.max_freq_khz = SDMMC_FREQ_HIGHSPEED;
+#elif CONFIG_EXAMPLE_SDMMC_SPEED_UHS_I_SDR50
+    host.slot = SDMMC_HOST_SLOT_0;
+    host.max_freq_khz = SDMMC_FREQ_SDR50;
+    host.flags &= ~SDMMC_HOST_FLAG_DDR;
+#elif CONFIG_EXAMPLE_SDMMC_SPEED_UHS_I_DDR50
+    host.slot = SDMMC_HOST_SLOT_0;
+    host.max_freq_khz = SDMMC_FREQ_DDR50;
+#endif
 
     // For SoCs where the SD power can be supplied both via an internal or external (e.g. on-board LDO) power supply.
     // When using specific IO pins (which can be used for ultra high-speed SDMMC) to connect to the SD card
@@ -149,6 +160,9 @@ void app_main(void)
     // This initializes the slot without card detect (CD) and write protect (WP) signals.
     // Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
     sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
+#if EXAMPLE_IS_UHS1
+    slot_config.flags |= SDMMC_SLOT_FLAG_UHS1;
+#endif
 
     // Set bus width to use:
 #ifdef CONFIG_EXAMPLE_SDMMC_BUS_WIDTH_4