samples: fs: littlefs: add sample on stm32h747i-disco board

This adds the required conf and dts overlays required for the application on stm32h747i-disco board. Also moved CONFIG_SDMMC_STM32_HWFC option from prj_blk.conf to nucleo_h743zi_blk.conf as that is STM specific option. Build the application as west build -p always -b stm32h747i_disco_m7 \ samples/subsys/fs/littlefs/ -- \ -DOVERLAY_CONFIG=boards/stm32h747i_disco_m7.conf -DCONF_FILE=prj_blk.conf Signed-off-by: Murali Karicheri <[email protected]>
zephyrproject-rtos · Nov 3, 2023 · b235372 · b235372
1 parent 396e1ce
commit b235372
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diff --git a/boards/arm/stm32h747i_disco/stm32h747i_disco_m7.dts b/boards/arm/stm32h747i_disco/stm32h747i_disco_m7.dts
@@ -78,6 +78,16 @@
 	status = "okay";
 };
 
+&pll2 {
+	div-m = <5>;
+	mul-n = <96>;
+	div-p = <2>;
+	div-q = <4>;
+	div-r = <10>;
+	clocks = <&clk_hse>;  /* Assuming 25MHz HSE */
+	status = "okay";
+};
+
 &rcc {
 	clocks = <&pll>;
 	clock-frequency = <DT_FREQ_M(400)>;
@@ -202,8 +212,12 @@ zephyr_udc0: &usbotg_hs {
 
 &sdmmc1 {
 	status = "okay";
+	clocks = <&rcc STM32_CLOCK_BUS_AHB3 0x00010000>,
+			<&rcc STM32_SRC_PLL2_R SDMMC_SEL(1)>;
 	pinctrl-0 = <&sdmmc1_d0_pc8 &sdmmc1_d1_pc9
 			&sdmmc1_d2_pc10 &sdmmc1_d3_pc11
+			&sdmmc1_d4_pb8 &sdmmc1_d5_pb9
+			&sdmmc1_d6_pc6 &sdmmc1_d7_pc7
 			&sdmmc1_ck_pc12 &sdmmc1_cmd_pd2>;
 	pinctrl-names = "default";
 	cd-gpios = <&gpioi 8 GPIO_ACTIVE_LOW>;

diff --git a/samples/subsys/fs/littlefs/boards/nucleo_h743zi_blk.conf b/samples/subsys/fs/littlefs/boards/nucleo_h743zi_blk.conf
@@ -7,3 +7,4 @@ CONFIG_MAIN_STACK_SIZE=2048
 CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=8192
 
 CONFIG_FS_LITTLEFS_FC_HEAP_SIZE=8192
+CONFIG_SDMMC_STM32_HWFC=y
diff --git a/samples/subsys/fs/littlefs/boards/stm32h747i_disco_m7.conf b/samples/subsys/fs/littlefs/boards/stm32h747i_disco_m7.conf
@@ -0,0 +1,3 @@
+CONFIG_SDMMC_STM32_HWFC=y
+CONFIG_FS_LITTLEFS_FC_HEAP_SIZE=2048
+CONFIG_MAIN_STACK_SIZE=2048
diff --git a/samples/subsys/fs/littlefs/boards/stm32h747i_disco_m7.overlay b/samples/subsys/fs/littlefs/boards/stm32h747i_disco_m7.overlay
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2023 S&C Electric Company <www.sandc.com>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/delete-node/ &storage_partition;
+
+/ {
+	fstab {
+		compatible = "zephyr,fstab";
+		lfs1: lfs1 {
+			compatible = "zephyr,fstab,littlefs";
+			read-size = <512>;
+			prog-size = <512>;
+			cache-size = <512>;
+			lookahead-size = <4096>;
+			block-cycles = <512>;
+			partition = <&storage_partition>;
+			mount-point = "/lfsemmc";
+		};
+	};
+};
+
+&sdmmc1 {
+        sdmmc {
+		compatible = "zephyr,sdmmc-disk";
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			storage_partition: partition@0 {
+				label = "storage";
+				reg = <0x0 DT_SIZE_M(2048)>;
+			};
+		};
+	};
+};
diff --git a/samples/subsys/fs/littlefs/prj_blk.conf b/samples/subsys/fs/littlefs/prj_blk.conf
@@ -19,4 +19,3 @@ CONFIG_FS_LITTLEFS_BLK_DEV=y
 CONFIG_APP_LITTLEFS_STORAGE_BLK_SDMMC=y
 
 CONFIG_NOCACHE_MEMORY=y
-CONFIG_SDMMC_STM32_HWFC=y
diff --git a/samples/subsys/fs/littlefs/sample.yaml b/samples/subsys/fs/littlefs/sample.yaml
@@ -33,3 +33,9 @@ tests:
     extra_args:
       - OVERLAY_CONFIG=boards/nrf52840dk_nrf52840_qspi.conf
       - DTC_OVERLAY_FILE=boards/nrf52840dk_nrf52840_qspi.overlay
+  sample.filesystem.littlefs.stm32h747i_disco_m7_sdmmc:
+    build_only: true
+    platform_allow: stm32h747i_disco_m7
+    extra_args:
+      - OVERLAY_CONFIG=boards/stm32h747i_disco_m7.conf
+      - CONF_FILE=prj_blk.conf