dts: arm: st: f4: add definition for backup SRAM

gmarull · nashif · commit 98262aff919f · 2021-02-15T08:04:24.000-05:00
Add DT definition for the backup SRAM. Only added to F4 models
supporting it.

Signed-off-by: Gerard Marull-Paretas &lt;gerard@teslabs.com&gt;
diff --git a/dts/arm/st/f4/stm32f405.dtsi b/dts/arm/st/f4/stm32f405.dtsi
@@ -235,6 +235,14 @@
 			status = "disabled";
 			label = "RNG";
 		};
+
+		backup_sram: memory@40024000 {
+			compatible = "st,stm32-backup-sram";
+			reg = <0x40024000 DT_SIZE_K(4)>;
+			clocks = <&rcc STM32_CLOCK_BUS_AHB1 0x00040000>;
+			label = "BACKUP_SRAM";
+			status = "disabled";
+		};
 	};
 
 	otghs_fs_phy: otghs_fs_phy {
diff --git a/dts/arm/st/f4/stm32f446.dtsi b/dts/arm/st/f4/stm32f446.dtsi
@@ -43,6 +43,14 @@
 			status = "disabled";
 			label= "OTGHS";
 		};
+
+		backup_sram: memory@40024000 {
+			compatible = "st,stm32-backup-sram";
+			reg = <0x40024000 DT_SIZE_K(4)>;
+			clocks = <&rcc STM32_CLOCK_BUS_AHB1 0x00040000>;
+			label = "BACKUP_SRAM";
+			status = "disabled";
+		};
 	};
 
 	otghs_fs_phy: otghs_fs_phy {
