dm: Add Hardware Spinlock class
This is uclass for Hardware Spinlocks.
It implements two mandatory operations: lock and unlock
and one optional relax operation.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 6722e18..12d39d8 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -742,6 +742,10 @@
pinctrl {
compatible = "sandbox,pinctrl";
};
+
+ hwspinlock@0 {
+ compatible = "sandbox,hwspinlock";
+ };
};
#include "sandbox_pmic.dtsi"
diff --git a/arch/sandbox/include/asm/state.h b/arch/sandbox/include/asm/state.h
index 5a14485..c724827 100644
--- a/arch/sandbox/include/asm/state.h
+++ b/arch/sandbox/include/asm/state.h
@@ -101,6 +101,7 @@
ulong next_tag; /* Next address tag to allocate */
struct list_head mapmem_head; /* struct sandbox_mapmem_entry */
+ bool hwspinlock; /* Hardware Spinlock status */
};
/* Minimum space we guarantee in the state FDT when calling read/write*/