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-rw-r--r--drivers/soc/renesas/rcar-gen4-sysc.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/soc/renesas/rcar-gen4-sysc.h b/drivers/soc/renesas/rcar-gen4-sysc.h
new file mode 100644
index 000000000..388cfa8f8
--- /dev/null
+++ b/drivers/soc/renesas/rcar-gen4-sysc.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * R-Car Gen4 System Controller
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+#ifndef __SOC_RENESAS_RCAR_GEN4_SYSC_H__
+#define __SOC_RENESAS_RCAR_GEN4_SYSC_H__
+
+#include <linux/types.h>
+
+/*
+ * Power Domain flags
+ */
+#define PD_CPU BIT(0) /* Area contains main CPU core */
+#define PD_SCU BIT(1) /* Area contains SCU and L2 cache */
+#define PD_NO_CR BIT(2) /* Area lacks PWR{ON,OFF}CR registers */
+
+#define PD_CPU_NOCR (PD_CPU | PD_NO_CR) /* CPU area lacks CR */
+#define PD_ALWAYS_ON PD_NO_CR /* Always-on area */
+
+/*
+ * Description of a Power Area
+ */
+struct rcar_gen4_sysc_area {
+ const char *name;
+ u8 pdr; /* PDRn */
+ s8 parent; /* -1 if none */
+ u8 flags; /* See PD_* */
+};
+
+/*
+ * SoC-specific Power Area Description
+ */
+struct rcar_gen4_sysc_info {
+ const struct rcar_gen4_sysc_area *areas;
+ unsigned int num_areas;
+};
+
+extern const struct rcar_gen4_sysc_info r8a779a0_sysc_info;
+extern const struct rcar_gen4_sysc_info r8a779f0_sysc_info;
+extern const struct rcar_gen4_sysc_info r8a779g0_sysc_info;
+
+#endif /* __SOC_RENESAS_RCAR_GEN4_SYSC_H__ */