1 files changed, 41 insertions, 0 deletions
diff --git a/board/renesas/rcar-common/v3-common.c b/board/renesas/rcar-common/v3-common.c
new file mode 100644
index 0000000000..7c6202ea49
--- /dev/null
+++ b/board/renesas/rcar-common/v3-common.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017-2023 Marek Vasut <marek.vasut+renesas@mailbox.org>
+ */
+
+#include <common.h>
+#include <clock_legacy.h>
+#include <asm/io.h>
+
+#define CPGWPR  0xE6150900
+#define CPGWPCR	0xE6150904
+
+/* PLL */
+#define PLL0CR		0xE61500D8
+#define PLL0_STC_MASK	0x7F000000
+#define PLL0_STC_OFFSET	24
+
+#define CLK2MHZ(clk)	(clk / 1000 / 1000)
+void s_init(void)
+{
+	struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE;
+	struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE;
+	u32 stc;
+
+	/* Watchdog init */
+	writel(0xA5A5A500, &rwdt->rwtcsra);
+	writel(0xA5A5A500, &swdt->swtcsra);
+
+	/* CPU frequency setting. Set to 0.8GHz */
+	stc = ((800 / CLK2MHZ(get_board_sys_clk())) - 1) << PLL0_STC_OFFSET;
+	clrsetbits_le32(PLL0CR, PLL0_STC_MASK, stc);
+}
+
+int board_early_init_f(void)
+{
+	/* Unlock CPG access */
+	writel(0xA5A5FFFF, CPGWPR);
+	writel(0x5A5A0000, CPGWPCR);
+
+	return 0;
+}