GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2011-2015 Panasonic Corporation
+ * Copyright (C) 2015-2016 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ */
+
+#include <linux/io.h>
+
+#include "../init.h"
+#include "../sc-regs.h"
+
+void uniphier_ld4_clk_init(void)
+{
+	u32 tmp;
+
+	/* deassert reset */
+	tmp = readl(sc_base + SC_RSTCTRL);
+#ifdef CONFIG_NAND_DENALI
+	tmp |= SC_RSTCTRL_NRST_NAND;
+#endif
+	writel(tmp, sc_base + SC_RSTCTRL);
+	readl(sc_base + SC_RSTCTRL); /* dummy read */
+
+	/* provide clocks */
+	tmp = readl(sc_base + SC_CLKCTRL);
+#ifdef CONFIG_NAND_DENALI
+	tmp |= SC_CLKCTRL_CEN_NAND;
+#endif
+	writel(tmp, sc_base + SC_CLKCTRL);
+	readl(sc_base + SC_CLKCTRL); /* dummy read */
+}