Merge git://git.denx.de/u-boot-rockchip

1 files changed, 65 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-rockchip/clock.h b/arch/arm/include/asm/arch-rockchip/clock.h
new file mode 100644
index 0000000..8a0376c
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/clock.h
@@ -0,0 +1,65 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef _ASM_ARCH_CLOCK_H
+#define _ASM_ARCH_CLOCK_H
+
+/* define pll mode */
+#define RKCLK_PLL_MODE_SLOW		0
+#define RKCLK_PLL_MODE_NORMAL		1
+
+enum {
+	ROCKCHIP_SYSCON_NOC,
+	ROCKCHIP_SYSCON_GRF,
+	ROCKCHIP_SYSCON_SGRF,
+	ROCKCHIP_SYSCON_PMU,
+};
+
+/* Standard Rockchip clock numbers */
+enum rk_clk_id {
+	CLK_OSC,
+	CLK_ARM,
+	CLK_DDR,
+	CLK_CODEC,
+	CLK_GENERAL,
+	CLK_NEW,
+
+	CLK_COUNT,
+};
+
+static inline int rk_pll_id(enum rk_clk_id clk_id)
+{
+	return clk_id - 1;
+}
+
+/**
+ * clk_get_divisor() - Calculate the required clock divisior
+ *
+ * Given an input rate and a required output_rate, calculate the Rockchip
+ * divisor needed to achieve this.
+ *
+ * @input_rate:		Input clock rate in Hz
+ * @output_rate:	Output clock rate in Hz
+ * @return divisor register value to use
+ */
+static inline u32 clk_get_divisor(ulong input_rate, uint output_rate)
+{
+	uint clk_div;
+
+	clk_div = input_rate / output_rate;
+	clk_div = (clk_div + 1) & 0xfffe;
+
+	return clk_div;
+}
+
+/**
+ * rockchip_get_cru() - get a pointer to the clock/reset unit registers
+ *
+ * @return pointer to registers, or -ve error on error
+ */
+void *rockchip_get_cru(void);
+
+#endif