[PATCH 6/9] ARM: i.MX: Add minimal imx7-ccm-regs.h

[Andrey Smirnov]

Add minimal imx7-ccm-regs.h that contains bare minimum definitions
needed for early UART setup.

Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
 arch/arm/mach-imx/include/mach/imx7-ccm-regs.h | 32 ++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 arch/arm/mach-imx/include/mach/imx7-ccm-regs.h

diff --git a/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h b/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h
new file mode 100644
index 000000000..a4217cca5
--- /dev/null
+++ b/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h
@@ -0,0 +1,32 @@
+#ifndef __MACH_IMX7_CCM_REGS_H__
+#define __MACH_IMX7_CCM_REGS_H__
+
+/* 0 <= n <= 190 */
+#define CCM_CCGRn_SET(n)	(0x4004 + 16 * (n))
+#define CCM_CCGRn_CLR(n)	(0x4008 + 16 * (n))
+
+#define CCM_CCGR_UART1		148
+
+#define CCM_CCGR_SETTINGn(n, s)  ((s) << ((n) * 4))
+#define CCM_CCGR_SETTINGn_NOT_NEEDED(n)		CCM_CCGR_SETTINGn(n, 0b00)
+#define CCM_CCGR_SETTINGn_NEEDED_RUN(n)		CCM_CCGR_SETTINGn(n, 0b01)
+#define CCM_CCGR_SETTINGn_NEEDED_RUN_WAIT(n)	CCM_CCGR_SETTINGn(n, 0b10)
+#define CCM_CCGR_SETTINGn_NEEDED(n)		CCM_CCGR_SETTINGn(n, 0b11)
+
+/* 0 <= n <= 120 */
+#define CCM_TARGET_ROOTn(n)	(0x8000 + 128 * (n))
+
+#define CCM_TARGET_ROOTn_MUX(x)		((x) << 24)
+#define CCM_TARGET_ROOTn_ENABLE		BIT(28)
+
+#define CLOCK_ROOT_INDEX(x)	(((x) - 0x8000) / 128)
+
+/*
+ * Taken from "Table 5-11. Clock Root Table" from i.MX7 Dual Processor
+ * Reference Manual
+ */
+#define UART1_CLK_ROOT		CLOCK_ROOT_INDEX(0xaf80)
+#define UART1_CLK_ROOT__OSC_24M CCM_TARGET_ROOTn_MUX(0b000)
+
+
+#endif
-- 
2.13.3