clk: Add Actions Semi OWL clock support

This commit adds Actions Semi OWL family base clock and S900 SoC
specific clock support. For S900 peripheral clock support, only UART
clock has been added for now.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

2 files changed, 121 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-owl/clk_s900.h b/arch/arm/include/asm/arch-owl/clk_s900.h
new file mode 100644
index 00000000000..88e88f77f82
--- /dev/null
+++ b/arch/arm/include/asm/arch-owl/clk_s900.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Actions Semi S900 Clock Definitions
+ *
+ * Copyright (C) 2015 Actions Semi Co., Ltd.
+ * Copyright (C) 2018 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+ *
+ */
+
+#ifndef _OWL_CLK_S900_H_
+#define _OWL_CLK_S900_H_
+
+#include <clk-uclass.h>
+
+struct owl_clk_priv {
+	phys_addr_t base;
+};
+
+/* BUSCLK register definitions */
+#define CMU_PDBGDIV_8		7
+#define CMU_PDBGDIV_SHIFT	26
+#define CMU_PDBGDIV_DIV		(CMU_PDBGDIV_8 << CMU_PDBGDIV_SHIFT)
+#define CMU_PERDIV_8		7
+#define CMU_PERDIV_SHIFT	20
+#define CMU_PERDIV_DIV		(CMU_PERDIV_8 << CMU_PERDIV_SHIFT)
+#define CMU_NOCDIV_2		1
+#define CMU_NOCDIV_SHIFT	19
+#define CMU_NOCDIV_DIV		(CMU_NOCDIV_2 << CMU_NOCDIV_SHIFT)
+#define CMU_DMMCLK_SRC_APLL	2
+#define CMU_DMMCLK_SRC_SHIFT	10
+#define CMU_DMMCLK_SRC		(CMU_DMMCLK_SRC_APLL << CMU_DMMCLK_SRC_SHIFT)
+#define CMU_APBCLK_DIV		BIT(8)
+#define CMU_NOCCLK_SRC		BIT(7)
+#define CMU_AHBCLK_DIV		BIT(4)
+#define CMU_CORECLK_MASK	3
+#define CMU_CORECLK_CPLL	BIT(1)
+#define CMU_CORECLK_HOSC	BIT(0)
+
+/* COREPLL register definitions */
+#define CMU_COREPLL_EN		BIT(9)
+#define CMU_COREPLL_HOSC_EN	BIT(8)
+#define CMU_COREPLL_OUT		(1104 / 24)
+
+/* DEVPLL register definitions */
+#define CMU_DEVPLL_CLK		BIT(12)
+#define CMU_DEVPLL_EN		BIT(8)
+#define CMU_DEVPLL_OUT		(660 / 6)
+
+/* UARTCLK register definitions */
+#define CMU_UARTCLK_SRC_DEVPLL	BIT(16)
+
+/* DEVCLKEN1 register definitions */
+#define CMU_DEVCLKEN1_UART5	BIT(21)
+
+#define PLL_STABILITY_WAIT_US	50
+
+#endif
diff --git a/arch/arm/include/asm/arch-owl/regs_s900.h b/arch/arm/include/asm/arch-owl/regs_s900.h
new file mode 100644
index 00000000000..9e9106ddaab
--- /dev/null
+++ b/arch/arm/include/asm/arch-owl/regs_s900.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Actions Semi S900 Register Definitions
+ *
+ * Copyright (C) 2015 Actions Semi Co., Ltd.
+ * Copyright (C) 2018 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+ *
+ */
+
+#ifndef _OWL_REGS_S900_H_
+#define _OWL_REGS_S900_H_
+
+/* CMU registers */
+#define CMU_COREPLL				(0x0000)
+#define CMU_DEVPLL				(0x0004)
+#define CMU_DDRPLL				(0x0008)
+#define CMU_NANDPLL				(0x000C)
+#define CMU_DISPLAYPLL				(0x0010)
+#define CMU_AUDIOPLL				(0x0014)
+#define CMU_TVOUTPLL				(0x0018)
+#define CMU_BUSCLK				(0x001C)
+#define CMU_SENSORCLK				(0x0020)
+#define CMU_LCDCLK				(0x0024)
+#define CMU_DSICLK				(0x0028)
+#define CMU_CSICLK				(0x002C)
+#define CMU_DECLK				(0x0030)
+#define CMU_BISPCLK				(0x0034)
+#define CMU_IMXCLK				(0x0038)
+#define CMU_HDECLK				(0x003C)
+#define CMU_VDECLK				(0x0040)
+#define CMU_VCECLK				(0x0044)
+#define CMU_NANDCCLK				(0x004C)
+#define CMU_SD0CLK				(0x0050)
+#define CMU_SD1CLK				(0x0054)
+#define CMU_SD2CLK				(0x0058)
+#define CMU_UART0CLK				(0x005C)
+#define CMU_UART1CLK				(0x0060)
+#define CMU_UART2CLK				(0x0064)
+#define CMU_PWM0CLK				(0x0070)
+#define CMU_PWM1CLK				(0x0074)
+#define CMU_PWM2CLK				(0x0078)
+#define CMU_PWM3CLK				(0x007C)
+#define CMU_USBPLL				(0x0080)
+#define CMU_ASSISTPLL				(0x0084)
+#define CMU_EDPCLK				(0x0088)
+#define CMU_GPU3DCLK				(0x0090)
+#define CMU_CORECTL				(0x009C)
+#define CMU_DEVCLKEN0				(0x00A0)
+#define CMU_DEVCLKEN1				(0x00A4)
+#define CMU_DEVRST0				(0x00A8)
+#define CMU_DEVRST1				(0x00AC)
+#define CMU_UART3CLK				(0x00B0)
+#define CMU_UART4CLK				(0x00B4)
+#define CMU_UART5CLK				(0x00B8)
+#define CMU_UART6CLK				(0x00BC)
+#define CMU_TLSCLK				(0x00C0)
+#define CMU_SD3CLK				(0x00C4)
+#define CMU_PWM4CLK				(0x00C8)
+#define CMU_PWM5CLK				(0x00CC)
+#define CMU_ANALOGDEBUG				(0x00D4)
+#define CMU_TVOUTPLLDEBUG0			(0x00EC)
+#define CMU_TVOUTPLLDEBUG1			(0x00FC)
+
+#endif