1 files changed, 94 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-mx7ulp/iomux.h b/arch/arm/include/asm/arch-mx7ulp/iomux.h
new file mode 100644
index 0000000..f067c02
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx7ulp/iomux.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Based on Linux i.MX iomux-v3.h file:
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ *			<armlinux@phytec.de>
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ */
+
+#ifndef __MACH_IOMUX_H__
+#define __MACH_IOMUX_H__
+
+/*
+ *	build IOMUX_PAD structure
+ *
+ * This iomux scheme is based around pads, which are the physical balls
+ * on the processor.
+ *
+ * - Each pad has a pad control register (IOMUXC_SW_PAD_CTRL_x) which controls
+ *   things like driving strength and pullup/pulldown.
+ * - Each pad can have but not necessarily does have an output routing register
+ *   (IOMUXC_SW_MUX_CTL_PAD_x).
+ * - Each pad can have but not necessarily does have an input routing register
+ *   (IOMUXC_x_SELECT_INPUT)
+ *
+ * The three register sets do not have a fixed offset to each other,
+ * hence we order this table by pad control registers (which all pads
+ * have) and put the optional i/o routing registers into additional
+ * fields.
+ *
+ * The naming convention for the pad modes is SOC_PAD_<padname>__<padmode>
+ * If <padname> or <padmode> refers to a GPIO, it is named GPIO_<unit>_<num>
+ *
+ * IOMUX/PAD Bit field definitions
+ *
+ * MUX_CTRL_OFS:	                0..15 (16)
+ * SEL_INPUT_OFS:	               16..31 (16)
+ * MUX_MODE:	                   32..37  (6)
+ * SEL_INP:		                   38..41  (4)
+ * PAD_CTRL + NO_PAD_CTRL:         42..60 (19)
+ * reserved:		               61-63      (3)
+*/
+
+typedef u64 iomux_cfg_t;
+
+#define MUX_CTRL_OFS_SHIFT	     0
+#define MUX_CTRL_OFS_MASK	((iomux_cfg_t)0xffff << MUX_CTRL_OFS_SHIFT)
+#define MUX_SEL_INPUT_OFS_SHIFT	16
+#define MUX_SEL_INPUT_OFS_MASK	((iomux_cfg_t)0xffff << \
+	MUX_SEL_INPUT_OFS_SHIFT)
+
+#define MUX_MODE_SHIFT		32
+#define MUX_MODE_MASK		((iomux_cfg_t)0x3f << MUX_MODE_SHIFT)
+#define MUX_SEL_INPUT_SHIFT	38
+#define MUX_SEL_INPUT_MASK	((iomux_cfg_t)0xf << MUX_SEL_INPUT_SHIFT)
+#define MUX_PAD_CTRL_SHIFT	42
+#define MUX_PAD_CTRL_MASK	((iomux_cfg_t)0x7ffff << MUX_PAD_CTRL_SHIFT)
+
+#define MUX_PAD_CTRL(x)		((iomux_cfg_t)(x) << MUX_PAD_CTRL_SHIFT)
+
+#define IOMUX_PAD(pad_ctrl_ofs, mux_ctrl_ofs, mux_mode, sel_input_ofs,	\
+		sel_input, pad_ctrl)					\
+	(((iomux_cfg_t)(mux_ctrl_ofs) << MUX_CTRL_OFS_SHIFT)     |	\
+	((iomux_cfg_t)(mux_mode)      << MUX_MODE_SHIFT)         |	\
+	((iomux_cfg_t)(pad_ctrl)      << MUX_PAD_CTRL_SHIFT)     |	\
+	((iomux_cfg_t)(sel_input_ofs) << MUX_SEL_INPUT_OFS_SHIFT)|	\
+	((iomux_cfg_t)(sel_input)     << MUX_SEL_INPUT_SHIFT))
+
+#define NEW_PAD_CTRL(cfg, pad)	(((cfg) & ~MUX_PAD_CTRL_MASK) | \
+					MUX_PAD_CTRL(pad))
+
+
+#define IOMUX_CONFIG_MPORTS       0x20
+#define MUX_MODE_MPORTS           ((iomux_v3_cfg_t)IOMUX_CONFIG_MPORTS << \
+				MUX_MODE_SHIFT)
+
+/* Bit definition below needs to be fixed acccording to ulp rm */
+
+#define NO_PAD_CTRL		     (1 << 18)
+#define PAD_CTL_OBE_ENABLE	 (1 << 17)
+#define PAD_CTL_IBE_ENABLE	 (1 << 16)
+#define PAD_CTL_DSE          (1 << 6)
+#define PAD_CTL_ODE          (1 << 5)
+#define PAD_CTL_SRE_FAST     (0 << 2)
+#define PAD_CTL_SRE_SLOW     (1 << 2)
+#define PAD_CTL_PUE          (1 << 1)
+#define PAD_CTL_PUS_UP       ((1 << 0) | PAD_CTL_PUE)
+#define PAD_CTL_PUS_DOWN     ((0 << 0) | PAD_CTL_PUE)
+
+
+void mx7ulp_iomux_setup_pad(iomux_cfg_t pad);
+void mx7ulp_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list,
+				      unsigned count);
+#endif	/* __MACH_IOMUX_H__*/