[U-Boot] [PATCH v4 1/7] arm: vf610: Add IOMUX support for Vybrid VF610

[Alison Wang]

This patch adds the IOMUX support for Vybrid VF610 platform.

There is a little difference for IOMUXC module between VF610 and i.MX
platform, the muxmode and pad configuration share one 32bit register on
VF610, but they are two independent registers on I.MX platform. A
CONFIG_IOMUX_SHARE_CONFIG_REG was introduced to fit this difference.

Signed-off-by: Alison Wang <b18965 at freescale.com>
---
Changes in v4:
- Rename "MVF600" to "VF610"
- Define PAD_CTL_PUS_47K_UP and PAD_CTL_PUS_100K_UP with PAD_CTL_PUE enabled
- Reorganize the definitions
- Correct the spaces and tabs

Changes in v3:
- Define PAD_CTL_PUE with PKE enabled

Changes in v2:
- Use common iomux-v3 code

 arch/arm/imx-common/Makefile               |  2 +-
 arch/arm/imx-common/iomux-v3.c             |  6 ++++++
 arch/arm/include/asm/imx-common/iomux-v3.h | 18 ++++++++++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/arch/arm/imx-common/Makefile b/arch/arm/imx-common/Makefile
index 8bba8a5..9492326 100644
--- a/arch/arm/imx-common/Makefile
+++ b/arch/arm/imx-common/Makefile
@@ -27,7 +27,7 @@ include $(TOPDIR)/config.mk
 
 LIB     = $(obj)libimx-common.o
 
-ifeq ($(SOC),$(filter $(SOC),mx25 mx35 mx5 mx6))
+ifeq ($(SOC),$(filter $(SOC),mx25 mx35 mx5 mx6 vf610))
 COBJS-y	= iomux-v3.o
 endif
 ifeq ($(SOC),$(filter $(SOC),mx5 mx6))
diff --git a/arch/arm/imx-common/iomux-v3.c b/arch/arm/imx-common/iomux-v3.c
index 7fe5ce7..35880c7 100644
--- a/arch/arm/imx-common/iomux-v3.c
+++ b/arch/arm/imx-common/iomux-v3.c
@@ -48,8 +48,14 @@ void imx_iomux_v3_setup_pad(iomux_v3_cfg_t pad)
 	if (sel_input_ofs)
 		__raw_writel(sel_input, base + sel_input_ofs);
 
+#ifdef CONFIG_IOMUX_SHARE_CONF_REG
+	if (!(pad_ctrl & NO_PAD_CTRL))
+		__raw_writel((mux_mode << PAD_MUX_MODE_SHIFT) | pad_ctrl,
+			base + pad_ctrl_ofs);
+#else
 	if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
 		__raw_writel(pad_ctrl, base + pad_ctrl_ofs);
+#endif
 }
 
 void imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t const *pad_list,
diff --git a/arch/arm/include/asm/imx-common/iomux-v3.h b/arch/arm/include/asm/imx-common/iomux-v3.h
index 0b4e763..ebf54cf 100644
--- a/arch/arm/include/asm/imx-common/iomux-v3.h
+++ b/arch/arm/include/asm/imx-common/iomux-v3.h
@@ -121,6 +121,24 @@ typedef u64 iomux_v3_cfg_t;
 #define PAD_CTL_DSE_40ohm	(6 << 3)
 #define PAD_CTL_DSE_34ohm	(7 << 3)
 
+#elif defined(CONFIG_VF610)
+
+#define PAD_MUX_MODE_SHIFT	20
+
+#define PAD_CTL_SPEED_MED	(1 << 12)
+#define PAD_CTL_SPEED_HIGH	(3 << 12)
+
+#define PAD_CTL_DSE_50ohm	(3 << 6)
+#define PAD_CTL_DSE_25ohm	(6 << 6)
+#define PAD_CTL_DSE_20ohm	(7 << 6)
+
+#define PAD_CTL_PUS_47K_UP	(1 << 4 | PAD_CTL_PUE)
+#define PAD_CTL_PUS_100K_UP	(2 << 4 | PAD_CTL_PUE)
+#define PAD_CTL_PKE		(1 << 3)
+#define PAD_CTL_PUE		(1 << 2 | PAD_CTL_PKE)
+
+#define PAD_CTL_OBE_IBE_ENABLE	(3 << 0)
+
 #else
 
 #define PAD_CTL_DVS		(1 << 13)
-- 
1.8.0