[PATCH v2] mx51_babbage: Add FEC support
Fabio Estevam
fabioestevam at yahoo.com
Thu Aug 19 09:58:22 EDT 2010
Add FEC support on MX51 Babbage board.
Tested it by booting a rootfs via NFS.
Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
arch/arm/mach-mx5/board-mx51_babbage.c | 43 ++++++++++++++++++++++++++-
arch/arm/plat-mxc/include/mach/iomux-mx51.h | 26 ++++++++++++++++
2 files changed, 68 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
index 6e384d9..10d2f6b 100644
--- a/arch/arm/mach-mx5/board-mx51_babbage.c
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -17,6 +17,7 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/fsl_devices.h>
+#include <linux/fec.h>
#include <mach/common.h>
#include <mach/hardware.h>
@@ -35,7 +36,8 @@
#define BABBAGE_USB_HUB_RESET (0*32 + 7) /* GPIO_1_7 */
#define BABBAGE_USBH1_STP (0*32 + 27) /* GPIO_1_27 */
-#define BABBAGE_PHY_RESET (1*32 +5) /* GPIO_2_5 */
+#define BABBAGE_PHY_RESET (1*32 + 5) /* GPIO_2_5 */
+#define BABBAGE_FEC_PHY_RESET (1*32 + 14) /* GPIO_2_14 */
/* USB_CTRL_1 */
#define MX51_USB_CTRL_1_OFFSET 0x10
@@ -93,6 +95,28 @@ static struct pad_desc mx51babbage_pads[] = {
/* USB HUB reset line*/
MX51_PAD_GPIO_1_7__GPIO_1_7,
+
+ /* FEC */
+ MX51_PAD_EIM_EB2__FEC_MDIO,
+ MX51_PAD_EIM_EB3__FEC_RDAT1,
+ MX51_PAD_EIM_CS2__FEC_RDAT2,
+ MX51_PAD_EIM_CS3__FEC_RDAT3,
+ MX51_PAD_EIM_CS4__FEC_RX_ER,
+ MX51_PAD_EIM_CS5__FEC_CRS,
+ MX51_PAD_NANDF_RB2__FEC_COL,
+ MX51_PAD_NANDF_RB3__FEC_RXCLK,
+ MX51_PAD_NANDF_RB6__FEC_RDAT0,
+ MX51_PAD_NANDF_RB7__FEC_TDAT0,
+ MX51_PAD_NANDF_CS2__FEC_TX_ER,
+ MX51_PAD_NANDF_CS3__FEC_MDC,
+ MX51_PAD_NANDF_CS4__FEC_TDAT1,
+ MX51_PAD_NANDF_CS5__FEC_TDAT2,
+ MX51_PAD_NANDF_CS6__FEC_TDAT3,
+ MX51_PAD_NANDF_CS7__FEC_TX_EN,
+ MX51_PAD_NANDF_RDY_INT__FEC_TX_CLK,
+
+ /* FEC PHY reset line */
+ MX51_PAD_EIM_A20__GPIO_2_14,
};
/* Serial ports */
@@ -171,6 +195,22 @@ static inline void babbage_usbhub_reset(void)
gpio_set_value(BABBAGE_USB_HUB_RESET, 1);
}
+static inline void babbage_fec_reset(void)
+{
+ int ret;
+
+ /* reset FEC PHY */
+ ret = gpio_request(BABBAGE_FEC_PHY_RESET, "fec-phy-reset");
+ if (ret) {
+ printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
+ return;
+ }
+ gpio_direction_output(BABBAGE_FEC_PHY_RESET, 0);
+ gpio_set_value(BABBAGE_FEC_PHY_RESET, 0);
+ msleep(1);
+ gpio_set_value(BABBAGE_FEC_PHY_RESET, 1);
+}
+
/* This function is board specific as the bit mask for the plldiv will also
be different for other Freescale SoCs, thus a common bitmask is not
possible and cannot get place in /plat-mxc/ehci.c.*/
@@ -250,6 +290,7 @@ static void __init mxc_board_init(void)
mxc_iomux_v3_setup_multiple_pads(mx51babbage_pads,
ARRAY_SIZE(mx51babbage_pads));
mxc_init_imx_uart();
+ babbage_fec_reset();
platform_add_devices(devices, ARRAY_SIZE(devices));
mxc_register_device(&mxc_i2c_device0, &babbage_i2c_data);
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx51.h b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
index 21bfa46..ecbc33e 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx51.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
@@ -46,6 +46,15 @@ typedef enum iomux_config {
#define MX51_GPIO_PAD_CTRL (PAD_CTL_DSE_HIGH | PAD_CTL_PKE | \
PAD_CTL_SRE_FAST)
+#define MX51_PAD_CTRL_1 (PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH | \
+ PAD_CTL_PUE | PAD_CTL_PKE | PAD_CTL_HYS)
+#define MX51_PAD_CTRL_2 (PAD_CTL_HYS | PAD_CTL_PKE)
+#define MX51_PAD_CTRL_3 (PAD_CTL_PKE | PAD_CTL_PUS_100K_UP)
+#define MX51_PAD_CTRL_4 (PAD_CTL_DVS | PAD_CTL_HYS | PAD_CTL_PKE)
+#define MX51_PAD_CTRL_5 (PAD_CTL_DVS | PAD_CTL_DSE_HIGH)
+
+#define PAD_CTL_PUS_22K_UP (3 << 4)
+
/*
* The naming convention for the pad modes is MX51_PAD_<padname>__<padmode>
* If <padname> or <padmode> refers to a GPIO, it is named GPIO_<unit>_<num>
@@ -105,11 +114,17 @@ typedef enum iomux_config {
#define MX51_PAD_EIM_A27__GPIO_2_21 IOMUX_PAD(0x45c, 0x0c8, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_EB0__EIM_EB0 IOMUX_PAD(0x460, 0x0cc, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_EB1__EIM_EB1 IOMUX_PAD(0x464, 0x0d0, 0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_EIM_EB2__FEC_MDIO IOMUX_PAD(0x468, 0x0d4, 3, 0x0, 0, MX51_PAD_CTRL_1 | PAD_CTL_PUS_22K_UP)
+#define MX51_PAD_EIM_EB3__FEC_RDAT1 IOMUX_PAD(0x46c, 0x0d8, 3, 0x0, 0, MX51_PAD_CTRL_2)
#define MX51_PAD_EIM_EB2__GPIO_2_22 IOMUX_PAD(0x468, 0x0d4, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_EB3__GPIO_2_23 IOMUX_PAD(0x46c, 0x0d8, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_OE__GPIO_2_24 IOMUX_PAD(0x470, 0x0dc, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_CS0__GPIO_2_25 IOMUX_PAD(0x474, 0x0e0, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_CS1__GPIO_2_26 IOMUX_PAD(0x478, 0x0e4, 1, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_EIM_CS2__FEC_RDAT2 IOMUX_PAD(0x47c, 0x0e8, 3, 0x0, 0, MX51_PAD_CTRL_2)
+#define MX51_PAD_EIM_CS3__FEC_RDAT3 IOMUX_PAD(0x480, 0x0ec, 3, 0x0, 0, MX51_PAD_CTRL_2)
+#define MX51_PAD_EIM_CS4__FEC_RX_ER IOMUX_PAD(0x484, 0x0f0, 3, 0x0, 0, MX51_PAD_CTRL_2)
+#define MX51_PAD_EIM_CS5__FEC_CRS IOMUX_PAD(0x488, 0x0f4, 3, 0x0, 0, MX51_PAD_CTRL_2)
#define MX51_PAD_EIM_CS2__GPIO_2_27 IOMUX_PAD(0x47c, 0x0e8, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_CS3__GPIO_2_28 IOMUX_PAD(0x480, 0x0ec, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_CS4__GPIO_2_29 IOMUX_PAD(0x484, 0x0f0, 1, 0x0, 0, NO_PAD_CTRL)
@@ -125,17 +140,28 @@ typedef enum iomux_config {
#define MX51_PAD_NANDF_WP_B__GPIO_3_7 IOMUX_PAD(0x4F4, 0x118, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_RB0__GPIO_3_8 IOMUX_PAD(0x4F8, 0x11C, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_RB1__GPIO_3_9 IOMUX_PAD(0x4FC, 0x120, 3, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_NANDF_RB2__FEC_COL IOMUX_PAD(0x500, 0x124, 1, 0x0, 0, MX51_PAD_CTRL_2)
+#define MX51_PAD_NANDF_RB3__FEC_RXCLK IOMUX_PAD(0x504, 0x128, 1, 0x0, 0, MX51_PAD_CTRL_2)
+#define MX51_PAD_NANDF_RB7__FEC_TDAT0 IOMUX_PAD(0x5E0, 0x138, 1, 0x0, 0, MX51_PAD_CTRL_5)
+#define MX51_PAD_NANDF_RB6__FEC_RDAT0 IOMUX_PAD(0x5DC, 0x134, 1, 0x0, 0, MX51_PAD_CTRL_4)
#define MX51_PAD_NANDF_RB2__GPIO_3_10 IOMUX_PAD(0x500, 0x124, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_RB3__GPIO_3_11 IOMUX_PAD(0x504, 0x128, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_NAND__GPIO_3_12 IOMUX_PAD(0x514, 0x12C, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_CS0__GPIO_3_16 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_CS1__GPIO_3_17 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_NANDF_CS2__FEC_TX_ER IOMUX_PAD(0x520, 0x138, 2, 0x0, 0, MX51_PAD_CTRL_5)
+#define MX51_PAD_NANDF_CS3__FEC_MDC IOMUX_PAD(0x524, 0x13C, 2, 0x0, 0, MX51_PAD_CTRL_5)
+#define MX51_PAD_NANDF_CS4__FEC_TDAT1 IOMUX_PAD(0x528, 0x140, 2, 0x0, 0, MX51_PAD_CTRL_5)
+#define MX51_PAD_NANDF_CS5__FEC_TDAT2 IOMUX_PAD(0x52C, 0x144, 2, 0x0, 0, MX51_PAD_CTRL_5)
+#define MX51_PAD_NANDF_CS6__FEC_TDAT3 IOMUX_PAD(0x530, 0x148, 2, 0x0, 0, MX51_PAD_CTRL_5)
+#define MX51_PAD_NANDF_CS7__FEC_TX_EN IOMUX_PAD(0x534, 0x14C, 1, 0x0, 0, MX51_PAD_CTRL_5)
#define MX51_PAD_NANDF_CS2__GPIO_3_18 IOMUX_PAD(0x520, 0x138, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_CS3__GPIO_3_19 IOMUX_PAD(0x524, 0x13C, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_CS4__GPIO_3_20 IOMUX_PAD(0x528, 0x140, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_CS5__GPIO_3_21 IOMUX_PAD(0x52C, 0x144, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_CS6__GPIO_3_22 IOMUX_PAD(0x530, 0x148, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_CS7__GPIO_3_23 IOMUX_PAD(0x534, 0x14C, 3, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_NANDF_RDY_INT__FEC_TX_CLK IOMUX_PAD(0x538, 0x150, 1, 0x0, 0, MX51_PAD_CTRL_4)
#define MX51_PAD_NANDF_RDY_INT__GPIO_3_24 IOMUX_PAD(0x538, 0x150, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_D15__GPIO_3_25 IOMUX_PAD(0x53C, 0x154, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_NANDF_D14__GPIO_3_26 IOMUX_PAD(0x540, 0x158, 3, 0x0, 0, NO_PAD_CTRL)
--
1.6.0.4
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