ENGR00209520-01 - MX6SL MSL : Add FEC support

Add FEC support for mx6-sololite:

- Add FEC pad iomux setting.
- Power on phy and init fec.
- Add devname to distinguish different IP.
- Use ANATOP as FEC clock source in default, remove redundant
  config "FEC_CLOCK_FROM_ANATOP".

Signed-off-by: Fugang Duan <B38611@freescale.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/mach-mx6/board-mx6sl_arm2.c b/arch/arm/mach-mx6/board-mx6sl_arm2.c
index 3879b8d3fb79..220ea3241f24 100755
--- a/arch/arm/mach-mx6/board-mx6sl_arm2.c
+++ b/arch/arm/mach-mx6/board-mx6sl_arm2.c
@@ -80,6 +80,7 @@
 #define MX6_ARM2_SD2_WP		IMX_GPIO_NR(4, 29)	/* SD2_DAT6 */
 #define MX6_ARM2_SD2_CD		IMX_GPIO_NR(5, 0)	/* SD2_DAT7 */
 #define MX6_ARM2_SD3_CD		IMX_GPIO_NR(3, 22)	/* REF_CLK_32K */
+#define MX6_ARM2_FEC_PWR_EN	IMX_GPIO_NR(4, 21)	/* FEC_TX_CLK */
 
 static const struct esdhc_platform_data mx6_arm2_sd1_data __initconst = {
 	.cd_gpio		= MX6_ARM2_SD1_CD,
@@ -113,6 +114,10 @@ static inline void mx6_arm2_init_uart(void)
 	imx6q_add_sdhci_usdhc_imx(2, &mx6_arm2_sd3_data);
 }
 
+static struct fec_platform_data fec_data __initdata = {
+	.phy = PHY_INTERFACE_MODE_RMII,
+};
+
 static void imx6_arm2_usbotg_vbus(bool on)
 {
 	if (on)
@@ -161,6 +166,20 @@ static void __init mx6_arm2_init(void)
 	mxc_iomux_v3_setup_multiple_pads(mx6sl_arm2_pads, ARRAY_SIZE(mx6sl_arm2_pads));
 
 	mx6_arm2_init_uart();
+	/* get enet tx reference clk from FEC_REF_CLK pad.
+	 * GPR1[14] = 0, GPR1[18:17] = 00
+	 */
+	mxc_iomux_set_gpr_register(1, 14, 1, 0);
+	mxc_iomux_set_gpr_register(1, 17, 2, 0);
+
+	/* power on FEC phy and reset phy */
+	gpio_request(MX6_ARM2_FEC_PWR_EN, "fec-pwr");
+	gpio_direction_output(MX6_ARM2_FEC_PWR_EN, 1);
+	/* wait RC ms for hw reset */
+	udelay(500);
+
+	imx6_init_fec(fec_data);
+
 	mx6_arm2_init_usb();
 }