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mx6slevk: Add Ethernet support

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mx6slevk has a SMSC8720 connected in RMII mode.

Add support for it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
This commit is contained in:
Fabio Estevam
2013-09-13 00:36:28 -03:00
committed by Stefano Babic
parent 7df51fd8be
commit 31f07964c8
6 changed files with 130 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
arch/arm/cpu/armv7/mx6/clock.c
View File

@@ -282,6 +282,36 @@ static u32 get_mmdc_ch0_clk(void)
return freq / (podf + 1);
}
int enable_fec_anatop_clock(void)
{
u32 reg = 0;
s32 timeout = 100000;
struct anatop_regs __iomem *anatop =
(struct anatop_regs __iomem *)ANATOP_BASE_ADDR;
reg = readl(&anatop->pll_enet);
if ((reg & BM_ANADIG_PLL_ENET_POWERDOWN) ||
(!(reg & BM_ANADIG_PLL_ENET_LOCK))) {
reg &= ~BM_ANADIG_PLL_ENET_POWERDOWN;
writel(reg, &anatop->pll_enet);
while (timeout--) {
if (readl(&anatop->pll_enet) & BM_ANADIG_PLL_ENET_LOCK)
break;
}
if (timeout < 0)
return -ETIMEDOUT;
}
/* Enable FEC clock */
reg |= BM_ANADIG_PLL_ENET_ENABLE;
reg &= ~BM_ANADIG_PLL_ENET_BYPASS;
writel(reg, &anatop->pll_enet);
return 0;
}
#else
static u32 get_mmdc_ch0_clk(void)
{

1
arch/arm/include/asm/arch-mx6/clock.h
View File

@@ -50,4 +50,5 @@ void enable_usboh3_clk(unsigned char enable);
int enable_sata_clock(void);
int enable_i2c_clk(unsigned char enable, unsigned i2c_num);
void enable_ipu_clock(void);
int enable_fec_anatop_clock(void);
#endif /* __ASM_ARCH_CLOCK_H */

5
arch/arm/include/asm/arch-mx6/iomux.h
View File

@@ -27,6 +27,11 @@
#define IOMUXC_GPR13_SATA_PHY_2_MASK (0x1f<<2)
#define IOMUXC_GPR13_SATA_PHY_1_MASK (3<<0)
#define IOMUX_GPR1_FEC_CLOCK_MUX1_SEL_MASK (0x3 << 17)
#define IOMUX_GPR1_FEC_CLOCK_MUX2_SEL_MASK (0x1 << 14)
#define IOMUX_GPR1_FEC_MASK (IOMUX_GPR1_FEC_CLOCK_MUX1_SEL_MASK \
| IOMUX_GPR1_FEC_CLOCK_MUX2_SEL_MASK)
#define IOMUXC_GPR13_SATA_PHY_8_RXEQ_0P5DB (0<<24)
#define IOMUXC_GPR13_SATA_PHY_8_RXEQ_1P0DB (1<<24)
#define IOMUXC_GPR13_SATA_PHY_8_RXEQ_1P5DB (2<<24)

12
arch/arm/include/asm/arch-mx6/mx6sl_pins.h
View File

@@ -18,5 +18,17 @@ enum {
MX6_PAD_SD2_DAT3__USDHC2_DAT3 = IOMUX_PAD(0x0570, 0x0268, 0, 0x0000, 0, 0),
MX6_PAD_UART1_RXD__UART1_RXD = IOMUX_PAD(0x05A0, 0x0298, 0, 0x07FC, 0, 0),
MX6_PAD_UART1_TXD__UART1_TXD = IOMUX_PAD(0x05A4, 0x029C, 0, 0x0000, 0, 0),
MX6_PAD_FEC_MDC__FEC_MDC = IOMUX_PAD(0x41c, 0x12c, 0, 0x000, 0, 0),
MX6_PAD_FEC_MDIO__FEC_MDIO = IOMUX_PAD(0x420, 0x130, 0, 0x6f4, 1, 0),
MX6_PAD_FEC_CRS_DV__FEC_RX_DV = IOMUX_PAD(0x418, 0x128, 0, 0x704, 1, 0),
MX6_PAD_FEC_RXD0__FEC_RX_DATA0 = IOMUX_PAD(0x42c, 0x13c, 0, 0x6f8, 0, 0),
MX6_PAD_FEC_RXD1__FEC_RX_DATA1 = IOMUX_PAD(0x430, 0x140, 0, 0x6fc, 1, 0),
MX6_PAD_FEC_TX_EN__FEC_TX_EN = IOMUX_PAD(0x438, 0x148, 0, 0x000, 0, 0),
MX6_PAD_FEC_TXD0__FEC_TX_DATA0 = IOMUX_PAD(0x43c, 0x14c, 0, 0x000, 0, 0),
MX6_PAD_FEC_TXD1__FEC_TX_DATA1 = IOMUX_PAD(0x440, 0x150, 0, 0x000, 0, 0),
MX6_PAD_FEC_REF_CLK__FEC_REF_OUT = IOMUX_PAD(0x424, 0x134, 0x10, 0x000, 0, 0),
MX6_PAD_FEC_RX_ER__GPIO_4_19 = IOMUX_PAD(0x0428, 0x0138, 5, 0x0000, 0, 0),
MX6_PAD_FEC_TX_CLK__GPIO_4_21 = IOMUX_PAD(0x0434, 0x0144, 5, 0x0000, 0, 0),
};
#endif /* __ASM_ARCH_MX6_MX6SL_PINS_H__ */