[U-Boot] [PATCH 6/9] fec_mxc: add support for MX51 processor

Stefano Babic
2010-01-11T12:25:57Z

The patch add support for the Freescale mx51 processor
to the FEC ethernet driver.

Signed-off-by: Stefano Babic <sbabic@denx.de>
---
drivers/net/fec_mxc.c | 57 ++++++++++++++++++++++++++++++-------------------
1 files changed, 35 insertions(+), 22 deletions(-)

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 19116f2..203832e 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -27,8 +27,10 @@
#include <miiphy.h>
#include "fec_mxc.h"

-#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
+#ifndef CONFIG_MX51
+#include <asm/arch/clock.h>
+#endif
#include <asm/io.h>
#include <asm/errno.h>

@@ -108,6 +110,23 @@ static int fec_miiphy_read(char *dev, uint8_t phyAddr, uint8_t regAddr,
return 0;
}

+static void fec_mii_setspeed(struct fec_priv *fec)
+{
+#ifdef CONFIG_MX51
+ writel((((mxc_get_clock(MXC_IPG_CLK) + 499999) / 5000000) << 1),
+ &fec->eth->mii_speed);
+#else
+ /*
+ * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
+ * and do not drop the Preamble.
+ */
+ writel((((imx_get_ahbclk() / 1000000) + 2) / 5) << 1,
+ &fec->eth->mii_speed);
+ debug("fec_init: mii_speed %#lx\n",
+ (((imx_get_ahbclk() / 1000000) + 2) / 5) << 1);
+#endif
+
+}
static int fec_miiphy_write(char *dev, uint8_t phyAddr, uint8_t regAddr,
uint16_t data)
{
@@ -236,7 +255,7 @@ static int fec_rbd_init(struct fec_priv *fec, int count, int size)
fec->rdb_ptr = malloc(size * count + DB_DATA_ALIGNMENT);
p = (uint32_t)fec->rdb_ptr;
if (!p) {
- puts("fec_imx27: not enough malloc memory!\n");
+ puts("fec_mxc: not enough malloc memory!\n");
return -ENOMEM;
}
memset((void *)p, 0, size * count + DB_DATA_ALIGNMENT);
@@ -299,6 +318,7 @@ static void fec_rbd_clean(int last, struct fec_bd *pRbd)

static int fec_get_hwaddr(struct eth_device *dev, unsigned char *mac)
{
+#ifndef CONFIG_MX51
struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
int i;

@@ -306,6 +326,9 @@ static int fec_get_hwaddr(struct eth_device *dev, unsigned char *mac)
mac[6-1-i] = readl(&iim->iim_bank_area0[IIM0_MAC + i]);

return is_valid_ether_addr(mac);
+#else
+ return -1;
+#endif
}

static int fec_set_hwaddr(struct eth_device *dev, unsigned char *mac)
@@ -373,7 +396,7 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
sizeof(struct fec_bd) + DB_ALIGNMENT);
base = (uint32_t)fec->base_ptr;
if (!base) {
- puts("fec_imx27: not enough malloc memory!\n");
+ puts("fec_mxc: not enough malloc memory!\n");
return -ENOMEM;
}
memset((void *)base, 0, (2 + FEC_RBD_NUM) *
@@ -411,14 +434,8 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
* Frame length=1518; MII mode;
*/
writel(0x05ee0024, &fec->eth->r_cntrl); /* FIXME 0x05ee0004 */
- /*
- * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
- * and do not drop the Preamble.
- */
- writel((((imx_get_ahbclk() / 1000000) + 2) / 5) << 1,
- &fec->eth->mii_speed);
- debug("fec_init: mii_speed %#lx\n",
- (((imx_get_ahbclk() / 1000000) + 2) / 5) << 1);
+
+ fec_mii_setspeed(fec);
}
/*
* Set Opcode/Pause Duration Register
@@ -651,22 +668,24 @@ static int fec_recv(struct eth_device *dev)

static int fec_probe(bd_t *bd)
{
- struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE;
struct eth_device *edev;
struct fec_priv *fec = &gfec;
unsigned char ethaddr_str[20];
unsigned char ethaddr[6];
- char *tmp = getenv("ethaddr");
+ char *tmp;
char *end;
+#ifndef CONFIG_MX51
+ struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE;

/* enable FEC clock */
writel(readl(&pll->pccr1) | PCCR1_HCLK_FEC, &pll->pccr1);
writel(readl(&pll->pccr0) | PCCR0_FEC_EN, &pll->pccr0);
+#endif

/* create and fill edev struct */
edev = (struct eth_device *)malloc(sizeof(struct eth_device));
if (!edev) {
- puts("fec_imx27: not enough malloc memory!\n");
+ puts("fec_mxc: not enough malloc memory!\n");
return -ENOMEM;
}
edev->priv = fec;
@@ -702,14 +721,7 @@ static int fec_probe(bd_t *bd)
* Frame length=1518; MII mode;
*/
writel(0x05ee0024, &fec->eth->r_cntrl); /* FIXME 0x05ee0004 */
- /*
- * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
- * and do not drop the Preamble.
- */
- writel((((imx_get_ahbclk() / 1000000) + 2) / 5) << 1,
- &fec->eth->mii_speed);
- debug("fec_init: mii_speed %#lx\n",
- (((imx_get_ahbclk() / 1000000) + 2) / 5) << 1);
+ fec_mii_setspeed(fec);

sprintf(edev->name, "FEC_MXC");

@@ -717,6 +729,7 @@ static int fec_probe(bd_t *bd)

eth_register(edev);

+ tmp = getenv("ethaddr");
if ((NULL != tmp) && (12 <= strlen(tmp))) {
int i;
/* convert MAC from string to int */
--
1.6.3.3