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authorWenyou Yang <wenyou.yang@atmel.com>2016-11-02 10:06:56 +0800
committerJoe Hershberger <joe.hershberger@ni.com>2017-02-07 10:54:31 -0600
commit577aa3b3587193ee078ce83d918604da6ac84dd5 (patch)
tree9a6033adf6ca2c98eb6975ca40ff3808cd732085
parentebcb40a5a02adc153db949d59e9df9bf0d89b6ec (diff)
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net: macb: Add the clock support
Due to introducing the at91 clock driver, add the clock support. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
-rw-r--r--drivers/net/macb.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 01527f7..f97b82a 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -4,6 +4,7 @@
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <clk.h>
#include <dm.h>
/*
@@ -112,6 +113,7 @@ struct macb_device {
struct mii_dev *bus;
#ifdef CONFIG_DM_ETH
+ unsigned long pclk_rate;
phy_interface_t phy_interface;
#endif
};
@@ -754,7 +756,11 @@ static int _macb_write_hwaddr(struct macb_device *macb, unsigned char *enetaddr)
static u32 macb_mdc_clk_div(int id, struct macb_device *macb)
{
u32 config;
+#ifdef CONFIG_DM_ETH
+ unsigned long macb_hz = macb->pclk_rate;
+#else
unsigned long macb_hz = get_macb_pclk_rate(id);
+#endif
if (macb_hz < 20000000)
config = MACB_BF(CLK, MACB_CLK_DIV8);
@@ -771,7 +777,12 @@ static u32 macb_mdc_clk_div(int id, struct macb_device *macb)
static u32 gem_mdc_clk_div(int id, struct macb_device *macb)
{
u32 config;
+
+#ifdef CONFIG_DM_ETH
+ unsigned long macb_hz = macb->pclk_rate;
+#else
unsigned long macb_hz = get_macb_pclk_rate(id);
+#endif
if (macb_hz < 20000000)
config = GEM_BF(CLK, GEM_CLK_DIV8);
@@ -991,6 +1002,30 @@ static const struct eth_ops macb_eth_ops = {
.write_hwaddr = macb_write_hwaddr,
};
+static int macb_enable_clk(struct udevice *dev)
+{
+ struct macb_device *macb = dev_get_priv(dev);
+ struct clk clk;
+ ulong clk_rate;
+ int ret;
+
+ ret = clk_get_by_index(dev, 0, &clk);
+ if (ret)
+ return -EINVAL;
+
+ ret = clk_enable(&clk);
+ if (ret)
+ return ret;
+
+ clk_rate = clk_get_rate(&clk);
+ if (!clk_rate)
+ return -EINVAL;
+
+ macb->pclk_rate = clk_rate;
+
+ return 0;
+}
+
static int macb_eth_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
@@ -998,6 +1033,7 @@ static int macb_eth_probe(struct udevice *dev)
#ifdef CONFIG_DM_ETH
const char *phy_mode;
+ int ret;
phy_mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "phy-mode", NULL);
if (phy_mode)
@@ -1010,7 +1046,12 @@ static int macb_eth_probe(struct udevice *dev)
macb->regs = (void *)pdata->iobase;
+ ret = macb_enable_clk(dev);
+ if (ret)
+ return ret;
+
_macb_eth_initialize(macb);
+
#if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
int retval;
struct mii_dev *mdiodev = mdio_alloc();