[U-Boot] [PATCH 3/4] net: cpsw: Add support to drive gpios for ethernet to be functional

Vignesh R
2016-07-25T13:10:22Z

On DRA72 EVM, cpsw slaves may be muxed with other modules. This
selection is controlled by a pcf gpio line. Add support for cpsw driver
to acquire mode-gpios and select the appropriate slave using gpio APIs.

Signed-off-by: Vignesh R <vigneshr@ti.com>
---
drivers/net/cpsw.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index 2ce4ec69f1df..83be336cf39c 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -22,6 +22,7 @@
#include <netdev.h>
#include <cpsw.h>
#include <asm/errno.h>
+#include <asm/gpio.h>
#include <asm/io.h>
#include <phy.h>
#include <asm/arch/cpu.h>
@@ -1152,12 +1153,14 @@ static int cpsw_eth_ofdata_to_platdata(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
struct cpsw_priv *priv = dev_get_priv(dev);
+ struct gpio_desc *mode_gpios;
const char *phy_mode;
const void *fdt = gd->fdt_blob;
int node = dev->of_offset;
int subnode;
int slave_index = 0;
int active_slave;
+ int num_mode_gpios;
int ret;

pdata->iobase = dev_get_addr(dev);
@@ -1203,6 +1206,16 @@ static int cpsw_eth_ofdata_to_platdata(struct udevice *dev)
return -ENOENT;
}

+
+ num_mode_gpios = gpio_get_list_count(dev, "mode-gpios");
+ if (num_mode_gpios > 0) {
+ mode_gpios = malloc(sizeof(struct gpio_desc) *
+ num_mode_gpios);
+ gpio_request_list_by_name(dev, "mode-gpios", mode_gpios,
+ num_mode_gpios, GPIOD_IS_OUT);
+ free(mode_gpios);
+ }
+
active_slave = fdtdec_get_int(fdt, node, "active_slave", 0);
priv->data.active_slave = active_slave;

--
2.9.2