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 Reviewed-by: Tom Rini trini@konsulko.com ---
v2: Drop extra blank line
drivers/net/cpsw.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c index 2ce4ec69f1df..774b021e356e 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 +1206,15 @@ 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;