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net: sun8i-emac: support new pinctrl DT bindings

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The Linux kernel driver for the Allwinner pin controller gained support
for generic properties, which are now also used in the DTs.
The sun8i-emac Ethernet driver for new Allwinner MACs reads the pins from
the DT, but so far only supported the old binding.
Update the parsing routine to cope with both the old and new bindings,
so that the newer DTs can be used with U-Boot and its Ethernet driver.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This commit is contained in:
Andre Przywara 2018-04-04 01:31:15 +01:00 committed by Jagan Teki
parent 381996c5ed
commit c034117302
1 changed files with 39 additions and 13 deletions
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52
drivers/net/sun8i_emac.c
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@ -21,6 +21,7 @@
#include <malloc.h>
#include <miiphy.h>
#include <net.h>
#include <dt-bindings/pinctrl/sun4i-a10.h>
#ifdef CONFIG_DM_GPIO
#include <asm-generic/gpio.h>
#endif
@ -465,30 +466,55 @@ static int parse_phy_pins(struct udevice *dev)
}
drive = fdt_getprop_u32_default_node(gd->fdt_blob, offset, 0,
"allwinner,drive", 4);
pull = fdt_getprop_u32_default_node(gd->fdt_blob, offset, 0,
"allwinner,pull", 0);
"drive-strength", ~0);
if (drive != ~0) {
if (drive <= 10)
drive = SUN4I_PINCTRL_10_MA;
else if (drive <= 20)
drive = SUN4I_PINCTRL_20_MA;
else if (drive <= 30)
drive = SUN4I_PINCTRL_30_MA;
else
drive = SUN4I_PINCTRL_40_MA;
} else {
drive = fdt_getprop_u32_default_node(gd->fdt_blob, offset, 0,
"allwinner,drive", 4);
}
if (fdt_get_property(gd->fdt_blob, offset, "bias-pull-up", NULL))
pull = SUN4I_PINCTRL_PULL_UP;
else if (fdt_get_property(gd->fdt_blob, offset, "bias-disable", NULL))
pull = SUN4I_PINCTRL_NO_PULL;
else if (fdt_get_property(gd->fdt_blob, offset, "bias-pull-down", NULL))
pull = SUN4I_PINCTRL_PULL_DOWN;
else
pull = fdt_getprop_u32_default_node(gd->fdt_blob, offset, 0,
"allwinner,pull", 0);
for (i = 0; ; i++) {
int pin;
pin_name = fdt_stringlist_get(gd->fdt_blob, offset,
"allwinner,pins", i, NULL);
if (!pin_name)
break;
if (pin_name[0] != 'P')
if (!pin_name) {
pin_name = fdt_stringlist_get(gd->fdt_blob, offset,
"pins", i, NULL);
if (!pin_name)
break;
}
pin = sunxi_name_to_gpio(pin_name);
if (pin < 0)
continue;
pin = (pin_name[1] - 'A') << 5;
if (pin >= 26 << 5)
continue;
pin += simple_strtol(&pin_name[2], NULL, 10);
sunxi_gpio_set_cfgpin(pin, SUN8I_GPD8_GMAC);
sunxi_gpio_set_drv(pin, drive);
sunxi_gpio_set_pull(pin, pull);
if (drive != ~0)
sunxi_gpio_set_drv(pin, drive);
if (pull != ~0)
sunxi_gpio_set_pull(pin, pull);
}
if (!i) {
printf("WARNING: emac: cannot find allwinner,pins property\n");
printf("WARNING: emac: cannot find pins property\n");
return -2;
}