From c03411730215dadec9e4c2edcb8119e85bc4a406 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Wed, 4 Apr 2018 01:31:15 +0100 Subject: [PATCH] net: sun8i-emac: support new pinctrl DT bindings 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 Acked-by: Maxime Ripard Reviewed-by: Jagan Teki --- drivers/net/sun8i_emac.c | 52 ++++++++++++++++++++++++++++++---------- 1 file changed, 39 insertions(+), 13 deletions(-) diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c index be43472b1a..c8c8ef73e9 100644 --- a/drivers/net/sun8i_emac.c +++ b/drivers/net/sun8i_emac.c @@ -21,6 +21,7 @@ #include #include #include +#include #ifdef CONFIG_DM_GPIO #include #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') - continue; - pin = (pin_name[1] - 'A') << 5; - if (pin >= 26 << 5) + 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 += 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; } -- 2.39.5