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net: sun8i-emac: Determine pinmux based on SoC, not EMAC type 

The pinmux choice for the RMII/RGMII pins the EMAC is connected to is
not dependent on the EMAC IP, but on the SoC it is integrated in.
Deriving the pinmux from the DT compatible string (as we do at the
moment) will thus cause problems with certain EMAC IP / SoC combinations.

To avoid this exact issue with the H616, let's use our Kconfig MACH
symbols to choose the correct pinmux setup.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
This commit is contained in:
Andre Przywara 2021-01-11 21:11:49 +01:00
parent b14e520517
commit eb5a2b6710
1 changed files with 20 additions and 8 deletions
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28
drivers/net/sun8i_emac.c
View File

@ -85,7 +85,9 @@
/* IO mux settings */
#define SUN8I_IOMUX_H3 2
#define SUN8I_IOMUX_R40 5
#define SUN8I_IOMUX_R40 5
#define SUN8I_IOMUX_H6 5
#define SUN8I_IOMUX_H616 2
#define SUN8I_IOMUX 4
/* H3/A64 EMAC Register's offset */
@ -517,10 +519,10 @@ static int sun8i_emac_eth_start(struct udevice *dev)
static int parse_phy_pins(struct udevice *dev)
{
struct emac_eth_dev *priv = dev_get_priv(dev);
int offset;
const char *pin_name;
int drive, pull = SUN4I_PINCTRL_NO_PULL, i;
u32 iomux;
offset = fdtdec_lookup_phandle(gd->fdt_blob, dev_of_offset(dev),
"pinctrl-0");
@ -547,6 +549,21 @@ static int parse_phy_pins(struct udevice *dev)
else if (fdt_get_property(gd->fdt_blob, offset, "bias-pull-down", NULL))
pull = SUN4I_PINCTRL_PULL_DOWN;
/*
* The GPIO pinmux value is an integration choice, so depends on the
* SoC, not the EMAC variant.
*/
if (IS_ENABLED(CONFIG_MACH_SUN8I_H3))
iomux = SUN8I_IOMUX_H3;
else if (IS_ENABLED(CONFIG_MACH_SUN8I_R40))
iomux = SUN8I_IOMUX_R40;
else if (IS_ENABLED(CONFIG_MACH_SUN50I_H6))
iomux = SUN8I_IOMUX_H6;
else if (IS_ENABLED(CONFIG_MACH_SUN50I_H616))
iomux = SUN8I_IOMUX_H616;
else
iomux = SUN8I_IOMUX;
for (i = 0; ; i++) {
int pin;
@ -559,12 +576,7 @@ static int parse_phy_pins(struct udevice *dev)
if (pin < 0)
continue;
if (priv->variant == H3_EMAC)
sunxi_gpio_set_cfgpin(pin, SUN8I_IOMUX_H3);
else if (priv->variant == R40_GMAC || priv->variant == H6_EMAC)
sunxi_gpio_set_cfgpin(pin, SUN8I_IOMUX_R40);
else
sunxi_gpio_set_cfgpin(pin, SUN8I_IOMUX);
sunxi_gpio_set_cfgpin(pin, iomux);
if (drive != ~0)
sunxi_gpio_set_drv(pin, drive);