[U-Boot] [PATCH v3 09/10] sunxi: Add support for using MII phy-s with the GMAC nic

Hans de Goede
2014-06-09T09:37:01Z

From: Chen-Yu Tsai <wens@csie.org>

Many A20 boards (ie Cubieboard2, A20-OLinuXino_MICRO) use an 100 Mbit MII
phy together with the GMAC nic found in the A20 SoC, add support for this
(this will get used when we add these boards in a later patch).

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
---
board/sunxi/gmac.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/board/sunxi/gmac.c b/board/sunxi/gmac.c
index e48328d..e7ff952 100644
--- a/board/sunxi/gmac.c
+++ b/board/sunxi/gmac.c
@@ -16,17 +16,28 @@ int sunxi_gmac_initialize(bd_t *bis)
setbits_le32(&ccm->ahb_gate1, 0x1 << AHB_GATE_OFFSET_GMAC);

/* Set MII clock */
+#ifdef CONFIG_RGMII
setbits_le32(&ccm->gmac_clk_cfg, CCM_GMAC_CTRL_TX_CLK_SRC_INT_RGMII |
CCM_GMAC_CTRL_GPIT_RGMII);
+#else
+ setbits_le32(&ccm->gmac_clk_cfg, CCM_GMAC_CTRL_TX_CLK_SRC_MII |
+ CCM_GMAC_CTRL_GPIT_MII);
+#endif

/* Configure pin mux settings for GMAC */
for (pin = SUNXI_GPA(0); pin <= SUNXI_GPA(16); pin++) {
+#ifdef CONFIG_RGMII
/* skip unused pins in RGMII mode */
if (pin == SUNXI_GPA(9) || pin == SUNXI_GPA(14))
continue;
+#endif
sunxi_gpio_set_cfgpin(pin, SUN7I_GPA0_GMAC);
sunxi_gpio_set_drv(pin, 3);
}

+#ifdef CONFIG_RGMII
return designware_initialize(SUNXI_GMAC_BASE, PHY_INTERFACE_MODE_RGMII);
+#else
+ return designware_initialize(SUNXI_GMAC_BASE, PHY_INTERFACE_MODE_MII);
+#endif
}
--
2.0.0