[PATCH v5 1/6] net: stmmac: sun8i: add support for Allwinner H6 EMAC

[meg...@megous.com]

From: Icenowy Zheng <ice...@aosc.io>

The EMAC on Allwinner H6 is just like the one on A64. The "internal PHY" on
H6 is on a co-packaged AC200 chip, and it's not really internal (it's
connected via RMII at PA GPIO bank).

Add support for the Allwinner H6 EMAC in the dwmac-sun8i driver.

Signed-off-by: Icenowy Zheng <ice...@aosc.io>
Signed-off-by: Ondrej Jirman <meg...@megous.com>
---
.../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index ba124a4da793..3258dec84d55 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -147,6 +147,20 @@ static const struct emac_variant emac_variant_a64 = {
.tx_delay_max = 7,
};

+static const struct emac_variant emac_variant_h6 = {
+ .default_syscon_value = 0x50000,
+ .syscon_field = &sun8i_syscon_reg_field,
+ /* The "Internal PHY" of H6 is not on the die. It's on the
+ * co-packaged AC200 chip instead.
+ */
+ .soc_has_internal_phy = false,
+ .support_mii = true,
+ .support_rmii = true,
+ .support_rgmii = true,
+ .rx_delay_max = 31,
+ .tx_delay_max = 7,
+};
+
#define EMAC_BASIC_CTL0 0x00
#define EMAC_BASIC_CTL1 0x04
#define EMAC_INT_STA 0x08
@@ -1212,6 +1226,8 @@ static const struct of_device_id sun8i_dwmac_match[] = {
.data = &emac_variant_r40 },
{ .compatible = "allwinner,sun50i-a64-emac",
.data = &emac_variant_a64 },
+ { .compatible = "allwinner,sun50i-h6-emac",
+ .data = &emac_variant_h6 },
{ }
};
MODULE_DEVICE_TABLE(of, sun8i_dwmac_match);
--
2.21.0