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

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Date:   Tue, 21 May 2019 01:50:04 +0200
From:   megous@...ous.com
To:     linux-sunxi@...glegroups.com,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>
Cc:     Icenowy Zheng <icenowy@...c.io>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        Ondrej Jirman <megous@...ous.com>
Subject: [PATCH v5 1/6] net: stmmac: sun8i: add support for Allwinner H6 EMAC

From: Icenowy Zheng <icenowy@...c.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 <icenowy@...c.io>
Signed-off-by: Ondrej Jirman <megous@...ous.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