Merge branch 'net-mvneta-armada-98dx2530-soc'

Chris Packham says:

====================
net: mvneta: Armada 98DX2530 SoC

This is split off from [1] to let it go in via net-next rather than waiting for
the rest of the series to land.

[1] - https://lore.kernel.org/lkml/20220314213143.2404162-1-chris.packham@alliedtelesis.co.nz/
====================

Link: https://lore.kernel.org/r/20220315215207.2746793-1-chris.packham@alliedtelesis.co.nzSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt

@@ -5,6 +5,7 @@ Required properties:
 	"marvell,armada-370-neta"
 	"marvell,armada-xp-neta"
 	"marvell,armada-3700-neta"
+	"marvell,armada-ac5-neta"
 - reg: address and length of the register set for the device.
 - interrupts: interrupt for the device
 - phy: See ethernet.txt file in the same directory.

drivers/net/ethernet/marvell/mvneta.c

@@ -76,6 +76,8 @@
 #define MVNETA_WIN_SIZE(w)                      (0x2204 + ((w) << 3))
 #define MVNETA_WIN_REMAP(w)                     (0x2280 + ((w) << 2))
 #define MVNETA_BASE_ADDR_ENABLE                 0x2290
+#define      MVNETA_AC5_CNM_DDR_TARGET		0x2
+#define      MVNETA_AC5_CNM_DDR_ATTR		0xb
 #define MVNETA_ACCESS_PROTECT_ENABLE            0x2294
 #define MVNETA_PORT_CONFIG                      0x2400
 #define      MVNETA_UNI_PROMISC_MODE            BIT(0)
@@ -544,6 +546,7 @@ struct mvneta_port {
 
 	/* Flags for special SoC configurations */
 	bool neta_armada3700;
+	bool neta_ac5;
 	u16 rx_offset_correction;
 	const struct mbus_dram_target_info *dram_target_info;
 };
@@ -5324,6 +5327,10 @@ static void mvneta_conf_mbus_windows(struct mvneta_port *pp,
 			win_protect |= 3 << (2 * i);
 		}
 	} else {
+		if (pp->neta_ac5)
+			mvreg_write(pp, MVNETA_WIN_BASE(0),
+				    (MVNETA_AC5_CNM_DDR_ATTR << 8) |
+				    MVNETA_AC5_CNM_DDR_TARGET);
 		/* For Armada3700 open default 4GB Mbus window, leaving
 		 * arbitration of target/attribute to a different layer
 		 * of configuration.
@@ -5409,6 +5416,10 @@ static int mvneta_probe(struct platform_device *pdev)
 	/* Get special SoC configurations */
 	if (of_device_is_compatible(dn, "marvell,armada-3700-neta"))
 		pp->neta_armada3700 = true;
+	if (of_device_is_compatible(dn, "marvell,armada-ac5-neta")) {
+		pp->neta_armada3700 = true;
+		pp->neta_ac5 = true;
+	}
 
 	dev->irq = irq_of_parse_and_map(dn, 0);
 	if (dev->irq == 0)
@@ -5769,6 +5780,7 @@ static const struct of_device_id mvneta_match[] = {
 	{ .compatible = "marvell,armada-370-neta" },
 	{ .compatible = "marvell,armada-xp-neta" },
 	{ .compatible = "marvell,armada-3700-neta" },
+	{ .compatible = "marvell,armada-ac5-neta" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, mvneta_match);