From 4af2950c50c8634ed2865cf81e607034f78b84aa Mon Sep 17 00:00:00 2001 From: Alvin Šipraga Date: Mon, 18 Oct 2021 11:38:01 +0200 Subject: net: dsa: realtek-smi: add rtl8365mb subdriver for RTL8365MB-VC MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds a realtek-smi subdriver for the RTL8365MB-VC 4+1 port 10/100/1000M switch controller. The driver has been developed based on a GPL-licensed OS-agnostic Realtek vendor driver known as rtl8367c found in the OpenWrt source tree. Despite the name, the RTL8365MB-VC has an entirely different register layout to the already-supported RTL8366RB ASIC. Notwithstanding this, the structure of the rtl8365mb subdriver is loosely based on the rtl8366rb subdriver. Like the 'rb, it establishes its own irqchip to handle cascaded PHY link status interrupts. The RTL8365MB-VC switch is capable of offloading a large number of features from the software, but this patch introduces only the most basic DSA driver functionality. The ports always function as standalone ports, with bridging handled in software. One more thing. Realtek's nomenclature for switches makes it hard to know exactly what other ASICs might be supported by this driver. The vendor driver goes by the name rtl8367c, but as far as I can tell, no chip actually exists under this name. As such, the subdriver is named rtl8365mb to emphasize the potentially limited support. But it is clear from the vendor sources that a number of other more advanced switches share a similar register layout, and further support should not be too hard to add given access to the relevant hardware. With this in mind, the subdriver has been written with as few assumptions about the particular chip as is reasonable. But the RTL8365MB-VC is the only hardware I have available, so some further work is surely needed. Co-developed-by: Michael Rasmussen Signed-off-by: Michael Rasmussen Signed-off-by: Alvin Šipraga Reviewed-by: Vladimir Oltean Reviewed-by: Linus Walleij Reviewed-by: Florian Fainelli Tested-by: Arınç ÜNAL Signed-off-by: David S. Miller --- drivers/net/dsa/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/dsa/Makefile') diff --git a/drivers/net/dsa/Makefile b/drivers/net/dsa/Makefile index f3598c040994..8da1569a34e6 100644 --- a/drivers/net/dsa/Makefile +++ b/drivers/net/dsa/Makefile @@ -10,7 +10,7 @@ obj-$(CONFIG_NET_DSA_MT7530) += mt7530.o obj-$(CONFIG_NET_DSA_MV88E6060) += mv88e6060.o obj-$(CONFIG_NET_DSA_QCA8K) += qca8k.o obj-$(CONFIG_NET_DSA_REALTEK_SMI) += realtek-smi.o -realtek-smi-objs := realtek-smi-core.o rtl8366.o rtl8366rb.o +realtek-smi-objs := realtek-smi-core.o rtl8366.o rtl8366rb.o rtl8365mb.o obj-$(CONFIG_NET_DSA_SMSC_LAN9303) += lan9303-core.o obj-$(CONFIG_NET_DSA_SMSC_LAN9303_I2C) += lan9303_i2c.o obj-$(CONFIG_NET_DSA_SMSC_LAN9303_MDIO) += lan9303_mdio.o -- cgit v1.2.3