From 2e5f032095ff101274dfb03d5fd5e06d9aeb83cd Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Tue, 7 Oct 2008 13:45:18 +0000 Subject: dsa: add support for the Marvell 88E6131 switch chip Add support for the Marvell 88E6131 switch chip. This chip only supports the original (ethertype-less) DSA tagging format. On the 88E6131, there is a PHY Polling Unit (PPU) which has exclusive access to each of the PHYs's MII management registers. If we want to talk to the PHYs from software, we have to disable the PPU and wait for it to complete its current transaction before we can do so, and we need to re-enable the PPU afterwards to make sure that the switch will notice changes in link state and speed on the individual ports as they occur. Since disabling the PPU is rather slow, and since MII management accesses are typically done in bursts, this patch keeps the PPU disabled for 10ms after a software access completes. This makes handling the PPU slightly more complex, but speeds up something like running ethtool on one of the switch slave interfaces from ~300ms to ~30ms on typical hardware. Signed-off-by: Lennert Buytenhek Tested-by: Nicolas Pitre Tested-by: Peter van Valderen Tested-by: Dirk Teurlings Signed-off-by: David S. Miller --- net/dsa/Kconfig | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'net/dsa/Kconfig') diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig index 6b68016827da..79bcd76d3f10 100644 --- a/net/dsa/Kconfig +++ b/net/dsa/Kconfig @@ -24,6 +24,19 @@ config NET_DSA_MV88E6XXX bool default n +config NET_DSA_MV88E6XXX_NEED_PPU + bool + default n + +config NET_DSA_MV88E6131 + bool "Marvell 88E6131 ethernet switch chip support" + select NET_DSA_MV88E6XXX + select NET_DSA_MV88E6XXX_NEED_PPU + select NET_DSA_TAG_DSA + ---help--- + This enables support for the Marvell 88E6131 ethernet switch + chip. + config NET_DSA_MV88E6123_61_65 bool "Marvell 88E6123/6161/6165 ethernet switch chip support" select NET_DSA_MV88E6XXX -- cgit v1.2.3-58-ga151