Broadcom iProc based SoCs use a MDIO bus multiplexer where child buses could be internal as well external to SoCs. These buses could supports MDIO transaction compatible to C-22/C-45. Broadcom MDIO bus mulitplexer is an integrated multiplexer where child bus selection and mdio transaction logic lies inside multiplexer itself. To accommodate this multiplexer in existing mux framework below changes were required- 1. Passed MDIO parent bus via mdio_mux_init to MDIO mux framework. 2. Defined one new boolean property named "mdio-integrated-mux". Integrated bus Multiplexer node defines this so when parent bus is registered by calling "of_mdiobus_register", this api will not scan for child nodes. Child node of integrated multiplexer will be muxed nodes not PHYs one hence should not be scanned. This patch set includes MDIO bus multiplexer driver along with above framework changes. It includes one external bus node having Ethernet PHY attached and two internal bus node holding PCIe PHYs. This patch series is based on v4.6.0-rc1 and is available from github- repo: https://github.com/Broadcom/arm64-linux.git branch:mdio-mux-v2 Changes from v1: - stop using "brcm,is_c45" from bus node as suggested by Andrew. MDIO PHY driver will logically OR MII_ADDR_C45 into the address when issues any C45 MDIO read/write transaction. Pramod Kumar (7): mdio:mux: Enhanced MDIO mux framework for integrated multiplexers DT: phy.txt: Add mdio-integrated-mux property binding: mdio-mux: Add DT binding doc for Broadcom MDIO bus mutiplexer DT:mdio-mux: Add mdio multiplexer driver node net:mdio-mux: Add MDIO mux driver for iProc SoCs Binding:PHY: Binding doc for NS2 PCIe PHYs. phy: Add Northstar2 PCI Phy support .../bindings/net/brcm,mdio-mux-iproc.txt | 60 +++++ Documentation/devicetree/bindings/net/mdio-mux.txt | 9 +- .../bindings/phy/brcm,mdio-mux-bus-pci.txt | 27 +++ arch/arm64/boot/dts/broadcom/ns2-svk.dts | 12 + arch/arm64/boot/dts/broadcom/ns2.dtsi | 32 +++ drivers/net/phy/Kconfig | 11 + drivers/net/phy/Makefile | 1 + drivers/net/phy/mdio-mux-bcm-iproc.c | 243 +++++++++++++++++++++ drivers/net/phy/mdio-mux-gpio.c | 2 +- drivers/net/phy/mdio-mux-mmioreg.c | 2 +- drivers/net/phy/mdio-mux.c | 28 ++- drivers/of/of_mdio.c | 3 + drivers/phy/Kconfig | 8 + drivers/phy/Makefile | 1 + drivers/phy/phy-bcm-ns2-pcie.c | 115 ++++++++++ include/linux/mdio-mux.h | 4 +- 16 files changed, 544 insertions(+), 14 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/brcm,mdio-mux-iproc.txt create mode 100644 Documentation/devicetree/bindings/phy/brcm,mdio-mux-bus-pci.txt create mode 100644 drivers/net/phy/mdio-mux-bcm-iproc.c create mode 100644 drivers/phy/phy-bcm-ns2-pcie.c -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
