Make DMA programmable burst length more configurable in the stmmac driver. This is done by adding support for independent pbl for tx/rx through DT. More fine grained tuning of pbl is possible thanks to a DT property saying that we should NOT multiply pbl values by x8/x4 in hardware. All new DT properties are optional, and created in a way that it will not affect any existing DT configurations. Changes since V1: Created cover-letter. Rebased patch set against next-20161205, since conflicting patches to stmmac_platform.c has been merged since V1. Changes since V2: Moved default value initialization of pbl to stmmac_platform.c and added a check for pbl != 0 in stmmac_main.c, to catch a possble pbl == 0 from pci glue. Niklas Cassel (6): net: stmmac: return error if no DMA configuration is found net: stmmac: simplify the common DMA init API net: stmmac: stmmac_platform: fix parsing of DT binding net: stmmac: dwmac1000: fix define DMA_BUS_MODE_RPBL_MASK net: stmmac: add support for independent DMA pbl for tx/rx net: smmac: allow configuring lower pbl values Documentation/devicetree/bindings/net/stmmac.txt | 8 +++++- Documentation/networking/stmmac.txt | 24 +++++++++++----- drivers/net/ethernet/stmicro/stmmac/common.h | 4 +-- drivers/net/ethernet/stmicro/stmmac/dwmac1000.h | 2 +- .../net/ethernet/stmicro/stmmac/dwmac1000_dma.c | 26 ++++++++++-------- drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c | 7 +++-- drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | 25 ++++++++++------- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 14 ++++------ drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c | 2 ++ .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 32 ++++++++++++---------- include/linux/stmmac.h | 3 ++ 11 files changed, 88 insertions(+), 59 deletions(-) -- 2.1.4 -- 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
