diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/net/stmmac.txt | 6 | ||||
| -rw-r--r-- | Documentation/networking/stmmac.txt | 19 |
2 files changed, 18 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt index b95ff998ba73..8080038ff1b2 100644 --- a/Documentation/devicetree/bindings/net/stmmac.txt +++ b/Documentation/devicetree/bindings/net/stmmac.txt @@ -34,7 +34,11 @@ Optional properties: platforms. - tx-fifo-depth: See ethernet.txt file in the same directory - rx-fifo-depth: See ethernet.txt file in the same directory -- snps,pbl Programmable Burst Length +- snps,pbl Programmable Burst Length (tx and rx) +- snps,txpbl Tx Programmable Burst Length. Only for GMAC and newer. + If set, DMA tx will use this value rather than snps,pbl. +- snps,rxpbl Rx Programmable Burst Length. Only for GMAC and newer. + If set, DMA rx will use this value rather than snps,pbl. - snps,aal Address-Aligned Beats - snps,fixed-burst Program the DMA to use the fixed burst mode - snps,mixed-burst Program the DMA to use the mixed burst mode diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt index 014f4f756cb7..6add57374f70 100644 --- a/Documentation/networking/stmmac.txt +++ b/Documentation/networking/stmmac.txt @@ -153,7 +153,8 @@ Where: o pbl: the Programmable Burst Length is maximum number of beats to be transferred in one DMA transaction. GMAC also enables the 4xPBL by default. - o fixed_burst/mixed_burst/burst_len + o txpbl/rxpbl: GMAC and newer supports independent DMA pbl for tx/rx. + o fixed_burst/mixed_burst/aal o clk_csr: fixed CSR Clock range selection. o has_gmac: uses the GMAC core. o enh_desc: if sets the MAC will use the enhanced descriptor structure. @@ -205,16 +206,22 @@ tuned according to the HW capabilities. struct stmmac_dma_cfg { int pbl; + int txpbl; + int rxpbl; int fixed_burst; - int burst_len_supported; + int mixed_burst; + bool aal; }; Where: - o pbl: Programmable Burst Length + o pbl: Programmable Burst Length (tx and rx) + o txpbl: Transmit Programmable Burst Length. Only for GMAC and newer. + If set, DMA tx will use this value rather than pbl. + o rxpbl: Receive Programmable Burst Length. Only for GMAC and newer. + If set, DMA rx will use this value rather than pbl. o fixed_burst: program the DMA to use the fixed burst mode - o burst_len: this is the value we put in the register - supported values are provided as macros in - linux/stmmac.h header file. + o mixed_burst: program the DMA to use the mixed burst mode + o aal: Address-Aligned Beats --- |