diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/net/stmmac.txt | 2 | ||||
| -rw-r--r-- | Documentation/networking/stmmac.txt | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt index 8080038ff1b2..128da752fec9 100644 --- a/Documentation/devicetree/bindings/net/stmmac.txt +++ b/Documentation/devicetree/bindings/net/stmmac.txt @@ -39,6 +39,8 @@ Optional properties: 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,no-pbl-x8 Don't multiply the pbl/txpbl/rxpbl values by 8. + For core rev < 3.50, don't multiply the values by 4. - 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 6add57374f70..2bb07078f535 100644 --- a/Documentation/networking/stmmac.txt +++ b/Documentation/networking/stmmac.txt @@ -152,8 +152,9 @@ Where: o dma_cfg: internal DMA parameters 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. + GMAC also enables the 4xPBL by default. (8xPBL for GMAC 3.50 and newer) o txpbl/rxpbl: GMAC and newer supports independent DMA pbl for tx/rx. + o pblx8: Enable 8xPBL (4xPBL for core rev < 3.50). Enabled by default. o fixed_burst/mixed_burst/aal o clk_csr: fixed CSR Clock range selection. o has_gmac: uses the GMAC core. @@ -208,6 +209,7 @@ struct stmmac_dma_cfg { int pbl; int txpbl; int rxpbl; + bool pblx8; int fixed_burst; int mixed_burst; bool aal; @@ -219,6 +221,7 @@ Where: 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 pblx8: Enable 8xPBL (4xPBL for core rev < 3.50). Enabled by default. o fixed_burst: program the DMA to use the fixed burst mode o mixed_burst: program the DMA to use the mixed burst mode o aal: Address-Aligned Beats |