stmmac: add HW DMA feature register (v3)
New GMAC chips have an extra register to indicate
the presence of the optional features/functions of
the DMA core.
This patch adds this support and all the HW cap
are exported via debugfs.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index ae7f563..2e35be7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -16,7 +16,8 @@
default n
depends on STMMAC_ETH && DEBUG_FS
-- help
- The stmmac entry in /sys reports DMA TX/RX rings.
+ The stmmac entry in /sys reports DMA TX/RX rings
+ or (if supported) the HW cap register.
config STMMAC_DA
bool "STMMAC DMA arbitration scheme"