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stmmac: add HW DMA feature register (v3)

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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>
This commit is contained in:
Giuseppe CAVALLARO 2011-09-01 21:51:41 +00:00 • committed by David S. Miller
commit e743482141
6 changed files with 174 additions and 1 deletions
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