stmmac: MDC clock dynamically based on the csr clock input
If a specific clk_csr value is passed from the platform
this means that the CSR Clock Range selection cannot be
changed at run-time and it is fixed (as reported in the driver
documentation). Viceversa the driver will try to set the MDC
clock dynamically according to the actual clock input.
Signed-off-by: Deepak Sikri <deepak.sikri@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: Francesco Virlinzi <francesco.virlinzi@st.com>
Reviewed-by: David Laight <david.laight@aculab.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt
index eacb6402..ab1e8d7 100644
--- a/Documentation/networking/stmmac.txt
+++ b/Documentation/networking/stmmac.txt
@@ -137,7 +137,7 @@
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 clk_csr: CSR Clock range selection.
+ 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.
o tx_coe: core is able to perform the tx csum in HW.