Thread (16 messages) 16 messages, 5 authors, 2016-04-18

[PATCH v5 2/4] Documentation: Bindings: Add STM32 DWMAC glue

From: Joachim Eastwood <hidden>
Date: 2016-03-21 15:36:46
Also in: linux-devicetree, lkml, netdev

On 21 March 2016 at 13:40, Rob Herring [off-list ref] wrote:
On Sat, Mar 19, 2016 at 12:00:22AM +0800, Chen-Yu Tsai wrote:
quoted
Hi,

On Fri, Mar 18, 2016 at 11:37 PM, Alexandre TORGUE
[off-list ref] wrote:
quoted
+- clocks: Must contain a phandle for each entry in clock-names.
+- clock-names: Should be "stmmaceth" for the host clock.
This doesn't sound like the clock input signal name...
quoted
quoted
+              Should be "tx-clk" for the MAC TX clock.
+              Should be "rx-clk" for the MAC RX clock.
How can other DWMAC blocks not have these clocks? The glue can't really
add these clocks. It could combine them into one or a new version of
DWMAC could have a different number of clock inputs. So if there is
variation here, then some of the bindings are probably wrong. I guess
the only change I'm suggesting is possibly moving these into common
binding doc.
The LPC18xx implementation probably have these clocks as well but the
LPC1850 user manual only documents the main clock. Someone with access
to the IP block doc from Synopsys should be able to check which clocks
the MAC really needs.

Rockchip bindings have two clocks named "mac_clk_rx" and "mac_clk_tx".
These are probably the same as stm32 needs so maybe use these names
and move them into the main doc and update the rockchip binding.


regards,
Joachim Eastwood
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