Thread (40 messages) flat view 40 messages, 2 authors, 2020-12-16

Re: [PATCH 06/25] dt-bindings: net: dwmac: Add Tx/Rx clock sources

From: Serge Semin <hidden>
Date: 2020-12-16 06:03:01
Also in: linux-arm-kernel, linux-devicetree, lkml

On Tue, Dec 15, 2020 at 11:32:04AM -0600, Rob Herring wrote:
On Mon, Dec 14, 2020 at 12:15:56PM +0300, Serge Semin wrote:
quoted
Generic DW *MAC can be connected to an external Tramit and Receive clock
s/Tramit/Transmit/
Thanks. I'll fix it in v2.

-Sergey
quoted
generators. Add the corresponding clocks description and clock-names to
the generic bindings schema so new DW *MAC-based bindings wouldn't declare
its own names of the same clocks.

Signed-off-by: Serge Semin <redacted>
---
 .../devicetree/bindings/net/snps,dwmac.yaml        | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index e1ebe5c8b1da..74820f491346 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -126,6 +126,18 @@ properties:
           MCI, CSR and SMA interfaces run on this clock. If it's omitted,
           the CSR interfaces are considered as synchronous to the system
           clock domain.
+      - description:
+          GMAC Tx clock or so called Transmit clock. The clock is supplied
+          by an external with respect to the DW MAC clock generator.
+          The clock source and its frequency depends on the DW MAC xMII mode.
+          In case if it's supplied by PHY/SerDes this property can be
+          omitted.
+      - description:
+          GMAC Rx clock or so called Receive clock. The clock is supplied
+          by an external with respect to the DW MAC clock generator.
+          The clock source and its frequency depends on the DW MAC xMII mode.
+          In case if it's supplied by PHY/SerDes or it's synchronous to
+          the Tx clock this property can be omitted.
       - description:
           PTP reference clock. This clock is used for programming the
           Timestamp Addend Register. If not passed then the system
@@ -139,6 +151,8 @@ properties:
       enum:
         - stmmaceth
         - pclk
+        - tx
+        - rx
         - ptp_ref
 
   resets:
-- 
2.29.2
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