diff mbox series

[net-next,v4,1/2] dt-bindings: net: dsa: microchip: Update ksz device tree bindings for drive strength

Message ID 20230912045459.1864085-2-o.rempel@pengutronix.de (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: dsa: microchip: add drive strength support | expand

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Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 9 this patch: 9
netdev/cc_maintainers warning 1 maintainers not CCed: marex@denx.de
netdev/build_clang success Errors and warnings before: 9 this patch: 9
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 9 this patch: 9
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 26 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Oleksij Rempel Sept. 12, 2023, 4:54 a.m. UTC 
Extend device tree bindings to support drive strength configuration for the
ksz* switches. Introduced properties:
- microchip,hi-drive-strength-microamp: Controls the drive strength for
  high-speed interfaces like GMII/RGMII and more.
- microchip,lo-drive-strength-microamp: Governs the drive strength for
  low-speed interfaces such as LEDs, PME_N, and others.
- microchip,io-drive-strength-microamp: Controls the drive strength for
  for undocumented Pads on KSZ88xx variants.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../bindings/net/dsa/microchip,ksz.yaml       | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

Comments

Andrew Lunn Sept. 13, 2023, 9:46 p.m. UTC | #1 
On Tue, Sep 12, 2023 at 06:54:58AM +0200, Oleksij Rempel wrote:
> Extend device tree bindings to support drive strength configuration for the
> ksz* switches. Introduced properties:
> - microchip,hi-drive-strength-microamp: Controls the drive strength for
>   high-speed interfaces like GMII/RGMII and more.
> - microchip,lo-drive-strength-microamp: Governs the drive strength for
>   low-speed interfaces such as LEDs, PME_N, and others.
> - microchip,io-drive-strength-microamp: Controls the drive strength for
>   for undocumented Pads on KSZ88xx variants.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> Reviewed-by: Rob Herring <robh@kernel.org>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
index 03b5567be3897..41014f5c01c42 100644
--- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
@@ -49,6 +49,26 @@  properties:
       Set if the output SYNCLKO clock should be disabled. Do not mix with
       microchip,synclko-125.
 
+  microchip,io-drive-strength-microamp:
+    description:
+      IO Pad Drive Strength
+    enum: [8000, 16000]
+    default: 16000
+
+  microchip,hi-drive-strength-microamp:
+    description:
+      High Speed Drive Strength. Controls drive strength of GMII / RGMII /
+      MII / RMII (except TX_CLK/REFCLKI, COL and CRS) and CLKO_25_125 lines.
+    enum: [2000, 4000, 8000, 12000, 16000, 20000, 24000, 28000]
+    default: 24000
+
+  microchip,lo-drive-strength-microamp:
+    description:
+      Low Speed Drive Strength. Controls drive strength of TX_CLK / REFCLKI,
+      COL, CRS, LEDs, PME_N, NTRP_N, SDO and SDI/SDA/MDIO lines.
+    enum: [2000, 4000, 8000, 12000, 16000, 20000, 24000, 28000]
+    default: 8000
+
   interrupts:
     maxItems: 1