The motorcomm phy (YT8531) supports the ability to adjust the drive
strength of the rx_clk/rx_data.
The YT8531 RGMII LDO voltage supports 1.8V/3.3V, and the
LDO voltage can be configured with hardware pull-up resistors to match
the SOC voltage (usually 1.8V). The software can read the registers
0xA001 obtain the current LDO voltage value.
Reviewed-by: Hal Feng <hal.feng@xxxxxxxxxxxxxxxx>
Signed-off-by: Samin Guo <samin.guo@xxxxxxxxxxxxxxxx>
---
.../bindings/net/motorcomm,yt8xxx.yaml | 34 +++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
index 157e3bbcaf6f..605be74f8556 100644
--- a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
+++ b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
@@ -52,6 +52,40 @@ properties:
for a timer.
type: boolean
+ motorcomm,rx-clk-drv-microamp:
+ description: |
+ drive strength of rx_clk rgmii pad.
+ The YT8531 RGMII LDO voltage supports 1.8V/3.3V, and the LDO voltage can
+ be configured with hardware pull-up resistors to match the SOC voltage
+ (usually 1.8V).
+ The software can read the registers to obtain the LDO voltage and configure
+ the legal drive strength(curren).
+ =====================================================
+ | voltage | curren Available (uA) |
+ | 1.8v | 1200 2100 2700 2910 3110 3600 3970 4350 |
+ | 3.3v | 3070 4080 4370 4680 5020 5450 5740 6140 |
+ =====================================================
+ enum: [ 1200, 2100, 2700, 2910, 3070, 3110, 3600, 3970,
+ 4080, 4350, 4370, 4680, 5020, 5450, 5740, 6140 ]
+ default: 2910
+
+ motorcomm,rx-data-drv-microamp:
+ description: |
+ drive strength of rx_data/rx_ctl rgmii pad.
+ The YT8531 RGMII LDO voltage supports 1.8V/3.3V, and the LDO voltage can
+ be configured with hardware pull-up resistors to match the SOC voltage
+ (usually 1.8V).
+ The software can read the registers to obtain the LDO voltage and configure
+ the legal drive strength(curren).
+ =====================================================
+ | voltage | curren Available (uA) |
+ | 1.8v | 1200 2100 2700 2910 3110 3600 3970 4350 |
+ | 3.3v | 3070 4080 4370 4680 5020 5450 5740 6140 |
+ =====================================================
+ enum: [ 1200, 2100, 2700, 2910, 3070, 3110, 3600, 3970,
+ 4080, 4350, 4370, 4680, 5020, 5450, 5740, 6140 ]
+ default: 2910
+
motorcomm,tx-clk-adj-enabled:
description: |
This configuration is mainly to adapt to VF2 with JH7110 SoC.
--
2.17.1
