-------- 原始信息 -------- 主题: Re: [PATCH v4 1/2] dt-bindings: net: motorcomm: Add pad driver strength cfg From: Rob Herring <robh@xxxxxxxxxx> 收件人: Samin Guo <samin.guo@xxxxxxxxxxxxxxxx> 日期: 2023/7/15 > On Fri, Jul 14, 2023 at 06:14:05PM +0800, Samin Guo wrote: >> 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. >> >> When we configure the drive strength, we need to read the current LDO >> voltage value to ensure that it is a legal value at that LDO voltage. >> >> Reviewed-by: Hal Feng <hal.feng@xxxxxxxxxxxxxxxx> >> Signed-off-by: Samin Guo <samin.guo@xxxxxxxxxxxxxxxx> >> --- >> .../bindings/net/motorcomm,yt8xxx.yaml | 46 +++++++++++++++++++ >> 1 file changed, 46 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml >> index 157e3bbcaf6f..097bf143af35 100644 >> --- a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml >> +++ b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml >> @@ -52,6 +52,52 @@ properties: >> for a timer. >> type: boolean >> >> + motorcomm,rx-clk-driver-strength: >> + $ref: /schemas/types.yaml#/definitions/uint32 > > As the units are uA, drop the type and add '-microamp' suffix. > 'motorcomm,rx-clk-drv-microamp' is probably sufficient. > Thanks for the guidance, will be improved in the next version. >> + description: | >> + drive strength of rx_clk rgmii pad. >> + |----------------------------------| >> + | rx_clk ds map table | >> + |----------------------------------| >> + | DS(3b) | wol@1.8v | wol@3.3v | >> + |________|_________________________| >> + | | current(uA)| current(uA)| >> + | 000 | 1200 | 3070 | >> + | 001 | 2100 | 4080 | >> + | 010 | 2700 | 4370 | >> + | 011 | 2910 | 4680 | >> + | 100 | 3110 | 5020 | >> + | 101 | 3600 | 5450 | >> + | 110 | 3970 | 5740 | >> + | 111 | 4350 | 6140 | >> + |--------|------------|------------| >> + enum: [ 1200, 2100, 2700, 2910, 3070, 3110, 3600, 3970, >> + 4080, 4350, 4370, 4680, 5020, 5450, 5740, 6140 ] >> + default: 2910 >> + >> + motorcomm,rx-data-driver-strength: >> + $ref: /schemas/types.yaml#/definitions/uint32 >> + description: | >> + drive strength of rx_data/rx_ctl rgmii pad. >> + |----------------------------------| >> + | rx_data ds map table | >> + |----------------------------------| >> + | DS(3b) | wol@1.8v | wol@3.3v | >> + |________|_________________________| >> + | | current(uA)| current(uA)| >> + | 000 | 1200 | 3070 | >> + | 001 | 2100 | 4080 | >> + | 010 | 2700 | 4370 | >> + | 011 | 2910 | 4680 | >> + | 100 | 3110 | 5020 | >> + | 101 | 3600 | 5450 | >> + | 110 | 3970 | 5740 | >> + | 111 | 4350 | 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 >> Best regards, Samin
