Lines Matching +full:skew +full:- +full:delay
4 to clock delays. You can specify clock delay values in the PHY OF
8 Note that these settings are applied after any phy-specific fixup from
14 All skew control options are specified in picoseconds. The minimum
17 skew values actually increase in 120ps steps, starting from -840ps. The
23 The following table shows the actual skew delay you will get for each of the
25 corresponding pad skew register:
27 Device Tree Value Delay Pad Skew Register Value
28 -----------------------------------------------------
29 0 -840ps 0000
30 200 -720ps 0001
31 400 -600ps 0010
32 600 -480ps 0011
33 800 -360ps 0100
34 1000 -240ps 0101
35 1200 -120ps 0110
48 - rxc-skew-ps : Skew control of RXC pad
49 - rxdv-skew-ps : Skew control of RX CTL pad
50 - txc-skew-ps : Skew control of TXC pad
51 - txen-skew-ps : Skew control of TX CTL pad
52 - rxd0-skew-ps : Skew control of RX data 0 pad
53 - rxd1-skew-ps : Skew control of RX data 1 pad
54 - rxd2-skew-ps : Skew control of RX data 2 pad
55 - rxd3-skew-ps : Skew control of RX data 3 pad
56 - txd0-skew-ps : Skew control of TX data 0 pad
57 - txd1-skew-ps : Skew control of TX data 1 pad
58 - txd2-skew-ps : Skew control of TX data 2 pad
59 - txd3-skew-ps : Skew control of TX data 3 pad
63 All skew control options are specified in picoseconds. The minimum
64 value is 0, and the maximum is property-dependent. The increment
66 rxc-skew-ps=<0> actually results in -900 picoseconds adjustment.
68 The KSZ9031 hardware supports a range of skew values from negative to
74 The following 5-bit values table apply to rxc-skew-ps and txc-skew-ps.
76 Pad Skew Value Delay (ps) Devicetree Value
77 ------------------------------------------------------
78 0_0000 -900ps 0
79 0_0001 -840ps 60
80 0_0010 -780ps 120
81 0_0011 -720ps 180
82 0_0100 -660ps 240
83 0_0101 -600ps 300
84 0_0110 -540ps 360
85 0_0111 -480ps 420
86 0_1000 -420ps 480
87 0_1001 -360ps 540
88 0_1010 -300ps 600
89 0_1011 -240ps 660
90 0_1100 -180ps 720
91 0_1101 -120ps 780
92 0_1110 -60ps 840
111 The following 4-bit values table apply to the txdX-skew-ps, rxdX-skew-ps
112 data pads, and the rxdv-skew-ps, txen-skew-ps control pads.
114 Pad Skew Value Delay (ps) Devicetree Value
115 ------------------------------------------------------
116 0000 -420ps 0
117 0001 -360ps 60
118 0010 -300ps 120
119 0011 -240ps 180
120 0100 -180ps 240
121 0101 -120ps 300
122 0110 -60ps 360
137 - rxc-skew-ps : Skew control of RX clock pad
138 - txc-skew-ps : Skew control of TX clock pad
142 - rxdv-skew-ps : Skew control of RX CTL pad
143 - txen-skew-ps : Skew control of TX CTL pad
144 - rxd0-skew-ps : Skew control of RX data 0 pad
145 - rxd1-skew-ps : Skew control of RX data 1 pad
146 - rxd2-skew-ps : Skew control of RX data 2 pad
147 - rxd3-skew-ps : Skew control of RX data 3 pad
148 - txd0-skew-ps : Skew control of TX data 0 pad
149 - txd1-skew-ps : Skew control of TX data 1 pad
150 - txd2-skew-ps : Skew control of TX data 2 pad
151 - txd3-skew-ps : Skew control of TX data 3 pad
153 - micrel,force-master:
162 All skew control options are specified in picoseconds. The increment
164 A negative value can be assigned as rxc-skew-psec = <(-100)>;.
168 Range of the value -700 to 2400, default value 0:
170 - rxc-skew-psec : Skew control of RX clock pad
171 - txc-skew-psec : Skew control of TX clock pad
173 Range of the value -700 to 800, default value 0:
175 - rxdv-skew-psec : Skew control of RX CTL pad
176 - txen-skew-psec : Skew control of TX CTL pad
177 - rxd0-skew-psec : Skew control of RX data 0 pad
178 - rxd1-skew-psec : Skew control of RX data 1 pad
179 - rxd2-skew-psec : Skew control of RX data 2 pad
180 - rxd3-skew-psec : Skew control of RX data 3 pad
181 - txd0-skew-psec : Skew control of TX data 0 pad
182 - txd1-skew-psec : Skew control of TX data 1 pad
183 - txd2-skew-psec : Skew control of TX data 2 pad
184 - txd3-skew-psec : Skew control of TX data 3 pad
190 rxc-skew-ps = <1800>;
191 rxdv-skew-ps = <0>;
192 txc-skew-ps = <1800>;
193 txen-skew-ps = <0>;
197 /* Attach to an explicitly-specified PHY */
199 phy0: ethernet-phy@0 {
200 rxc-skew-ps = <1800>;
201 rxdv-skew-ps = <0>;
202 txc-skew-ps = <1800>;
203 txen-skew-ps = <0>;
209 phy-mode = "rgmii-id";
215 http://www.micrel.com/_PDF/Ethernet/datasheets/ksz9021rl-rn_ds.pdf