Lines Matching +full:low +full:- +full:speed
1 # Copyright (c) 2020-2023 Gerson Fernando Budke <nandojve@gmail.com>
2 # SPDX-License-Identifier: Apache-2.0
7 The Atmel Two-wire Master Interface (TWIM) interconnects components on a
8 unique two-wire bus, made up of one clock line and one data line with speeds
9 of up to 3.4 Mbit/s, based on a byte-oriented transfer format. The TWIM is
20 std-clk-slew-lim = <0>;
21 std-clk-strength-low = "0.5";
22 std-data-slew-lim = <0>;
23 std-data-strength-low = "0.5";
25 hs-clk-slew-lim = <0>;
26 hs-clk-strength-high = "0.5";
27 hs-clk-strength-low = "0.5";
28 hs-data-slew-lim = <0>;
29 hs-data-strength-low = "0.5";
32 The tuning should be performed by groups defined <mode>-<line>. The prefix
33 std-<line> configures fast/fast-plus mode speeds and hs-<line> selects the
34 high speed mode. The tune should be performed for both clock and data lines
35 on both speed modes.
38 compatible: "atmel,sam-i2c-twim"
41 - name: i2c-controller.yaml
42 - name: pinctrl-device.yaml
54 std-clk-slew-lim:
59 std-clk-strength-low to fine tune the TWCK slope.
61 - 0
62 - 1
63 - 2
64 - 3
66 std-clk-strength-low:
70 Pull-down drive strength of the TWCK output buffer in fast/fast plus
73 low level.
75 - "0.5"
76 - "1.0"
77 - "1.6"
78 - "3.1"
79 - "6.2"
80 - "9.3"
81 - "15.5"
82 - "21.8"
84 std-data-slew-lim:
89 std-data-strength-low to fine tune the TWD slope.
91 - 0
92 - 1
93 - 2
94 - 3
96 std-data-strength-low:
100 Pull-down drive strength of the TWD output buffer in fast/fast plus
103 low level.
105 - "0.5"
106 - "1.0"
107 - "1.6"
108 - "3.1"
109 - "6.2"
110 - "9.3"
111 - "15.5"
112 - "21.8"
114 hs-clk-slew-lim:
118 Slew limit of the TWCK output buffer in high speed mode. This
119 should be adjusted with both hs-clk-strength-high and
120 hs-clk-strength-low to fine tune the TWCK slope.
122 - 0
123 - 1
124 - 2
125 - 3
127 hs-clk-strength-high:
131 Pull-up drive strength of the TWCK output buffer in high speed
136 - "0.5"
137 - "1.0"
138 - "1.5"
139 - "3.0"
141 hs-clk-strength-low:
145 Pull-down drive strength of the TWCK output buffer in high speed
148 low level.
150 - "0.5"
151 - "1.0"
152 - "1.6"
153 - "3.1"
154 - "6.2"
155 - "9.3"
156 - "15.5"
157 - "21.8"
159 hs-data-slew-lim:
163 Slew limit of the TWD output buffer in high speed mode. This
164 should be adjusted with hs-data-strength-low to fine tune the TWD
167 - 0
168 - 1
169 - 2
170 - 3
172 hs-data-strength-low:
175 Pull-down drive strength of the TWD output buffer in high speed
178 low level.
180 - "0.5"
181 - "1.0"
182 - "1.6"
183 - "3.1"
184 - "6.2"
185 - "9.3"
186 - "15.5"
187 - "21.8"
189 hs-master-code:
193 3-bit code to be prefixed with 0b00001 to form a unique
194 8-bit HS-mode master code (0000 1XXX)
196 - 0 # 000
197 - 1 # 001
198 - 2 # 010
199 - 3 # 011
200 - 4 # 100
201 - 5 # 101
202 - 6 # 110
203 - 7 # 111