1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
Actions Semi S900 Pin Controller
This binding describes the pin controller found in the S900 SoC.
Required Properties:
- compatible: Should be "actions,s900-pinctrl"
- reg: Should contain the register base address and size of
the pin controller.
- clocks: phandle of the clock feeding the pin controller
- gpio-controller: Marks the device node as a GPIO controller.
- gpio-ranges: Specifies the mapping between gpio controller and
pin-controller pins.
- #gpio-cells: Should be two. The first cell is the gpio pin number
and the second cell is used for optional parameters.
- interrupt-controller: Marks the device node as an interrupt controller.
- #interrupt-cells: Specifies the number of cells needed to encode an
interrupt. Shall be set to 2. The first cell
defines the interrupt number, the second encodes
the trigger flags described in
bindings/interrupt-controller/interrupts.txt
- interrupts: The interrupt outputs from the controller. There is one GPIO
interrupt per GPIO bank. The number of interrupts listed depends
on the number of GPIO banks on the SoC. The interrupts must be
ordered by bank, starting with bank 0.
Please refer to pinctrl-bindings.txt in this directory for details of the
common pinctrl bindings used by client devices, including the meaning of the
phrase "pin configuration node".
The pin configuration nodes act as a container for an arbitrary number of
subnodes. Each of these subnodes represents some desired configuration for a
pin, a group, or a list of pins or groups. This configuration can include the
mux function to select on those group(s), and various pin configuration
parameters, such as pull-up, drive strength, etc.
PIN CONFIGURATION NODES:
The name of each subnode is not important; all subnodes should be enumerated
and processed purely based on their content.
Each subnode only affects those parameters that are explicitly listed. In
other words, a subnode that lists a mux function but no pin configuration
parameters implies no information about any pin configuration parameters.
Similarly, a pin subnode that describes a pullup parameter implies no
information about e.g. the mux function.
Pinmux functions are available only for the pin groups while pinconf
parameters are available for both pin groups and individual pins.
The following generic properties as defined in pinctrl-bindings.txt are valid
to specify in a pin configuration subnode:
Required Properties:
- pins: An array of strings, each string containing the name of a pin.
These pins are used for selecting the pull control and schmitt
trigger parameters. The following are the list of pins
available:
eth_txd0, eth_txd1, eth_txen, eth_rxer, eth_crs_dv,
eth_rxd1, eth_rxd0, eth_ref_clk, eth_mdc, eth_mdio,
sirq0, sirq1, sirq2, i2s_d0, i2s_bclk0, i2s_lrclk0,
i2s_mclk0, i2s_d1, i2s_bclk1, i2s_lrclk1, i2s_mclk1,
pcm1_in, pcm1_clk, pcm1_sync, pcm1_out, eram_a5,
eram_a6, eram_a7, eram_a8, eram_a9, eram_a10, eram_a11,
lvds_oep, lvds_oen, lvds_odp, lvds_odn, lvds_ocp,
lvds_ocn, lvds_obp, lvds_obn, lvds_oap, lvds_oan,
lvds_eep, lvds_een, lvds_edp, lvds_edn, lvds_ecp,
lvds_ecn, lvds_ebp, lvds_ebn, lvds_eap, lvds_ean,
sd0_d0, sd0_d1, sd0_d2, sd0_d3, sd1_d0, sd1_d1,
sd1_d2, sd1_d3, sd0_cmd, sd0_clk, sd1_cmd, sd1_clk,
spi0_sclk, spi0_ss, spi0_miso, spi0_mosi, uart0_rx,
uart0_tx, uart2_rx, uart2_tx, uart2_rtsb, uart2_ctsb,
uart3_rx, uart3_tx, uart3_rtsb, uart3_ctsb, uart4_rx,
uart4_tx, i2c0_sclk, i2c0_sdata, i2c1_sclk, i2c1_sdata,
i2c2_sclk, i2c2_sdata, csi0_dn0, csi0_dp0, csi0_dn1,
csi0_dp1, csi0_cn, csi0_cp, csi0_dn2, csi0_dp2, csi0_dn3,
csi0_dp3, dsi_dp3, dsi_dn3, dsi_dp1, dsi_dn1, dsi_cp,
dsi_cn, dsi_dp0, dsi_dn0, dsi_dp2, dsi_dn2, sensor0_pclk,
csi1_dn0,csi1_dp0,csi1_dn1, csi1_dp1, csi1_cn, csi1_cp,
sensor0_ckout, nand0_d0, nand0_d1, nand0_d2, nand0_d3,
nand0_d4, nand0_d5, nand0_d6, nand0_d7, nand0_dqs,
nand0_dqsn, nand0_ale, nand0_cle, nand0_ceb0, nand0_ceb1,
nand0_ceb2, nand0_ceb3, nand1_d0, nand1_d1, nand1_d2,
nand1_d3, nand1_d4, nand1_d5, nand1_d6, nand1_d7, nand1_dqs,
nand1_dqsn, nand1_ale, nand1_cle, nand1_ceb0, nand1_ceb1,
nand1_ceb2, nand1_ceb3, sgpio0, sgpio1, sgpio2, sgpio3
- groups: An array of strings, each string containing the name of a pin
group. These pin groups are used for selecting the pinmux
functions.
lvds_oxx_uart4_mfp, rmii_mdc_mfp, rmii_mdio_mfp, sirq0_mfp,
sirq1_mfp, rmii_txd0_mfp, rmii_txd1_mfp, rmii_txen_mfp,
rmii_rxer_mfp, rmii_crs_dv_mfp, rmii_rxd1_mfp, rmii_rxd0_mfp,
rmii_ref_clk_mfp, i2s_d0_mfp, i2s_d1_mfp, i2s_lr_m_clk0_mfp,
i2s_bclk0_mfp, i2s_bclk1_mclk1_mfp, pcm1_in_out_mfp,
pcm1_clk_mfp, pcm1_sync_mfp, eram_a5_mfp, eram_a6_mfp,
eram_a7_mfp, eram_a8_mfp, eram_a9_mfp, eram_a10_mfp,
eram_a11_mfp, lvds_oep_odn_mfp, lvds_ocp_obn_mfp,
lvds_oap_oan_mfp, lvds_e_mfp, spi0_sclk_mosi_mfp, spi0_ss_mfp,
spi0_miso_mfp, uart2_rtsb_mfp, uart2_ctsb_mfp, uart3_rtsb_mfp,
uart3_ctsb_mfp, sd0_d0_mfp, sd0_d1_mfp, sd0_d2_d3_mfp,
sd1_d0_d3_mfp, sd0_cmd_mfp, sd0_clk_mfp, sd1_cmd_clk_mfp,
uart0_rx_mfp, nand0_d0_ceb3_mfp, uart0_tx_mfp, i2c0_mfp,
csi0_cn_cp_mfp, csi0_dn0_dp3_mfp, csi1_dn0_cp_mfp,
dsi_dp3_dn1_mfp, dsi_cp_dn0_mfp, dsi_dp2_dn2_mfp,
nand1_d0_ceb1_mfp, nand1_ceb3_mfp, nand1_ceb0_mfp,
csi1_dn0_dp0_mfp, uart4_rx_tx_mfp
These pin groups are used for selecting the drive strength
parameters.
sgpio3_drv, sgpio2_drv, sgpio1_drv, sgpio0_drv,
rmii_tx_d0_d1_drv, rmii_txen_rxer_drv, rmii_crs_dv_drv,
rmii_rx_d1_d0_drv, rmii_ref_clk_drv, rmii_mdc_mdio_drv,
sirq_0_1_drv, sirq2_drv, i2s_d0_d1_drv, i2s_lr_m_clk0_drv,
i2s_blk1_mclk1_drv, pcm1_in_out_drv, lvds_oap_oan_drv,
lvds_oep_odn_drv, lvds_ocp_obn_drv, lvds_e_drv, sd0_d3_d0_drv,
sd1_d3_d0_drv, sd0_sd1_cmd_clk_drv, spi0_sclk_mosi_drv,
spi0_ss_miso_drv, uart0_rx_tx_drv, uart4_rx_tx_drv, uart2_drv,
uart3_drv, i2c0_drv, i2c1_drv, i2c2_drv, sensor0_drv
These pin groups are used for selecting the slew rate
parameters.
sgpio3_sr, sgpio2_sr, sgpio1_sr, sgpio0_sr, rmii_tx_d0_d1_sr,
rmii_txen_rxer_sr, rmii_crs_dv_sr, rmii_rx_d1_d0_sr,
rmii_ref_clk_sr, rmii_mdc_mdio_sr, sirq_0_1_sr, sirq2_sr,
i2s_do_d1_sr, i2s_lr_m_clk0_sr, i2s_bclk0_mclk1_sr,
pcm1_in_out_sr, sd1_d3_d0_sr, sd0_sd1_clk_cmd_sr,
spi0_sclk_mosi_sr, spi0_ss_miso_sr, uart0_rx_tx_sr,
uart4_rx_tx_sr, uart2_sr, uart3_sr, i2c0_sr, i2c1_sr, i2c2_sr,
sensor0_sr
- function: An array of strings, each string containing the name of the
pinmux functions. These functions can only be selected by
the corresponding pin groups. The following are the list of
pinmux functions available:
eram, eth_rmii, eth_smii, spi0, spi1, spi2, spi3, sens0,
uart0, uart1, uart2, uart3, uart4, uart5, uart6, i2s0, i2s1,
pcm0, pcm1, jtag, pwm0, pwm1, pwm2, pwm3, pwm4, pwm5, sd0,
sd1, sd2, sd3, i2c0, i2c1, i2c2, i2c3, i2c4, i2c5, lvds,
usb30, usb20, gpu, mipi_csi0, mipi_csi1, mipi_dsi, nand0,
nand1, spdif, sirq0, sirq1, sirq2
Optional Properties:
- bias-bus-hold: No arguments. The specified pins should retain the previous
state value.
- bias-high-impedance: No arguments. The specified pins should be configured
as high impedance.
- bias-pull-down: No arguments. The specified pins should be configured as
pull down.
- bias-pull-up: No arguments. The specified pins should be configured as
pull up.
- input-schmitt-enable: No arguments: Enable schmitt trigger for the specified
pins
- input-schmitt-disable: No arguments: Disable schmitt trigger for the specified
pins
- slew-rate: Integer. Sets slew rate for the specified pins.
Valid values are:
<0> - Slow
<1> - Fast
- drive-strength: Integer. Selects the drive strength for the specified
pins in mA.
Valid values are:
<2>
<4>
<8>
<12>
Example:
pinctrl: pinctrl@e01b0000 {
compatible = "actions,s900-pinctrl";
reg = <0x0 0xe01b0000 0x0 0x1000>;
clocks = <&cmu CLK_GPIO>;
gpio-controller;
gpio-ranges = <&pinctrl 0 0 146>;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
uart2-default: uart2-default {
pinmux {
groups = "lvds_oep_odn_mfp";
function = "uart2";
};
pinconf {
groups = "lvds_oep_odn_drv";
drive-strength = <12>;
};
};
};
|
