1 ImgTec TZ1090 pin controller
4 - compatible: "img,tz1090-pinctrl"
5 - reg: Should contain the register physical address and length of the pad
6 configuration registers (CR_PADS_* and CR_IF_CTL0).
8 Please refer to pinctrl-bindings.txt in this directory for details of the
9 common pinctrl bindings used by client devices, including the meaning of the
10 phrase "pin configuration node".
12 TZ1090's pin configuration nodes act as a container for an arbitrary number of
13 subnodes. Each of these subnodes represents some desired configuration for a
14 pin, a group, or a list of pins or groups. This configuration can include the
15 mux function to select on those pin(s)/group(s), and various pin configuration
16 parameters, such as pull-up, drive strength, etc.
18 The name of each subnode is not important; all subnodes should be enumerated
19 and processed purely based on their content.
21 Each subnode only affects those parameters that are explicitly listed. In
22 other words, a subnode that lists a mux function but no pin configuration
23 parameters implies no information about any pin configuration parameters.
24 Similarly, a pin subnode that describes a pullup parameter implies no
25 information about e.g. the mux function. For this reason, even seemingly boolean
26 values are actually tristates in this binding: unspecified, off, or on.
27 Unspecified is represented as an absent property, and off/on are represented as
28 integer values 0 and 1.
30 Required subnode-properties:
31 - tz1090,pins : An array of strings. Each string contains the name of a pin or
32 group. Valid values for these names are listed below.
34 Optional subnode-properties:
35 - tz1090,function: A string containing the name of the function to mux to the
36 pin or group. Valid values for function names are listed below, including
37 which pingroups can be muxed to them.
38 - supported generic pinconfig properties (for further details see
39 Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt):
45 - input-schmitt-enable
46 - input-schmitt-disable
47 - drive-strength: Integer, control drive strength of pins in mA.
54 Note that many of these properties are only valid for certain specific pins
55 or groups. See the TZ1090 TRM for complete details regarding which groups
56 support which functionality. The Linux pinctrl driver may also be a useful
59 Valid values for pin and group names are:
63 These all support bias-high-impediance, bias-pull-up, bias-pull-down, and
64 bias-bus-hold (which can also be provided to any of the groups below to set
65 it for all pins in that group).
67 They also all support the some form of muxing. Any pins which are contained
68 in one of the mux groups (see below) can be muxed only to the functions
69 supported by the mux group. All other pins can be muxed to the "perip"
70 function which enables them with their intended peripheral.
72 Different pins in the same mux group cannot be muxed to different functions,
73 however it is possible to mux only a subset of the pins in a mux group to a
74 particular function and leave the remaining pins unmuxed. This is useful if
75 the board connects certain pins in a group to other devices to be controlled
76 by GPIO, and you don't want the usual peripheral to have any control of the
79 ant_sel0, ant_sel1, gain0, gain1, gain2, gain3, gain4, gain5, gain6, gain7,
80 i2s_bclk_out, i2s_din, i2s_dout0, i2s_dout1, i2s_dout2, i2s_lrclk_out,
81 i2s_mclk, pa_on, pdm_a, pdm_b, pdm_c, pdm_d, pll_on, rx_hp, rx_on,
82 scb0_sclk, scb0_sdat, scb1_sclk, scb1_sdat, scb2_sclk, scb2_sdat, sdh_cd,
83 sdh_clk_in, sdh_wp, sdio_clk, sdio_cmd, sdio_d0, sdio_d1, sdio_d2, sdio_d3,
84 spi0_cs0, spi0_cs1, spi0_cs2, spi0_din, spi0_dout, spi0_mclk, spi1_cs0,
85 spi1_cs1, spi1_cs2, spi1_din, spi1_dout, spi1_mclk, tft_blank_ls, tft_blue0,
86 tft_blue1, tft_blue2, tft_blue3, tft_blue4, tft_blue5, tft_blue6, tft_blue7,
87 tft_green0, tft_green1, tft_green2, tft_green3, tft_green4, tft_green5,
88 tft_green6, tft_green7, tft_hsync_nr, tft_panelclk, tft_pwrsave, tft_red0,
89 tft_red1, tft_red2, tft_red3, tft_red4, tft_red5, tft_red6, tft_red7,
90 tft_vd12acb, tft_vdden_gd, tft_vsync_ns, tx_on, uart0_cts, uart0_rts,
91 uart0_rxd, uart0_txd, uart1_rxd, uart1_txd.
93 bias-high-impediance: supported.
94 bias-pull-up: supported.
95 bias-pull-down: supported.
96 bias-bus-hold: supported.
97 function: perip or those supported by pin's mux group.
101 These other pins are part of various pin groups below, but can't be
102 controlled as GPIOs. They do however support bias-high-impediance,
103 bias-pull-up, bias-pull-down, and bias-bus-hold (which can also be provided
104 to any of the groups below to set it for all pins in that group).
106 clk_out0, clk_out1, tck, tdi, tdo, tms, trst.
108 bias-high-impediance: supported.
109 bias-pull-up: supported.
110 bias-pull-down: supported.
111 bias-bus-hold: supported.
115 These all support function, and some support drive configs.
118 pins: tx_on, rx_on, pll_on, pa_on, rx_hp, ant_sel0,
119 ant_sel1, gain0, gain1, gain2, gain3, gain4,
121 function: afe, ts_out_0.
122 input-schmitt-enable: supported.
123 input-schmitt-disable: supported.
124 drive-strength: supported.
127 function: pdm_dac, usb_vbus.
129 pins: sdh_cd, sdh_wp, sdh_clk_in.
132 pins: sdio_clk, sdio_cmd, sdio_d0, sdio_d1, sdio_d2,
137 function: spi1_cs2, usb_vbus.
139 pins: tft_red0, tft_red1, tft_red2, tft_red3,
140 tft_red4, tft_red5, tft_red6, tft_red7,
141 tft_green0, tft_green1, tft_green2, tft_green3,
142 tft_green4, tft_green5, tft_green6, tft_green7,
143 tft_blue0, tft_blue1, tft_blue2, tft_blue3,
144 tft_blue4, tft_blue5, tft_blue6, tft_blue7,
145 tft_vdden_gd, tft_panelclk, tft_blank_ls,
146 tft_vsync_ns, tft_hsync_nr, tft_vd12acb,
148 function: tft, ext_dac, not_iqadc_stb, iqdac_stb, ts_out_1,
149 lcd_trace, phy_ringosc.
150 input-schmitt-enable: supported.
151 input-schmitt-disable: supported.
152 drive-strength: supported.
156 These all support input-schmitt-enable, input-schmitt-disable,
160 pins: tck, trst, tdi, tdo, tms.
162 pins: scb1_sdat, scb1_sclk.
164 pins: scb2_sdat, scb2_sclk.
166 pins: spi0_mclk, spi0_cs0, spi0_cs1, spi0_cs2, spi0_dout, spi0_din.
168 pins: spi1_mclk, spi1_cs0, spi1_cs1, spi1_cs2, spi1_dout, spi1_din.
170 pins: uart0_txd, uart0_rxd, uart0_rts, uart0_cts,
171 uart1_txd, uart1_rxd.
173 pins: clk_out1, i2s_din, i2s_dout0, i2s_dout1, i2s_dout2,
174 i2s_lrclk_out, i2s_bclk_out, i2s_mclk.
176 pins: clk_out0, pdm_b, pdm_a.
178 pins: scb0_sclk, scb0_sdat, pdm_d, pdm_c.
180 pins: sdio_clk, sdio_cmd, sdio_d0, sdio_d1, sdio_d2, sdio_d3,
181 sdh_wp, sdh_cd, sdh_clk_in.
185 These are just convenient groupings of pins and don't support any drive
189 pins: uart0_cts, uart0_rts, uart0_rxd, uart0_txd.
191 pins: uart1_rxd, uart1_txd.
193 pins: scb0_sclk, scb0_sdat.
195 pins: i2s_bclk_out, i2s_din, i2s_dout0, i2s_dout1, i2s_dout2,
196 i2s_lrclk_out, i2s_mclk.
200 pinctrl: pinctrl@02005800 {
201 #gpio-range-cells = <3>;
202 compatible = "img,tz1090-pinctrl";
203 reg = <0x02005800 0xe4>;
206 Example board file extract:
209 uart0_default: uart0 {
211 tz1090,pins = "uart0_rxd",
213 tz1090,function = "perip";
219 tz1090,function = "tft";
225 pinctrl-names = "default";
226 pinctrl-0 = <&uart0_default>;