Bjorn Andersson | b31d100 | 2013-12-14 23:01:54 -0800 | [diff] [blame] | 1 | Qualcomm MSM8974 TLMM block |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 2 | |
| 3 | Required properties: |
Stephen Boyd | 893a7d1 | 2014-02-26 11:12:23 -0800 | [diff] [blame] | 4 | - compatible: "qcom,msm8974-pinctrl" |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 5 | - reg: Should be the base address and length of the TLMM block. |
| 6 | - interrupts: Should be the parent IRQ of the TLMM block. |
| 7 | - interrupt-controller: Marks the device node as an interrupt controller. |
| 8 | - #interrupt-cells: Should be two. |
| 9 | - gpio-controller: Marks the device node as a GPIO controller. |
| 10 | - #gpio-cells : Should be two. |
| 11 | The first cell is the gpio pin number and the |
| 12 | second cell is used for optional parameters. |
| 13 | |
| 14 | Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for |
| 15 | a general description of GPIO and interrupt bindings. |
| 16 | |
| 17 | Please refer to pinctrl-bindings.txt in this directory for details of the |
| 18 | common pinctrl bindings used by client devices, including the meaning of the |
| 19 | phrase "pin configuration node". |
| 20 | |
Soren Brinkmann | a0e27f5 | 2014-11-06 07:38:51 -0800 | [diff] [blame^] | 21 | Qualcomm's pin configuration nodes act as a container for an arbitrary number of |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 22 | subnodes. Each of these subnodes represents some desired configuration for a |
| 23 | pin, a group, or a list of pins or groups. This configuration can include the |
| 24 | mux function to select on those pin(s)/group(s), and various pin configuration |
| 25 | parameters, such as pull-up, drive strength, etc. |
| 26 | |
| 27 | The name of each subnode is not important; all subnodes should be enumerated |
| 28 | and processed purely based on their content. |
| 29 | |
| 30 | Each subnode only affects those parameters that are explicitly listed. In |
| 31 | other words, a subnode that lists a mux function but no pin configuration |
| 32 | parameters implies no information about any pin configuration parameters. |
| 33 | Similarly, a pin subnode that describes a pullup parameter implies no |
| 34 | information about e.g. the mux function. |
| 35 | |
| 36 | |
| 37 | The following generic properties as defined in pinctrl-bindings.txt are valid |
| 38 | to specify in a pin configuration subnode: |
| 39 | pins, function, bias-disable, bias-pull-down, bias-pull,up, drive-strength. |
| 40 | |
| 41 | Non-empty subnodes must specify the 'pins' property. |
| 42 | Note that not all properties are valid for all pins. |
| 43 | |
| 44 | |
Stephen Boyd | 893a7d1 | 2014-02-26 11:12:23 -0800 | [diff] [blame] | 45 | Valid values for pins are: |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 46 | gpio0-gpio145 |
| 47 | Supports mux, bias and drive-strength |
| 48 | |
| 49 | sdc1_clk, sdc1_cmd, sdc1_data, sdc2_clk, sdc2_cmd, sdc2_data |
| 50 | Supports bias and drive-strength |
| 51 | |
Stephen Boyd | 893a7d1 | 2014-02-26 11:12:23 -0800 | [diff] [blame] | 52 | Valid values for function are: |
Andy Gross | 697787a | 2014-05-12 17:16:08 -0500 | [diff] [blame] | 53 | cci_i2c0, cci_i2c1, uim1, uim2, uim_batt_alarm, |
| 54 | blsp_uim1, blsp_uart1, blsp_i2c1, blsp_spi1, |
| 55 | blsp_uim2, blsp_uart2, blsp_i2c2, blsp_spi2, |
| 56 | blsp_uim3, blsp_uart3, blsp_i2c3, blsp_spi3, |
| 57 | blsp_uim4, blsp_uart4, blsp_i2c4, blsp_spi4, |
| 58 | blsp_uim5, blsp_uart5, blsp_i2c5, blsp_spi5, |
| 59 | blsp_uim6, blsp_uart6, blsp_i2c6, blsp_spi6, |
| 60 | blsp_uim7, blsp_uart7, blsp_i2c7, blsp_spi7, |
| 61 | blsp_uim8, blsp_uart8, blsp_i2c8, blsp_spi8, |
| 62 | blsp_uim9, blsp_uart9, blsp_i2c9, blsp_spi9, |
| 63 | blsp_uim10, blsp_uart10, blsp_i2c10, blsp_spi10, |
| 64 | blsp_uim11, blsp_uart11, blsp_i2c11, blsp_spi11, |
| 65 | blsp_uim12, blsp_uart12, blsp_i2c12, blsp_spi12, |
| 66 | blsp_spi1_cs1, blsp_spi2_cs2, blsp_spi_cs3, blsp_spi2_cs1, blsp_spi2_cs2 |
| 67 | blsp_spi2_cs3, blsp_spi10_cs1, blsp_spi10_cs2, blsp_spi10_cs3, |
| 68 | sdc3, sdc4, gcc_gp_clk1, gcc_gp_clk2, gcc_gp_clk3, cci_timer0, cci_timer1, |
| 69 | cci_timer2, cci_timer3, cci_async_in0, cci_async_in1, cci_async_in2, |
| 70 | cam_mckl0, cam_mclk1, cam_mclk2, cam_mclk3, mdp_vsync, hdmi_cec, hdmi_ddc, |
| 71 | hdmi_hpd, edp_hpd, gp_pdm0, gp_pdm1, gp_pdm2, gp_pdm3, gp0_clk, gp1_clk, |
| 72 | gp_mn, tsif1, tsif2, hsic, grfc, audio_ref_clk, qua_mi2s, pri_mi2s, spkr_mi2s, |
Bjorn Andersson | 144ef62 | 2014-07-11 18:21:24 -0700 | [diff] [blame] | 73 | ter_mi2s, sec_mi2s, bt, fm, wlan, slimbus, gpio |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 74 | |
| 75 | (Note that this is not yet the complete list of functions) |
| 76 | |
| 77 | |
| 78 | |
| 79 | Example: |
| 80 | |
| 81 | msmgpio: pinctrl@fd510000 { |
Bjorn Andersson | b31d100 | 2013-12-14 23:01:54 -0800 | [diff] [blame] | 82 | compatible = "qcom,msm8974-pinctrl"; |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 83 | reg = <0xfd510000 0x4000>; |
| 84 | |
| 85 | gpio-controller; |
| 86 | #gpio-cells = <2>; |
| 87 | interrupt-controller; |
| 88 | #interrupt-cells = <2>; |
| 89 | interrupts = <0 208 0>; |
| 90 | |
| 91 | pinctrl-names = "default"; |
| 92 | pinctrl-0 = <&uart2_default>; |
| 93 | |
| 94 | uart2_default: uart2_default { |
| 95 | mux { |
Stephen Boyd | 893a7d1 | 2014-02-26 11:12:23 -0800 | [diff] [blame] | 96 | pins = "gpio4", "gpio5"; |
| 97 | function = "blsp_uart2"; |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 98 | }; |
| 99 | |
| 100 | tx { |
Stephen Boyd | 893a7d1 | 2014-02-26 11:12:23 -0800 | [diff] [blame] | 101 | pins = "gpio4"; |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 102 | drive-strength = <4>; |
| 103 | bias-disable; |
| 104 | }; |
| 105 | |
| 106 | rx { |
Stephen Boyd | 893a7d1 | 2014-02-26 11:12:23 -0800 | [diff] [blame] | 107 | pins = "gpio5"; |
Bjorn Andersson | d46f421 | 2013-12-05 18:10:05 -0800 | [diff] [blame] | 108 | drive-strength = <2>; |
| 109 | bias-pull-up; |
| 110 | }; |
| 111 | }; |
| 112 | }; |