Re: [PATCH 1/2] dt-bindings: pinctrl: qcom: Add SC7180 pinctrl binding

[Bjorn Andersson <bjorn.andersson@linaro.org>]

On Thu 01 Aug 03:07 PDT 2019, Rajendra Nayak wrote:

> From: Jitendra Sharma <shajit@codeaurora.org>
> 
> Add the binding for the TLMM pinctrl block found in the SC7180 platform
> 
> Signed-off-by: Jitendra Sharma <shajit@codeaurora.org>
> Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
> [rnayak: Fix some copy-paste issues, sort and fix functions]
> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

> ---
>  .../bindings/pinctrl/qcom,sc7180-pinctrl.txt  | 186 ++++++++++++++++++
>  1 file changed, 186 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,sc7180-pinctrl.txt
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,sc7180-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,sc7180-pinctrl.txt
> new file mode 100644
> index 000000000000..948cd56cfab7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,sc7180-pinctrl.txt
> @@ -0,0 +1,186 @@
> +Qualcomm Technologies, Inc. SC7180 TLMM block
> +
> +This binding describes the Top Level Mode Multiplexer block found in the
> +SC7180 platform.
> +
> +- compatible:
> +	Usage: required
> +	Value type: <string>
> +	Definition: must be "qcom,sc7180-pinctrl"
> +
> +- reg:
> +	Usage: required
> +	Value type: <prop-encoded-array>
> +	Definition: the base address and size of the north, south and west
> +		    TLMM tiles
> +
> +- reg-names:
> +	Usage: required
> +	Value type: <prop-encoded-array>
> +	Defintiion: names for the cells of reg, must contain "north", "south"
> +		    and "west".
> +
> +- interrupts:
> +	Usage: required
> +	Value type: <prop-encoded-array>
> +	Definition: should specify the TLMM summary IRQ.
> +
> +- interrupt-controller:
> +	Usage: required
> +	Value type: <none>
> +	Definition: identifies this node as an interrupt controller
> +
> +- #interrupt-cells:
> +	Usage: required
> +	Value type: <u32>
> +	Definition: must be 2. Specifying the pin number and flags, as defined
> +		    in <dt-bindings/interrupt-controller/irq.h>
> +
> +- gpio-controller:
> +	Usage: required
> +	Value type: <none>
> +	Definition: identifies this node as a gpio controller
> +
> +- #gpio-cells:
> +	Usage: required
> +	Value type: <u32>
> +	Definition: must be 2. Specifying the pin number and flags, as defined
> +		    in <dt-bindings/gpio/gpio.h>
> +
> +- gpio-ranges:
> +	Usage: required
> +	Value type: <prop-encoded-array>
> +	Definition:  see ../gpio/gpio.txt
> +
> +- gpio-reserved-ranges:
> +	Usage: optional
> +	Value type: <prop-encoded-array>
> +	Definition: see ../gpio/gpio.txt
> +
> +Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
> +a general description of GPIO and interrupt bindings.
> +
> +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 pin(s)/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.
> +
> +
> +The following generic properties as defined in pinctrl-bindings.txt are valid
> +to specify in a pin configuration subnode:
> +
> +- pins:
> +	Usage: required
> +	Value type: <string-array>
> +	Definition: List of gpio pins affected by the properties specified in
> +		    this subnode.
> +
> +		    Valid pins are:
> +		      gpio0-gpio118
> +		        Supports mux, bias and drive-strength
> +
> +		      sdc1_clk, sdc1_cmd, sdc1_data sdc2_clk, sdc2_cmd,
> +		      sdc2_data sdc1_rclk
> +		        Supports bias and drive-strength
> +
> +		      ufs_reset
> +			Supports bias and drive-strength
> +
> +- function:
> +	Usage: required
> +	Value type: <string>
> +	Definition: Specify the alternative function to be configured for the
> +		    specified pins. Functions are only valid for gpio pins.
> +		    Valid values are:
> +
> +		    adsp_ext, agera_pll, aoss_cti, atest_char, atest_char0,
> +		    atest_char1, atest_char2, atest_char3, atest_tsens,
> +		    atest_tsens2, atest_usb1, atest_usb10, atest_usb11,
> +		    atest_usb12, atest_usb13, atest_usb2, atest_usb20,
> +		    atest_usb21, atest_usb22, atest_usb23, audio_ref,
> +		    btfm_slimbus, cam_mclk, cci_async, cci_i2c, cci_timer0,
> +		    cci_timer1, cci_timer2, cci_timer3, cci_timer4,
> +		    cri_trng, dbg_out, ddr_bist, ddr_pxi0, ddr_pxi1,
> +		    ddr_pxi2, ddr_pxi3, dp_hot, edp_lcd, gcc_gp1, gcc_gp2,
> +		    gcc_gp3, gpio, gp_pdm0, gp_pdm1, gp_pdm2, gps_tx,
> +		    jitter_bist, ldo_en, ldo_update, lpass_ext, mdp_vsync,
> +		    mdp_vsync0, mdp_vsync1, mdp_vsync2, mdp_vsync3, mi2s_0,
> +		    mi2s_1, mi2s_2, mss_lte, m_voc, pa_indicator, phase_flag,
> +		    PLL_BIST, pll_bypassnl, pll_reset, prng_rosc, qdss,
> +		    qdss_cti, qlink_enable, qlink_request, qspi_clk, qspi_cs,
> +		    qspi_data, qup00, qup01, qup02, qup03, qup04, qup05,
> +		    qup10, qup11, qup12, qup13, qup14, qup15, sdc1_tb,
> +		    sdc2_tb, sd_write, sp_cmu, tgu_ch0, tgu_ch1, tgu_ch2,
> +		    tgu_ch3, tsense_pwm1, tsense_pwm2, uim1, uim2, uim_batt,
> +		    usb_phy, vfr_1, _V_GPIO, _V_PPS_IN, _V_PPS_OUT,
> +		    vsense_trigger, wlan1_adc0, wlan1_adc1, wlan2_adc0,
> +		    wlan2_adc1,
> +
> +- bias-disable:
> +	Usage: optional
> +	Value type: <none>
> +	Definition: The specified pins should be configured as no pull.
> +
> +- bias-pull-down:
> +	Usage: optional
> +	Value type: <none>
> +	Definition: The specified pins should be configured as pull down.
> +
> +- bias-pull-up:
> +	Usage: optional
> +	Value type: <none>
> +	Definition: The specified pins should be configured as pull up.
> +
> +- output-high:
> +	Usage: optional
> +	Value type: <none>
> +	Definition: The specified pins are configured in output mode, driven
> +		    high.
> +		    Not valid for sdc pins.
> +
> +- output-low:
> +	Usage: optional
> +	Value type: <none>
> +	Definition: The specified pins are configured in output mode, driven
> +		    low.
> +		    Not valid for sdc pins.
> +
> +- drive-strength:
> +	Usage: optional
> +	Value type: <u32>
> +	Definition: Selects the drive strength for the specified pins, in mA.
> +		    Valid values are: 2, 4, 6, 8, 10, 12, 14 and 16
> +
> +Example:
> +
> +	tlmm: pinctrl@3000000 {
> +		compatible = "qcom,sc7180-pinctrl";
> +		reg = <0x3500000 0x300000>,
> +		      <0x3900000 0x300000>,
> +		      <0x3D00000 0x300000>;
> +		reg-names = "west", "north", "south";
> +		interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +		gpio-ranges = <&tlmm 0 0 119>;
> +		gpio-reserved-ranges = <0 4>, <106 4>;
> +		interrupt-controller;
> +		#interrupt-cells = <2>;
> +	};
> -- 
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>