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Date: Wed, 9 Nov 2022 21:32:15 -0600
From: Bjorn Andersson <andersson@...nel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Andy Gross <agross@...nel.org>,
Konrad Dybcio <konrad.dybcio@...ainline.org>,
Linus Walleij <linus.walleij@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] dt-bindings: pinctrl: qcom,msm8960: convert to
dtschema
On Wed, Nov 09, 2022 at 11:51:38AM +0100, Krzysztof Kozlowski wrote:
> Convert Qualcomm MSM8960 pin controller bindings to DT schema. Keep the
> parsing of pin configuration subnodes consistent with other Qualcomm
> schemas (children named with '-state' suffix, their children with
> '-pins').
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Reviewed-by: Bjorn Andersson <andersson@...nel.org>
Regards,
Bjorn
>
> ---
>
> Changes since v1:
> 1. Correct gpio pattern.
> ---
> .../bindings/pinctrl/qcom,msm8960-pinctrl.txt | 190 ------------------
> .../pinctrl/qcom,msm8960-pinctrl.yaml | 164 +++++++++++++++
> 2 files changed, 164 insertions(+), 190 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.txt
> create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.yaml
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.txt
> deleted file mode 100644
> index a7dd213c77c6..000000000000
> --- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.txt
> +++ /dev/null
> @@ -1,190 +0,0 @@
> -Qualcomm MSM8960 TLMM block
> -
> -This binding describes the Top Level Mode Multiplexer block found in the
> -MSM8960 platform.
> -
> -- compatible:
> - Usage: required
> - Value type: <string>
> - Definition: must be "qcom,msm8960-pinctrl"
> -
> -- reg:
> - Usage: required
> - Value type: <prop-encoded-array>
> - Definition: the base address and size of the TLMM register space.
> -
> -- 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
> - Definition: see ../gpio/gpio.txt
> -
> -- gpio-reserved-ranges:
> - Usage: optional
> - 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-gpio151,
> - sdc1_clk,
> - sdc1_cmd,
> - sdc1_data
> - sdc3_clk,
> - sdc3_cmd,
> - sdc3_data
> -
> -- 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:
> - audio_pcm, bt, cam_mclk0, cam_mclk1, cam_mclk2,
> - codec_mic_i2s, codec_spkr_i2s, ext_gps, fm, gps_blanking,
> - gps_pps_in, gps_pps_out, gp_clk_0a, gp_clk_0b, gp_clk_1a,
> - gp_clk_1b, gp_clk_2a, gp_clk_2b, gp_mn, gp_pdm_0a,
> - gp_pdm_0b, gp_pdm_1a, gp_pdm_1b, gp_pdm_2a, gp_pdm_2b, gpio,
> - gsbi1, gsbi1_spi_cs1_n, gsbi1_spi_cs2a_n, gsbi1_spi_cs2b_n,
> - gsbi1_spi_cs3_n, gsbi2, gsbi2_spi_cs1_n, gsbi2_spi_cs2_n,
> - gsbi2_spi_cs3_n, gsbi3, gsbi4, gsbi4_3d_cam_i2c_l,
> - gsbi4_3d_cam_i2c_r, gsbi5, gsbi5_3d_cam_i2c_l,
> - gsbi5_3d_cam_i2c_r, gsbi6, gsbi7, gsbi8, gsbi9, gsbi10,
> - gsbi11, gsbi11_spi_cs1a_n, gsbi11_spi_cs1b_n,
> - gsbi11_spi_cs2a_n, gsbi11_spi_cs2b_n, gsbi11_spi_cs3_n,
> - gsbi12, hdmi_cec, hdmi_ddc_clock, hdmi_ddc_data,
> - hdmi_hot_plug_detect, hsic, mdp_vsync, mi2s, mic_i2s,
> - pmb_clk, pmb_ext_ctrl, ps_hold, rpm_wdog, sdc2, sdc4, sdc5,
> - slimbus1, slimbus2, spkr_i2s, ssbi1, ssbi2, ssbi_ext_gps,
> - ssbi_pmic2, ssbi_qpa1, ssbi_ts, tsif1, tsif2, ts_eoc,
> - usb_fs1, usb_fs1_oe, usb_fs1_oe_n, usb_fs2, usb_fs2_oe,
> - usb_fs2_oe_n, vfe_camif_timer1_a, vfe_camif_timer1_b,
> - vfe_camif_timer2, vfe_camif_timer3_a, vfe_camif_timer3_b,
> - vfe_camif_timer4_a, vfe_camif_timer4_b, vfe_camif_timer4_c,
> - vfe_camif_timer5_a, vfe_camif_timer5_b, vfe_camif_timer6_a,
> - vfe_camif_timer6_b, vfe_camif_timer6_c, vfe_camif_timer7_a,
> - vfe_camif_timer7_b, vfe_camif_timer7_c, wlan
> -
> -- 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:
> -
> - msmgpio: pinctrl@...000 {
> - compatible = "qcom,msm8960-pinctrl";
> - reg = <0x800000 0x4000>;
> -
> - gpio-controller;
> - #gpio-cells = <2>;
> - gpio-ranges = <&msmgpio 0 0 152>;
> - interrupt-controller;
> - #interrupt-cells = <2>;
> - interrupts = <0 16 0x4>;
> -
> - gsbi8_uart: gsbi8-uart {
> - mux {
> - pins = "gpio34", "gpio35";
> - function = "gsbi8";
> - };
> -
> - tx {
> - pins = "gpio34";
> - drive-strength = <4>;
> - bias-disable;
> - };
> -
> - rx {
> - pins = "gpio35";
> - drive-strength = <2>;
> - bias-pull-up;
> - };
> - };
> - };
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.yaml
> new file mode 100644
> index 000000000000..9dc1b0b02b9b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8960-pinctrl.yaml
> @@ -0,0 +1,164 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/qcom,msm8960-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm MSM8960 TLMM pin controller
> +
> +maintainers:
> + - Bjorn Andersson <andersson@...nel.org>
> + - Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> +
> +description:
> + Top Level Mode Multiplexer pin controller in Qualcomm MSM8960 SoC.
> +
> +properties:
> + compatible:
> + const: qcom,msm8960-pinctrl
> +
> + reg:
> + maxItems: 1
> +
> + interrupts: true
> + interrupt-controller: true
> + "#interrupt-cells": true
> + gpio-controller: true
> + "#gpio-cells": true
> + gpio-ranges: true
> + wakeup-parent: true
> +
> + gpio-reserved-ranges:
> + minItems: 1
> + maxItems: 76
> +
> + gpio-line-names:
> + maxItems: 152
> +
> +patternProperties:
> + "-state$":
> + oneOf:
> + - $ref: "#/$defs/qcom-msm8960-tlmm-state"
> + - patternProperties:
> + "-pins$":
> + $ref: "#/$defs/qcom-msm8960-tlmm-state"
> + additionalProperties: false
> +
> +$defs:
> + qcom-msm8960-tlmm-state:
> + type: object
> + description:
> + Pinctrl node's client devices use subnodes for desired pin configuration.
> + Client device subnodes use below standard properties.
> + $ref: qcom,tlmm-common.yaml#/$defs/qcom-tlmm-state
> +
> + properties:
> + pins:
> + description:
> + List of gpio pins affected by the properties specified in this
> + subnode.
> + items:
> + oneOf:
> + - pattern: "^gpio([0-9]|[1-9][0-9]|1[0-4][0-9]|15[0-1])$"
> + - enum: [ sdc1_clk, sdc1_cmd, sdc1_data, sdc3_clk, sdc3_cmd,
> + sdc3_data ]
> + minItems: 1
> + maxItems: 36
> +
> + function:
> + description:
> + Specify the alternative function to be configured for the specified
> + pins.
> +
> + enum: [ gpio, audio_pcm, bt, cam_mclk0, cam_mclk1, cam_mclk2,
> + codec_mic_i2s, codec_spkr_i2s, ext_gps, fm, gps_blanking,
> + gps_pps_in, gps_pps_out, gp_clk_0a, gp_clk_0b, gp_clk_1a,
> + gp_clk_1b, gp_clk_2a, gp_clk_2b, gp_mn, gp_pdm_0a, gp_pdm_0b,
> + gp_pdm_1a, gp_pdm_1b, gp_pdm_2a, gp_pdm_2b, gsbi1,
> + gsbi1_spi_cs1_n, gsbi1_spi_cs2a_n, gsbi1_spi_cs2b_n,
> + gsbi1_spi_cs3_n, gsbi2, gsbi2_spi_cs1_n, gsbi2_spi_cs2_n,
> + gsbi2_spi_cs3_n, gsbi3, gsbi4, gsbi4_3d_cam_i2c_l,
> + gsbi4_3d_cam_i2c_r, gsbi5, gsbi5_3d_cam_i2c_l,
> + gsbi5_3d_cam_i2c_r, gsbi6, gsbi7, gsbi8, gsbi9, gsbi10, gsbi11,
> + gsbi11_spi_cs1a_n, gsbi11_spi_cs1b_n, gsbi11_spi_cs2a_n,
> + gsbi11_spi_cs2b_n, gsbi11_spi_cs3_n, gsbi12, hdmi_cec,
> + hdmi_ddc_clock, hdmi_ddc_data, hdmi_hot_plug_detect, hsic,
> + mdp_vsync, mi2s, mic_i2s, pmb_clk, pmb_ext_ctrl, ps_hold,
> + rpm_wdog, sdc2, sdc4, sdc5, slimbus1, slimbus2, spkr_i2s,
> + ssbi1, ssbi2, ssbi_ext_gps, ssbi_pmic2, ssbi_qpa1, ssbi_ts,
> + tsif1, tsif2, ts_eoc, usb_fs1, usb_fs1_oe, usb_fs1_oe_n,
> + usb_fs2, usb_fs2_oe, usb_fs2_oe_n, vfe_camif_timer1_a,
> + vfe_camif_timer1_b, vfe_camif_timer2, vfe_camif_timer3_a,
> + vfe_camif_timer3_b, vfe_camif_timer4_a, vfe_camif_timer4_b,
> + vfe_camif_timer4_c, vfe_camif_timer5_a, vfe_camif_timer5_b,
> + vfe_camif_timer6_a, vfe_camif_timer6_b, vfe_camif_timer6_c,
> + vfe_camif_timer7_a, vfe_camif_timer7_b, vfe_camif_timer7_c,
> + wlan ]
> +
> + bias-pull-down: true
> + bias-pull-up: true
> + bias-disable: true
> + drive-strength: true
> + input-enable: true
> + output-high: true
> + output-low: true
> +
> + required:
> + - pins
> +
> + additionalProperties: false
> +
> +allOf:
> + - $ref: /schemas/pinctrl/qcom,tlmm-common.yaml#
> +
> +required:
> + - compatible
> + - reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + msmgpio: pinctrl@...000 {
> + compatible = "qcom,msm8960-pinctrl";
> + reg = <0x800000 0x4000>;
> + gpio-controller;
> + gpio-ranges = <&msmgpio 0 0 152>;
> + #gpio-cells = <2>;
> + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> +
> + spi1-default-state {
> + mosi-pins {
> + pins = "gpio6";
> + function = "gsbi1";
> + drive-strength = <12>;
> + bias-disable;
> + };
> +
> + miso-pins {
> + pins = "gpio7";
> + function = "gsbi1";
> + drive-strength = <12>;
> + bias-disable;
> + };
> +
> + cs-pins {
> + pins = "gpio8";
> + function = "gpio";
> + drive-strength = <12>;
> + bias-disable;
> + output-low;
> + };
> +
> + clk-pins {
> + pins = "gpio9";
> + function = "gsbi1";
> + drive-strength = <12>;
> + bias-disable;
> + };
> + };
> + };
> --
> 2.34.1
>
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